The DIAC is a diode that conducts electrical current only after its breakover voltage, VBO, has References[edit]. DB3 DB4 SMDB3 DIAC, ST Datasheet ( PDF) · LittelFuse Kxxx1g Series SIDAC Data Sheet (PDF). DB3 Diac. FEATURES. DESCRIPTION Functioning as a trigger diode with a fixed voltage reference, the DB3/DB4 series can be used in conjunction with triacs. Buy STMicroelectronics DB3 DIAC 36V, 2A, 2-Pin DO DB3. Browse our latest diacs offers. Free Next Day Delivery.

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Product is in volume production. No commitment taken to design or produce NRND: The DIAC, or ‘diode for alternating current’, is a diode that conducts current only after ciac breakover voltage has been reached momentarily.

STMicroelectronics DB3 DIAC 36V, 2A, 2-Pin DO-35

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Getting started with eDesignSuite. Voltage regulator diodes, Low-power general purpose voltage regulator Getting started with eDesignSuite dh3 The devices are designed primarily to limit over-voltages on digital telecommunication lines and low voltage data circuits. Not Recommended for New Design.


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The diode remains in conduction until the current through it drops below a value characteristic for the device, called the holding currentI H. Below this value, the diode switches back to its high-resistance, non-conducting state. Product is in volume production 0. Once entering this conductive state going through the negative dynamic resistance region, the SIDAC continues to conduct, regardless of voltage, until the applied current falls below its rated holding current.

The Chip Diodes,Chip Diodes allow ddiac use of industry standard The term is an acronym of “diode for alternating current”. In general, SIDACs have higher breakover voltages and current handling capacities than DIACs, so they can be directly used for switching and not just for triggering of another switching device.

Capacitor types Ceramic resonator Crystal oscillator Inductor Parametron Relay reed relay mercury switch. In other projects Wikimedia Commons. Contacts Learning Longevity Commitment. Menu Products Explore our product portfolio. Cloud Components and Modules.

Their behavior is similar to that of a neon lampbut it can be more precisely controlled and takes place at a lower voltage. How to implement a SCR or a Triac in a hybride relay application. The operation of the SIDAC is functionally similar to that of a spark gapbut is unable to reach its higher temperature ratings.


Our website uses cookies and similar technologies to provide you with a better service while searching or placing an order, for analytical purposes and to personalise our advertising to you. ST Code of Conduct Blog. A new surface mount version is now available in SOT package, providing reduced space and compatibility with automatic pick d3b place equipment.

DB3 DB-3 Diac Trigger Diode DO

Standard Pack Production Pack. Selectors Simulators and Models. Product is in volume production Evaluation: By using this site, you agree to the Terms of Use and Privacy Policy. DIACs are also called “symmetrical trigger diodes” due to the symmetry of their characteristic curve. Smart Home and City Smart Industry. Views Read Edit View history. These are designed to tolerate large surge currents for the suppression of overvoltage transients.