). This is crucial for satisfying high TRIAC gate turn-on demands. Breakover Voltage Symmetry (
Unlike a standard diode, the DB2 is a true full-wave device. It can be turned on in both forward and reverse directions, enabling it to generate a trigger pulse on both halves of the AC sine wave, which is the core requirement for controlling AC power.
(Breakover Voltage) - Minimum: The minimum voltage at which the DIAC starts conducting (typically 25V for many DB2 variations). VBOcap V sub cap B cap O end-sub diac db2 datasheet pdf 14 top
Adjusting the conduction angle of the TRIAC to regulate power to the motor.
Searching for the indicates you need a curated list of the most actionable data. When designing a phase-control circuit, you cannot overlook: It can be turned on in both forward
If you require a , that component does not exist in standard DB2 series. You may need a SIDAC (e.g., K2400 series) or a custom trigger diode. Please re-check the marking on your physical component – it may be DB3 with "14" as a lot code.
Understanding these 14 key specifications allows an engineer to confidently integrate a DB2 into a design or identify a suitable substitute, such as the readily available . Its simplicity, low cost, and effectiveness continue to make the DB2 DIAC an integral component in a vast array of electronic devices, from everyday light dimmers to specialized industrial equipment. Searching for the indicates you need a curated
Before analyzing the DB2 specifically, let us revisit the fundamentals. A DIAC is a two-terminal, bidirectional semiconductor device that conducts current only after its breakover voltage has been exceeded. Unlike a diode, which conducts in one direction, a DIAC conducts in both directions once the voltage across it reaches the breakover point (typically ±28 to ±36 volts for the DB2 series).
The "DB" prefix is a common naming convention for DIACs, with popular models including the DB2, DB3, DB4, and DB6. The key difference between these models lies in their breakover voltages.