Axial Lead and Cartridge Fuses
Subminiature
RoHS
PICO® II 250 Volt Very Fast-Acting Fuse 263 Series
®
®
The PICO® II 250 Volt Fuse is a specially designed axial leaded fuse that
achieves a 250 volt rating in a small package.
• RoHS Compliant version now available, use ordering suffix ‘L’
(see example on data sheet).
ELECTRICAL CHARACTERISTICS:
% of Ampere
Rating
100%
200%
300%
Opening
Time
4 hours, Minimum
1 second, Maximum
0.1 second, Maximum
AGENCY APPROVALS: Recognized under the Components
Program of Underwriters Laboratories and Certified by CSA.
AGENCY FILE NUMBERS: UL E10480, CSA LR 29862.
INTERRUPTING RATING: 50 amperes at 250 VAC.
38.1
(1.5")
ENVIRONMENTAL SPECIFICATIONS:
Operating Temperature: –55°C to 125°C.
Shock: MIL-STD-202, Method 213, Test Condition I
7.62 (.300")
REF.
38.1
(1.5")
LF
3 1/2 A
250 V
(100 G’s peak for 6 milliseconds).
Vibration: MIL-STD-202, Method 201 (10–55 Hz); MIL-STD-202,
Method 204, Test Condition C (55–2000 Hz at 10 G’s Peak).
Salt Spray: MIL-STD-202, Method 101, Test Condition B (48 hrs.).
Insulation Resistance (After Opening): MIL-STD-202, Method
302, Test Condition A (10,000 ohms minimum at 100 volts).
3.683 (.145")
DIA. REF.
0.64 (.025")
DIA.
PACKAGING SPECIFICATIONS: Tape and Reel per EIA-296;
T1: 2.062" (52.4mm) taped spacing; 3,000 per reel.
Options: For RoHS Compliant devices add the letter ‘L’ to end of
packaging suffix. Example: 263001. WRT1L (RoHS Compliant 1A,
3,000 per reel).
Resistance to Soldering Heat: MIL-STD-202,
Method 210, Test Condition C (10 sec at 260°C).
Thermal Shock: MIL-STD-202, Method 107,
3/8A
1/2A
3/4A
1A
1 1/2A
2A
2 1/2A
3A
3 1/2A
4A
5A
1/4A
1/16A
Moisture Resistance: MIL-STD-202, Method 106.
1/8A
Average Time Current Curves
Test Condition B (–55°C to 125°C).
100
PHYSICAL SPECIFICATIONS:
Materials: Encapsulated, Epoxy-Coated Body; Solder Coated
Copper Leads. RoHS Compliant Product: Pure Tin coated copper
wire leads.
10
Soldering Parameters:
11
Test Condition A (will withstand 7 lb. axial pull test).
PATENTED
ORDERING INFORMATION:
Catalog
Number
263.062
263.125
263.250
263.375
263.500
263.750
263 001
263 01.5
263 002
263 02.5
263 003
263 03.5
263 004
263 005
Ampere
Rating
1/16
1/8
1/4
3/8
1/2
3/4
1
11/2
2
21/2
3
31/2
4
5
Voltage
Rating
250
250
250
250
250
250
250
250
250
250
250
250
250
250
Nominal
Resistance
Cold Ohms
5.50
1.75
0.715
0.391
0.252
0.150
0.105
0.0635
0.0444
0.0340
0.0274
0.0224
0.0193
0.0145
Nominal
Melting I 2t
A2 Sec.
0.000192
0.00251
0.0165
0.0444
0.1125
0.0411
0.087
0.398
0.74
1.197
1.77
2.33
3.08
5.55
AXIAL LEAD AND
CARTRIDGE FUSES
Solderability: MIL-STD-202, Method 208.
Lead Pull Force: MIL-STD-202, Method 211,
TIME IN SECONDS
Wave Solder — 260°C, 10 seconds maximum.
1
0.1
0.01
0.001
0.05 0.1
w w w. l i t t e l f u s e . c o m
1
10
CURRENT IN AMPERES
100
387
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