®
FEATURES
VBO: 32V
■
Low breakover current: 15µA max
■
Breakover voltage range: 30 to 34V
■
DESCRIPTION
DB3TG
DIAC
Functioning as a trigger diode with a fixed voltage
reference, the DB3TG can be used inconjunction
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with triacs for simplified gate control circuits or as
a starting element in fluorescent lamp ballasts.
ABSOLUTE MAXIMUM RATINGS (limiting values)
Symbol Parameter Value Unit
I
TRM
Repetitive peak on-state current
2A
tp=20µs F= 120 Hz
Tstg
Tj
Storage temperature range
Operating junction temperature range
-40to+125 °C
October 2001 - Ed: 2A
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DB3TG
ELECTRICAL CHARACTERISTICS (Tj = 25°C unless otherwise specified)
Symbol Parameter Test Conditions Value Unit
V
BO
IV
BO1-VBO2
∆ V Dynamic breakover
V
O
I
BO
tr Rise time * see diagram 3 MAX. 2 µs
I
R
* Applicabletoboth forward and reverse directions.
** Connected in parallel to the device.
ORDERING INFORMATION
Breakover voltage * C = 22nF ** MIN. 30 V
I Breakover voltage
symmetry
voltage *
Output voltage * see diagram 2
Breakover current * C = 22nF ** MAX. 15 µA
Leakage current * VR= 0.5 VBOmax MAX. 10 µA
DB 3 TG
TYP. 32
MAX. 34
C = 22nF ** MAX. ± 2 V
V
BO
10mA
(R=20Ω)
and VFat
MIN. 9 V
MIN. 5 V
Diac Series
Special V rangeBO
Breakover voltage
3:V typ = 32V
BO
OTHER INFORMATION
Part Number Marking Weight Base Quantity Packing Mode
DB3TG DB3TG (Blue Body Coat)
2/4
0.15 g 5000 Tape & Reel
DB3TG
Diagram 1: Voltage - current characteristic curve.
+I
F
10mA
I
BO
I
-V +V
R
0,5 V
BO
V
-I
V
F
F
V
BO
Diagram 2: Test circuit.
D.U.T
Rs=0
Vo
R=20 Ω
220V
50 Hz
500 kΩ10 kΩ
C=0.1µF
Diagram 3: Rise time measurement.
l
p
90 %
10 %
t
r
I
P
T410
Fig. 1: Relative variation of VBO versus junction
temperature (typical values)
VBO [Tj]
VBO [Tj = 25°C]
1.08
1.06
1.04
1.02
1.00
25 50 75 100 125
Tj (°C)
Fig. 2: Repetitive peak pulse current versus pulse
duration (maximum values).
ITRM(A)
20.0
10.0
1.0
tp(µs)
0.1
1 10 100
F=120Hz
Tj initial=25°C
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Fig. 3: Time duration while current pulse is higher
50mA versus C and Rs (typical values).
tp(µs)
40
35
30
25
Tj=25°C
33Ω
47Ω
Ω
68
20
15
10
5
0
10 20 50 100 200 500
0Ω
10Ω
22Ω
C(nF)
PACKAGE MECHANICAL DATA (in millimeters)
DO-35
DB3TG
REF. DIMENSIONS
CA
C
/
BO
Millimeters Inches
Min. Max. Min. Max.
A 3.05 4.50 0.120 0.177
B 1.53 2.00 0.060 0.079
O
/
O
/
D
Informationfurnished is believedto be accurateandreliable. However, STMicroelectronicsassumes no responsibilityforthe consequences of
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implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to
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D
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D 0.458 0.558 0.018 0.022
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