The 4N26VM provides 4170 Vrms galvanic isolation between a DC input LED and a phototransistor output with base access — enough to separate a low-voltage control side from a 30 V output rail in industrial logic-level interfaces, PLC input modules, or power-supply feedback loops where transient immunity matters. Minimum current transfer ratio of 20% at 10 mA forward current means the output transistor sinks at least 2 mA into a 5 V pull-up — enough to drive a TTL or CMOS gate input without an extra buffer stage, provided the load resistor is sized for the 30 V output ceiling. Typical turn-on and turn-off times are both 2 µs, so the part handles 250 kbit/s data rates comfortably — marginal for 1 Mbit/s but fine for status feedback, relay drivers, or slow serial links where edge jitter is not critical.
onsemi 4N26VM Optoisolator, 4170Vrms, 6-DIP, Obsolete
MPN4N26VM
Obsolete
onsemi 4N26VM optoisolator, 1-channel DC input, transistor with base output, 4170Vrms isolation, 6-DIP (0.300", 7.62mm) through-hole package, tube.
$0.2500Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Input type | DC |
| Output type | Transistor with Base |
| Mounting | Through Hole |
| Voltage - isolation | 4170Vrms |
| Voltage - output | 30V |
| Voltage - forward (Vf) | 1.18V |
| Current transfer ratio | 20% @ 10mA |
| Current - DC forward (If) | 60 mA |
| Operating temperature | -40°C~100°C |
| Package | Tube |
| Case | 6-DIP (0.300\", 7.62mm) |
| Channels | 1 |
| Vce saturation | 500mV |
| Turn on (Turn off time) | 2µs, 2µs |