TLP785GB

The TLP785GB is an optocoupler (or photocoupler) from Toshiba, designed for signal isolation in electronic circuits. It features a GaAs infrared LED paired with a phototransistor, providing electrical isolation between input and output (up to 5kVrms).
Key specifications:
- Isolation voltage: 5kVrms
- Current Transfer Ratio (CTR): 50-600% (ensures reliable signal transmission)
- Switching speed: ~3μs (suitable for moderate-speed applications)
- Package: DIP-4 (compact and widely compatible)
Common uses include:
- Industrial controls (PLC, I/O interfaces)
- Power supply feedback
- Noise isolation in digital/analog circuits
The "GB" suffix indicates lead-free compliance (RoHS). Its robust design ensures stable performance in harsh environments.
For exact parameters, refer to the datasheet.

Equivalent products to the TLP785GB (a photocoupler/optocoupler from Toshiba) include:
- PC817 (Sharp)
- EL817 (Everlight)
- LTV817 (Lite-On)
- SFH618A (Vishay)
- H11AA1 (Fairchild/ON Semi)
These are general-purpose photocouplers with similar specs (e.g., 50mA forward current, 35V output). Verify pinout and parameters for exact compatibility.

The TLP785GB is a photocoupler (optocoupler) with the following key features:
- High Isolation Voltage: 5000 Vrms (min) for safety in high-voltage applications.
- Low Input Current: 5 mA (max) for efficient operation.
- Fast Switching Speed: 3 µs (max) turn-on/off time for quick response.
- High Current Transfer Ratio (CTR): 50% (min) at 5 mA input.
- Wide Operating Temperature: -40°C to +110°C for harsh environments.
- Compact Package: 4-pin DIP for space-saving designs.
- UL, CSA, and VDE Certified: Ensures compliance with safety standards.
Ideal for industrial controls, power supplies, and digital isolation where reliable signal transfer is critical.

The TLP785GB is a 4-pin photocoupler (optoisolator) with the following functions:
1. Pin 1 (Anode) – LED anode input.
2. Pin 2 (Cathode) – LED cathode input.
3. Pin 3 (Emitter) – Phototransistor emitter (output).
4. Pin 4 (Collector) – Phototransistor collector (output).
It provides electrical isolation (up to 5kVrms) and transfers signals via an infrared LED and a phototransistor. Common applications include signal isolation in industrial controls, PLCs, and power supplies.

The TLP785GB is a DIP-6 (Dual In-line Package, 6-pin) photocoupler. It features a compact, through-hole design suitable for PCB mounting, with a standard 2.54 mm pin spacing. The package is molded in black plastic, providing electrical isolation and durability. Ideal for applications requiring high-voltage isolation, such as power supplies and industrial controls.