This is the non-repetitive, one-off surge current the DIAC can withstand. While general DIACs can be rated for higher, the DB series is commonly rated for a , making it suitable for low to medium-power applications like dimmers and motor controllers.
: A DIAC can form the core of a simple relaxation oscillator when combined with a single resistor and capacitor. This circuit produces a sawtooth or pulse waveform, useful in timing circuits and signal generation.
The DB2 DIAC is a reliable, cost-effective, and essential component for managing AC power. Its low breakover voltage and symmetrical performance make it a preferred choice for precision power control circuits. Always consult a comprehensive from a reliable manufacturer to ensure it meets your specific project needs regarding voltage, current, and temperature constraints. diac db2 datasheet pdf 14 top
If the search returns zero results for DB2, use "DB3" as STMicroelectronics merged DB2 into the DB3 family. The technical datasheet PDF is identical.
The layout ensures that the device maintains near-identical electrical traits regardless of the applied voltage polarity. Unlike a standard breakdown diode, a DIAC exhibits a . When the voltage across its terminals reaches a specific threshold (the breakover voltage, VBOcap V sub cap B cap O end-sub This is the non-repetitive, one-off surge current the
: Do you have a specific DB2 circuit question? Or have you encountered a mismatch between your DB2 datasheet and the actual component? Leave a comment below (or contact your distributor’s FAE) to resolve VBO symmetry issues or thermal drift.
) : Max at half the breakover voltage, ensuring zero accidental triggers when the circuit is idle. Mechanical Packages and Form Factors This circuit produces a sawtooth or pulse waveform,
While specific manufacturers (like STMicroelectronics) may have slight variations, the standard characteristics for DIACs like the DB2/DB3 include: VBOcap V sub cap B cap O end-sub (Breakover Voltage): Typically around VBOcap V sub cap B cap O end-sub
The is a bidirectional trigger diode, often called a "Diode for Alternating Current." It functions as a voltage-sensitive switch that remains non-conductive until the voltage across its terminals reaches a specific breakover voltage ( VBOcap V sub cap B cap O end-sub ) .
+125∘Cpositive 125 raised to the composed with power cap C
This is the very small current that flows just at the point of breakdown, right before full conduction. It is used to trigger the device. The maximum IBO is typically . This low value makes the DIAC highly sensitive.
