168

Revised: June 21, 2011 04:14 PM

©2011 Littelfuse, Inc

Specifications are subject to change without notice.

Please refer to http://www.littelfuse.com for current information.

0.8 Amp Sensitive SCRs

EC103xx & SxSx Series

Soldering Parameters

Reflow Condition

Pb – Free assembly

Pre Heat

-Temperature Min (T

150°C

-Temperature Max (T

200°C

-Time (min to max) (t

60 – 180 secs

Average ramp up rate (LiquidusTemp)

(T

5°C/second max

T

5°C/second max

Reflow

-Temperature (T

217°C

-Temperature (t

60 – 150 seconds

PeakTemperature (T

Time within 5°C of actual peak

Temperature (t

20 – 40 seconds

Ramp-down Rate

5°C/second max

Time 25°C to peakTemperature (T

8 minutes Max.

Do not exceed

280°C

Physical Specifications

Environmental Specifications

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/Pb-free Solder

Dipped

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.

Time

25

time to peak temperature

Preheat

Preheat

Ramp-up

Ramp-up

Ramp-down

Ramp-do