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Surface Mount Fuses
Subminiature Surface Mount
RoHS
NANO 2? UMF Fast-Acting Fuse 455 Series
? The Nano 2 UMF Fuse is a very small, square surface mount fuse design.
? Designed to International (IEC) Standards for use globally.
? Meets IEC 60127-4 UMF specifications for Fast-Acting Fuses
? RoHS Compliant version now available, use ordering suffix ‘L’
(see example on data sheet).
ELECTRICAL CHARACTERISTICS:
% of Ampere
Rating
125%
200%
1000%
Opening
Time
1 hour, Min imum
2 minutes, Max imum
0.001 sec, Min ; .01 sec Max
AGENCY APPROVALS: Listed to IEC 60127-4, Universal Modular Fuse-
6.10
Links (UMF), 125V.
AGENCY FILE NUMBERS: UL E184655.
INTERRUPTING RATINGS: 50 amperes at 125 VAC/VDC
6.86
(.270")
3.15
(.124")
(.240")
F
1A
ENVIRONMENTAL SPECIFICATIONS:
Operating Temperature: –55°C to 125°C.
1.96
2.95
(.116")
1.45
(.057")
2.69
(.106")
Shock: MIL-STD-202, Method 213, Test Condition I
(100 G’s peak for 6 milliseconds).
Vibration : MIL-STD-202, Method 201 (10 –55 Hz).
Salt Spray : MIL-STD-202, Method 101, Test Condition B.
Insulation Resistance (After Opening): MIL-STD-202, Method
302, Test Condition A, (10,000 ohms minimum).
Resistance to Soldering Heat: MIL-STD-202,
Method 210, Test Condition B (10 sec. at 260°C).
Thermal Shock: MIL-STD-202, Method 107,
Test Condition B (–65 to 125°C).
Moisture Resistance: MIL-STD-202, Method 106, High Humidity (90-
98 RH), Heat (65°C).
PHYSICAL SPECIFICATIONS:
Materials: Body: Ceramic
Terminations: Tin-Lead Alloy
RoHS Compliant Terminations: Gold over Nickel Plated Caps
. Soldering Parameters:
Wave Solder — 260°C, 10 seconds maximum
Reflow Solder — 260°C, 30 seconds maximum
Solderability : MIL-STD-202, Method 208.
PACKAGING SPECIFICATIONS: 12mm Tape and Reel per
EIA-RS481-1 (IEC 286, part3); 1,000 pieces per reel, add packaging
suffix, MR; 5,000 per reel, add packaging suffix NR.
Options: For RoHS Compliant devices add the letter ‘L’ to end of packag-
ing suffix. Example: 0455001.NRL (RoHS Compliant 1A, 5,000 per reel).
PATENTED
ORDERING INFORMATION:
Nominal
Nominal
(.077")
Recommended pad layout
Average Time Current Curves
100
10
1
0.1
0.01
2.69
(.106")
Catalog
Ampere
Voltage Cold Resistance
Melting I 2 t
0.001
Number
Rating
Rating (Ohms) 1
(A 2 sec)
0.05 0.1
1
10 100
1000
0455 .400
0455 .500
0455 001.
0455 01.6
0.4
0.5
1.0
1.6
125 0.420
125 0.305
125 0.078
125 0.0532
0.0795
0.143
0.645
1.060
CURRENT IN AMPERES
Measured at 10% of rated current, 25°C.
1
376
w w w. l i t t e l f u s e . c o m
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