Surface Mount Fuses
Introduction to Circuit Protection
Transientology
NANO
2®
> Very Fast-Acting > 451/453 Series
Product Characteristics
Body:
Ceramic
Terminations:
Gold-Plated Caps (for 451 RoHS/HF series)
SnPb Plated Caps (for 451 Non-RoHS series)
Silver-plated Caps (for 451 RoHS below
160mA Rating & 453 Series)
Brand, Ampere Rating
-55°C to 125°C
Level 1, J-STD-020C
MIL-STD-202, Method 208
MIL-STD-202, Method 302, Test
Condition A (10,000 ohms minimum)
Moisture Resistance
Salt Spray
Resistance to Soldering
Heat
MIL-STD-202, Method 107, Test
Condition B, 5 cycles, -65°C /
+125°C, 15 minutes @ each
extreme
MIL-STD-202, Method 213, Test I:
Deenergized. 100G’s pk amplitude,
sawtooth wave 6ms duration, 3
cycles XYZ+xyz = 18 shocks
MIL-STD-202, Method 201: 0.03”
amplitude, 10-55 Hz in 1 min. 2hrs
each XYZ=6hrs
MIL-STD-202, Method 106, 10
cycles
MIL-STD-202, Method 101, Test
Condition B (48hrs)
MIL-STD-202, Method 210, Test
condition B (10 sec at 260°C)
Materials
Thermal Shock
Product Marking
Operating
Temperature
Moisture Sensitivity
Level
Solderability
Insulation
Resistance
(after Opening)
Mechanical Shock
Vibration
Dimensions
6.10 ± .20
(.240")
2.69 ± .25
(.106")
2.69 ± .25
(.106")
Part Numbering System
0451 001. M R L
SERIES
451 = Gold / SnPb / Silver Plated Caps
453 = Silver Plated Caps
Refer to Electrical
characteristics table
M = 1000 pcs
N = 5000 pcs
F
7A
1.45
(.057")
6.86
(.270")
3.15
(.124")
2.95
(.116")
AMP Code
QUANTITY Code
1.96
(.077")
PACKAGING Code
R = Tape and Reel
Recommended pad layout
RoHS Compliant & Halogen Free
NOTE: “L” suffix applies to 451 series only
- 451 series may be ordered as either “RoHS and HF” (“L” suffix) or non-RoHS (no suffix) version.
- 453 series is available only as RoHS compliant version and does not require “L” suffix. Please do not
include “L” suffix within 453 series ordering instructions.
Packaging
Packaging Option
12mm Tape and Reel
12mm Tape and Reel
Packaging Specification
EIA RS-481-2 (IEC 286, part 3)
EIA RS-481-2 (IEC 286, part 3)
Quantity
5000
1000
Quantity &
Packaging Code
NR
MR
451/453 Series
60
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/451.html
or /453.html for current information.
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