Specs side by side
2 parts compared · 18 differing specs across 18 total parameters.
| Parameter | ||
|---|---|---|
| Voltage - Isolation | 5300Vrms | - |
| Operating temperature | -55°C ~ 100°C | - |
| Voltage - Forward (vf) | 1.18V | - |
| Voltage - Output | 30V | - |
| Case | 6-DIP (0.300\", 7.62mm) | DIP-6 |
| Package | Tube | - |
| Channels | 1 | - |
| Component Category | - | Phototransistor Optocouplers (6-pin) |
| Current - Dc Forward (if) | 100 mA | - |
| Current Transfer Ratio | 20% @ 10mA | - |
| Input Type | DC | - |
| Market Reality | - | The 4N2x / 4N3x row is the general-purpose opto that predates the PC817 and still fills industrial boards, instruments and old audio gear: a 6-pin DIP with an infrared LED, a phototransistor, and one extra pin the 4-pin generation gave up - the base of the phototransistor, brought out for speed-up tricks and threshold trimming. The family is a CTR ladder wearing four part numbers: 4N25/26 at 20% minimum, 4N27/28 at 10%, and the 4N35/36/37 trio at 100% - one of the highest CTRs of any general-purpose opto, which is why it survives in circuits that need gain more than speed. Substituting within the row is honest work; substituting against the 4-pin PC817 row is the classic socket error. |
| Mounting | Through Hole | - |
| Output Type | Transistor with Base | - |
| Role In Circuit | - | Original Reference Part |
| Sourcing Status | - | Active Shenzhen Spot Sourcing (24–48h) |
| Turn On (turn Off Time) | 2µs, 2µs | - |
| Vce Saturation | 500mV | - |
Parts
- 4N25 · onsemi
- 4N35 / 4N25 · onsemi