STMicroelectronics SMDB3 DIAC 36V, 1A, 3-Pin SOT-23

RS Stock No.:: 687-0965
Mfr. Part No.:: SMDB3
Manufacturer:: STMicroelectronics

STMicroelectronics SMDB3 DIAC 36V, 1A, 3-Pin SOT-23

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Bulk discount available

Subtotal (1 pack of 20 units)*

PHP356.72

(exc. VAT)

PHP399.52

(inc. VAT)

FREE delivery for orders over ₱3,000.00

In Stock

20 unit(s) ready to ship from another location
Plus 5,260 unit(s) shipping from January 12, 2026

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Units	Per Unit	Per Pack*
20 - 20	PHP17.836	PHP356.72
40 - 80	PHP17.301	PHP346.02
100 - 180	PHP16.782	PHP335.64
200 - 380	PHP16.278	PHP325.56
400 +	PHP15.789	PHP315.78

*price indicative

RS Stock No.:: 687-0965
Mfr. Part No.:: SMDB3
Manufacturer:: STMicroelectronics

Specifications

Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	STMicroelectronics
	Maximum Breakover Current	0.01mA
	Maximum Breakover Voltage	36V
	Repetitive Peak On-State Current	1A
	Repetitive Peak Off-State Current	0.01mA
	Mounting Type	Surface Mount
	Package Type	SOT-23
	Pin Count	3
	Dimensions	2.9 x 1.3 x 0.95mm
	Length	2.9mm
	Width	1.3mm
	Height	0.95mm
	Maximum Operating Temperature	+125 °C
	Minimum Operating Temperature	-40 °C

	Select all
	Brand STMicroelectronics
	Maximum Breakover Current 0.01mA
	Maximum Breakover Voltage 36V
	Repetitive Peak On-State Current 1A
	Repetitive Peak Off-State Current 0.01mA
	Mounting Type Surface Mount
	Package Type SOT-23
	Pin Count 3
	Dimensions 2.9 x 1.3 x 0.95mm
	Length 2.9mm
	Width 1.3mm
	Height 0.95mm
	Maximum Operating Temperature +125 °C
	Minimum Operating Temperature -40 °C

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

For these non-cancellable (NC), and non-returnable (NR) products, Terms and Conditions apply.

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