e. The websites associated with hits 2-5 all calculate the microstrip impedance for this stackup to be 50. These calculators will return an impedance value for pairs of trace width, substrate thickness, and copper weight values. See full list on protoexpress. 0; 1 < ε r < 15 ) Select the units for all dimensions: mm mils. To find what a given trace width will have a single ended or differential impedance, we can use a built in calculator from Allegro. The dimensions of traces and their spacing significantly affect impedance values. This calculator computes the trace width of a stripline if the maximum current, trace thickness, temperature rise, ambient temperature and length are given. 8 substrates. 24 hours a day, 7 days a week. Microstrip Width Calculator. All transmission lines are 1 ounce thick (1. A uniform transmission line on a PCB has a definite trace width and height, and is at a uniform distance from the return path conductor - which is usually a plane at a certain distance from the. t. Geometric Parameter Definitions: The JLCPCB Impedance Calculator computes track width values and recommended stack-ups from user-input values of board layer, thickness, copper weight, target impedance, trace spacing (for edge-coupled pairs), and impedance trace to copper gap (coplanar waveguides). This tool uses formulas from IPC-2221 to calculate the width of a copper printed circuit board conductor or "trace" required to carry a given current while keeping the resulting increase in trace temperature below a specified limit. For this example, we will use 2. PCB Trace Width Calculator. Fabricators give trace impedance tables as guides to designers that need to implement controlled impedance in their PCBs. Calculate the impedance of the coax using the outer diameter dielectric width, Inner conductor diameter width, and either the dielectric constant or. Trace Impedance Calculator; Length Conversion; Wire Size Conversion Calculator; Inductance Conversion; See. While this calculator will provide a baseline, any final design considerations should be made towards loss, dispersion, copper roughness, phase shift, etc. Using the built-in Simbeor ® impedance calculator, the PCB editor's Layer Stack Manager calculates the trace width needed to deliver the specified impedance. Select a trace impedance profile over the length of the taper. Ls =. Back to Resources Use our free impedance calculator to ensure your design is error-free! Impedance Calculator Structure Type Single Ended. Copper thickness (t) = 18 micron. In PCB design software with a built-in impedance calculator. H1 (Dielectric thickness) :One beneficial criterion is to look at the track width calculated for a 50-ohm impedance. Using formulas to calculate strip/mictrostrip impedance's used to be good enough, but with modern PCB technology, this does NOT work well. 5. so i opend the KiCad PCB Calculator and tried to get some values out of this. Now I'd like to get into this topic and the first task would be to create a ~ 10cm board to board interconnect flex PCB with 90 ohm (USB) and 100 ohm (LVDS) controlled impedance traces on it. T represents trace thickness. Not all calculators will explicitly state this. A higher Dk value also leads to higher dielectric loss. Using typical values of W= 9 mil, H= 24 mil, T = 1. W=trace width. The characteristic impedance of the trace can be calculated using the below formula: Formula to calculate characteristic impedance of a PCB trace. Therefore, the trace height and width you choose for 1 GHz will be a slightly different impedance at 10 GHz (if you. , 0. Yet I got a ZDiff CPW with ground capable calculator: Differential surface coplanar waveguide. What is Microstrip Impedance? For my results, I find that the minimum inductance is 292 nH per meter when ( w/h) = 1. Return to all Calculators. 3mil seems like a substantial enough difference. What is the width of a trace for 100 ohm impedance? The width of a PCB trace for a specific impedance depends on factors like dielectric material and thickness. Trace top width: Trace base width – 1 mil: Nan Ya Plastics NP-155F (4 to 8 layers) Core Thickness: εr: Prepreg Type: Resin Content: Nominal Thickness: εr: 0. Track width (w) = 137 micron. If your boards are to be manufactured in arrays, click on the option “Yes”. When working with a power rail, high-voltage components, and other portions of your board that are sensitive to heat, you can determine the power trace width you need to use in your layout with a PCB trace width vs. Step 1 Calculate singled ended impedance for each: Use "impedance + trace space" from top drop down box: Set Z=50R, click single ened, gives a result of. One of the most common inquiries that we encounter at Bittele electronics are regarding our standard trace widths for a given board thicknesses and copper weight. The trace impedance (Z) of a PCB trace can be calculated using the formula for microstrip transmission lines: Z = (87 * Log10 [ (2 * H) / (0. Note: Units do not matter for this calculation as long as they are consistent. Use a 4-layer board so you can achieve h ~= 0. Enter the same substrate parameters and 14 mil for W. It is important to calculate the impedance of the line. Therefore, there is a rise in characteristic impedance of 3. It’s a three-in-one. If the calculated routing trace width is a value that cannot be ordered, you can tune the width and gap settings. This is done initially using calculators specifically designed for this purpose. ϵ r is the substrate dielectric. AS9100D – Military & Aerospace. Place critical components, such as microcontrollers or high-speed ICs, close to the power source to avoid trace stubs. Microstrip Transmission Line Models. Ohm’s Law provides the framework for solving network analysis problems; when the curtain gets pulled back, Ohm’s Law updates to become the relationship between voltage, current, and impedance, not resistance. Best is 5mils, but 4mils is OK, too. The IPC-2141 trace Impedance calculator will help make initial design easier by allowing the user to input basic parameters and get a. 100 ohm differential pairs that are tightly coupled have a typical single ended impedance of around 65 ohms. Engineering/Technical. Z 0, ss1 is the characteristic impedance of symmetrical stripline with b=h1 (Ɛr=1). If I connect it, I would effectively be increasing the via pad. Color-Code. I used the impedance calculator in Altium with the trace type selected as "single" which I believe is Microstrip. The IPC-2221 standard and IPC-2152 standard both include this guidance on designing for thermal reliability, and there has been some debate as to the applicability of each standard. Calculate the trace parameters for controlled impedance: Determine trace thickness, height, and length along with the dielectric constant of the material. 6%. The second part shows the impedance table which gives the details of impedances on different layers along with the trace widths and trace spacing. It would be nice to have a mm/mil switch including the board thicknesses. The Track Width tool calculates the trace width for printed circuit board conductors for a given current and temperature rise. Let's consider the impedance for copper at 1 MHz. L-Match Topology. 8mm 1. The surface finish is neglected. The designer can normally enter their desired impedance, and the calculator will determine the PCB trace width needed to meet that impedance goal. Impedance Calculator; Via Impedance Calculator; Trace Width and Current Capacity Calculator; Via Current Capacity Calculator; Signal & Plane Layer Estimator; Conductor. . These important design features are. PCB Trace Impedance Calculator. 031. W is the width of the trace. Optimize power transfer with our Impedance Matching Calculator. 92445. 2. For example, row ‘a’ above shows details of layer 1 (100. 01) and dielectric constant (3. Microstrip Trace Impedance Calculator PCB Trace Width Calculator. Color Code. The width of the conducting layer is important to calculate the radiation intensity since it directly affects the bandwidth of the signal waves. The designer can normally enter their desired impedance, and the calculator will determine the PCB trace width needed to meet that impedance goal. The characteristic impedance of your microstrips is determined by the trace width for a given layer stackup. What’s more, once you have determined the rough estimation of the initial trace width needed to calculate the impedance of your PCB design. As explained in Part 1 of this series ( Circuit Cellar 367, February 2021 [3]), PCB manufacturers can propose different PCB stack-ups, and specifying a low thickness for the so-called “top prepreg” will help to reduce the trace width. The Differential microstrip impedance calculator is used to compute the differential (Zd) and single-ended impedance (Zo) of an edge-coupled microstrip line just by entering the width, separation and thickness of the trace along with the dielectric thickness and constant of the coupled line. my board thickness is 1,5mm (base material) and 35um Cu. W is the width of the trace. 1. This free trace width calculator is based on IPC-2152. Ω. Make sure you understand the factors that influence transmission line impedance, and if needed, use a calculator to get an initial estimate of impedance before programming the required trace width as a design rule. This free trace width calculator is based on IPC-2152. INPUT DATA. H1=> 8. Includes information on how trace width is calculated. This calculator requires symmetry in the trace widths and location between plane layers. Calculates the optimum trace width for a given impedance value; Determines total insertion, dielectric, and conductor losses; 2. 393 mm, the required trace width for this particular inductance value is w = 0. These calculators will return an impedance value for pairs of trace width, substrate thickness, and copper weight values. Get latest updates and offers. Coil Inductance Calculator. Let us consider the via diameter as 10mils and temperature rise above ambient as 40°C. TransLine. Some of the primary design requirements of high-voltage boards are defined in IPC-2221B. These important design features are incorporated into your design rules, making impedance-controlled routing quick and easy. If you know the values of any of the two parameters (conductor width, max temperature, max current capacity) it determines. The calculator below uses Wadell’s. 15 mil, and the inductance would be 6. F-A t t enua t o rs. Yes, copper poor around your differential stripline will substantially affect the characteristic impedance. How to calculate PCB Impedance? First, determine the dielectric constant. Trace Width (W) ( mils ) Calculate W . Where: Z 0 is the characteristic impedance of the microstrip; ε r is the relative permittivity (dielectric constant) of the substrate material; h is the height of the microstrip above the ground plane; W is the width of the microstrip trace; By knowing the values of the dielectric constant, height, and width, you can use this formula to calculate the characteristic. Microstrip Trace: Embedded Microstrip Trace: Stripline Trace: Dual Stripline Trace: Geometric Parameter Definitions. 393 mm, the required trace width for this particular inductance value is w = 0. Note that some online microstrip impedance calculators will determine the width for a given target impedance, copper weight, and substrate thickness. 92445. Trace Impedance Calculator; Length Conversion; Wire Size Conversion Calculator; Inductance Conversion; See. For 2. F-A t t enua t o rs. Figure 2. 024, b = 0. Microstrip Trace: Embedded Microstrip Trace: Stripline Trace: Dual Stripline Trace: Geometric Parameter Definitions. Understanding coax can be helpful when working with it. 2 (double-sided) Flex thickness x 12. Sierra Circuits’ Via Impedance Calculator uses the physical dimensions of a via to calculate its capacitance, inductance, and impedance. It shows the minimum trace-to-ground spacing required to. Flex thickness x 6. However, when using EEWeb's impedance calculator, I get much different values. Figure 24. Learn More about using the Altium Designer’s impedance calculator in this brief tutorial. W W = trace width. This tool will also compute the resistance of the microstrip, the voltage drop, and the power. The Microstrip Impedance Calculator is a vital tool in the design and analysis of microwave circuits. The Layer Stack Manager in Altium Designer can be used to easily arrange signal and plane layers in a PCB stackup and determine the impedance of traces in each layer. 6 ohms. A 3D view of a complex impedance controlled PCB in Altium Designer. ViaMin. It is not always possible to adjust trace length and width, hence implementing lower copper thickness is one of the feasible ways. Just as a sanity check, we can quickly calculate the total inductance of a trace. Using online calculators, I figured out the width of the PCB trace to create an impedance of 50 Ohms is 2. Simpler calculators will use the less-accurate IPC-2141. To calculate the proper trace width for routing, PCB layout designers must add these parameters to the circuit's impedance specifications. This can be easily visualized if we vary the width (really, the ratio W/H in these equations) while keeping all other parameters constant. Note that vias are made out of plated copper which typically has a resistivity of 1. Thank you. IPC 6012 CLASS 2. The trace width required to deliver a specific impedance can be calculated as part of an impedance profile, in the Impedance tab of the Layer Stack. 3W spacing between critical traces 3. Incorporate coaxial via geometry. To use it, first select the tolerance of the resistor: 10%, 5% or equal or smaller than 2%. Equations Altium Designer includes a PCB trace impedance calculator, PCB trace width calculator under IPC 2152, and a plethora of other important design tools. Pressure Conversion. Factors Affecting Coplanar Waveguide Impedance When calculating coplanar waveguide impedance, there are many factors that affect the waveguide’s impedance, losses, and. Impedance trace widths based on Bittele's standard Stackups. 3. 25mm, a trace width of 0. A coplanar waveguide with groundplane distance H = 1. Enter the relative permitivity, width of the trace, the ground plane spacing, and the substrate thickness to calculate the characteristic impedance. Scientific Calculator. In fact, striplines often make components such as band-pass filter's more accurately, with more symmetric roll-off and no lower cutoff frequency. Coplanar Waveguide Calculator. ) such real numbers for the line impedances are sufficient. Features: Three-in-one calculator. W: trace width: T: trace thickness: H (/H1)Through PCB impedance control, the impedance offered by the trace to an alternating current signal can be predetermined. o use this calculator, enter the parameters of the regulator . Call us: +1 (800) 763-7503. Some calculators opt for Wadell's results, yet they simply state they are "based on Wheeler’s method" without providing references. 048 x dT0. Input Your Specs to Get Started. • Use precision components (1 percent or better) in the line-termination circuitry. To use this tool, enter the trace width, thickness, ambient temperature, temperature rise, and the microstrip length and click the "calculate" button. 1kOhm, 1% tolerance: Brown Black Black Brown Brown. There are four different types of impedance used in characterizing differential trace impedances. We recommend the software from. All of the transmission lines are 1 ounce (1. So, for longer. Cross-hatched copper plane in a flex stack-up for controlled impedance. It's open-source to download. The IPC-2141 trace Impedance calculator will help make initial design easier by allowing the user to input basic parameters and get a calculated impedance according to the IPC-2141 standard. 25 mm (about 10 mils) might achieve a 100-ohm characteristic impedance. High-speed PCBs operate in the range of. copper trace on a 4-layer board with 8 mil thick dielectric and Dk = 4. Menu. T is the trace thickness [oz/ft 2], W is the trace width [mils], R is the resistance [Ω], ρ is the resistivity parameter, whose value for copper is 1. Below is the calculation. The substrate parameters (ε r and h) and the frequency of interest are required. The guides says spacing under 0. The following formula is used to calculate the differential impedance of a microstrip: To calculate the differential impedance of a microstrip, divide the characteristic impedance of the microstrip by 2. R. February 28, 2022 · Infinus. Qorvo Calculators and Design Tools MatchCalc Qorvo MatchCalc is a free downloadable RF/microwave matching calculator with ideal tunable passive components. ( 0. After that, you can analyze the results. Thickness. The application below provides a simple way to calculate the required trace width (in mil) for a given input current and temperature. Sierra Circuits Impedance Calculator. CALCULATORS. What is the width of a trace for 100 ohm impedance? The width of a trace for a specific impedance depends on the dielectric constant, height above the reference plane, and other parameters. W W = trace width. TanD 0,015. Just as important as determining an appropriate trace width for a single-ended trace is determination of an appropriate spacing between two traces in a differential pair. Trace width is an important design parameter in PCB design. A differential stripline pair refers to two traces located between two reference plane layers, which are routed as a differential pair. 77 mm gave me a. At the point of bending, the trace width is 1. For example, let us input 30°C ambient temperature, 1oz via plating, and 0. 44 x A0. Using an impedance control PCB calculator, the engineer determines that 50-ohm single-ended traces require a width of 6 mils and a spacing of 10 mils. Printed Circuit Board Width Tool . The stripline impedance calculator provided below is useful for gaining an initial estimate of trace impedance for striplines. Now also calculates DC resistance with temperature compensation. ) such real numbers for the line impedances are sufficient. The IPC-2141 trace Impedance calculator will help make initial design easier by allowing the user to input basic parameters and get a calculated impedance according to the IPC-2141 standard. 35 ohms. 12cm, with 1. Use the following guidelines. Share. The IPC-2221 standard and IPC-2152 standard both include this guidance on designing for thermal reliability, and there has been some debate as to the applicability of each standard. The surface finish is neglected. The dielectric thickness, Dk, trace width, copper weight, and any special parameters are all taken into account when calculating impedance. 0mmCurrent layer:4-layer. The edge couple differential symmetric stripline transmission line is a common technique for routing differential traces. The other option is to use a calculator based on either IPC-2152 or IPC-2221 standards. This calculator finds both odd and even transmission line impedance. Z0 = (60 / √εr) * ln ( (8h) / (w + s)) Where εr is the dielectric constant of the substrate material, h is the substrate height, w is the trace width, and s is the spacing between traces. The tool implements numerical solutions of Maxwell’s equations to render accurate and consistent results. Calculates the characteristic impedance and per-unit-length parameters of typical printed circuit board trace geometries. This tool uses formulas from IPC-2221 to calculate the width of a copper printed circuit board conductor or "trace" required to carry a given current while keeping the resulting increase in trace temperature below a specified limit. This calculator assumes the distance between the two reference planes to be an equal distance. Cite. **Note: Like our stripline impedance calculator, all of our RF calculators allow SI prefix input. There are some advantages to using a. The Calculator has the following tools:. Loss of a CPW line is primarily due to dielectric, radiative, and conductor losses. Board thickness (h) = 50 micron. To calculate PCB trace resistance, The 50 ohm PCB trace calculator is designed considering the following formula. When designing differential pairs and determining their impedance, it’s important to understand how coupling will affect the pair. Copper thickness (t) = 18 micron. Microstrip Impedance Calculator: Provide values for three of the four parameters H, T, W, Z0 and the relative permittivity of the dielectric. In this demonstration, we’ll choose uncoated microstrip single-ended impedance calculator. Reference: R. g. 4 mils) and are 5 mils above the nearest plane with a dielectric whose relative dielectric constant is 4. Online impedance calculators are fine if you only care what happens at a single frequency, such as in high frequency analog signals. What are the limits of the trace width calculator? The formulas used in the calculator are based off IPC-2221 (formerly IPC-D-275), which covers up to 35 Amps, trace widths up. 9E-3 [1/°C], T TEMP is the trace temperature [°C]The IPC-2141 trace Impedance calculator will help make initial design easier by allowing the user to input basic parameters and get a calculated impedance according to the IPC-2141 standard. 0683mm. . to select appropriate isolation materials, layer thickness, trace width, distance between traces,. 378tA. T. The microstrip calculator determines the width and length of a microstrip line for a given characteristic impedance (Zo) and electrical length or vice versa. 44 x A0. Another advantage of assigning the impedance property is that allegro automatically assigns the width of the track based upon the. In fact, striplines often make components such as band-pass filter's more accurately, with more symmetric roll-off and no lower cutoff frequency. Access Advanced Circuits' printed circuit board trace width tool. , broadside coupled, embedded microstrips, symmetric or asymmetric. 4-Layer Impedance Control Stackup. Next, determine the trace height/length. After providing the required impedance data, click on calculate impedance to view the required trace width, calculated impedance, and propagation delay. It supports both balanced and unbalanced lines. Find a Location Avnet Americas. It is intended only as a very crude estimate, as I. In my layer stack manager, I have the following: Note that Altium calculates that the trace should be ~100 mil wide, which is significantly higher than what the datasheet suggests (0. A cross-hatch plane is shown in the image below. 062. To use this tool, enter the values for trace thickness, substrate height, trace width. (Sorry guys, I live and I have grown up in a metric world ) With these values, Saturn PCB's off-line calculator gives 57 Ohm differential impedance. Most CAD systems provide an impedance calculator for this. Even Mode Impedance (Zeven) Ω . This is good enough so we can now switch to the “Coupled Microstrip Line” calculator. 254mm, spacing between both is required 0. All the impedance matching trace width calculator seem to consider that there is a ground plane on bottom. 0mm Outer Copper Weight. The wider a trace is, the easier it is to fabricate. The calculated impedance was 36. 3. Trace Spacing Calci 3. W represents trace width. With t = 0. The subsequent dialog that appears - the Impedance Formula Editor dialog - contains impedance calculators for both Microstrip and Stripline impedance. I found that a W of 0. You can then check this PCB trace width against. However, a 5mil stripline trace featuring ground 6 mils below and above will produce about 50. 063" thick PCB, that means a trace width around 120 mil. This Javascript web calculator calculates the resistance, voltage drop, and power loss of printed circuit board vias. PI Network Impedance Matching. 2, the resulting trace width required for 50 Ohm impedance would be 15. 7mil. This tool will also compute the resistance of the stripline, the voltage drop on it, and the resulting power dissipation. The next graph investigates this further. This calculator is designed to calculate the characteristic impedance of a symmetric stripline - a flat conductor between two ground planes whose distance between the conductor and the planes is the same for both reference planes. The tool generates odd, even, common, and differential impedance as output values. Reflex Klystron Calculator. Stripline Trace. 2E-6 Ohm-cm. The fabricator will advise what material thicknesses are available and what precision they can achieve for trace widths. Home;. Obviously, there is no ground on the bottom side. 5 mil (0. You can better understand your calculator results by becoming familiar with the following formulas. What is the width of a trace for 100 ohm impedance? The width of a trace for a specific impedance depends on the dielectric constant, height above the reference plane, and other parameters. F-A t t enua t o rs. Impedance captures the real. This change in trace width leads to a change in impedance and hence causes signal reflection. The trace width, spacing, and impedances along each trace are shown along the length of the two routes. Just enter the given values for trace thickness, substrate heights, trace width and subtrate dielectric in the calculator above and press the "calculate" button. It displays the impedance of the input and output match in a 50Ω test environment as measured on a network analyzer. Stripline. Rectangle Loop Inductance Calculator. Use the KiCad calculator (or other calculator) to estimate the trace width, associated with the distance to ground, required to get the impedance you wantCoax Impedance (Transmission Line) Calculator. 2mm0. Convert units, calculate control impedance, trace width & via current. Since my layer thickness is 0. Trace Width, Spacing, and Thickness. The JLCPCB Impedance Calculator computes track width values and recommended stack-ups from user-input values of board thickness, copper weight, layer,. Calculate the width of a copper-printed circuit board conductor (internal trace) necessary to carry a specified current. For example, with a thickness of 0. You will see the trace width is 5. Such a stripline is constructed with two traces referenced to the same reference planes above and below the traces with a dielectric material between them. Dielectric thickness vs. Altium will assume you want to confine the signal to your trace (and ground plane), rather than cause radiation. Aside from impedance and annular ring calculations, one of the other major formulas specified in this standard relates temperature rise, trace width, and trace current. Typ e, V ref and, if needed, I a d j , select the field you want to calculate (one of the resistors or the output voltage) and enter the other two values. 8mm1. Modeling approximation can be used to understand the impedance of. This change in trace width leads to a change in impedance and hence causes signal reflection. 127mm. In a traditional PCB design, the designer specifies the width/clearance of the trace to satisfy the current/voltage requirements. The JLCPCB Impedance Calculator computes track width values and recommended stack-ups from user-input values of board layer, thickness, copper weight, target. Sorted by: 8. It is not always possible to adjust trace length and width, hence implementing lower copper thickness is one of the feasible ways. 510 mm, or 20 mils, and the minimum inductance is 292 nH/m. To calculate the trace width/spacing, I used SaturnPCB. Some of its key features are; displays insertion. What is Microstrip Impedance?For my results, I find that the minimum inductance is 292 nH per meter when ( w/h) = 1. PCB Trace Width Calculator. 13mm (depends on manufacturer's specs) and you get a trace width of ~0. 2 Loss of CPW lines. Consider the following points to limit the flexible PCB errors in the bend areas: Avoid 90-degree bends. They are:. 8065. That trace width was chosen to match the pin size of the Wi-Fi module and the antenna connector. 48. 6 mm; trace width: 1 mm; trace spacing: 0. RF Wireless World. This calculator determines the impedance of a symmetric differential stripline pair. R. This calculator will calculate trace current/temperature parameters for virtually any size trace thickness and width. 062. In HDI boards, where BGAs of fine pitch are used, careful selection of trace widths and height are employed to escape the traces between pads and vias in pads. T=trace height . T-Match Topology. In the attachment you can see that in the Stack up Editor, I can calculate trace width for single ended trace that gives 50 ohm impedance for a given stack up settings. UL Certification - Flex & Rigid Flex PCBs. A PCB. This tool is designed to calculate the resistance of a microstrip trace with a copper conductor. Broadside Trace Inductance Calculator. 6 Band Resistor. Note: The trace on the inner layer need to be much wider than the trace on the outer. The default units for all given values, except the subtrate. Trans Line. Altium Designer’s impedance calculator takes your board layer stackup information and sends the trace width and thickness results to your design rules. Sierra Circuits’ Trace Width calculator Sierra 3-in-1 trace current calculatorThe trace width calculator uses empirical formulas based on long traces with no special heat sinking. Figure 2. This is more than the to times trace width which is recommended (also read as close as possibly). Multiply the result by the square root of the ratio of (1 + (2 * h / w)) to (1 – (2 * h / w)). Determining trace impedance and propagation delay in PCB traces takes a trace length calculator and impedance profiler tool, and these features work best when they are integrated into your PCB design software. If you want a thinner microstrip, you need to reduce the substrate height using one of the following solutions: Use a thinner 2-layer PCB, for example 0. Calculate inductance, capacitance, and achieve impedance matching using L-match. 725. The KiCad PCB Calculator is a set of utilities to help you find the values of components or other parameters of a layout. We get a lot of questions about trace impedance and how to calculate the right trace size to hit a specific impedance in a manufacturable PCB. IPC-2221 establishes standards for PCB design aspects such as schematic, material selection, thermal management, DFM, DFA, DFT, and quality assurance. 05; The manufacturer provides a stack up as well as a 2D calculator for determining trace width: here The manufacture's calculator computes 3. 6 4 8 12 16. To use this tool, enter the values for trace thickness, substrate height, trace width, trace spacing, and dielectric constant in the calculator above and press the "calculate" button. 5 oz. It is not uncommon that the calculated trace width will be a value that cannot be ordered, for. Edge Coupled Stripline Differential Impedance Calculator.