Surface Mount Fuses
Introduction to Circuit Protection
NANO2® > Very Fast-Acting > 451/453 Series
Transientology
Product Characteristics
Body: Ceramic
Terminations:
Gold-PlatedꢀCapsꢀ(forꢀ451ꢀRoHS/HFꢀseries)
SnPbꢀPlatedꢀCapsꢀ(forꢀ451ꢀNon-RoHSꢀseries)
MIL-STD-202,ꢀMethodꢀ107,ꢀꢀTestꢀ
Condition B, 5 cycles, -65°C /
+125°C, 15 minutes @ each
extreme
Thermal Shock
Materials
Silver-platedꢀCapsꢀ(forꢀ451ꢀRoHSꢀbelowꢀ
160mAꢀRatingꢀ&ꢀ453ꢀSeries)
MIL-STD-202,ꢀMethodꢀ213,ꢀTestꢀI:ꢀ
Deenergized.ꢀꢀ100G’sꢀpkꢀamplitude,ꢀ
sawtooth wave 6ms duration, 3
cyclesꢀXYZ+xyzꢀ=ꢀ18ꢀshocks
Mechanical Shock
Vibration
Product Marking
Brand,ꢀAmpereꢀRating
Operating
MIL-STD-202,ꢀMethodꢀ201:ꢀ0.03”ꢀ
amplitude,ꢀ10-55ꢀHzꢀinꢀ1ꢀmin.ꢀꢀ2hrsꢀ
eachꢀXYZ=6hrs
-55°C to 125°C
Temperature
Moisture Sensitivity
Level
Levelꢀ1,ꢀJ-STD-020C
MIL-STD-202,ꢀMethodꢀ106,ꢀ10ꢀ
cycles
Moisture Resistance
Salt Spray
Solderability
MIL-STD-202,ꢀMethodꢀ208
Insulation
Resistance
(after Opening)
MIL-STD-202,ꢀMethodꢀ101,ꢀTestꢀ
Condition B (48hrs)
MIL-STD-202,ꢀMethodꢀ302,ꢀTestꢀ
Condition A (10,000 ohms minimum)
Resistance to Soldering
Heat
MIL-STD-202,ꢀMethodꢀ210,ꢀTestꢀ
condition B (10 sec at 260°C)
Dimensions
Part Numbering System
6.10 .20
(.240")
2.69 .25
(.106")
0451 001. M R L
F
2.69 .25
(.106")
SERIES
7 A
451ꢀ=ꢀGoldꢀ/ꢀSnPbꢀ/ꢀSilverꢀꢀPlatedꢀCaps
453ꢀ=ꢀSilverꢀPlatedꢀCaps
1.45
(.057")
AMP Code
ReferꢀtoꢀElectricalꢀ
6.86
(.270")
characteristics table
3.15
(.124")
QUANTITY Code
Mꢀ=ꢀ1000ꢀpcs
Nꢀ =ꢀ5000ꢀpcs
2.95
(.116")
1.96
(.077")
PACKAGING Code
Rꢀ=ꢀTapeꢀandꢀReel
Recommended pad layout
RoHS Compliant & Halogen Free
NOTE: “L” suffix applies to 451 series only
-ꢀ 451ꢀseriesꢀmayꢀbeꢀorderedꢀasꢀeitherꢀ“RoHSꢀandꢀHF”ꢀ(“L”ꢀsuffix)ꢀorꢀnon-RoHSꢀ(noꢀsuffix)ꢀversion.
-ꢀ 453ꢀseriesꢀisꢀavailableꢀonlyꢀasꢀRoHSꢀcompliantꢀversionꢀandꢀdoesꢀnotꢀrequireꢀ“L”ꢀsuffix.ꢀPleaseꢀdoꢀnotꢀ
includeꢀ“L”ꢀsuffixꢀwithinꢀ453ꢀseriesꢀorderingꢀinstructions.
Packaging
Quantity &
Packaging Option
12mmꢀTapeꢀandꢀReel
12mmꢀTapeꢀandꢀReel
Packaging Specification
EIAꢀRS-481-2ꢀ(IECꢀ286,ꢀpartꢀ3)
EIAꢀRS-481-2ꢀ(IECꢀ286,ꢀpartꢀ3)
Quantity
Packaging Code
5000
1000
NR
MR
© 2009 Littelfuse, Inc.
451/453 Series
60
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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