LLDB3 Datasheet, PDF (1/2 Pages) Formosa MS – DIAC

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Features
The three layer, two terminal, axial lead,
hermetically sealed diacs are designed
specifically for triggering thyristors. They
demonstrate low breakover current at
breakover voltage as they withstand peak
pulse current, The breakover symmetry is
within three volts (DB3,DB4). These diacs
are intended for use in thyrisitors phase
control , circuits for lamp dimming,universa
motor speed control ,and heat control.
LLDB3 / LLDB4
Bidirectional Diac
Glass Case MiniMELF
Dimensions in inches and (mm)
0.142 (3.6)
0.126 (3.2)
0.019 (0.48)
0.011 (0.28)
0.063 (1.6)
0.055 (1.4)
Mechanical Data
Case: MiniMELF Glass Case (SOD-80)
Polarity: Color band denotes cathode end
Mounting Position: Any
Weight: approx. 0.002 ounce, 0.05grams
Absolute Maximum Ratings Tamb =25 ^OC unless otherwise specified
Parameter
Repetitive peak on-state current
Power dissipation
Junction temperature
Test Condition
tp = 20 ms, f = 120Hz
l = 4 mm, TL 25 ^OC
Storage temperature
Symbol
ITRM
Ptot
Tj
Tstg
Value
2
150
125
- 40 ~ 125
Unit
A
mW
O_C
O_C
Electrical Characteristics Tamb =25 ^OC unless otherwise specified
Parameter
Test Condition
Part
Breakover voltage *
C = 22 nF **
LLDB3
LLDB4
Breakover voltage symmetry
Dynamic breakover voltage *
Output voltage *
Breakover current *
C = 22 nF **
VBO and VF @ 10 mA
See diagram 3 (R=20W)
C = 22 nF **
Rise time *
See diagram 2
Leakage current *
Peak current *
VR = 0.5 VBO max
See diagram 3 (Gate)
Symbol
VBO
VBO
VBO1-VBO2
DV^—
V^— O
—
IBO
tr
IR
IP
* Applicable to both forward and reverse directions. ** Connected in parallel to the device.
Min
28
35
5
5
0.30
Typ.
32
40
Max
36
45
3
100
2
10
Unit
V
V
V
V
V
mA
ms
mA
A
Diagram 1:
Diagram 2:
Voltage -current characteristic curve Rise time measurement
+IF
10 mA
Ip
90 %
IBO
-V
IB
+V
0.5 VBO
DV
VF
VBO
10 %
tr
Diagram 3:
Test circuit
500 kW D.U.T. Rs=0
10 kW
220V
Ip
50Hz
0.1 mF
Vo
R=20W T410
- IF
OLITECH ELECTRONICS CO. LTD.
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