In the early days of AC power control, engineers had a problem. They had —devices that could turn on massive amounts of power to run motors and dim lights—but they couldn't figure out how to wake them up reliably.
The remains a fundamental component for AC switching and phase control. By focusing on the "diac db2 datasheet pdf 14 top" specifications, you now have a complete reference—from breakover voltage to thermal resistance—to confidently integrate this device into your next dimmer, motor controller, or power regulator.
Simple structure allows for low-cost, high-volume production.
Understanding a DIAC requires analyzing its symmetric, bidirectional turn-on behavior. When the voltage across the device reaches the breakover threshold, it drops into a low-voltage "on-state," sending a sharp current pulse to trigger a thyristor or TRIAC. Breakover Voltage ( VBOcap V sub cap B cap O end-sub diac db2 datasheet pdf 14 top
Having these 14 parameters in a single PDF datasheet gives an engineer all the information needed to design with the DB2.
+125∘Cpositive 125 raised to the composed with power cap C . Approximately 150 mW at Rise Time ( ): Typically 1.5 \mu s to 2 \mu s . Physical & Mechanical Details Datasheet - DB3TG - Diac in DO-35 with tight VBO
range, which is critical for reducing harmonic distortion in AC power control. In the early days of AC power control,
The is a bidirectional trigger diode (DIAC) typically used to trigger TRIACs in AC control circuits, such as lamp dimmers and motor speed controls. While the exact "DB2" part number is less common than its successors, it is functionally equivalent to or replaced by more modern standard parts like the DB3 or SMDB3 . Technical Specifications (Reference: DB3 Series)
(Repetitive Peak On-State Current): Maximum pulsed current the DIAC can handle repeatedly, usually 2.0A ( , F = 120Hz). VOcap V sub cap O
However, I cannot directly retrieve or attach PDF files. But I can provide you with a based on the standard DB3 / DB4 / DB2 DIAC family specifications. If the "14" refers to a voltage variant (e.g., 14V breakover), that is unusual because most DIACs are ~28-42V. I will clarify this. By focusing on the "diac db2 datasheet pdf
Designed for low-power trigger circuits, typically handling low power loss efficiently ( Storage Temperature Range ( Tstgcap T sub s t g end-sub ): High robust range (typically -40∘Cnegative 40 raised to the composed with power cap C
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.