DB3 DAESAN | Alldatasheet
Document overview
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Technical content
Features
The three layer, two terminal, axial lead, hermetically sealed diacs are designed specifically for triggering thyristors. They demonstrate low breakover current at breakover voltage as they withstand peak pulse current. The breakover symmetry is within three volts. These diacs are intended for use in thyristors phase control, circuits for lamp dimming, universal motor speed control, and heat control DEC's DB3/DB4 are bi-directional trigged diode designed to operate in conjunction with Triacs and SCR's Absolute Ratings (Limiting Values)
Electrical characteristics
Power Dissipation on Printed Circuit(L=10mm) mW150 Repetitive Peak on-state Current -40 to +125/-40 to 110 ¡É Pc ITRM Storage and Operating Junction TemperatureTSTG/TJ 2.0 A TA=50¡É tp=10¥ìs F=100Hz 2.0 Parameters DB3 DB4 Symbols Value Units Breakover Voltage (Note 2) V Breakover Voltage Symmetry ¡¾3 VBO |+VBO|- | - VBO| Dynamic Breakover Voltage (Note 1)|¡¾¡âV| V C=22nF(Note2) See diagram 1 3528 Parameters DB3 DB4 Min Typ Max 4032 4536 MaxC=22nF(Note2) See diagram 1 V Test Conditions ¡âI=(IBO to IF=10mA) See diagram 1 Min 5Output Voltage (Note 1)VO VSee diagram 2 Min 100Breakover Current (Note 1)IBO ¥ìAC=22nF(Note2) Max 1.5Rise Time (Note 1)tr ¥ìSSee diagram 3 Typ 10Leakage Current (Note 1)IB ¥ìAVB=0.5 VBO max see diagram 1 Max Notes: (1) Electrical characteristics applicable in both forward and reverse directions (2) Connected in parallel with the devices Dimensions in inches and (millimeters) DO-35(GLASS) 1.083(27.5) MIN. 1.083(27.5) MIN. 0.154(3.9) MAX. 0.020(0.52) MAX. DIA. 0.075(1.9) MAX. DIA. R-1 0.787(20.0) MIN. 0.787(20.0) MIN. 0.126(3.2) 0.106(2.7) 0.025(0.65) 0.021(0.55) DIA. 0.102(2.6) 0.091(2.3) DIA.
DIAGRAM 1 : Current-voltage characteristics DIAGRAM 2 : Test circuit for output voltage DIAGRAM 3 : Test circuit see diagram2 adjust R for Ip=0.5A FIG.1-Power dissipation versus ambient temperature (maximum values) FIG.2-Relative variation of VBO versus junction temperature (typical values) FIG.3-Peak pulse current versus pulse duration (maximum values) +IF -IF -V +V ¡âV 10mA
0.5 VBO
R=20W D.U.T Vo 0.1mF 90% 10% tr Ip 500 10 403020 13012011010090807060 140 160 120 100 P (mW) Tamb( ¡É) 0.01 0.1 10 100001000100 F=100Hz TJ initial=25¡É Tamb( ¡É) ITRM(A) tp(mS) VBO(TJ) VBO(TJ=25¡É) 25 50 12510075 1.00 1.08 1.06 1.04 1.02 TJ (¡É) RATINGS AND CHARACTERISTIC CURVES DB3/DB4