6. Environmental Applications

100

80

60

40

20

-60

-40

-20

0

40

60

80

100

140

70

20

AmbientTemperature

(∞C)

0

-55

120

125

40

30

0

-10

-50

-25

0

50

75

100

125

AmbientTemperature

(∞C)

-40

-75

3600ppm/

∞C

20

10

-20

-30

3000ppm/

∞C

2000ppm/

∞C

1000ppm/

∞C

25

6.1 Derating Curve

6.2 Temperature Characteristics

S p e c i f i c a t i o n s g i v e n h e r e i n m a y b e c h a n g e d a t a n y t i m e w i t h o u t p r i o r n o t i c e . P l e a s e c o n f i r m t e c h n i c a l s p e c i f i c a t i o n s b e f o r e y o u o r d e r a n d / o r u s e .

PAGE 3 OF 4

SS-250 R4

KOA SPEER ELECTRONICS, INC.

Parameter

Requirement ∆ R

Test Method

Resistance

Within regulated tolerance

25°C

T.C.R.

Within specified T.C.R.

+25°C/+75°C

Short Time Overload

Rated voltage x 2.5 or max. working voltage x 2

±(1.0% + 0.1

Ω): 1J, 2A, 2B for 5 seconds, whichever is less

Resistance to Solder Heat

260°C ± 5°C, 10 seconds ± 1 second

Solderability

95% coverage minimum

235°C ± 5°C, 2 seconds ± 0.5 seconds

Bending Test

Width of holding point 90mm, bending 3mm, 1 time

Temperature Cycling

-55°C (30 minutes), +125°C (30 minutes), 100 cycles

Moisture Resistance

40°C ± 2°C, 90 - 95% RH, 1000 hours, rated voltage load

Load Life

70°C ± 3°C, 1000 hours, rated voltage load

8. Characteristics

±(1.0% + 0.1

Ω): 1J, 2A, 2B

±(3.0% + 0.1

Ω): 1J, 2A, 2B

7. Approximate Expression for Resistance-Temperature Characteristics

3000

3300

3600

0.926

0.00294

0.918

0.910

T.C.R.

(x10

0.00325

0.00359

(Values are not guaranteed but typical)

T: Ambient temperature (°C)