Datasheet DB3, DB4, SMDB3 (STMicroelectronics)
| Manufacturer | STMicroelectronics |
| Description | DIAC |
| Pages / Page | 11 / 1 — DB3, DB4, SMDB3. Features. DO-35. Applications. SOT-23. Description. … |
| File Format / Size | PDF / 220 Kb |
| Document Language | English |
DB3, DB4, SMDB3. Features. DO-35. Applications. SOT-23. Description. Product status link. Product summary. Part number. VBO. SMDB3. DB3. DB4
Model Line for this Datasheet
Text Version of Document
DB3, DB4, SMDB3
Datasheet Diac
Features
• VBO : 32 V and 40 V • Low breakover current
DO-35
• Breakover voltage symmetry : 3V • ECOPACK®2 compliant
2 Applications 3 1
• Triggering device for Triac or SCR based motor / light dimmer
SOT-23
• 32 V trigger device for oscillator circuit Pin 1 and 3 must be shorted • Start up triggering in lighting ballast for CFL, TL or LED lamps together
Description
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.
Product status link
DB3 DB4 SMDB3
Product summary Part number VBO SMDB3
28 - 36 V
DB3
28 - 36 V
DB4
35 - 45 V
DS2125
-
Rev 3
-
December 2018
www.st.com For further information contact your local STMicroelectronics sales office. Document Outline 1 Characteristics 1.1 Characteristics curves 2 Package information 2.1 SOT23 package information 2.2 DO-35 package information 3 Ordering information Revision history
Datasheet Diac
Features
• VBO : 32 V and 40 V • Low breakover current
DO-35
• Breakover voltage symmetry : 3V • ECOPACK®2 compliant
2 Applications 3 1
• Triggering device for Triac or SCR based motor / light dimmer
SOT-23
• 32 V trigger device for oscillator circuit Pin 1 and 3 must be shorted • Start up triggering in lighting ballast for CFL, TL or LED lamps together
Description
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.
Product status link
DB3 DB4 SMDB3
Product summary Part number VBO SMDB3
28 - 36 V
DB3
28 - 36 V
DB4
35 - 45 V
DS2125
-
Rev 3
-
December 2018
www.st.com For further information contact your local STMicroelectronics sales office. Document Outline 1 Characteristics 1.1 Characteristics curves 2 Package information 2.1 SOT23 package information 2.2 DO-35 package information 3 Ordering information Revision history