LED

Key data

Category

Semiconductors

Simulation model

Built-in circuit element

Reference prefix

D

Pins

2

Land pattern

LED_0603_1608Metric

Notes

The model is a diode whose saturation current is fitted so that the forward voltage of the chosen colour is reached at 20 mA (with the "star" package: at 700 mA, for 1–3 W power LEDs). Red, orange, yellow and green need about 2 V, blue, white and pure green about 3 V, infrared 1.3 V.

• Always use a series resistor: R = (V_supply − V_F) / I. Example: 5 V, red LED, 15 mA → (5 − 2) / 0.015 ≈ 200 Ω, next standard value 220 Ω.
• Indicator LEDs need 2–20 mA. Above 30 mA (star package: 1 A) or more than 5 V in reverse the simulation marks the LED as overloaded.
• Hover over the LED during the simulation to read its current.

Simulation model

Diode fitted to the forward voltage of the colour at 20 mA (star package: at 700 mA). In the editor its brightness follows the current.

Primitive

LED

Model cards

Pins 2

Parameters 2

PCB