Datasheet

376
Surface Mount Fuses
www.littelfuse.com
Subminiature Surface Mount
NANO
2®
FUSE Very Fast-Acting 451/453 Series
The Nano
2
SMF Fuse is a very small, square surface mount fuse that is
also available in a surface mount holder.
• 451 Series RoHS Compliant version now available, use ordering suffix
‘L’ (see example on data sheet).
ELECTRICAL CHARACTERISTICS:
% of Ampere Ampere Opening
Rating Rating Time
100% 1/16–15 4 hours, Minimum
200%
1/16–10 5 seconds, Maximum
12–15 20 seconds, Maximum
AGENCY APPROVALS: Recognized under the Components Program
of Underwriters Laboratories and Certified by CSA. Approved by METI
from 1 through 5 amperes. UL Listed 0.062 - 5A.
AGENCY FILE NUMBERS: UL E10480, CSA LR 29862.
INTERRUPTING RATINGS:
1/16 – 8A 50 amperes at 125 VAC/VDC
300 amperes at 32 VDC
10A 35 amperes at 125 VAC/50 amperes at 125 VDC
300 amperes at 32 VDC
12A – 15A 50 amperes at 65 VAC/VDC
300 amperes at 24 VDC
ENVIRONMENTAL SPECIFICATIONS:
Operating Temperature:
–55°C to 125°C.
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).
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
Tin-Lead Silver Nominal Nominal
Plated Plated Ampere Voltage Resistance Melting I
2
t
Catalog # Catalog # Rating Rating Cold Ohms A
2
Sec.
– 0451.062 0.062 125 5.50 0.00019
– 0451.080 0.080 125 4.05 0.00033
– 0451.100 0.100 125 3.10 0.00138
– 0451.125 0.125 125 1.70 0.00286
0451.160 0453.160 0.160 125 1.80 0.00306
0451.200 0453.200 0.200 125 1.40 0.00652
0451.250 0453.250 0.250 125 1.05 0.01126
0451.315 0453.315 0.315 125 0.78 0.0231
0451.375 0453.375 0.375 125 0.610 0.0425
0451.400 0453.400 0.400 125 0.560 0.0484
0451.500 0453.500 0.500 125 0.420 0.0795
0451.630 0453.630 0.630 125 0.305 0.143
0451.750 0453.750 0.750 125 0.245 0.185
0451.800 0453.800 0.800 125 0.212 0.271
0451 001. 0453 001. 1.0 125 0.153 0.459
0451 1.25 0453 1.25 1.25 125 0.0780 0.664
0451 01.5 0453 01.5 1.5 125 0.0630 0.853
0451 01.6 0453 01.6 1.6 125 0.0580 1.060
0451 002. 0453 002. 2.0 125 0.0367 0.530
0451 02.5 0453 02.5 2.5 125 0.0286 1.029
0451 003. 0453 003. 3.0 125 0.0227 1.650
0451 3.15 0453 3.15 3.15 125 0.0215 1.920
0451 03.5 0453 03.5 3.5 125 0.0200 2.469
0451 004. 0453 004. 4 125 0.0160 3.152
0451 005. 0453 005. 5 125 0.0125 5.566
0451 06.3 0453 06.3 6.3 125 0.0096 9.17
0451 007. 0453 007. 7 125 0.0090 10.32
0451 008. 0453 008. 8 125 0.0077 20.23
0451 010. 0453 010. 10 125 0.0056 26.46
0451 012. 0453 012. 12 65 0.0049 47.97
0451 015. 0453 015. 15 65 0.0037 97.82
®
®
Refer to pg. 374 for SMF Omni-Blok
®
Holder, Series 154 000.
RoHS
100
10
1
0.1
0.01
0.001
1/16A 1/8A 1/4A 3/8A 1/2A 3/4A 1A 1 1/2A 2A 2 1/2A 3A 3 1/2A 4A 5A 7A 10A 12A 15A
0.05 0.1 1 10 100 1000
TIME IN SECONDS
CURRENT IN AMPERES
8A
Average Time Current Curves
PHYSICAL SPECIFICATIONS:
Materials: Body: Ceramic
Terminations: Tin-Lead Alloy
RoHS Compliant Terminations: Gold over Nickel Plated Caps(451)
Silver Plated Caps(453)
Soldering Parameters(see page 3 for typical soldering profile):
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 451 series add the letter ‘L’ to end of packaging
suffix. Example: 0451001.MRL (RoHS Compliant 1A, 1,000 per reel).
PATENTED
®
U
L