BI-DIRECTIONAL DIAC
DB3 & DB4 Series
SPECIFICATIONS
Parameters
Symbol
*(DMM)DB3 *(DMM)DB4 Units
28
32
36
3
35
40
45
3
V min
V typ
Breakover Voltage
V(BR)1, V(BR)2
V max
V max
V max
mA max
A max
Breakover Voltage Symmetry
Dynamic Breakback Voltage
Breakover Current
|V(BR)1|-|V(BR)2|
I±V DI
I(BR)1 AND I(BR)2
IP
5
5
50
2.0
50
2.0
Peak Pulse Current for
10ms, 120pps, TA£4°C
* DMMDB3 & DMMDB4 are DL-35 (mini-MELF).
DB3 & DB4 are DO-35.
DIMENSIONS
MINI-MELF Drawing (mm)
Cathode Mark
DO-35 Glass Case Outline Drawing (mm)
2.0 Max
Cathode
f0.52
1.35±0.05
A
A
0.3±0.1
4.2 Max
0.3±0.1
3.3±0.1
CURVES
V-I Characteristics
Repetitive Peak On-State
Current vs Pulse Duration
CURRENT
Test Circuit
Breakover
Voltage
1.0
RF
Pulse repetition rate = 120PPS
Tz= 40°C
D.U.T.
VC
120V
RMS
60Hz
D28 32 35 40 50
200W
1%
0.1
D60
Safe Operating Area
0.1mF
-Vbo
Adjust for one firing in half cycle
VOLTAGE
0.01
+Vbo
Breakover
Current
0.001
10
100
1000
10000
Ibo
PART NUMBER EXAMPLE
Normalized VBO Change
vs Junction Temperature
Test Circuit Waveforms
DMM DB3 R
+8
+6
+4
+2
0
Packaging
D28 32 35 40 50
+V(80)
V+
t
R - Tape & Reel
A -Tape &Ammo
B - Bulk Packaging
Series
0
D60
V-
-V(80)
DM3 for 32 volts.
DM4 for 40 volts.
Surface mount.
Omit for thru hole.
-2
-4
-6
-8
+IP
t
0
-IP
-40 -20 0 +20 +40 +60 +80 +100 +120 +140
C3CC03
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REV 2001
RFE [ RFE INTERNATIONAL ]