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

Product overview and Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
Product Details

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.

Specifications
Attribute Value
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
Maximum Operating Temperature +125 °C
Height 0.95mm
Minimum Operating Temperature -40 °C
140 In stock for delivery within 3 working days
Price Each (In a Pack of 20)
HK$ 4.131
(exc. GST)
units
Per unit
Per Pack*
20 - 80
HK$4.131
HK$82.62
100 - 180
HK$3.199
HK$63.98
200 - 380
HK$3.181
HK$63.62
400 - 980
HK$2.876
HK$57.52
1000 +
HK$2.572
HK$51.44
*price indicative
Packaging Options: