Description
The TLP521-1 is a single-channel optocoupler (opto-isolator) consisting of an infrared light-emitting diode (LED) optically coupled to an NPN phototransistor. It enables electrical isolation between low-voltage control circuits and higher-voltage power or noisy sections of electronic systems by transmitting signals via light within a compact 4-pin DIP (Dual In-Line Package) or equivalent surface mount package.
FEATURES
- Channels: 1 channel
- Isolation Voltage: ~2500–5300
- Input LED Forward Current: 50 mA
- Input LED Forward Voltage: ~1.1–1.3 V
- Maximum Collector-Emitter Voltage: 55 V
- Current Transfer Ratio: ~50 % – 600 %
- Turn-On / Turn-Off Time: ~2–4 µs
- Operating Temp: ~−30°C to +100°C
- Mounting Style: Through Hole
SPECIFICATION
- Dimension: 7.62 × 4.6 × 4.5 mm
- Additional information
- Gross weight: 0.26 g
- Manufacturer part number: TLP521-1





