Diac Db2 Datasheet Pdf 14

DB3

DIACs (Diode for Alternating Current) are specialized semiconductor switches that conduct current only after a specific "breakover" voltage is reached. While the and DB4 series are more common in modern electronics, the DB2 remains a foundational component in classic power control. The Role of the DB2 DIAC

Search for:

The DB2 is a bidirectional DIAC trigger diode commonly utilized with Triacs to simplify gate control in AC power circuits, featuring a typical breakover voltage of 28V to 36V. Available in SOT-23 or DO-35 packages, these components provide reliable triggering for applications like light dimmers, motor speed controllers, and thermal regulation. For technical specs, view the DB2 datasheet at Alldatasheet YIC Electronics Understanding The Basics of Bi-Directional Trigger Diodes Diac Db2 Datasheet Pdf 14

• Breakover voltage (VBO) – typically 28–42V for DB3, but check marking
• Breakover current (IBO) – usually ≤ 100 µA
• Peak pulse current – often ~2 A
• Power dissipation – e.g., 150 mW or 300 mW
• On-state voltage
• Dynamic characteristics (negative resistance region)
• Package – DO-35 (glass axial) or SMD (SOD-123, etc.)
• Typical applications:

  The DB2 is a silicon bi-directional trigger diode (DIAC) commonly used in power control circuits, such as light dimmers and motor speed controllers, to trigger triacs. DB3 DIACs (Diode for Alternating Current) are specialized

  Always verify the PDF’s digital signature or hash against values provided by Diac’s official channel. Breakover voltage (VBO) – typically 28–42V for DB3,

  • Bidirectional triggering – Conducts when voltage exceeds VBO in either polarity.
  • Negative resistance region – After breakdown, voltage drops (typically to ~5V) allowing trigger pulse.
  • High stability over temperature (low drift of VBO).
  • Low cost & simple design – No external trigger circuit needed.
  • Widely used with TRIACs (e.g., BT136, BT139).

  Q5: Why can’t I find this PDF on IBM’s website?

  A: Because Diac is an independent software vendor (ISV). IBM certifies their products but does not host their datasheets.

  Db2 14 (the latest continuous delivery version as of recent years) introduces refinements in locking scalability, especially for large partitions and high-concurrency workloads. The DIAC parameters in Db2 14 determine: