The DIAC DB2 (often categorized with similar models like the DB3 and DB4) is a bidirectional trigger diode designed for AC switching and control applications . It typically features a breakover voltage of approximately 32V and is widely used for triggering Triacs and SCRs in lighting and motor control circuits . Key Specifications & Features
Without that specific 14th page specification—the Breakover Voltage—modern light dimmers wouldn't exist. We would still be controlling lights with giant, hot, mechanical rheostats. diac db2 datasheet pdf 14 top
The DIAC was a strange creature. In a circuit, it behaved like a brick wall. It blocked electricity completely. It didn't care about the rising voltage. 10 volts? Nothing. 20 volts? Silence. 25 volts? Still a brick wall. The DIAC DB2 (often categorized with similar models
🛠️ Engineering Note While searching for "14" in relation to this datasheet, many engineers often cross-reference the pinout. If you are laying out a PCB, ensure you are referencing the DB2 pinout (usually a DO-35 or DO-41 glass package depending on the specific variant) and not confusing it with the DB3 (which has different breakover voltage specs). DB3 Diac Specifications and Datasheet | PDF |
AC Mains
|
LOAD
|
/ \ DIAC DB2
/ \ |
| |--------●----- G
| | |
----- TRIAC
| (e.g., BT136)
C R |
(R/C snubber) A2
| |
Neutral -----------
DB3 Diac Specifications and Datasheet | PDF | License - Scribd