DB3, DB4, DC34
Silicon Bidirectional Trigger Diodes
These diacs are intended for use in thyristor phase control,
circuits for lamp-dimming, universal-motor speed controls, and
heat controls.
Max. 0.5
Min. 27.5
Max. 1.9
Black
Part No.
Black
"ST" Brand
XXX
ST
Max. 3.9
Min. 27.5
Glass Case DO-35
Dimensions in mm
Absolute Maximum Ratings (T
a
= 25
O
C)
Parameter
Power Dissipation (T
a
= 65
O
C)
Repetitive Peak On-state Current (tp = 20 µs, f = 100 Hz)
Operating Junction and Storage Temperature Range
Symbol
P
tot
I
TRM
T
j
, T
stg
Value
150
2
- 40 to + 125
Unit
mW
A
O
C
Characteristics at T
a
= 25
O
C
Parameter
Breakover Voltage
at C = 22 nF, see diagram 1
DB3
DC34
DB4
Breakover Voltage Symmetry
at C = 22 nF, see diagram 1
Dynamic Breakover Voltage
at
ΔI
= [I
BO
to I
F
= 10 mA]
Output Voltage
See diagram 2
Breakover Current
at C = 22 nF
Leakage Current
at V
B
= 0.5 V
BO
max
Rise Time
See diagram 3
[|+V
BO
|-|-V
BO
|]
|
ΔV
± |
V
O
I
BO
I
B
t
r
V
BO
Symbol
Min.
28
30
35
-
5
5
-
-
-
Max.
36
38
45
3
-
-
50
10
2
V
V
V
µA
µA
µs
V
Unit