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Surface Mount Fuses
Subminiature Surface Mount
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.
ELECTRICAL CHARACTERISTICS:
% of Ampere
Rating
Ampere
Rating
Opening
Time
100%
1/16–15
4 hours, Minimum
1/16–10
12–15
5 seconds, Maximum
20 seconds, Maximum
200%
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.
6.10
(.240")
2.69
(.106")
6.86
(.270")
INTERRUPTING RATINGS:
1/16 – 8A 50 amperes at 125 VAC/VDC
300 amperes at 32 VDC
F
3.15
(.124")
2.69
(.106")
10A
35 amperes at 125 VAC/50 amperes at 125 VDC
300 amperes at 32 VDC
7 A
12A – 15A 50 amperes at 65 VAC/VDC
2.95
(.116")
1.45
(.057")
300 amperes at 24 VDC
1.96
(.077")
ENVIRONMENTAL SPECIFICATIONS:
Recommended pad layout
Operating Temperature: –55°C to 125°C.
Shock: MIL-STD-202, Method 213, Test Condition I
(100 G’s peak for 6 milliseconds).
Average Time Current Curves
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).
100
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).
10
Moisture Resistance: MIL-STD-202, Method 106, High Humidity
(90-98 RH), Heat (65°C).
1
Tin-Lead
Plated
Silver
Nominal
Nominal
Plated
Ampere Voltage Resistance Melting I2t
Catalog # Catalog # Rating
Rating Cold Ohms
A2 Sec.
–
R451.062
R451.080
R451.100
R451.125
0453.160
0453.200
0453.250
0453.315
0453.375
0453.400
0453.500
0453.630
0453.750
0453.800
0.062
0.080
0.100
0.125
0.160
0.200
0.250
0.315
0.375
0.400
0.500
0.630
0.750
0.800
1.0
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
65
5.50
0.00019
0.00033
0.00138
0.00286
0.00306
0.00652
0.01126
0.0231
0.0425
0.0484
0.0795
0.143
–
4.05
0.1
–
3.10
–
1.70
R451.160
R451.200
R451.250
R451.315
R451.375
R451.400
R451.500
R451.630
R451.750
R451.800
1.80
1.40
1.05
0.78
0.01
0.001
0.610
0.560
0.420
0.305
0.245
0.212
0.153
0.0780
0.0630
0.0580
0.0367
0.0286
0.0227
0.0215
0.0200
0.0160
0.0125
0.0096
0.0090
0.0077
0.0056
0.0049
0.0037
0.185
0.271
R451 001. 0453 001.
R451 1.25 0453 1.25
R451 01.5 0453 01.5
R451 01.6 0453 01.6
R451 002. 0453 002.
R451 02.5 0453 02.5
R451 003. 0453 003.
R451 3.15 0453 3.15
R451 03.5 0453 03.5
R451 004. 0453 004.
R451 005. 0453 005.
R451 06.3 0453 06.3
R451 007. 0453 007.
R451 008. 0453 008.
R451 010. 0453 010.
R451 012. 0453 012.
R451 015. 0453 015.
0.459
0.05 0.1
1
10
CURRENT IN AMPERES
100
1000
1.25
1.5
0.664
0.853
1.6
1.060
PHYSICAL SPECIFICATIONS:
Materials: Body: Ceramic
Terminations: Tin-Lead Alloy or Silver 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, part 3); 1,000 per reel, add packaging suffix, MR;
5,000 per reel, add packaging suffix NR.
2.0
0.530
2.5
1.029
3.0
1.650
3.15
3.5
1.920
2.469
4
3.152
5
5.566
6.3
9.17
7
10.32
8
20.23
10
26.46
12
15
47.97
65
97.82
Refer to pg. 271 for SMF Omni-Blok® Holder, Series 154 000.
PATENTED
268
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