Revised: 06/27/18
Specifications are subject to change without notice.
©2018 Littelfuse, Inc
Thyristors
12 Amp High Junction Temperature SCRs
SJxx12xx Series
Soldering Parameters
Reflow Condition Pb – Free assembly
Pre Heat
- Temperature Min (T
s(min)
) 150°C
- Temperature Max (T
s(max)
) 200°C
- Time (min to max) (t
s
) 60 – 180 secs
Average ramp up rate (Liquidus Temp)
(T
L
) to peak
5°C/second max
T
S(max)
to T
L
- Ramp-up Rate 5°C/second max
Reflow
- Temperature (T
L
) (Liquidus) 217°C
- Time (t
L
) 60 – 150 seconds
Peak Temperature (T
P
) 260
+0/-5
°C
Time within 5°C of actual peak
Temperature (t
p
)
20 – 40 seconds
Ramp-down Rate 5°C/second max
Time 25°C to peak Temperature (T
P
) 8 minutes Max.
Do not exceed 280°C
Time
Temperature
T
P
T
L
T
S(max)
T
S(min)
25
t
P
t
L
t
S
time to peak temperature
Preheat
r
h
Ramp-upRamp-up
Ramp-down
am
-
Physical Specifications Environmental Specifications
Test
Specifications and Conditions
AC Blocking
MIL-STD-750, M-1040, Cond A Applied
Peak AC voltage @ 150°C for 1008 hours
Temperature Cycling
MIL-STD-750, M-1051,
100 cycles; -55°C to +150°C;
15-min dwell-time
Temperature/
Humidity
EIA / JEDEC, JESD22-A101
1008 hours; 160V - 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
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
Moisture Sensitivity
Level
Level 1, JEDEC-J-STD-020D
Terminal Finish 100% Matte Tin-plated
Body Material
UL recognized compound meeting
flammability rating V-0.
Lead Material Copper Alloy
Design Considerations
Careful selection of the correct component 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 component 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.
12 Amps High Junction Temperature SCRs
SJxx12xx Series
