This document introduces the features and characteristics of the AQV251 series optocoupler isolation relay, including high sensitivity, low on-resistance, multiple load types, extremely high isolation voltage, low leakage current in the off state, and no need for a power supply to drive the power MOSFET.
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The NAIS AQV250 series PhotoMOS relays provide high‑function economy switching with optical isolation up to 5 kV. They are available in standard (1,500 V AC) and reinforced (5,000 V AC) isolation types and support low‑level off‑state leakage, eliminating the need for a separate MOSFET driver supply.
The datasheet lists absolute maximum ratings, electrical characteristics, and extensive temperature‑dependent graphs for load current, on‑resistance, turn‑on/off times, and LED behavior. Typical applications include high‑speed inspection machines, telephone equipment, and data communication devices.
| I/O isolation voltage (standard type) | 1,500 V AC |
|---|---|
| I/O isolation voltage (reinforced type) | 5,000 V AC |
| Operating temperature range | 40 °C to +85 °C |
| Storage temperature range | 40 °C to 100 °C |
| Power dissipation (typical) | 360 mW |
| LED forward current (standard type) | 50 mA |
| Turn‑on time (typical) | 1.7 ms |
The standard type offers 1,500 V AC isolation.
The relays can operate from 40 °C up to +85 °C.
No, the built‑in optoelectronic device eliminates the need for an external power supply.
Typical turn‑on time is about 1.7 ms.