458 Series 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 > 458 Series 1206 Size Inrush Withstand Fuse
458 Series Fuse
Description
Agency Approvals
Electrical Characteristics for Series
Features
Surface Mount Fuse
Fully compatible with
lead free soldering
profiles
RoHS Compliant and
Halogen-Free
Available in ratings of
1 to 10 Amperes
RoHS
% of Ampere
Rating Opening Time
100% 4 hours, Minimum
250% 5 seconds, Maximum
AGENCY AGENCY FILE NUMBER AMPERE RANGE
E10480 1A–10A
Notes:
1. l2t values stated for 8 msec opening time
2. Cold resistance measured at less than 10% of rated current at 25°C.
3. Agency Approval Table Key: X=Approved or Certified, P=Pending and Blank=Not Approved
4. Have special electrical characteristic needs? Contact Littelfuse to learn more about application specific options.
The 458 Series Nano Fuse is an ultra-small, square
surface mount fuse designed to support a variety of space
constrained overcurrent protection applications. Offering a
1206 size footprint, it is the smallest wire-in-air type surface
mount fuse offered by Littelfuse.
Applications
Notebook PC
LCD backlight inverter
LCD Panel
DC/DC converter
Battery Pack
Car Navigation System
Network Equipment
Telecom Equipment
Electronic Signage
Portable Consumer
Electronics
Electrical Specifications by Item
Ampere
Rating
(A)
Amp
Code Marking
Max
Voltage
Rating (V)
Interrupting
Rating
Nominal Cold
Resistance
(Ohms)
Nominal
Melting
I2t (A2sec)
Agency
Approvals
1. 0 0 01. 1
75V
50A @ 75VDC
50A @ 48VAC
0.180 .168 x
1.25 1.25 1.25 0.125 .313 x
1. 5 01. 5 1. 5 0.099 .548 x
1. 6 01. 6 1. 6 0.092 .562 x
2 002. 2 0.0695 .952 x
2.5 02.5 2.5 0.06 1.408 x
3 003. 3 0.049 2.289 x
3.15 3.15 3.15 0.045 2.457 x
3.5 03.5 3.5 0.0375 4.00 x
4 004. 4
50A @ 75VDC
50A @ 32VAC
0.032 4.832 x
5 005. 5 0.027 7.938 x
6.3 06.3 6.3 0.0192 14.37 x
70 0 7. 7
63V 50A @ 63VDC
50A @ 32VAC
0.0175 20.48 x
8 008. 8 0.0058 13.448 x
10.0 010. 10 0.00465 15.0 x
Specifications are subject to change without notice. Application testing is strongly recommended.
Additional Information
Datasheet Samples
Resources
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© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/14/17
Surface Mount Fuses
NANO > 458 Series 1206 Size Inrush Withstand Fuse
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
Temperature Re-rating Curve
100
10
1
0.1
0.01
0.001
1.00A
1.25A
1.50A
1.60A
2.00A
2.50A
3.00A
3.15A
3.50A
4.00A
5.00A
6.30A
7.00A
8.00A
10.00A
CURRENT IN AMPS
TIME IN SECONDS
0.1 110 100 1000
Note:
1. Rerating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.
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
Soldering Parameters
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© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/14/17
Surface Mount Fuses
NANO > 458 Series 1206 Size Inrush Withstand Fuse
Materials Body: Ceramic
Cap: Gold Plated Brass
Product Marking Body: Current Rating
(Refer to Electrical Characteristic table)
Insulation Resistance
(after Opening)
MIL-STD-202, Method 302,
Test Condition A (10,000 ohms,
Minimum)
Solderability MIL-STD-202, Method 208
Resistance to
Soldering Heat
MIL-STD-202, Method 210,
Test Condition B (10 sec at 260oC)
Moisture Sensitivity
Level Level 1 J-STD-020
Product Characteristics
Packaging
Packaging Option Packaging Specification Quantity Quantity &
Packaging Code
8mm Tape and Reel EIA-RS 481-1 1500 DR
Operating Temperature –55OC to 125OC with proper derating
Thermal Shock
MIL-STD-202, Method 107,
Test Condition B (5 cycles -65oC
to +125oC)
Vibration MIL-STD-202, Method 201
(10-55 Hz)
Moisture Resistance
MIL-STD-202, Method 106,
High Humidity (90-98%RH),
Heat (65oC)
Salt Spray MIL-STD-202, Method 101,
Test Condition B
Shock
MIL-STD-202, Method 213,
Test Condition I (100 G’s peak for 6
milliseconds)
SERIES
QUANTITY Code
Refer to Electrical
characteristics table
D: 1500 pcs
R: Tape and Reel
Example:
1.5 amp product is
0458 D R (1 amp
product shown above).
3.175
(.125”) 1.575
(.062”)
1.575
(.062”)
3.65
(.143”)
0.813
(.032”)
2.05
(.081”)
1.185
(.047”)
1.28
(.050”)
Recommended Pad Layout
AMP Code
PACKAGING Code
0458 001. D R
Dimensions Part Numbering System
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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