DB3 Formosa MS DIAC Features 1. VBO: 32V 2. Breakover voltage range: 28 to 36V Applications Functioning as a trigger diode with a fixed voltage reference, the DB3 can be used in conjunction with triacs for simplified gate control circuits or as a starting element in fl uorescent lamp ballasts. Absolute Maximum Ratings (Limiting values) Parameter Repetitive peak on-state current (tp=20µ s F=120 Hz) Operating junction temperature range Storage temperature range Formosa MS Symbol Value Unit ITRM 2 A Tj -40 ~ +125 ? Tstg -40 ~ +125 ? 1 DB3 Formosa MS Electrical Characteristics (Tj=25? unless otherwise specified) Parameter Breakover voltage* Symbol VBO Test Conditions Value Unit MIN. 28 V TYP. 32 MAX. 36 C=22nF** MAX. ± 3 V C=22nF** Breakover voltage symmetry |V BO1-VBO2| Dynamic breakover voltage* ? V VBO and VF at 10mA MIN. 5 V Output voltage* VO see diagram 2(R=20O ) MIN. 5 V Breakover current* IBO C=22nF** MAX. 50 µ A Rise time* tr see diagram 3 MAX. 2 µ s Leakage current* IR VR =0.5V BO max MAX. 10 µ A *Applicable to both forward and reverse directions. **Connected in parallel to the device. Formosa MS 2 DB3 Formosa MS Formosa MS 3 DB3 Formosa MS Dimensions in mm Standard Glass Case JEDEC DO 35 Formosa MS 4