SB120-SB1100 is a Schottky rectifier from Fairchild Semiconductor Corporation. It has a power dissipation of 1.25W and a thermal resistance of 80°C/W. It can be used in low voltage, high frequency inverters, free wheeling, and polarity protection applications.
The SB120‑SB1100 series are Schottky rectifiers designed for low‑voltage, high‑frequency inverter, free‑wheeling, and polarity‑protection applications. They operate at up to 75 °C without thermal runaway and are offered in a DO‑41 package with color‑band cathode identification.
Key specifications include a maximum average forward current of 1.0 A, a non‑repetitive peak surge current of 30 A, reverse voltage ratings from 20 V to 100 V depending on the part, power dissipation of 1.25 W, and a thermal resistance of 80 °C/W. The devices are rated for storage and operation from –65 °C to +125 °C.
| Average Rectified Forward Current | 1.0 A |
|---|---|
| Non‑repetitive Peak Forward Surge Current | 30 A |
| Maximum Repetitive Reverse Voltage | 20‑100 V (model dependent) |
| Power Dissipation | 1.25 W |
| Thermal Resistance, Junction‑to‑Ambient | 80 °C/W |
| Forward Voltage @ 1.0 A | 0.5‑0.85 V (model dependent) |
| Reverse Current @ 25 °C | 0.5 mA |
| Total Capacitance | 110 pF |
| Storage Temperature Range | -65 to +125 °C |
| Operating Junction Temperature | -65 to +125 °C |
The average rectified forward current is rated at 1.0 A.
They are rated for up to 100 V reverse voltage, with specific values ranging from 20 V to 100 V depending on the model.
No, Fairchild states the products are not authorized for use as critical components in life‑support devices without written approval.
They have a power dissipation of 1.25 W and a thermal resistance from junction to ambient of 80 °C/W.