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| LLDB-3 / LLDB-4 Trigger Diodes Features The glass passivated, 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 four volts with a typical breakover voltage of LLDB-3 32 volts, LLDB-4 40 volts. These diacs are intended for use in thyristor phase control, circuits for lamp-dimming, universalmotor speed controls, and heat controls. Good-Ark's LLDB-3 and LLDB-4 are bi-directional trigger diodes designed operate in conjunction with all of Good-Ark Electronics' Triacs and SCR's. Storage TemperatureTSTG Operating Temperature -40oC to +150oC -40oC to +100oC TJ Maximum Ratings at 50oC Ambient Peak Current (10usec duration, 120 cycle repetition rate) Ip +2 Amperes Max. Peak output voltage ep +3 volts Max. * Electrical Characteristics at 25oC Ambient Test Breakover voltage Breakover currents Breakover voltage symmetry Dynamic breakover voltage I=[IBR to IF=10mA] Thermal impedance junction to ambient LLDB-3 LLDB-4 Symbols V(BR)1 and V(BR)2 I(BR)1 and I(BR)2 [V(BR)1]-[V(BR)2] |V+| RJA Min. 28 35 5 Typ. 32 40 Max. 36 45 200 3.8 60 Units Volts uAmp Volts Volts o C/W 780 |
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