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© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/03/17
Surface Mount Fuses
NANO
2®
> Very Fast Acting Fuse > 456 Series
Operating Temperature -55
O
C to 125
O
C with proper derating
Thermal Shock
MIL-STD-202, Method 107,
Test Condition B
(5 cycles -65
O
C to 125
O
C)
Vibration
MIL-STD-202, Method 201
(10-55 Hz)
Moisture Sensitivity
Level
J-STD-020, Level 1
Moisture Resistance
MIL-STD-202 Method 106,
High Humidity (90-98%RH),
Heat (65
O
C)
Salt Spray
MIL-STD-202, Method 101,
Test Condition B
Mechanical Shock
MIL-STD-202, Method 213,
Test Condition I (100 G’s peak for 6
milliseconds)
Product Characteristics
Dimensions
Part Numbering System
Packaging
Rating
Packaging
Option
Packaging
Specification
Quantity
Quantity &
Packaging
Code
20A,
25A, 30A
24 mm Tape
and Reel
EIA RS-481-2 2500 ER
40A
24 mm Tape
and Reel
EIA RS-481-
2 (IEC 286,
part 3)
1500 DR
Materials
Body: Ceramic
Cap: Silver Plated Brass
Product Marking Body: Brand Logo, Current Rating
Insulation Resistance
MIL-STD-202, method 302, Test
Condition A (10,000 ohms, Minimum)
Solderability MIL-STD-202, Method 208
Resistance to
Soldering Heat
MIL-STD-202, Method 210,
Test Condition B (10 sec at 260
O
C)
PCB
Recommendation for
Thermal Management
Min. copper layer thickness = 100µm
Min. copper trace width =20A, 30
10mm (20A, 30A) / 15mm (40A)
Alternate methods of thermal man-
agement may be used. In such cases,
under normal operations, the maxi-
mum temperature of the fuse body
should not exceed 90
O
C in a 25
O
C
environment.
10.08
(.397”)
3.05
(.12”)
12.50
(.492)
4.445
(.175”)
4.445
(.175”)
Recommended Pad Layout
Recommended Pad Layout
2.173
(.086”)
2.79
(.110”)
0.30
(.012”)
3.79
(.149”)
5.72
(.225”)
13.3
(.524”)
5.65
(.222”)
3.05
[.12”]
1.70 typ
(0.067”)
3.25
(.128”)
3.43
(.135”)
12.60
(.496”)
6.10
(.240”)
20 A
20A, 25A, 30A:
40A:
F
40 A
F
0456 020. E R
SERIES
AMP Code
QUANTITY Code
PACKAGING Code
Refer to Electrical
characteristics table
E = 2500 pcs
D = 1500 pcs
R = Tape and Reel
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.