Surface Mount Fuses
NANO
2®
> Very Fast-Acting > 451/453 Series
451/453 Series Fuse
Description
PS
E
The Nano
2
SMF Fuse is a very small, Wire-in-Air (WIA)
square shape surface mount fuse which is very suitable
for the secondary side circuit over-current protection
applications and is designed for PCB using surface mount
technology.
• Very fast acting
• Small size
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E10480
LR29862
PS
E
• Low temperature
de-rating
• RoHS compliant
• Halogen Free
AMPERE RANGE
6.3A - 15A
62mA - 15A
1A - 5A
6.3A - 10A
62mA - 5A
• Wide range of current
rating available (62mA
to 15A)
• Wide operating
temperature range
Applications
• Notebook PC
• LCD/PDP TV
• LCD monitor
• LCD/PDP panel
• LCD backlight inverter
• Portable DVD player
NBK030205-E10480B
NBK101105-E184655
E10480
• Telecom system
• Wireless basestation
• White goods
• Game console
• Office Automation
equipment
• Battery charging circuit
protection
• Industrial equipment
• Medical equipment
• Automotive
Electrical Characteristics for Series
% of Ampere
Rating
100%
200%
Ampere Rating
1/16 –15
1/16 –10
12 –15
Opening Time
4 hours, Minimum
5 sec., Maximum
20 sec., Maximum
• Power supply
• Networking
• PC server
• Cooling fan system
• Storage system
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/451.html
or /453.html for current information.
57
Revised: January 10, 2012
451/453 Series
451/453 Series
Features
Surface Mount Fuses
Introduction to Circuit Protection
Transientology
NANO
2®
> Very Fast-Acting > 451/453 Series
Electrical Specifications by Item
Ampere
Rating
(A)
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
1.00
1.25
1.50
1.60
2.00
2.50
3.00
3.15
3.50
4.00
5.00
6.30
7.00
8.00
Amp
Code
.062
.080
.100
.125
.160
.200
.250
.315
.375
.400
.500
.630
.750
.800
001.
1.25
01.5
01.6
002.
02.5
003.
3.15
03.5
004.
005.
06.3
007.
008.
Max
Voltage
Rating
(V)
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
35 amperes @125 VAC/
50 amperes @125 VDC
10.0
010.
125
300 amperes @32 VDC
PSE: 100 amperes
@100VAC
12.0
15.0
012.
015.
65
65
50 amperes @65 VAC/VDC
300 amperes @24 VDC
0.0049
0.0037
47.97
97.82
x
x
x
x
0.0056
26.46
x
x
x
50 amperes @125VAC/VDC
300 amperes @32VDC
PSE: 100 amperes
@100VAC
Interrupting
Rating
Nominal Cold
Resistance
(Ohms)
5.5000
4.0500
3.1000
1.7000
1.2157
0.8372
0.5765
0.3918
0.6100
0.5600
0.4200
0.3050
0.2450
0.2120
0.1530
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
Nominal
Melting
I
2
t (A
2
sec)
0.00019
0.00033
0.00138
0.00286
0.0048
0.0089
0.0158
0.0311
0.0425
0.0484
0.0795
0.143
0.185
0.271
0.459
0.664
0.853
1.060
0.530
1.029
1.650
1.920
2.469
3.152
5.566
9.170
10.32
20.23
x
x
x
Agency Approvals
PS
E
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Notes:
- l
2
t calculated at 8ms.
- Resistance is measured at 10% of rated current, 25ºC
451/453 Series
58
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/451.html
or /453.html for current information.
Surface Mount Fuses
NANO
2®
> Very Fast-Acting > 451/453 Series
Temperature Rerating Curve
Average Time Current Curves
.062A
.125A
.160A
.200A
.250A
.315A
.375A
.500A
.750A
1A
1.5A
2A
2.5A
3A
3.5A
4A
5A
7A
8A
10A
12A
15A
100
10
TIME IN SECONDS
0.1
0.01
Note:
1. Derating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.
0.001
0.05 0.1
1
10
100
CURRENT IN AMPERES
1000
Soldering Parameters
Reflow Condition
- Temperature Min (T
s(min)
)
Pre Heat
- Temperature Max (T
s(max)
)
- Time (Min to Max) (t
s
)
Average ramp up rate (Liquidus Temp
(T
L
) to peak
T
S(max)
to T
L
- Ramp-up Rate
Reflow
- Temperature (T
L
) (Liquidus)
- Temperature (t
L
)
Pb – Free assembly
150°C
60 – 120 secs
5°C/second max.
5°C/second max.
217°C
60 – 90 seconds
250
+0/-5
T
P
T
L
Temperature
t
P
Ramp-up
Critical Zone
T
L
to T
P
200°C
T
S(max)
T
S(min)
Preheat
t
L
Ramp-down
t
S
25
time to peak temperature
(t 25ºC to peak)
Time
Peak Temperature (T
P
)
Time within 5°C of actual peak
Temperature (t
p
)
Ramp-down Rate
Time 25°C to peak Temperature (T
P
)
Do not exceed
Wave Soldering Parameters
°C
20 – 40 seconds
5°C/second max.
8 minutes max.
260°C
260°C Peak
Temperature,
10 seconds max.
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/451.html
or /453.html for current information.
59
451/453 Series
451/453 Series
1
Surface Mount Fuses
Introduction to Circuit Protection
Transientology
NANO
2®
> Very Fast-Acting > 451/453 Series
Product Characteristics
Body:
Ceramic
Terminations:
Gold-Plated Caps (for 451 RoHS/HF series)
SnPb Plated Caps (for 451 Non-RoHS series)
Silver-plated Caps (for 451 RoHS below
160mA Rating & 453 Series)
Brand, Ampere Rating
-55°C to 125°C
Level 1, J-STD-020C
MIL-STD-202, Method 208
MIL-STD-202, Method 302, Test
Condition A (10,000 ohms minimum)
Moisture Resistance
Salt Spray
Resistance to Soldering
Heat
MIL-STD-202, Method 107, Test
Condition B, 5 cycles, -65°C /
+125°C, 15 minutes @ each
extreme
MIL-STD-202, Method 213, Test I:
Deenergized. 100G’s pk amplitude,
sawtooth wave 6ms duration, 3
cycles XYZ+xyz = 18 shocks
MIL-STD-202, Method 201: 0.03”
amplitude, 10-55 Hz in 1 min. 2hrs
each XYZ=6hrs
MIL-STD-202, Method 106, 10
cycles
MIL-STD-202, Method 101, Test
Condition B (48hrs)
MIL-STD-202, Method 210, Test
condition B (10 sec at 260°C)
Materials
Thermal Shock
Product Marking
Operating
Temperature
Moisture Sensitivity
Level
Solderability
Insulation
Resistance
(after Opening)
Mechanical Shock
Vibration
Dimensions
6.10 ± .20
(.240")
2.69 ± .25
(.106")
2.69 ± .25
(.106")
Part Numbering System
0451 001. M R L
SERIES
451 = Gold / SnPb / Silver Plated Caps
453 = Silver Plated Caps
Refer to Electrical
characteristics table
M = 1000 pcs
N = 5000 pcs
F
7A
1.45
(.057")
6.86
(.270")
3.15
(.124")
2.95
(.116")
AMP Code
QUANTITY Code
1.96
(.077")
PACKAGING Code
R = Tape and Reel
Recommended pad layout
RoHS Compliant & Halogen Free
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.
Packaging
Packaging Option
12mm Tape and Reel
12mm Tape and Reel
Packaging Specification
EIA RS-481-2 (IEC 286, part 3)
EIA RS-481-2 (IEC 286, part 3)
Quantity
5000
1000
Quantity &
Packaging Code
NR
MR
451/453 Series
60
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/451.html
or /453.html for current information.
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