Schottky diode (1N5819, SR560, 1N5822, SS34)
1N5819 · Schottky · 1 A · 40 V · low Vf
Try it on the benchThe lab drops it on an empty bench and opens its datasheet card.
Typical part: 1N5819 / SS34
Pins
- Anode
- Cathode (band)
Ratings and limits
| Peak inverse voltage | 40 V |
|---|---|
| Forward current | 1 A |
| V_F | ≈ 0.3–0.45 V |
How to use it
Low-drop rectifier for switch-mode supplies and power ORing (solar, battery backup): less heat than a silicon diode, but more reverse leakage.
Lessons and builds that use it
- PWM actuator: DC motor through a MOSFET
- Buck converter from parts
- Boost converter from parts
- SEPIC: output above and below the input
- Fault-finding a switch-mode output
- Solar garden light with dusk switch (build)
- 65 W USB-C PD charger from scratch: mains flyback (UC3844, 800 V MOSFET, PQ2625 transformer), TL431 + PC817 feedback, PD controller (build)
- 8. Voltage regulator: a 12 V supply and a steady 5 V (build)
- 9. Comparator: a clean decision at dusk (build)
- 10. Relay: switching a real lamp (build)
- 11. PIR sensor: only when someone is there (build)
- 12. 555 timer: stay on after they pass (build)
- 13. Buzzer: an alarm mode (build)
- 14. Solar: the light runs off-grid (build)