Surface Mount Fuses
Subminiature Surface Mount
RoHS
NANO2® FUSE Very Fast-Acting 451/453 Series
®
®
The Nano2 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
Rating
100%
Ampere
Opening
Rating
Time
1/16 –15
4 hours, Minimum
1/16 –10
5 seconds, Maximum
200%
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.
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
6.10
(.240")
3.15
(.124")
F
2.69
(.106")
2.69
(.106")
7A
2.95
1.96 (.116")
(.077")
1.45
(.057")
Recommended pad layout
ENVIRONMENTAL SPECIFICATIONS:
Operating Temperature: –55°C to 125°C.
Shock: MIL-STD-202, Method 213, Test Condition I
Refer to pg. 374 for SMF Omni-Blok® Holder, Series 154 000.
1/4A
3/8A
1/2A
3/4A
1A
1 1/2A
2A
2 1/2A
3A
3 1/2A
4A
5A
7A
8A
10A
12A
15A
1/8A
1/16A
Average Time Current Curves
100
10
TIME IN SECONDS
(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).
Tin-Lead
Silver
Nominal
Nominal
Plated
Plated
Ampere Voltage Resistance Melting I2t
Catalog # Catalog # Rating
Rating Cold Ohms
A2 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
376
6.86
(.270")
1
0.1
0.01
0.001
0.05 0.1
1
10
100
CURRENT IN AMPERES
1000
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: R451001.MRL (RoHS Compliant 1A, 1,000 per reel).
PATENTED
w w w. l i t t e l f u s e . c o m
