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© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/03/17
Surface Mount Fuses
NANO
2®
> 157T Fuse and Holder Combination
Materials
Body: Ceramic
Cap: For 0.375A ~ 5A – Silver plated Brass
Clip Plating: Matte Tin
Product
Marking
Body: Brand Logo, Current Rating, “T” for
Time-Lag
Clip Retention
Force applied at fuse center, perpendicular to
the long axis (@0.75 lbs. MIN)
Solderability
MIL-STD-202, Method 208 / IPC/ EIA /
JEDEC J-STD-002, Test Condition A
Humidity Test
MIL –STD-202, Method 103 @ 85ºC / 85%RH,
1000 hours
Resistance to
Solvents
MIL-STD-202, Method 215 (3 solvent types)
Product Characteristics
Operating
Temperature
-55ºC to 125ºC with proper derating
Thermal Shock
MIL-STD-202, Method 107,
Test Condition B
(5 cycles -65ºC to +125ºC)
Vibration
MIL-STD-202, Method 201
(10-55 Hz)
Moisture Resistance
MIL-STD-202, Method 106,
10 cycles
Salt Spray/
Atmosphere
MIL-STD-202, Method 101,
Test Condition B (48 hrs.), 5% NaCl in
De-ionized Water
Shock
MIL-STD-202, Method 213,
Test Condition I (100 G’s peak for 6
milliseconds)
Dimensions
6.10
[0.240]
1.45
[0.057]
2.69
[0.106]
2.69
[0.106]
3.7 ± 0.13
[0.146]
L
1 A
F
6.50 ± 0.20
[0.256]
T
3.90 ± 0.1
3
[0.154]
2.50 ± 0.2
[0.098]
3.70
[0.146]
3.40
[0.1
34]
"A"
"B"
0.10
7.26
[0.29]
3.00
[0.12]
2.46
[0.10]
2.40
[0.09]
Packaging
Packaging
Option
Packaging
Specification
Quantity
Quantity &
Packaging Code
Tape and Reel Surface Mount 1500 DRT
Part Numbering System
0157 005. D R T
SERIES
AMP CODE
QUANTITY CODE
PACKING OPTION
D = 1500 pcs
R = Tape and Reel
PCB Recommendation for Thermal Management
1. Minimum Copper Layer Thickness = 100um
2. Minimum Copper Trace Width = 10mm
Note:
Alternate methods of thermal management may be used. In such cases, under normal
operations, the maximum temperature of the fuse body should not exceed 80ºC in a 25ºC
ambient environment.
TIME-LAG FUSE
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and
test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications.
Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics.