SMDB3 KERSEMI | Alldatasheet
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Technical content
(DB3 and DB4) n V BO : 32V and 40V n LOW BREAKOVER CURRENT
FEATURES
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 fluorenscent lamp ballasts. A new surface mount version is now available in SOT-23 package, providing reduced space and compatibility with automatic pick and place equipment.
DESCRIPTION
Symbol Parameter Value Unit I TRM Repetitive peak on-state current t p=2 0µs F= 120 Hz SMDB3 1.00 A DB3 / DB4 2.00 Tstg Tj Storage temperature range Operating junction temperature range -4 0t o+1 2 5 °C ABSOLUTE MAXIMUM RATINGS (limiting values) SOT-23 (SMDB3)* Pin 1 and 3 must be shorted together Note: * SMDB3 indicated as Preliminary spec as product is still in development stage. www.kersemi.com
Symbol Parameter Test Conditions SMDB3 DB3 DB4 Unit V BO Breakover voltage * C = 22nF MIN. 28 28 35 V TYP. 32 32 40 MAX. 36 36 45 IV BO1 BO2 I Breakover voltage symmetry C = 22nF MAX. 3 V Δ V Dynamic breakover voltage * V BO and V F at 10mA MIN. 10 5 V V O Output voltage * see diagram 2 (R=20Ω ) MIN. 10 5 V I BO Breakover current * C = 22nF ** MAX. 10 50 µA tr Rise time * see diagram 3 MAX. 0.50 2 µs I R Leakage current * V R = 0.5 V BO max MAX. 1 10 µA I P Peak current * see diagram 2 (Gate) MIN. 1 0.30 A * Applicable to both forward and reverse directions. ** Connected in parallel to the device. ELECTRICAL CHARACTERISTICS (Tj = 25°C unless otherwise specified) Part Number V BO Package SMDB3 28 - 36 SOT-23 DB3 28 - 36 DO-35 DB4 35 - 45 DO-35 PRODUCT SELECTOR SM DB 3 Surface Mount Version Diac Series Breakover voltage 3: V typ = 32V 4: V typ = 40V BO BO
ORDERING INFORMATION
www.kersemi.com
+I F -IF 0,5 VBO VBO V VF Diagram 1:Voltage - current characteristic curve. D.U.T Vo C=0.1µF 220 V 50 Hz 500 kΩ10 kΩ R=20 Ω I P Rs=0 T410 Diagram 2:Test circuit. 90 % l p 10 % t r Diagram 3:Rise time measurement. Part Number Marking Weight Base Quantity Packing Mode SMDB3 DB3 0.01 g 3000 Tape & Reel DB3 DB3 (Blue Body Coat) 0.15 g 5000 Tape & Reel DB4 DB4 (Blue Body Coat) 0.15 g 5000 Tape & Reel OTHER INFORMATION www.kersemi.com
C(nF) tp(µs) Tj=25°C 10Ω 22Ω 68Ω 47Ω 33Ω Fig. 3:Time duration while current pulse is higher 50mA versus C and Rs (typical values). PACKAGE MECHANICAL DATA (in millimeters) DO-35 REF. DIMENSIONS Millimeters Inches Min. Max. Min. Max. A 3.05 4.50 0.120 0.177 B 1.53 2.00 0.060 0.079 C 28.00 1.102 D 0.458 0.558 0.018 0.022 CA BO O DO D C 25 50 75 100 125 0.80 0.85 0.90 0.95 1.00 1.05 1.10 Tj(°C) VBO [Tj] / VBO [Tj=25°C] SMDB3 DB3/DB4 Fig. 1:Relative variation of VBO versus junction temperature (typical values). 1 10 100 0.1 1.0 10.0 20.0 tp(µs) ITRM(A) SMDB3 DB3/DB4 F=120Hz Tj initial=25°C Fig. 2:Repetitive peak pulse current versus pulse duration (maximum values). www.kersemi.com
PACKAGE MECHANICAL DATA (in millimeters) SOT-23 B E S e A D c L H REF. DIMENSIONS Millimeters Inches Min. Max. Min. Max. A 0.89 1.4 0.035 0.055 A1 0 0.1 0 0.004 B 0.3 0.51 0.012 0.02 c 0.085 0.18 0.003 0.007 D 2.75 3.04 0.108 0.12 e 0.85 1.05 0.033 0.041 e1 1.7 2.1 0.067 0.083 E 1.2 1.6 0.047 0.063 H 2.1 2.75 0.083 0.108 L 0.6 typ. 0.024 typ. S 0.35 0.65 0.014 0.026 0.9 0.035 0.9 0.035 1.9 0.075 mm inch 2.35 0.92 1.1 0.043 1.1 0.043 1.45 0.037 0.9 0.035 FOOTPRINT www.kersemi.com