Littelfuse ST Series - Manual (Page 3)

123
Revised: June 4, 2010
POLYFUSE ® Resettable PTCs
© 2010 Littelfuse, Inc
POLYFUSE ® Resettable PTCs
ST Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/ST.html for current information.
S
T
S
eries
Axial Lead Battery Strap Type > ST Series
Environmental Specifications
Operating/Storage
Temperature
-40°C to +85°C
Maximum Device Surface
Temperature in Tripped State
125°C
Passive Aging
+70°C, 1000 hours
-/+5% typical resistance change
Humidity Aging
+85°C, 85% R.H., 7 days,
-/+5% typical resistance change
Vibration
MIL–STD–883C, Condition A,
No change
Physical Specifications
Lead Material
0.13mm nominal thickness,
quarter-hard Nickel
Insulating Material Polyester tape
Part Marking System
Dimensions
E B
D1 D2
C
A
SLIT
E B
D1 D2
C
A
NOMINAL
0.5 x 4.0
(.02”x .15”)
Figure 1 Figure 2
(Items with S at end of part number)
Part
Number
Fig.
A B C D1 D2 E
Inches mm Inches mm Inches mm Inches mm Inches mm Inches mm
Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Min. Min. Min. Min Max. Min. Max.
15ST120 1 0.78 0.87 19.9 22.1 0.19 0.20 4.9 5.2 0.02 0.04 0.6 1.0 0.22 5.5 0.22 5.5 0.01 0.22 3.9 4.1
15ST120S 2 0.78 0.87 19.9 22.1 0.19 0.20 4.9 5.2 0.02 0.04 0.6 1.0 0.22 5.5 0.22 5.5 0.01 0.22 3.9 4.1
15ST175 1 0.82 0.91 20.9 23.1 0.19 0.20 4.9 5.2 0.02 0.04 0.6 1.0 0.16 4.1 0.16 4.1 0.01 0.16 3.9 4.1
15ST175S 2 0.82 0.91 20.9 23.1 0.19 0.20 4.9 5.2 0.02 0.04 0.6 1.0 0.16 4.1 0.16 4.1 0.01 0.16 3.8 4.2
30ST200 1 0.84 0.92 21.3 23.4 0.40 0.43 10.2 11.0 0.02 0.04 0.5 1.1 0.20 5.0 0.20 5.0 0.19 0.21 4.8 5.4
30ST350 1 1.12 1.25 28.4 31.8 0.51 0.53 13.0 13.5 0.02 0.04 0.5 1.1 0.25 6.3 0.25 6.3 0.24 0.26 6.0 6.6
30ST420 1 1.20 1.28 30.6 32.4 0.51 0.54 12.9 13.6 0.02 0.04 0.5 1.1 0.20 5.0 0.20 5.0 0.24 0.26 6.0 6.7
Lot Number
(Contact Littelfuse
for additional
information)
ST
120
XX9U
Product Series
Current Rating
Littelfuse
Trademark
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