Surface Mount Fuses
NANO
2®
> Very Fast-Acting Fuse > 451/453 Series
451/453 Series Fuse
Description
RoHS
PS
E
The Nano
2®
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.
Features
• Very fast-acting
• Small size
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E10480
29862
PS
E
• Low temperature
rerating
• RoHS compliant and
Halogen Free
AMPERE RANGE
6.3A - 20A
0.062A - 15A
1A - 5A
6.3A - 10A
0.062A - 5A
• Wide range of current
rating available
(0.062A to 20A)
• Wide operating
temperature range
Applications
• Notebook PC
• LCD/PDP TV
• LCD monitor
• LCD/PDP panel
• LCD backlight inverter
NBK030205-E10480A/B
NBK101105-E184655
E10480
• Storage system
• Telecom system
• Wireless basestation
• White goods
• Game console
• Office Automation
equipment
• Battery charging circuit
protection
• Industrial equipment
Electrical Characteristics for Series
% of Ampere
Rating
100%
200%
Ampere Rating
0.062 – 20
0.062 – 10
12 – 20
Opening Time
4 hours, Minimum
5 sec., Maximum
20 sec., Maximum
• Portable DVD player
• Power supply
• Networking
• PC server
• Cooling fan system
Additional Information
Datasheet
451 Series
Resources
451 Series
Samples
451 Series
Datasheet
453 Series
Resources
453 Series
Samples
453 Series
© 2017 Littelfuse, Inc.
Specifications are testing to change recommended.
Specifications are subject to change without notice. Application subject is strongly without notice.
Revised: 06/15/17
Surface Mount Fuses
NANO
2®
> Very Fast-Acting Fuse > 451/453 Series
Temperature Re-rating Curve
Average Time Current Curves
Fast Acting Series TC Curve
62mA
80mA
100mA
125mA
160mA
200mA
250mA
315mA
375mA
400mA
500mA
630mA
750mA
800mA
1A
1.25A
1.5A
1.6A
2A
2.5A
3A
3.15A
3.5A
4A
5A
6.3A
7A
8A
10A
12A
15A
20A
100
10
1
TIME IN SECONDS
0.1
Note:
1. Rerating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.
0.01
0.001
0.01
0.1
1
10
100
1000
10000
CURRENT IN AMPS
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.
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 06/15/17
Surface Mount Fuses
NANO
2®
> Very Fast-Acting Fuse > 451/453 Series
Product Characteristics
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)
Brand, Ampere Rating
–55°C to 125°C
Moisture Resistance
Level 1, J-STD-020
MIL-STD-202, Method 208
MIL-STD-202, Method 302, Test Condition
A (10,000 ohms minimum)
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)
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
1.45
(.057")
7A
AMP Code
6.86
(.270")
3.15
(.124")
2.95
(.116")
QUANTITY Code
1.96
(.077")
PACKAGING Code
R = Tape and Reel
Recommended pad layout
L-RoHS Compliant & Halogen Free
(Gold Plated Caps)
SN-RoHS Compliant & Halogen Free
(Sn-dipped 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
Disclaimer Notice - 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.
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 06/15/17
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