Four‑channel optical isolators with 1.27 mm half‑pitch, 3000 V RMS isolation and wide temperature range.
The IS281-4 and IS281-4GB are four‑channel optical isolators that combine an infrared emitting diode with an NPN silicon phototransistor. They belong to Isocom's Compact Range of optocouplers and are offered in a surface‑mount THP4 package.
Key features include a 1.27 mm half‑pitch, 3000 V RMS AC isolation voltage, operation from –55 °C to 110 °C, RoHS compliance, and UL approval. The devices are supplied on tape and reel (2000 pcs per reel) for high‑density mounting in industrial controllers, measuring instruments, and system appliances.
| Half Pitch | 1.27 mm |
|---|---|
| High AC Isolation Voltage | 3000 V RMS |
| Operating Temperature Range | -55 °C to 110 °C |
| Input Forward Current | 50 mA |
| Reverse Voltage | 6 V |
| Power Dissipation (Input) | 70 mW |
| Total Package Isolation Voltage | 3000 V RMS |
| Storage Temperature Range | -55 °C to 150 °C |
| Lead Soldering Temperature (10 s) | 260 °C |
The devices provide a maximum AC isolation voltage of 3000 V RMS.
They operate from –55 °C to 110 °C.
They are supplied in tape and reel format with 2000 pieces per reel.