Dated : 08/11/2008
SEMTECH ELECTRONICS LTD.
(Subsidiary of Sino-Tech International Holdings Limited, a company
listed on the Hong Kong Stock Exchange, Stock Code: 724)
®
DB3, DB4, DC34
SILICON BIDIRECTIONAL DIACS
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. These diacs are intended for use in thyristor phase
control, circuits for lamp-dimming, universal-motor speed
controls, and heat controls.
Absolute Maximum Ratings (Ta = 25 OC)
Parameter
Symbol
Value
Unit
Power Dissipation (Ta = 65 OC)
Ptot
150
mW
Repetitive Peak On-state Current (tp = 20 µs, f = 100 Hz)
ITRM
2
A
Operating Junction and Storage Temperature Range
Tj,Tstg
- 40 to + 125
O
C
Characteristics at Ta = 25 OC
Parameter
Symbol
Min.
Max.
Unit
DB3
28
36
DC34
30
38
Breakover Voltage
DB4
V(BR)1 and V(BR)2
35
45
V
Breakover Currents
I(BR)1 and I(BR)2
-
200
µA
Breakover Voltage Symmetry
[V(BR)1]-[V(BR)2]
-
3.8
V
Dynamic Breakover Voltage
ΔI = [I
BR to IF = 10 mA]
|
ΔV ± |
5
-
V
Max. 3.9
Max. 1.9
Glass Case DO-35
Max. 0.5
Min. 27.5
Min. 27.5
XXX
Part No.
ST
"ST" Brand
Dimensions in mm
Black
Black
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