Diac Db2 Datasheet Pdf 14 Top Better 100%

Diac DB2 Datasheet — Top 14 Points 1. Product overview

Name: Diac DB2 Type: Diode for Alternating Current (DIAC) — bidirectional trigger device used to initiate conduction in TRIACs and similar thyristor circuits. Typical use: Triggering TRIACs in AC switching, lamp dimmers, motor speed controllers, and surge protection circuits.

2. Package and form factor

Package options: Commonly available in DO‑35 glass axial package and surface-mount variants (check specific datasheet). Mounting: Through-hole axial; some manufacturers offer SMD versions for compact boards. diac db2 datasheet pdf 14 top

3. Electrical characteristics — key ratings

Breakover voltage (VBO): Typical range ~28–40 V (device conducts when voltage across DIAC exceeds VBO). Peak repetitive off-state voltage (VDRM/VRRM): Usually around 600 V for high-voltage variants; many DB2 types rated for 200–400 V. On-state voltage (VTM/VT): Small forward voltage when conducting, typically a few volts. Holding current (IH): Current below which device returns to off state; often in the range of 1–50 mA depending on model.

4. Trigger characteristics

Bidirectional: Symmetrical conduction in both polarities, enabling AC operation. Spread: Manufacturing tolerance yields variation in VBO — check datasheet for min/typ/max values and temperature dependence.

5. Power and thermal

Pulse handling: DIACs are not meant for continuous high current; they handle short trigger pulses. Power dissipation: Low steady-state dissipation; datasheet lists maximum repetitive and non‑repetitive surge currents and thermal limits. Operating temperature range: Typically −40°C to +125°C, verify specific part spec. Diac DB2 Datasheet — Top 14 Points 1

6. Reliability and lifetime

Robustness: Solid-state, long life if operated within ratings. Failure modes: Overvoltage or sustained high current can cause thermal runaway or junction damage.