Axial Lead & Cartridge Fuses
PICO
®
ll > Very Fast-Acting > 263 Series
263 Series,
PICO
®
II 250 Volt, Very Fast-Acting Fuse
PS
E
Description
The PICO
®
II 263 Series Fuse is a specially designed
axial leaded fuse that achieves a 250V rating in a small
package.
Features
temperature range
5A)
Applications
Agency
Agency File Number
Ampere Range
de-rating
Agency Approvals
E10480
PS
E
62mA - 5A
1A - 5A
125mA - 5A
machines
JET 1896-31007-1001
LR 29862
Electrical Characteristics
% of Ampere
Rating
100%
200%
300%
Opening Time
Min.
Max.
Max.
Ampere
Rating
(A)
0.062
0.125
0.250
0.375
0.500
0.750
1.00
1.50
2.00
2.50
3.00
3.50
4.00
5.00
Amp Code
.062
.125
.250
.375
.500
.750
001.
01.5
002.
02.5
003.
03.5
004.
005.
Max
Voltage
Rating
(V)
250
250
250
250
250
250
250
250
250
250
250
250
250
250
Interrupting
Rating
Nominal Cold
Resistance
(Ohms)
5.50
1.75
0.715
0.391
0.332
0.150
0.105
0.0635
0.0444
0.0340
0.0274
0.0224
0.0193
0.0145
Nominal
Melting
I
2
t (A
2
sec)
0.000192
0.00251
0.0165
0.0444
0.084
0.0411
0.087
0.398
0.74
1.197
1.77
2.33
3.08
5.55
Nom
Voltage Drop
(mV)
0.74
0.3
0.235
0.195
0.302
0.176
0.165
0.148
0.137
0.128
0.1225
0.1175
0.1125
0.1065
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Agency Approvals
PS
E
50 amperes
at 250 VAC
PSE: 100
amperes
at 125 VAC.
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/263.html for current information.
207
Revised: January 19, 2010
263 Series
263 Series
Electrical Characteristics
Introduction to & Cartridge Fuses
Axial Lead Circuit Protection
Transientology
PICO
®
ll > Very Fast-Acting > 263 Series
Temperature Rerating Curve
Average Time Current Curves
3/8A
1/2A
3/4A
1A
1 1/2A
2A
2 1/2A
3A
3 1/2A
4A
5A
1
10
CURRENT IN AMPERES
1/16A
100
10
TIME IN SECONDS
1
0.1
0.01
1/8A
Soldering Parameters
Recommended Process Parameters:
Wave Parameter
Preheat:
100
°
C
150
°
C
Preheat Time:
Solder Pot Temperature:
Solder Dwell Time:
260
°
Lead-Free Recommendation
0.001
0.05 0.1
100
Recommended Hand-Solder Parameters:
Note: These devices are not recommended for IR or
Convection Reflow process.
1/4A
263 Series
208
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/263.html for current information.
Axial Lead & Cartridge Fuses
PICO
®
ll > Very Fast-Acting > 263 Series
Product Characteristics
:
Materials
leads
Solderability
Product Marking
Operating
Temperature
Shock
Vibration
Peak)
Salt Spray
Insulation Resistance
(After Opening):
Resistance to Soldering
Heat
Thermal Shock
Moisture Resistance
Lead Pull Force
axial pull test)
Dimensions
62.7 (2.468")
27.78
(1.094")
0.64 (.025")
52.4 (2.062")*
7.11 (.280")
27.78
(1.094")
3.94 (.16")
MAX
Part Numbering System
0263 xxxx W R T1 L
Series
Current Rating
6.35 (.25")
tape
F
L
3 1/2 A
250 V
6.35 (.25")
tape
5.0 (.197")
Refer to Amp Code column of
Electrical Characteristics Table
F
L
3 1/2 A
250 V
Quantity
W = 3000
M = 1000
H = 100
Type of Packaging
Lead Length
T1: 52.4mm (2.062”)*
L - RoHS
HF - Halogen-free
Packaging
Packaging Option
T1: 52.4mm (2.062”)
Tape and Reel
Packaging Specification
EIA 296
Quantity
Quantity &
Packaging Code
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/263.html for current information.
209
263 Series
263 Series
R = Reel
A = Ammo Pack
X = Loose Pack
Introduction to Circuit Protection
Transientology
210
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
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