31
Revised: 09/23/13
©2013 Littelfuse, Inc
Specifications are subject to change without notice.
Teccor
®
brand Thyristors
EV Series 0.8 Amp Sensitive Triacs
LX8 Series
Physical Specifications
Dimensions — TO-92 (E Package)
A
G
H
I
F
E
J
D
F
C
B
T MEASURING POINT
C
SEATING
PLANE
GATE
MT2
MT1
Dimensions
Inches Millimeters
Min Max Min Max
A 0.175 0.205 4.450 5.200
B 0.170 0.210 4.320 5.330
C 0.500 12.70
D 0.135 3.430
E 0.125 0.165 3.180 4.190
F 0.080 0.105 2.040 2.660
G 0.016 0.021 0.407 0.533
H 0.045 0.055 1.150 1.390
I 0.095 0.105 2.420 2.660
J 0.015 0.020 0.380 0.500
Reliability/Environmental Tests
Test
Specifications and Conditions
AC Blocking
MIL-STD-750, M-1040, Cond A Applied
Peak AC voltage @ 110°C for 1008 hours
Temperature Cycling
MIL-STD-750, M-1051,
100 cycles; -40°C to +150°C; 15-min
dwell-time
Temperature/
Humidity
EIA / JEDEC, JESD22-A101
1008 hours; 320V - DC: 85°C; 85%
rel humidity
High Temp Storage
MIL-STD-750, M-1031,
1008 hours; 150°C
Low-Temp Storage 1008 hours; -40°C
Thermal Shock
MIL-STD-750, M-1056
10 cycles; 0°C to 100°C; 5-min dwell-
time at each temperature; 10 sec (max)
transfer time between temperature
Autoclave
EIA / JEDEC, JESD22-A102
168 hours (121°C at 2 ATMs) and
100% R/H
Resistance to
Solder Heat
MIL-STD-750 Method 2031
Solderability ANSI/J-STD-002, category 3, Test A
Lead Bend
MIL-STD-750, M-2036 Cond E
Terminal Finish 100% Matte Tin-plated.
Body Material
UL recognized epoxy meeting flammability
classification 94V-0.
Lead Material Copper Alloy
Design Considerations
Careful selection of the correct device for the application’s
operating parameters and environment will go a long way
toward extending the operating life of the Thyristor. Good
design practice should limit the maximum continuous
current through the main terminals to 75% of the device
rating. Other ways to ensure long life for a power discrete
semiconductor are proper heat sinking and selection of
voltage ratings for worst case conditions. Overheating,
overvoltage (including dv/dt), and surge currents are
the main killers of semiconductors. Correct mounting,
soldering, and forming of the leads also help protect
against component damage.
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