50
Revision: May 27, 2008
Surface Mount Fuses
©2008 Littelfuse, Inc.
451/453 Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/451.html or /453.html for current information.
NANO2® > Very Fast-Acting > 451/453 Series
Materials
Body: Ceramic
Terminations: Tin-Lead Alloy
RoHS Compliant Terminations:
Gold-plated Caps (451 series)
Silver-plated Caps (453 series)
Product Marking Brand, Ampere Rating
Operating
Temperature -55°C to 125°C
Moisture Sensitivity
Level Level 1, J-STD-020C
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. 100gn 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
Dimensions
Packaging
Part Numbering System
F
7 A
6.86
(.270")
3.15
(.124")
2.95
(.116")
1.96
(.077")
2.69
(.106")
2.69
(.106")
1.45
(.057")
6.10
(.240")
Recommended pad layout
Packaging Option Packaging Specification Quantity Quantity &
Packaging Code
12mm Tape and Reel EIA RS-481-2 (IEC 286, part 3) 5000 NR
12mm Tape and Reel EIA RS-481-2 (IEC 286, part 3) 1000 MR
0451 001. M R L
SERIES
AMP Code
QUANTITY Code
PACKAGING Code
Refer to Electrical
characteristics table
M = 1000 pcs
N = 5000 pcs
R = Tape and Reel
RoHS Compliant
451 = Gold Plated Caps
453 = Silver Plated Caps