Phototransistor (PT204)
PT204 NPN phototransistor (2 leads: collector and emitter) · light acts as base current · about 1 mA at 1000 lux · 300 lux
Try it on the benchThe lab drops it on an empty bench and opens its datasheet card.
Typical part: PT204 phototransistor
Pins
- C (collector, short lead)
- E (emitter)
Ratings and limits
| I_C | ≈ 1 mA at 1000 lux |
|---|---|
| V_CE | 30 V |
| Response | ≈ 15 µs |
How to use it
Light replaces base current. Collector to the supply through a resistor, read the collector: light pulls it down. Pairs with an IR LED for slot and line sensors.