14 Top — Diac Db2 Datasheet Pdf

| Parameter | Value / Range | | --------------------- | ------------------------------------ | | | Bidirectional trigger diode (DIAC) | | Full name | Diode for Alternating Current (DB2) | | Breakover voltage (VBO) | Typically 28 V – 36 V (similar to DB3) | | Peak current | Up to 2 A (surge) | | Case style | DO-35 (glass axial lead) | | Operating temp. | –40 °C to +100 °C | | Typical application | AC dimmer, triac trigger, relaxation oscillator |

You can find the full PDF documentation at these major repositories:

To provide the critical electrical and physical specifications of the (bidirectional trigger diode), typically used in TRIAC phase control circuits. This report addresses the common request for a "datasheet PDF" and explains the "14 top" marking.

: As these links may change, always search for site:st.com DB2 DIAC datasheet or site:diotec.com DB2 .

: A critical parameter for AC applications is the symmetry of the breakover voltage. A good DIAC will have a VBO for the positive polarity that is very close to that for the negative polarity, typically within 3 to 4 volts. This ensures balanced triggering in both halves of the AC cycle. diac db2 datasheet pdf 14 top

DB3 Diac Specifications and Datasheet | PDF | License - Scribd

The DB2 works from junction temperature. Storage is wider (-55°C to +150°C). If your design runs hotter than 125°C, the breakover voltage will drift downward (negative temperature coefficient typical for DIACs).

The residual current flowing through the device when biased below its breakover threshold ( ). It is strictly limited to to avoid premature or unstable triggering. Operating Junction Temperature ( Tjcap T sub j

The is a bidirectional trigger diode (DIAC) typically used in phase-control circuits like lamp dimmers and motor speed controllers. While it is a distinct part number, it is often grouped in datasheets with the more common DB3 and DB4 series from manufacturers like STMicroelectronics or Littelfuse . Key Technical Specifications | Parameter | Value / Range | |

: While traditionally available in the axial DO-35 glass package , modern DB2 variants are frequently found in SOT-23 surface-mount packages for high-density PCB designs.

Before diving into the datasheet specifics, let’s establish a baseline. A DIAC is a bidirectional trigger diode. Unlike a standard diode, it conducts current only after its (VBO) is exceeded in either direction. Once triggered, it exhibits negative resistance, dropping the voltage across it and allowing a surge of current to fire a TRIAC gate.

If you are looking for specific, in-depth of the DB2 DIAC , I can help you find a particular manufacturer's datasheet if you can provide it. Share public link

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Since a manufacturer‑specific DB2 datasheet is not publicly available, we compiled the following specifications from and Diotec DB3/DB4 product pages , which are direct functional equivalents. These values are what you would find in a hypothetical DB2 datasheet PDF.

In the realm of power electronics and phase control circuits, few components are as critical yet understated as the (Diode for Alternating Current). Among the many DIACs on the market, the DB2 stands out as a workhorse for triggering TRIACs in light dimmers, motor speed controllers, and heat regulators.

This is the "ghost story" of the component. Once the DIAC breaks over at 32 volts, its internal resistance collapses. It actually lowers its voltage requirement to stay on. It enters a valley where it conducts easier than before. It is a one-way door; once you push the DIAC through that 32-volt wall, it tumbles down the other side, conducting freely until the current drops to almost nothing.