The PS7241E-1A is an optically coupled element from NEC Electronics that combines a GaAs infrared LED on the input side with a normally-open MOS FET on the output side to realize an excellent cost performance. The small, thin package and high sensitivity of this element makes it ideal for battery-driven mobile devices, and its small offset voltage at power-on and good linearity are also make it suitable for controlling micro analog signals.
The PS7241E-1A is an optically coupled solid‑state relay that combines a GaAs infrared LED on the input side with a normally‑open MOSFET on the output side. It is supplied in a compact 4‑pin SOP package (height 2.1 mm) and is suited for battery‑driven mobile devices, laptops, PDAs, modem cards, telephones, fax machines, and measurement equipment.
Key electrical characteristics include a 400 V breakdown voltage, 120 mA continuous load current, 1 A peak forward current, 1500 V isolation voltage, and a power dissipation of 50 mW (300 mW in AC/DC switching mode). The device meets UL (No. E72422) and BSI (No. 8241/8242) safety standards.
| Breakdown Voltage | 400 V |
|---|---|
| Continuous Load Current | 120 mA |
| Peak Forward Current | 1 A |
| Isolation Voltage | 1500 V |
| Power Dissipation (DC) | 50 mW |
It is supplied in a 4‑pin SOP package with a height of 2.1 mm.
The device is UL approved (No. E72422) and BSI approved (No. 8241/8242).
Typical applications include laptop PCs, PDAs, modem cards, telephones, fax machines, and measurement equipment.