
Subminiature
Axial Lead and Cartridge Fuses
PICO
II Time Lag Fuse 471 Series
390
www .littelfuse .com
The PICO II time-lag fuse is designed for applications that require
moderate inrush withstand.
For additional inrush withstand, consult the 473 Series.
RoHS Compliant version now available, use ordering suffix ‘L’
(see example on data sheet).
ELECTRICAL CHARACTERISTICS:
% of Ampere
Opening
Rating
Time
100%
4 hours, Minimum
200%
120 seconds, Max.
AGENCY APPROVALS: Recognized under the Components
Program of Underwriters Laboratories and Certified by CSA.
Approved by METI from 1 through 5 amperes.
AGENCY FILE NUMBERS: UL E10480, CSA LR 29862.
INTERRUPTING RATINGS: 50 amperes at 125 VAC and VDC.
ENVIRONMENTAL SPECIFICATIONS:
Operating Temperature: –55°C to 125°C.
Shock: MIL-STD-202, Method 213, Test Condition I
(100 G’s peak for 6 milliseconds).
Vibration: MIL-STD-202, Method 201 (10–55 Hz);
Method 204, Test Condition C (55–2000 Hz at 10 G’s Peak).
Moisture Resistance: MIL-STD-202, Method 106.
PHYSICAL SPECIFICATIONS:
Materials: Encapsulated, Epoxy-Coated Body; Solder Coated
Copper Wire Leads. RoHS Compliant Product: Pure Tin coated copper
wire leads.
Flammability Rating: UL 94V0
Soldering Parameters:
Wave Solder — 260°C, 10 seconds maximum.
Solderability: MIL-STD-202, Method 208.
Lead Pull Force: MIL-STD-202, Method 211, Test Condition A (will
withstand a 7 lb. axial pull test).
ORDERING INFORMATION:
100
10
1
0.1
0.01
0.001
0.05 0.1
1
10
100
1000
1/2A
1A
1
1/2A
2A
2
1/2A
3A
4A
5A
TIME
IN
SECONDS
CURRENT IN AMPERES
Average Time Current Curves
F
L 1 A
38.1
(1.5")
38.1
(1.5")
7.11 (.280")
REF.
EPOXY COATING
0.64 (.025")
DIA.
2.41 (.095")
DIA. REF.
Nominal
Catalog
Ampere
Voltage
Resistance
Melting I
2t
Number
Rating
Cold Ohms
A
2 Sec.
0471.500
1/2
125
0.189
0.159
0471 001.
1
125
0.085
0.722
0471 01.5
11/2
125
0.054
1.610
0471 002.
2
125
0.039
2.500
0471 02.5
21/2
125
0.030
4.390
0471 003.
3
125
0.023
6.960
0471 004.
4
125
0.012
10.600
0471 005.
5
125
0.008
15.400
PACKAGING SPECIFICATIONS: Tape and Reel per EIA-296;
T1: 2.062" (52.4mm) taped spacing; 5,000 per reel.
Options: For RoHS Compliant devices add the letter ‘L’ to end of
packaging suffix. Example: 0471001.NRT1L (RoHS Compliant 1A,
5,000 per reel).
RoHS