BI-DIRECTIONAL DIAC
DB3 & DB4 Series
SPECIFICATIONS
Parameters
Breakover Voltage
Symbol
V(BR)1, V(BR)2
*(DMM)DB3 *(DMM)DB4 Units
28
35
V min
32
40
V typ
36
45
V max
3
3
V max
5
5
V max
50
50
mA
max
2.0
2.0
A max
Breakover Voltage Symmetry
|V(BR)1|-|V(BR)2|
Dynamic Breakback Voltage
I±V
DI
Breakover Current
I(BR)1 AND I(BR)2
Peak Pulse Current for
IP
10ms, 120pps, TA£4°C
* DMMDB3 & DMMDB4 are DL-35 (mini-MELF).
DB3 & DB4 are DO-35.
DIMENSIONS
DO-35 Glass Case Outline Drawing (mm)
2.0 Max
Cathode
f0.52
MINI-MELF Drawing (mm)
Cathode Mark
1.35±0.05
A
4.2 Max
A
0.3±0.1
3.3±0.1
0.3±0.1
CURVES
V-I Characteristics
CURRENT
Breakover
Voltage
1.0
Pulse repetition rate = 120PPS
Tz= 40°C
D28 32 35 40 50
0.1
D60
Safe Operating Area
Repetitive Peak On-State
Current vs Pulse Duration
VC
120V
RMS
60Hz
Test Circuit
RF
D.U.T.
200W
1%
0.1mF
Adjust for one firing in half cycle
-Vbo
Breakover
Current
VOLTAGE
+Vbo
0.01
0.001
10
100
1000
10000
Ibo
+8
+6
+4
+2
0
-2
-4
-6
-8
-40
Normalized VBO Change
vs Junction Temperature
D28 32 35 40 50
PART NUMBER EXAMPLE
Test Circuit Waveforms
+V(80)
0
V+
t
V-
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.
D60
-V(80)
+IP
0
-IP
-20 0
+20 +40 +60 +80 +100 +120 +140
t
RFE International
• Tel:(949) 833-1988 • Fax:(949) 833-1788 • E-Mail Sales@rfeinc.com
C3CC03
REV 2001
RFE [ RFE INTERNATIONAL ]
