1N486B is a small signal diode produced by Fairchild Semiconductor Corporation. Its maximum reverse voltage is 250V, average rectified forward current is 200mA, non-repetitive peak forward surge current is 1.0A or 4.0A, and storage temperature range is -65 to 200℃. The operating junction temperature is 175℃.
The 1N486B is a DO‑35 packaged small‑signal diode with a color band indicating the cathode. The datasheet lists its absolute‑maximum ratings, thermal characteristics and detailed electrical parameters.
Key specifications include a maximum repetitive reverse voltage of 250 V, an average forward current of 200 mA, surge current limits of 1 A (1 s) and 4 A (1 µs), power dissipation of 500 mW, and a junction‑to‑ambient thermal resistance of 300 °C·W. Ratings are based on a 200 °C maximum junction temperature, and the device is not authorized for life‑support applications without written approval.
| Maximum Repetitive Reverse Voltage | 250 V |
|---|---|
| Average Rectified Forward Current | 200 mA |
| Peak Forward Surge Current (1 s) | 1.0 A |
| Peak Forward Surge Current (1 µs) | 4.0 A |
| Storage Temperature Range | -65 °C to +200 °C |
| Operating Junction Temperature | 175 °C |
| Power Dissipation | 500 mW |
| Thermal Resistance, Junction‑to‑Ambient | 300 °C·W |
| Reverse Current at 225 V, 150 °C | 10 µA |
The maximum repetitive reverse voltage is 250 V.
No, Fairchild does not authorize its use in life‑support devices without written approval.
The diode can dissipate up to 500 mW.