DB3T / DC34T / DB4T Silicon Bidirectional Trigger Diodes FEATURES These diacs are intended for use in thyristor phase control. circuits for lamp-dimming. universal-motor speed controls. and heat controls. 2 1 MECHANICAL DATA ▪Case: SOD-123 ▪Terminals: Solderable per MIL-STD-750, Method 2026 Top View Simplified outline SOD-123 and symbol Absolute Maximum Ratings (Ta = 25°C ) Symbol Value Unit Power Dissipation (T C = 100°C ) P tot 150 mW Repetitive Peak On-state Current (tp = 20 µs, f = 100 Hz) I TRM 2 A T j , T stg - 40 to + 125 °C Parameter Operating Junction and Storage Temperature Range Characteristics at T a = 25°C Min. Max. Unit 28 36 V 30 38 V 35 45 V [|+V BO |-|- V BO |] - 3 V | △V ± | 5 Output Voltage See diagram 2 VO 5 Breakover Current at C = 22 nF I BO Leakage Current at V B =0.5V BO max IB Rise Time See diagram 3 tr Symbol Parameter DB3T Breakover Voltage at C = 22 nF, see diagram 1 DC34T V BO DB4T Breakover Voltage Symmetry at C = 22 nF, see diagram 1 Dynamic Breakover Voltage at △I = [I BO to I F = 10 mA] www.yfwdiode.com - - V V 50 μA 10 μA 2 μs DB3T / DC34T / DB4T Diagram2: Test circuit for output voltage △ △ Diagram1: current-voltage characteristice 10KΩ + IF IO D.U.T R=20Ω 0.1μF (10mA) VO I BO IB -V 500KΩ 220V 50Hz +V 0 0.5V BO Diagram3 : Test circuit see Fig.2 . Adjust R for lp=0.5A △V VO V BO 90％ - IF 10％ tr Fig.2: Power dissipation versus ambient temperapture(maximum values) VBO[Tj] VBO[Tj=25°C ] 150 120 90 60 30 0 50 25 75 100 125 150 CASE TEMPERATURE,°C I TRM,PEAK PULSE CURRENT,A 10 1 0.1 0.01 100 1000 tp,PULSE DURATION,µs www.yfwdiode.com 1.08 1.06 1.04 1.02 1.00 25 T J (°C) 50 75 100 T j,JUNCTION TEMPERATURE, °C Fig.3: Power dissipation versus ambient temperapture(maximum values) 10 RELATIVE VARIATION OF V BO P,POWER DISSIPATION,mW Fig.1: Power dissipation versus ambient temperapture(maximum values) 10000 125 DB3T / DC34T / DB4T PACKAGE OUTLINE Plastic surface mounted package; 2 leads SOD-123 A D b E A1 C ∠ALL ROUND L1 E1 SOD-123 mechanical data A C D E E1 L1 b A1 max 1.3 0.22 1.8 2.8 3.9 0.45 0.7 0.2 min 0.9 0.09 1.5 2.5 3.6 0.25 0.5 max 51 8.7 71 110 154 18 28 min 35 3.5 59 98 142 10 20 UNIT ∠ mm 9° 8 mil The recommended mounting pad size Marking Type number 2.0 (79) 1.2 (47) 1.2 (47) 1.2 (47) Unit： mm (mil) www.yfwdiode.com Marking code DB3T DB3 DB34T DB34 DB4T DB4