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

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Subtotal (1 pack of 25 units)*

$6.55

(exc. GST)

$7.20

(inc. GST)

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  • Plus 300 unit(s) shipping from 01 June 2026
  • Plus 525 unit(s) shipping from 01 June 2026
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Units
Per unit
Per Pack*
25 - 1225$0.262$6.55
1250 - 2475$0.257$6.43
2500 +$0.25$6.25

*price indicative

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

STMicroelectronics

Maximum Breakover Current IBO

10μA

Product Type

DIAC

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

Length

4.5mm

Standards/Approvals

No

Height

2.75mm

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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