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REV 2001
C3CC03
BI-DIRECTIONAL DIAC
DB3 & DB4 Series
Parameters
Symbol
*(DMM)DB3 *(DMM)DB4
Units
28
35
V min
Breakover Voltage
V(BR)1, V(BR)2
32
40
V typ
36
45
V max
Breakover Voltage Symmetry
|V(BR)1|-|V(BR)2|
3
3
V max
Dynamic Breakback Voltage
IV DI
5
5
V max
Breakover Current
I(BR)1 AND I(BR)2
50
50
mA max
Peak Pulse Current for
IP
2.0
2.0
A max
10ms, 120pps, TA4C
* DMMDB3 & DMMDB4 are DL-35 (mini-MELF).
DB3 & DB4 are DO-35.
DIMENSIONS
PART NUMBER EXAMPLE
CURVES
SPECIFICATIONS
DMM DB3 R
Packaging
R - Tape & Reel
A - Tape & Ammo
B - Bulk Packaging
Series
DM3 for 32 volts.
DM4 for 40 volts.
Surface mount.
Omit for thru hole.
Normalized VBO Change
vs Junction Temperature
+8
+6
+4
+2
0
-2
-4
-6
-8
-40 -20 0 +20 +40 +60 +80 +100 +120 +140
D28 32 35 40 50
D60
Test Circuit Waveforms
+V(80)
0
-V(80)
V+
t
V-
t
+IP
0
-IP
Repetitive Peak On-State
Current vs Pulse Duration
1.0
0.1
0.01
0.001
10 100 1000 10000
D60
Safe Operating Area
Pulse repetition rate = 120PPS
Tz= 40C
D28 32 35 40 50
V-I Characteristics
CURRENT
VOLTAGE
Breakover
Voltage
Breakover
Current
-Vbo
+Vbo
Ibo
RF
200W
1%
VC
120V
RMS
60Hz
0.1mF
D.U.T.
Adjust for one firing in half cycle
Test Circuit
MINI-MELF Drawing (mm)
Cathode Mark
1.350.05
0.30.1
3.30.1
0.30.1
DO-35 Glass Case Outline Drawing (mm)
Cathode
2.0 Max
4.2 Max
A
A
f0.52
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