BY329X-1200 Rectifier Diode Fast – Soft Recovery 1200V 8A
The BY329X-1200 is a glass-passivated, double-diffused rectifier diode designed for applications that need fast switching and a soft reverse-recovery characteristic. Packaged in a compact SOD113 full-pack plastic envelope with an electrically isolated seating plane, this device delivers robust blocking capability up to 1200 V while maintaining a low forward-voltage drop under load. Its construction emphasizes reliable thermal behavior and predictable electrical performance in demanding power circuits.
Engineered for average forward currents around 8 A and capable of withstanding short non-repetitive surge currents, the BY329X-1200 balances steady conduction with transient robustness. The diode’s soft recovery (trr typ. ~125–145 ns) and modest reverse-recovery charge make it suitable where switching losses and EMI from abrupt current reversal must be minimized. Thermal ratings and isolation characteristics help simplify heatsinking and mounting in compact power assemblies.
Mechanically light (≈2 g) and delivered in a heatsink-compatible plastic package, the BY329X-1200 is a practical choice for TV/monitor front-end rectification, switched-mode power supplies and other medium-power conversion tasks. The datasheet provides comprehensive limiting values, thermal resistances and dynamic characteristics so designers can size the device safely for both steady and surge conditions.
Features:
- Fast rectifier with soft reverse recovery characteristic.
- Glass-passivated, double-diffused construction for stable electrical behavior.
- High repetitive peak reverse voltage rating (1200 V).
- Average forward current rating of 8 A suitable for medium-power circuits.
- Low forward voltage drop under load for efficient conduction.
- Capable of withstanding high non-repetitive surge currents.
- Electrically isolated SOD113 full-pack plastic envelope for easy mounting.
Specifications:
| Parameter: | Value: |
|---|---|
| Repetitive peak reverse voltage: | 1200 V |
| Average forward current IF(AV): | 8 A |
| Non-repetitive peak forward current IFSM: | 65 A |
| Reverse recovery time trr: | 125 ns — Max 145 ns |
| Reverse recovery charge Qs: | 0.5 µC — Max 0.7 µC |
| Forward voltage VF (IF = 20 A): | 1.5 V — Max 1.85 V |
| Reverse current IR (VR = VRWM; Tj=125°C): | 0.1 mA — Max 1.0 mA |
| dIR/dt (max slope): | 50 A/µs — Max 60 A/µs |
| Isolation voltage Visol: | 2500 Vrms |
| Capacitance Cisol (f = 1 MHz): | ≈ 10 pF |
| Thermal resistance Rth(j-hs): | 4.8–5.9 K/W (with/without compound) |
| Thermal resistance Rth(j-a): | ≈ 55 K/W (free air) |
| Operating junction temperature Tj: | – to +150 °C |
| Storage temperature Tstg: | –40 to +150 °C |
| Package / Pinning: | SOD113; pin 1 = cathode, pin 2 = anode |
| Net mass: | ≈ 2 g |
Applications:
- TV and monitor rectification front-ends.
- Switched-mode power supplies (SMPS).
- General medium-power rectification in consumer electronics.
- Circuits requiring reduced EMI from soft reverse recovery.
Package Contents:
- 1x BY329X-1200 Rectifier Diode Fast – Soft Recovery 1200V 8A
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