Technical Document
Specifications
Brand
STMicroelectronicsProduct Type
DIAC
Maximum Breakover Current IBO
0.01mA
Maximum Breakover Voltage VBO
36V
Repetitive Peak On-State Current
1A
Repetitive Peak Off-State Current
0.01mA
Mount Type
Surface
Package Type
SOT-23
Pin Count
3
Minimum Operating Temperature
125°C
Maximum Operating Temperature
-40°C
Width
1.3 mm
Height
0.95mm
Length
2.9mm
Standards/Approvals
No
Series
SMDB3
Automotive Standard
No
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
Stock information temporarily unavailable.
P.O.A.
Each (Supplied on a Reel) (ex VAT)
Production pack (Reel)
20
P.O.A.
Each (Supplied on a Reel) (ex VAT)
Stock information temporarily unavailable.
Production pack (Reel)
20
Technical Document
Specifications
Brand
STMicroelectronicsProduct Type
DIAC
Maximum Breakover Current IBO
0.01mA
Maximum Breakover Voltage VBO
36V
Repetitive Peak On-State Current
1A
Repetitive Peak Off-State Current
0.01mA
Mount Type
Surface
Package Type
SOT-23
Pin Count
3
Minimum Operating Temperature
125°C
Maximum Operating Temperature
-40°C
Width
1.3 mm
Height
0.95mm
Length
2.9mm
Standards/Approvals
No
Series
SMDB3
Automotive Standard
No
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


