Diac Db2 Datasheet Pdf 14 Top !!top!! File

You cannot test it with a standard multimeter's continuity or diode test. You need a variable DC power supply and a resistor. Connect the DIAC in series with a resistor, slowly increase the voltage, and measure the voltage across the DIAC. You will see it quickly "break over" and conduct once it reaches its VBO.

: While traditionally available in the axial DO-35 glass package , modern DB2 variants are frequently found in SOT-23 surface-mount packages for high-density PCB designs.

For detailed design, always refer to the specific STMicroelectronics DB3/DB4/SMDB3 datasheet for precise,, guaranteed voltage-current values.

), the device switches from an insulating state to a highly conductive state. This sudden drop in internal resistance causes a steep rise in current, producing a fast-rising voltage pulse ideal for firing the gate of a larger power semiconductor like a TRIAC. Key Electrical Technical Specifications diac db2 datasheet pdf 14 top

While the DB2 is a small signal device, it can handle repetitive peak currents of for short durations (10 ms at 50/60 Hz). This is sufficient to trigger most TRIACs in the Z0103, BT136, or BTA series.

+------------- AC Line -------------+ | | [Load] [Resistor] | | +-------[Main Terminal 2] +---[Capacitor]---+ | (MT2) | | [TRIAC] [DB2 DIAC] | | | | +-------[Gate]----------------------+ | | | +-------[Main Terminal 1]-----------------------------+ (MT1) 14 Top Technical Specifications in the DB2 Datasheet DB2 DIAC datasheets

Produces a sharp pulse edge to trigger thyristors. Low Cost: Very economical component for mass production. High Reliability: Solid-state construction. You cannot test it with a standard multimeter's

). The DB2 family safely supports up to of transient surge. Leakage Current ( IRcap I sub cap R

When evaluating a , engineers must review a standard group of technical metrics to guarantee circuit compatibility and physical device longevity. Breakover Voltage ( VBOcap V sub cap B cap O end-sub

(Breakover Voltage) - Typical: The average voltage, usually around 30V-32V. VBOcap V sub cap B cap O end-sub You will see it quickly "break over" and

3V —prevents DC offsets and asymmetric firing in AC waveforms, ensuring smooth operation in dimmers and motor drivers. Dynamic Breakover Voltage (

3V . Minimal asymmetry eliminates DC offsets in the circuit, protecting inductive loads from harmonic saturation. 3. Repetitive Peak On-State Current ( ITRMcap I sub cap T cap R cap M end-sub