Surface Mount Fuses
NANO2® Fuse > Very Fast-Acting > 448 Series
448 Series Fuse
RoHS Pb
PS
E
Description
The lead-free Nano2® SMF Fuse is a very small, square
surface mount fuse that is RoHS compliant, Halogen Free
and 100% lead-free. This product is fully compatible with
lead-free solder alloys and higher temperature profiles
associated with lead-free assembly.
Features
Agency Approvals
Agency
PS
E
• Wide operating
temperature range
• Very fast-acting
• UL Recognized to UL/
CSA/NMX UL 248-1 and
UL/CSA/NMX UL 248-14
• Small size
Agency File Number
Ampere Range
E10480
0.062A - 15A
29862
0.062A - 15A
NBK030205-E10480A
NBK030205-E10480B
NBK101105-E184655
1A - 1.6A
2A - 5A
6.3A - 10A
Electrical Characteristics for Series
% of Ampere Rating
Ampere Rating
Opening Time
100%
0.062A –15
4 hours, Minimum
0.062A –10
5 sec., Maximum
12 –15
20 sec., Maximum
200%
• RoHS compliant, Leadfree and Halogen Free
• Wide range of current
rating available (0.062A
to 15A)
• Conforms to DENAN’s
Appendix 3
Applications
• Notebook PC
• Storage system
• LCD/PDP TV
• Telecom system
• LCD monitor
• Wireless basestation
• LCD/PDP panel
• White goods
• LCD backlight inverter
• Game console
• Portable DVD player
• Office Automation
equipment
• Power supply
• Battery charging circuit
protection
• Networking
• PC server
• Industrial equipment
• Cooling fan system
Additional Information
Datasheet
Resources
Samples
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/21/20
Surface Mount Fuses
NANO2® Fuse > Very Fast-Acting > 448 Series
Electrical Specifications by Item
Ampere Rating
(A)
Amp Code
Max
Voltage Rating
(V)
Interrupting
Rating
Agency Approvals
Nominal Cold
Nominal Melting
Resistance
I2t (A2sec)
(Ohms)
PS
E
0.062
.062
125
5.50
0.00023
x
x
0.080
.080
125
4.42
0.00043
x
x
0.100
.100
125
2.90
0.00082
x
x
0.125
.125
125
2.58
0.00130
x
x
0.160
.160
125
1.76
0.00280
x
x
0.200
.200
125
1.65
0.00380
x
x
0.250
.250
125
0.95
0.01520
x
x
0.315
.315
125
0.7015
0.02650
x
x
0.375
.375
125
0.6155
0.02400
x
x
0.400
.400
125
0.4895
0.04160
x
x
0.500
.500
125
0.3800
0.10000
x
x
0.630
.630
125
x
0.750
.750
125
0.800
.800
125
1.00
001.
125
1.25
1.25
125
1.50
01.5
1.60
0.3125
0.121
x
0.2290
0.206
x
x
0.1907
0.272
x
x
0.08630
0.441
x
x
x
0.06619
0.900
x
x
x
125
0.06514
0.900
x
x
x
01.6
125
0.06261
1.122
x
x
x
2.00
002.
125
0.03529
0.812
x
x
x
2.50
02.5
125
0.02934
1.156
x
x
x
3.00
003.
125
0.02445
1.720
x
x
x
3.15
3.15
125
0.02300
1.810
x
x
x
3.50
03.5
125
0.02100
2.300
x
x
x
4.00
004.
125
0.01577
3.970
x
x
x
5.00
005.
125
0.01531
4.490
x
x
x
6.30
06.3
125
0.01044
12.10
x
x
x
7.00
007.
125
0.00900
13.92
x
x
x
8.00
008.
125
0.00780
18.33
x
x
x
0.00700
28.00
x
x
x
0.00533
47.59
x
x
0.00394
78.4
x
x
10.00
010.
125
12.00
012.
85
15.00
015.
85
50A @125VAC/
VDC
300A @32 VDC
PSE: 100A
@100VAC
35A @125 VAC
50A @125 VDC
300A @32 VDC
PSE: 100A
@100VAC
50A @65 VAC/
VDC
300A @24 VDC
200A @85 VDC
Notes:
- l2t calculated at 8ms.
- Resistance is measured at 10% of rated current, 25ºC
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/21/20
Surface Mount Fuses
NANO2® Fuse > Very Fast-Acting > 448 Series
448 SERIES NANO LEAD FREE VERY FAST ACTING FUSE
Average Time Current
Curves
.062 A
.080 A
.100 A
.125 A
.160 A
.200 A
.250 A
.315 A
.375 A
.40 A
.50 A
.63 A
.75 A
.80 A
1.00 A
1.25 A
1.50 A
1.60 A
2.00 A
2.50 A
3.00 A
3.15 A
3.50 A
4.00 A
5.00 A
6.30 A
7A
8A
10 A
12 A
15 A
Temperature Re-rating Curve
100
TIME IN SECONDS
10
1
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
0.1
1
10
100
1000
CURRENT IN AMPS
Soldering Parameters
Pb – Free assembly
Pre Heat
- Temperature Min (Ts(min))
150°C
- Temperature Max (Ts(max))
200°C
- Time (Min to Max) (ts)
60 – 180 secs
Average ramp up rate (Liquidus Temp (TL) to peak
5°C/second max.
TS(max) to TL - Ramp-up Rate
Reflow
5°C/second max.
- Temperature (TL) (Liquidus)
217°C
- Temperature (tL)
60 – 150 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
Wave Soldering Parameters
tP
TP
Critical Zone
TL to TP
Ramp-up
TL
TS(max)
Temperature
Reflow Condition
tL
Ramp-down
TS(min)
25
Preheat
tS
time to peak temperature
(t 25ºC to peak)
Time
260°C Peak Temperature, 10 seconds max.
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/21/20
Surface Mount Fuses
NANO2® Fuse > Very Fast-Acting > 448 Series
Product Characteristics
Product Marking
Body: Ceramic
Terminations: Gold-plated Caps
Brand, Amperage Rating
Operating Temperature
-55oC to 125oC
Moisture Sensitivity Level
Level 1, J-STD-020
Mechanical Shock
Solderability
Insulation Resistance (after
Opening)
MIL-STD-202, Method 208
MIL-STD-202, Method 302, Test Condition A
(10,000 ohms minimum)
Vibration
Materials
Thermal Shock
Moisture Resistance
Salt Spray
Resistance to Soldering Heat
Dimensions
Part Numbering System
6.10 ± .20
(.240")
7A
MIL-STD-202, Method 107, Test Condition
B, 5 cycles, -65oC to 125oC, 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 260oC)
F
2.69 ± .25
(.106")
0448
2.69 ± .25
(.106")
001. M R
Series
Amp Code*
Refer to Electrical
Characteristics table
1.45
(.057")
Quantity code
6.86
(.270")
M = 1000 pcs
Packaging code
3.15
(.124")
1.96
(.077")
R = Tape and Reel
*Example:
1.5 amp product is 044801.5MR (1 amp
product shown above).
2.95
(.116")
Recommended pad layout
Packaging
Packaging Option
Packaging Specification
Quantity
12mm Tape and Reel
EIA RS-481-1 (IEC 600286-3)
1000
Quantity &
Packaging Code
MR
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.
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/21/20
