DB3 / DB4
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
SIGNAL BIDIRECTIONAL
DIAC
DO-35(GLASS)
0.075(1.9)
MAX.
DIA.
0.102(2.6)
0.091(2.3)
DIA.
R-1
1.083(27.5)
MIN.
0.787(20.0)
MIN.
0.154(3.9)
MAX.
0.126(3.2)
0.106(2.7)
0.020(0.52)
MAX.
DIA.
1.083(27.5)
MIN.
0.025(0.65)
0.021(0.55)
DIA.
0.787(20.0)
MIN.
Dimensions in inches and (millimeters)
Absolute Ratings (Limiting Values)
Symbols
P
c
I
TRM
T
STG/
T
J
Parameters
Power Dissipation on Printed
Circuit(L=10mm)
Repetitive Peak on-state
Current
Value
DB3
T
A
=50℃
tp=10μs
F=100Hz
2.0
150
2.0
DB4
Units
mW
A
℃
Storage and Operating Junction Temperature
-40 to +125/-40 to 110
Electrical characteristics
Symbols
V
BO
|
+V
BO
|
-
|
-
V
BO
|
Parameters
Breakover Voltage (Note 2)
Breakover Voltage Symmetry
Dynamic Breakover Voltage (Note 1)
Output Voltage (Note 1)
Breakover Current (Note 1)
Rise Time (Note 1)
Leakage Current (Note 1)
Test Conditions
C=22nF(Note2)
See diagram 1
C=22nF(Note2)
See diagram 1
△I=(I
BO
to I
F
=10mA)
See diagram 1
See diagram 2
C=22nF(Note2)
See diagram 3
V
B
=0.5 V
BO
max
see diagram 1
Min
Typ
Max
Max
Min
Min
Max
Typ
Max
Value
DB3
28
32
36
±3
5
5
100
1.5
10
DB4
35
40
45
Units
V
V
V
V
μA
μS
μA
|±△V|
V
O
I
BO
tr
I
B
Notes:
(1) Electrical characteristics applicable in both forward and reverse directions
(2) Connected in parallel with the devices
DAESAN [ DAESAN ELECTRONICS CORP. ]
