LSDB3
DIAC
Features
1. V
BO
: 32V
2. Breakover voltage range: 28 to 36V
Applications
Functioning as a trigger diode with a fixed voltage
reference, the LSDB3 can be used in conjunction
with triacs for simplified gate control circuits or as
a starting element in fluorescent lamp ballasts.
Absolute Maximum Ratings
(Limiting values)
Parameter
Repetitive peak on-state current (tp=20μs F=120 Hz)
Operating junction temperature range
Storage temperature range
Symbol
I
TRM
T
j
T
stg
Value
2
-40 ~ +125
-40 ~ +125
Unit
A
℃
℃
Stresses exceeding maximum ratings may damage the device. Maximum ratings are stress ratings only. Functional operation above the
recommended operating conditions is not implied. Extended exposure to stresses above the recommended operating conditions may
affect device reliability.
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Rev. 3g, 1-Sep-2009
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LSDB3
Electrical Characteristics
(T
j
=25℃ unless otherwise specified)
Parameter
Breakover voltage*
Symbol
V
BO
C=22nF**
Test Conditions
MIN.
TYP.
MAX.
Breakover voltage symmetry
Dynamic breakover voltage*
Output voltage*
Breakover current*
Rise time*
Leakage current*
**Connected in parallel to the device.
Value
28
32
36
±3
5
5
50
2
10
Unit
V
|V
BO1
-V
BO2
|
△V
V
O
I
BO
tr
I
R
C=22nF**
V
BO
and V
F
at 10mA
see diagram 2(R=20Ω)
C=22nF**
see diagram 3
V
R
=0.5V
BO
max
MAX.
MIN.
MIN.
MAX.
MAX.
MAX.
V
V
V
μA
μs
μA
*Applicable to both forward and reverse directions.
Diagram 2. Test circuit
Diagram 1. Voltage – current characteristic curve
Diagram 3. Rise time measurement
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Rev. 3g, 1-Sep-2009
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LSDB3
Figure 1. Relative variation of VBO versus
junction temperature (typical values)
Figure 2. Repetitive peak pulse current versus
pulse duration (maximum values)
Figure 3. Time duration while current pulse is higher 50
mA versus C and Rs (typical values)
Excel Semiconductor
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FaxBack +86-512-67606917
Rev. 3g, 1-Sep-2009
3/4
LSDB3
Dimensions in mm
Cathode identification
1.7
Glass
0.3
3.5±0.2
Glass Case
Quadro MELF
Similar to JEDEC DO 213 AA
Excel Semiconductor
www.excel-semi.com
FaxBack +86-512-67606917
Rev. 3g, 1-Sep-2009
4/4
Φ1.5±0.1