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, universal-
motor 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 TemperatureT
STG
Operating Temperature
-40
o
C to +150
o
C
-40
o
C to +100
o
C
T
J
Maximum Ratings at 50
o
C Ambient
Peak Current (10usec duration, 120 cycle repetition rate)
Ip +2 Amperes Max.
Peak output voltage e
p
+3 volts Max. *
Electrical Characteristics
at 25
o
C Ambient
Test
Breakover voltage
Breakover currents
Breakover voltage symmetry
Dynamic breakover voltage
∆
I=[I
BR
to I
F
=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+|
R
θ
JA
Min.
28
35
-
-
5
-
Typ.
32
40
-
-
-
-
Max.
36
45
200
3.8
-
60
Units
Volts
u
Amp
Volts
Volts
o
C/W
780
模拟电子
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