Surface Mount Fuses
NANO
2®
> Slo-Blo
®
Fuse > 452/454 Series
452/454 Series Fuse
Description
RoHS
PS
E
The NANO
2®
Slo-Blo
®
fuse has enhanced inrush withstand
characteristics over the NANO
2®
Fast-Acting fuse. The
unique time delay feature of this fuse design helps solve
the problem of nuisance “opening” by accommodating
inrush currents that normally cause a fast-acting fuse to
open.
Features
• Small size
• Wide range of current
rating available (0.375A
to 12A)
• Wide operating
temperature range
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
•
•
•
•
•
•
• Low temperature
rerating
• RoHS compliant and
Halogen Free
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E10480
29862
PS
E
AMPERE RANGE
0.375A - 12A
0.375A - 12A
1A - 5A
NBK030205-E10480B
Electrical Characteristics for Series
% of Ampere
Rating
100%
200%
300%
800%
Opening Time
4 hours, Minimum
1 sec., Min.; 60 sec., Max.
0.2 sec., Min.; 3 sec., Max
0.02 sec., Min.; 0.1 sec., Max.
Electrical Specifications by Item
Ampere
Rating
(A)
0.375
0.500
0.750
001.
1.50
2.00
2.50
3.00
3.50
4.00
5.00
7
.00
8
12
Amp Code
.375
.500
.750
001.
01.5
002.
02.5
003.
03.5
004.
005.
007
.
008.
012.
Max
Voltage
Rating
(V)
125
125
125
125
125
125
125
125
125
125
125
75
75
75
50A @ 72 VAC
50A @ 60 VDC
100A @ 75 VDC
50A @ 125 VAC/VDC
300A @ 32 VDC
PSE: 100A @ 100 VAC
Interrupting
Rating
Nominal Cold
Resistance
(Ohms)
1.2000
0.7000
0.3600
0.2250
0.0930
0.0625
0.0450
0.0340
0.0224
0.0186
0.0136
0.0105
0.0088
0.0061
Nominal
Melting
I
2
t (A
2
sec)
0.101
0.240
0.904
1.98
3.65
8.20
15.0
20.16
26.53
34.40
53.72
123.83
137
.34
260.46
x
x
x
x
x
x
x
x
x
x
x
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
Notes:
- l
2
t calculated at 8ms.
- Resistance is measured at 10% of rated current, 25ºC
© 2018 Littelfuse, Inc.
Specifications are testing to change without notice.
Specifications are subject to change without notice. Application subject is strongly recommended.
Revised: 01/10/18
Surface Mount Fuses
NANO
2®
> Slo-Blo
®
Fuse > 452/454 Series
Product Characteristics
Body:
Ceramic
Terminations:
Gold-plated Caps / Sn-dipped Silver Plated
Caps (452 Series)
Silver-plated Caps (454 Series)
Brand, Ampere Rating
-55°C to 125°C
Level 1, J-STD-020
MIL-STD-202, Method 208
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
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
Moisture Resistance
Salt Spray
Resistance to Soldering
Heat
Dimensions
2.69 ± .25
(.106")
2.69 ± .25
(.106")
Part Numbering System
0452 001. M R L
6.10 ± .20
(.240")
F
SERIES
AMP Code
Refer to Amp Code column in the
Electrical Specifications table.
The dot is positioned at the end of the
number sequence with whole ratings
and within for fractional ratings.
Example:
0.375 Amp product is
0452.375MRL (1 amp product shown)
T
1A
1.45
(.057")
6.86
(.270")
3.15
(.124")
2.95
(.116")
QUANTITY Code
M = 1000 pcs
N = 5000 pcs
PACKAGING Code
R = Tape and Reel
L - RoHS Compliant & Halogen Free
(Gold Plated Caps)
SN-RoHS Compliant & Halogen Free
(Sn-dipped Caps)
1.96
(.077")
Recommended pad layout
Notes:
452 series may be ordered as “RoHS and HF (Gold Plated Caps)” (“L suffix).
”
454 series is available only as “RoHS and HF” version and does not require “L suffix.
”
Please do not include “L suffix within 454 series ordering instructions.
”
Packaging
Packaging
Option
12mm Tape
and Reel
12mm Tape
and Reel
Packaging
Specification
EIA RS-481-1
(IEC 286, part 3)
EIA RS-481-1
(IEC 286, part 3)
Quantity
5000
1000
Quantity &
Packaging
Code
NR
MR
Additional Information
Datasheet
452 Series
Resources
452 Series
Samples
452 Series
Datasheet
454 Series
Resources
454 Series
Samples
454 Series
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.
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/10/18
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