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© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/03/17
Surface Mount Fuses
NANO
2®
> Slo-Blo
®
Fuse > 452/454 Series
Materials
Body: Ceramic
Terminations:
Gold-plated Caps /
Sn-dipped Silver Plated
Caps ( 452 Series)
Silver-plated Caps (454 Series)
Product Marking Brand, Ampere Rating
Operating
Temperature
-55°C to 125°C
Moisture
Sensitivity Level
Level 1, J-STD-020
Solderability MIL-STD-202, Method 208
Insulation
Resistance (after
Opening)
MIL-STD-202, Method 302, Test Condition
A (10,000 ohms minimum)
Thermal Shock
MIL-STD-202, Method 107, Test
Condition B, 5 cycles, -65°C /
+125°C, 15 minutes @ each extreme
Mechanical Shock
MIL-STD-202, Method 213, Test I:
Deenergized. 100G’s pk amplitude,
sawtooth wave 6ms duration, 3
cycles XYZ+xyz = 18 shocks
Vibration
MIL-STD-202, Method 201: 0.03”
amplitude, 10-55 Hz in 1 min. 2hrs
each XYZ=6hrs
Moisture Resistance MIL-STD-202, Method 106, 10 cycles
Salt Spray
MIL-STD-202, Method 101, Test
Condition B (48hrs)
Resistance to Soldering
Heat
MIL-STD-202, Method 210, Test
condition B (10 sec at 260°C)
Product Characteristics
1 A
T
6.86
(.270")
3.15
(.124")
2.95
(.116")
1.96
(.077")
2.69 ± .25
(.106")
2.69 ± .25
(.106")
1.45
(.057")
6.10 ± .20
(.240")
Recommended pad layout
F
Dimensions
Packaging
Part Numbering System
Packaging
Option
Packaging
Specification
Quantity
Quantity &
Packaging
Code
12mm Tape
and Reel
EIA RS-481-1
(IEC 286, part 3)
5000 NR
12mm Tape
and Reel
EIA RS-481-1
(IEC 286, part 3)
1000 MR
0452 001. M R L
SERIES
AMP Code
QUANTITY Code
PACKAGING Code
M = 1000 pcs
N = 5000 pcs
R = Tape and Reel
L - RoHS Compliant & Halogen Free
(Gold Plated Caps)
Refer to Amp Code column in the
Electrical Specifications table.
The dot is positioned at the end of the
number sequence with whole ratings
and within for fractional ratings.
Example: 0.375 Amp product is
0452.375MRL (1 amp product shown)
Notes:
452 series may be ordered as “RoHS and HF (Gold Plated Caps)” (“L” suffix).
454 series is available only as “RoHS and HF” version and does not require “L” suffix.
Please do not include “L” suffix within 454 series ordering instructions.
SN-RoHS Compliant & Halogen Free
(Sn-dipped Caps)
452 Series
454 Series
452 Series
454 Series
452 Series
454 Series
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.
Additional Information
Datasheet
Samples
Resources
Datasheet
Samples
Resources