The onsemi H11A43SD is a single-channel optoisolator with a DC input LED and a phototransistor output that brings the base terminal out to pin 6 — useful when you need external base drive or a Miller clamp on the output side. Rated for 5300Vrms isolation, it sits in the 6-SMD gull wing package (supplier device package 6-SMD) and operates from -55°C to 100°C, covering industrial and some military temperature bands. Minimum current transfer ratio is 10% at 10 mA forward current, and the typical turn-on/turn-off time is 2 µs each — fast enough for 100 kHz-ish switching in isolated feedback or logic-level translation.
onsemi H11A43SD Optoisolator, 5300Vrms, 6-SMD Gull Wing
MPNH11A43SD
Obsolete
onsemi H11A43SD optoisolator, 1-channel DC input, transistor with base output, 5300Vrms isolation, 6-SMD gull wing package, surface mount.
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Input type | DC |
| Output type | Transistor with Base |
| Mounting | Surface Mount |
| Voltage - isolation | 5300Vrms |
| Voltage - output | 30V |
| Voltage - forward (Vf) | 1.18V |
| Current transfer ratio | 10% @ 10mA |
| Current - DC forward (If) | 100 mA |
| Operating temperature | -55°C~100°C |
| Package | Tape & Reel (TR) |
| Case | 6-SMD, Gull Wing |
| Channels | 1 |
| Vce saturation | 400mV |
| Turn on (Turn off time) | 2µs, 2µs |
Product details
Frequently asked questions
Is H11A43SD available via RFQ confirmation and what is the lead time for an order?
This obsolete part is sourced through independent distribution channels.