The Components Engineering Library
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| Resistors | Capacitors | Inductors |
Resistors (Fixed)
Making crosses for Resistors can be simply done by matching parameters. Our venders (left column) can help in making matches and purchases. The sales reps on the right column can find sources.
Click on Parameter or Units
| Parameter | Units |
|---|---|
| Resistance | Ohms |
| Power | Watts |
| Tolerance | Percent (%) |
The unit of resistance is ohms. The value of ohms must match the value of ohms needed to achieve a matching device. If values cannot be matched. Connecting resistors in parallel or series can achieve a matching value. Resistance in series is additive.
R total = R1 + R2 + R3 +Rn
Resistance in Parallel can be calculated with this formula.
R total = 1/R1 + 1/R2 + 1/R3 + 1/Rn
Power (Watts)
The unit of power in resistors is watts. Resistance wattage is the amount of power that the resistor and handle. Exceeding this value will result the failure of the resistor. To achieve a match the wattage much either be a match or exceed the original value.
Tolerance
The Tolerance is the accuracy of the resistor's value in Ohms vs the true value of the resistor in Ohms. Quite often either a match can be achieve by matching the Tolerance or exceeds the original value.
Size and Type
There are a number of types of resistors to take into consideration. Here are several types with pictures.
Axial (Leaded) Resistor
Surface Mount Resistors
Toroid Resistors
