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.
Features
• 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
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
• Portable DVD player
• Power supply
• Networking
• PC server
• Cooling fan system
• Storage system
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/21/13
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
Note:
1. Derating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.
1
0.1
0.01
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
260
+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.
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/21/13
Surface Mount Fuses
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,
375mA–15A)
Silver-plated Caps (451MR RoHS ratings
below 375mA, and 453 RoHS 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)
Vibration
Moisture Resistance
Salt Spray
Resistance to Soldering
Heat
Thermal Shock
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
Mechanical Shock
Product Marking
Operating
Temperature
Moisture Sensitivity
Level
Solderability
Insulation
Resistance
(after Opening)
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
L-RoHS Compliant & Halogen Free
(gold 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.
”
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
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/21/13
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