Semiconductor Pin Diode Capacitance Vs Voltage Calculator
Read actual PIN diode bias/capacitance curve with independent package stray, distinct from ideal varactor grading equation; no extrapolation or bias recommendation.
Description
A measured PIN junction-capacitance curve can be combined with independent parallel stray capacitance.
A measured PIN junction-capacitance curve can be combined with independent parallel stray capacitance.1
This keeps the bias response separate from the package contribution.
When to use Semiconductor Pin Diode Capacitance Vs Voltage Calculator
Use this tool when you need to reproduce the stated calculation from measured records or independently selected model inputs. Prepare measured device or specimen records under independently matched branch, temperature, frame, and unit conventions.
How to use Semiconductor Pin Diode Capacitance Vs Voltage Calculator and understand its results
- Prepare measured device or specimen records under independently matched branch, temperature, frame, and unit conventions.
- Enter observedPinReverseV, observedPinJunctionCapacitanceFarads, observedIndependentParallelStrayFarads, queryReverseV, following the field table and rules below, then run the tool.
- Read interpolatedPinJunctionFarads, modeledTotalPinFarads, localPinCapacitanceDerivativeFaradsVolt. Use the output meanings below to interpret units, signs, flags, and any nested result fields.
- Correct reported input issues and run again. For a successful result, check the stated evidence coverage and assumptions before using it in your review.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| observedPinReverseV | Observed pin reverse v | list of number | Required |
| observedPinJunctionCapacitanceFarads | Observed pin junction capacitance farads | list of number | Required |
| observedIndependentParallelStrayFarads | Observed independent parallel stray farads | number | Required |
| queryReverseV | Query reverse v | number | Required |
Use at least two strictly increasing nonnegative reverse voltages with aligned nonnegative junction capacitances in farads, an in-range nonnegative query, and nonnegative parallel stray. Interpolate junction capacitance, add stray, and return the local farads-per-volt slope.
Cjunction=linearInterpolation(voltage,capacitance,q); Ctotal=Cjunction+Cstray Symbols follow the input and output meanings and the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| interpolatedPinJunctionFarads | Interpolated pin junction farads | number |
| modeledTotalPinFarads | Modeled total pin farads | number |
| localPinCapacitanceDerivativeFaradsVolt | Local pin capacitance derivative farads volt | number |
{
"input": {
"observedPinReverseV": [
0,
1,
2
],
"observedPinJunctionCapacitanceFarads": [
3,
2,
1
],
"observedIndependentParallelStrayFarads": 0.5,
"queryReverseV": 1.5
},
"output": {
"interpolatedPinJunctionFarads": 1.5,
"modeledTotalPinFarads": 2,
"localPinCapacitanceDerivativeFaradsVolt": -1
}
}Limitations and assumptions
Matched measurement branch, material state, calibration, and conventions must be independently established. Results do not certify device performance or operating conditions.
Missing required fields, unknown fields, wrong types, and violated calculation rules are input issues. Numeric values must be finite; nonfinite results are rejected. Evidence arrays must be dense, with no missing cells. Numeric observation lists allow at most 10,000 entries, subject to any smaller bounds stated above.
Alternative or Complementary methods
For a related review, use Semiconductor Pin Diode Resistance Vs Current Calculator: A PIN diode’s small-signal resistance belongs to a matched frequency and bias branch. Interpolating intrinsic resistance and adding independently measured package resistance separates the two contributions. For a complementary step, use Semiconductor Schottky Diode Ideality Factor Vs Temperature Calculator: An observed local voltage slope per natural-log current can be normalized by thermal voltage to obtain ideality factor. Matched temperatures and the declared Boltzmann convention define the calculation.
References
Similar or alternative tools
- Semiconductor Pin Diode Resistance Vs Current Calculator
A PIN diode’s small-signal resistance belongs to a matched frequency and bias branch. Interpolating intrinsic resistance and adding independently measured package resistance separates the two contributions.
- Semiconductor Schottky Diode Ideality Factor Vs Temperature Calculator
An observed local voltage slope per natural-log current can be normalized by thermal voltage to obtain ideality factor. Matched temperatures and the declared Boltzmann convention define the calculation.