4170 Vrms isolation for motor-drive and PLC signal separation
The H11N1SR2VM from onsemi is a single-channel optoisolator with a 4170 Vrms isolation rating, built for galvanically separating high-voltage power stages from low-voltage control logic in motor drives, PLC I/O modules, and industrial sensors. Its open-collector output and 5 MHz data rate handle encoder pulse trains, fieldbus gateways, and high-speed digital signals without the propagation delay bottleneck of slower optos — 330 ns max tpLH/tpHL. The 6-SMD Gull Wing package is surface-mount reflow compatible, and the part is rated over the full industrial temperature range of -40°C to 85°C, making it a fit for factory-floor and outdoor telecom enclosures.
5 MHz data rate with 7.5/12 ns edges
Typical rise and fall times of 7.5 ns and 12 ns mean the H11N1SR2VM can pass 5 MHz square waves with minimal duty-cycle distortion — important for timing-sensitive interfaces like incremental encoder A/B channels or isolated SPI clock lines. The 50 mA continuous output current per channel drives standard logic families (TTL, CMOS) directly; the 4V to 15V supply range lets the output side match 5V or 3.3V logic without a level shifter. Input forward voltage is 1.4 V typical at 30 mA max — the LED drive current is low enough to be sourced directly from a microcontroller GPIO through a series resistor.
Active lifecycle — no end-of-life watch needed
onsemi lists the H11N1SR2VM as Active with ROHS3 compliance. The Tape & Reel (TR) and Cut Tape (CT) packaging options cover both volume production and prototype kitting. Sourced per RFQ — confirm current lead time and pricing at quote time.