451, 453 Series NANO2® Fuse Datasheet by Littelfuse Inc.

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© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/14/17
Surface Mount Fuses
NANO > Very Fast-Acting Fuse > 451/453 Series
451/453 Series Fuse
Description
The Nano SMF Fuse is a very small, Wire-in-Air (WIA)
square shape surface mount fuse that was designed for
secondary side circuit over-current protection applications.
These fuses are designed for PCB using surface mount
technology.
Agency Approvals
AGENCY AGENCY FILE NUMBER AMPERE RANGE
E10480 6.3A - 20A
29862 0.062A - 15A
PS
E
NBK030205-E10480A/B
NBK101105-E184655
1A - 5A
6.3A - 10A
E10480 0.062A - 5A
Electrical Characteristics for Series
Features
Very fast-acting
Small size
Wide range of current
rating available
(0.062A to 20A)
Wide operating
temperature range
Low temperature
rerating
RoHS compliant and
Halogen Free
% of Ampere
Rating Ampere Rating Opening Time
100% 0.062 – 20 4 hours, Minimum
200%
0.062 – 10 5 sec., Maximum
12 – 20 20 sec., Maximum
RoHS PS
E
Applications
Notebook PC
LCD/PDP TV
LCD monitor
LCD/PDP panel
LCD backlight inverter
Portable DVD player
Power supply
• Networking
PC server
Cooling fan system
Storage system
Telecom system
Wireless basestation
White goods
Game console
• Office Automation
equipment
Battery charging circuit
protection
Industrial equipment
Additional Information
Datasheet Samples
Resources
Datasheet Samples
Resources
451 Series
453 Series
451 Series
453 Series
451 Series
453 Series
Specifications are subject to change without notice. Application testing is strongly recommended.
% Littelfuse’ Wampum \ Answusmllumd
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/14/17
Surface Mount Fuses
NANO > Very Fast-Acting Fuse > 451/453 Series
Electrical Specifications by Item
Ampere
Rating
(A)
Amp
Code
Max
Voltage
Rating
(V)
Interrupting
Rating
Nominal
Cold
Resistance
(Ohms)
Nominal
Melting
I2t (A2sec)
Agency Approvals
PS
E
0.062 .062 125
50A @125VAC/VDC
300A @32VDC
PSE: 100A @100VAC
5.5000 0.00019 x x
0.080 .080 125 4.0500 0.00033 x x
0.100 .100 125 3.1000 0.00138 x x
0.125 .125 125 1.7000 0.00286 x x
0.160 .160 125 1.2157 0.0048 x x
0.200 .200 125 0.8372 0.0089 x x
0.250 .250 125 0.5765 0.0158 x x
0.315 .315 125 0.3918 0.0311 x x
0.375 .375 125 0.4541 0.0442 x x
0.400 .400 125 0.4233 0.0551 x x
0.500 .500 125 0.3046 0.0824 x x
0.630 .630 125 0.2022 0.1381 x x
0.750 .750 125 0.1444 0.2143 x x
0.800 .800 125 0.1355 0.2654 x x
1. 0 0 0 01. 125 0.0780 0.6029 x x x
1.25 1.25 125 0.0780 0.664 x x x
1.50 01. 5 125 0.0630 0.853 x x x
1.60 01. 6 125 0.0580 1.060 x x x
2.00 002. 125
50A @125VAC/VDC
10,000A @75VDC
300A @32VDC
PSE: 100A @100VAC
0.0367 0.530 x x x
2.50 02.5 125 0.0286 1.029 x x x
3.00 003. 125 0.0227 1.650 x x x
3.15 3.15 125 0.0215 1.920 x x x
3.50 03.5 125 0.0200 2.469 x x x
4.00 004. 125 0.0160 3.152 x x x
5.00 005. 125 0.0125 5.566 x x x
6.30 06.3 125 50A @125VAC/VDC
400A @32VDC
PSE: 100A @100VAC
0.0096 9.170 xx x
7. 0 0 0 0 7. 125 0.0090 10.32 xx x
8.00 008. 125 0.0077 20.23 xx x
10.0 010. 125
35A @125 VAC/
50A @125 VDC
400A @32 VDC
PSE: 100A @100VAC
0.0056 26.46 x x x
12.0 012. 65 150A @65VDC
100A @65VAC
400A @32VDC
0.0049 47.97 x x
15.0 015. 65 0.0037 97.82 x x
20.0 020. 65 0.00244 154 x
Notes:
- l2t calculated at 8ms.
- Resistance is measured at 10% of rated current, 25ºC
Disclaimer Notice - Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military,
aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other
application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those
expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any
purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products
used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is
subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. Information furnished is believed to be accurate and reliable.
However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not
designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics.
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© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/14/17
Surface Mount Fuses
NANO > Very Fast-Acting Fuse > 451/453 Series
Average Time Current Curves
Reflow Condition Pb – Free assembly
Pre Heat
- Temperature Min (Ts(min))150°C
- Temperature Max (Ts(max))200°C
- Time (Min to Max) (ts)60 – 120 secs
Average ramp up rate (Liquidus Temp
(TL) to peak 5°C/second max.
TS(max) to TL - Ramp-up Rate 5°C/second max.
Reflow - Temperature (TL) (Liquidus) 217°C
- Temperature (tL)60 – 90 seconds
Peak Temperature (TP)260+0/–5 °C
Time within 5°C of actual peak
Temperature (tp)20 – 40 seconds
Ramp-down Rate 5°C/second max.
Time 25°C to peak Temperature (TP)8 minutes max.
Do not exceed 260°C
Soldering Parameters
Temperature Re-rating Curve
0.001
0.01
0.1
1
10
100
0.01 0.1 1 10 100 1000 10000
TIME IN SECONDS
CURRENT IN AMPS
Fast Acting Series TC Curve
8A
10A
12A
5A
6.3A
7A
15A
3.5A
3.15A
3A
2.5A
2A
1.5A
1.25A
1A
800mA
750mA
630mA
500mA
375mA
400mA
315mA
250mA
200mA
100mA
125mA
160mA
80mA
62mA
1.6A
20A
Note:
1. Rerating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.
Wave Soldering Parameters
260°C Peak
Temperature,
10 seconds max.
Time
Temperature
TP
TL
TS(max)
TS(min)
25
tP
tL
tS
time to peak temperature
(t 25ºC to peak)
Ramp-down
Ramp-up
Preheat
Critical Zone
TL to TP
% Littelfuse’ ExpimscApnlmd \ Answusmllumd 5m 0451 film R L
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/14/17
Surface Mount Fuses
NANO > Very Fast-Acting Fuse > 451/453 Series
Materials
Body: Ceramic
Terminations:
Gold-Plated Caps / Sn-dipped Silver Plated
Caps (451 RoHS/HF series)
SnPb Plated Caps (for 451 Non-RoHS series,
375mA-15A)
Silver-plated Caps (451MR RoHS ratings
below 375mA and 453 RoHS Series)
Product Marking Brand, Ampere Rating
Operating
Temperature –55°C to 125°C
Moisture Sensitivity
Level Level 1, J-STD-020
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. 100G’s 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
6.86
(.270")
3.15
(.124")
2.95
(.116")
1.96
(.077")
2.69 ± .25
(.106")
2.69 ± .25
(.106")
1.45
(.057")
6.10 ± .20
(.240")
Recommended pad layout
F7 A
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
L-RoHS Compliant & Halogen Free
(Gold Plated Caps)
451 = Gold / SnPb / Silver Plated Caps
453 = Silver Plated Caps
NOTE: “L suffix applies to 451 series only
- 451 series may be ordered as either “RoHS and HF” (“L” suffix) or non-RoHS (no suffix) version.
- 453 series is available only as RoHS compliant version and does not require “L” suffix. Please do not
include “L” suffix within 453 series ordering instructions.
SN-RoHS Compliant & Halogen Free
(Sn-dipped Caps)

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