STMicroelectronics DB4 DIAC 45 V 2 A 2-Pin DO-35

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SGD5.725

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SGD6.25

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In Stock
  • 550 unit(s) ready to ship from another location
  • Plus 2,275 unit(s) shipping from 03 March 2026
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25 - 50SGD0.229SGD5.73
75 - 100SGD0.22SGD5.50
125 +SGD0.207SGD5.18

*price indicative

Packaging Options:
RS Stock No.:
829-0692
Mfr. Part No.:
DB4
Manufacturer:
STMicroelectronics
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Brand

STMicroelectronics

Product Type

DIAC

Maximum Breakover Current IBO

10μA

Maximum Breakover Voltage VBO

45V

Repetitive Peak On-State Current

2A

Repetitive Peak Off-State Current

0.01mA

Mount Type

Through Hole

Package Type

DO-35

Minimum Operating Temperature

-40°C

Pin Count

2

Maximum Operating Temperature

125°C

Height

2.75mm

Width

2 mm

Length

4.5mm

Standards/Approvals

No

Automotive Standard

No

DB3, DB4, SMDB3 DIAC Diodes


ST Microelectronics Functioning as a trigger diode with a fixed voltage reference, the DB3/DB4 series can be used in conjunction with triacs for simplified gate control circuits or as a starting element in fluorescent lamp ballasts.

The surface mount SOT23-3L package allows compact, SMD based designs for automated manufacturing.

Features and Benefits


  • VBO: 32 V and 40 V

  • Low breakover current

  • Breakover voltage symmetry: 3V

  • ECOPACK®2 compliant

    • Applications


  • Triggering device for Triac or SCR based motor/ light dimmer

  • 32 V trigger device for oscillator circuit

  • Start-up triggering in lighting ballast for CFL, TL or LED lamps

    • The DIAC, or 'diode for alternating current', is a diode that conducts current only after its breakover voltage has been reached momentarily.

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