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Please note that when using the IPC-2152 with modifiers option, the amperage value has a slight drop at 10,20,30,40,50,60,70,80,90,100,200,300,400,500,600 & 700sqmils. This is due to a multiplier used for each cross sectional area range. All values are within +/-10% of the chart values however. If you do not need to minimize conductor width on your PCB,
you can use the IPC-2152 without modifiers option where there is no multiplier effect.
 

Product Revision Notes

Version 5.65 Updates & Additions:

Corrected imperial values for Conductor Spacing calculator in B3 mode for 251-500V

Version 5.64 Updates & Additions:

Added PPM Calculator for crystal toloerance values.
Added Via Thermal Resistance output to Via Properties.

Version 5.63 Updates & Additions:

Fixed startup error in Signal Properties calc in metric mode.
Added Etch Factor note in Conductor Properties.
Added minimum width limit to Conductor Width in Conductor Properties calc to prevent a negative cross section value.

Version 5.62 Updates & Additions:

Removed conductor width derating and replaced it with conductor etch factor.

Version 5.61 Updates & Additions:

Fixed metric wavelength value.

Version 5.6 Updates & Additions:

Fixed Edge Coupled Int Asym diff pair calc. (Had beta formula still in code) Still a work in progess for this calc.
Added dB gain to Conversion Data tab. (Still work in progress, more to come on this)

Version 5.5 Updates & Additions:

Added embedded resistors tab.
Fixed DC resistance in metric mode for conductor calculator.

Version 5.4.1 Updates & Additions:

Corrected the embedded differential pair calculator.

Version 5.4 Updates & Additions:

Corrected the W/H and S/H error in the broadside differential pair calculator. (B7)
Removed the T/H label from the CPW claculator. (B6)
Changed the "Top Side Conductor Percentage" to "Conductor Width Derating" (B5) This may change again or go aways as we look for a better way to handle this.
Changed stipline formula restriction to 0.1 < W/H <2.0. (B4)
Corrected improper location of "Invalid" flag in coplanar waveguide calculator. (B4)
Corrected outer pad diameter error in padstack calculator for metric setting. (B3)
Fixed Er Eff decimal point issue. (B2)
Seperated fusing current from conductor properties calculator.
Added a "Solve for Condutcor Width" option for IPC-2151 without modifiers and IPC-2221A calculators.
Repalced internal (hard codeed) conductor trapazoid shape adjustment with settabe percentage in options
Updated asymetric stripline calculator formula to Brian C. Wadell formula.
Fixed IPC-2152 with modifiers not being selected at program startup after user sets this option.
Fixed error message in 2 layer via calculator when entering a larger than defaul value for via hole diameter.

Version 5.32 Updates & Additions:

Added notes next to H1 / H2 in asymmetric stripline calculator.

Version 5.31 Updates & Additions:

Fixed outer pad diameter error in padstack calculator.
Fixed drill chart text wrap error.

Version 5.3 Updates & Additions:

Updated installer to support Windows 7.
Updated formulas for all of the conductor impedance models.
Updated formulas for all of the differential pair impedance models.
Added ability to include Er effective to the wavelength calculator.
Changed how the wire gauge calculator works, added max amps in air.
Added edge coupled embedded differential pair to calculator.
Added inches and um to conversion data.
Fixed "Enter copper weight manually" display issue.
Added imperial units to the minimum conductor spacing calculator.
Added indicator to show when differential impedance is within tolerance of a target impedance.
 

Version 5.2 Updates & Additions:

Fixed Temprise & Ambient Temp enable / disable when Fuse current vs. Time mode selected after user exists Conductor Properties.
Fixed Temprise C vs. F scale.

Version 5.1 Updates & Additions:

Plating Thickness now disables when internal layer is selected for conductor properties.
Plane Distance now disables when fuse current option is selected for conductor properties
Added IPC version to options for conductor current.
Fixed Temprise F scale when 0C is selected.
Updated default values for via settings.

Version 5.0 Updates & Additions:

Significantly changed how the program calculates amperage to better match the IPC-2152 charts.

Please note that the amperage value has a slight drop at 10,20,30,40,50,60,70,80,90,100,200,300,400,500,600 & 700sqmils.
This is due to the multiplier used for each cross sectional area range. All values are within +/-10% of the chart values however.

Version4 series PCB Toolkit follows the new IPC-2152 chart as well but uses the general chart which can be too conservative in some applications. Implementing the new IPC-2152 has been no easy task since no new formulas were produced in the document. This has forced us to derive at our on formulas for current vs. temprise so please check back often for updates to this V5 beta program.