Introduction to Circuit Protection
Introduction to Circuit Protection
Transientology
60
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Surface Mount Fuses
451/453 Series
NANO
2®
> Very Fast-Acting > 451/453 Series
Please refer to www.littelfuse.com/series/451.html
or /453.html for current information.
Materials
Body: Ceramic
Terminations:
Gold-PlatedCaps(for451RoHS/HFseries)
SnPbPlatedCaps(for451Non-RoHSseries)
Silver-platedCaps(for451RoHSbelow
160mARating&453Series)
Product Marking
Brand,AmpereRating
Operating
Temperature
-55°C to 125°C
Moisture Sensitivity
Level
Level1,J-STD-020C
Solderability
MIL-STD-202,Method208
Insulation
Resistance
(after Opening)
MIL-STD-202,Method302,Test
Condition A (10,000 ohms minimum)
Thermal Shock
MIL-STD-202,Method107,Test
Condition B, 5 cycles, -65°C /
+125°C, 15 minutes @ each
extreme
Mechanical Shock
MIL-STD-202,Method213,TestI:
Deenergized.100G’spkamplitude,
sawtooth wave 6ms duration, 3
cyclesXYZ+xyz=18shocks
Vibration
MIL-STD-202,Method201:0.03”
amplitude,10-55Hzin1min.2hrs
eachXYZ=6hrs
Moisture Resistance
MIL-STD-202,Method106,10
cycles
Salt Spray
MIL-STD-202,Method101,Test
Condition B (48hrs)
Resistance to Soldering
Heat
MIL-STD-202,Method210,Test
condition B (10 sec at 260°C)
Product Characteristics
Dimensions
Packaging
Part Numbering System
F
7 A
6.86
(.270")
3.15
(.124")
2.95
(.116")
1.96
(.077")
2.69 ± .25
(.106")
(.106")
1.45
(.057")
(.240")
Recommended pad layout
Packaging Option Packaging Specification Quantity
Quantity &
Packaging Code
12mmTapeandReel EIARS-481-2(IEC286,part3) 5000 NR
12mmTapeandReel EIARS-481-2(IEC286,part3) 1000 MR
0451 001. M R L
SERIES
AMP Code
QUANTITY Code
PACKAGING Code
RefertoElectrical
characteristics table
M=1000pcs
N =5000pcs
R=TapeandReel
RoHS Compliant & Halogen Free
451=Gold/SnPb/SilverPlatedCaps
453=SilverPlatedCaps
NOTE: “L” suffix applies to 451 series only
- 451seriesmaybeorderedaseither“RoHSandHF”(“L”sufx)ornon-RoHS(nosufx)version.
- 453seriesisavailableonlyasRoHScompliantversionanddoesnotrequire“L”sufx.Pleasedonot
include“L”sufxwithin453seriesorderinginstructions.