AXIAL LEAD AND CARTRIDGE FUSES
SUBMINIATURE
PICO
®
II
Slo-Blo
®
Type Fuse
1
®
®
The PICO
®
II Slo-Blo
®
fuse combines time delay performance
characteristics with the proven reliability of a Picofuse.
ELECTRICAL CHARACTERISTICS:
% of Ampere
Rating
100%
200%
300%
800%
Opening
Time
4 hours,
Minimum
1 second,
Min.:
60 seconds,
Max.
0.2 seconds,
Min.:
3 seconds,
Max.
0.02 seconds,
Min.:
0.1 seconds,
Max.
AGENCY APPROVALS:
1
Recognized under the
Components Program of Underwriters Laboratories and
Certified by CSA. Approved by MITI from 1 through 5
amperes.
AGENCY FILE NUMBERS:
UL E10480, CSA LR 29862.
INTERRUPTING RATINGS:
50 amperes at 125 VDC/VAC
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);
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.
Insulation Resistance (After Opening):
MIL-STD-202,
Method 302, (10,000 ohms minimum at 100 volts).
Resistance to Soldering Heat:
MIL-STD-202,
Method 210, Test Condition C (20 sec at 260°C).
Thermal Shock:
MIL-STD-202, Method 107,
Test Condition B (–65°C to 125°C).
Moisture Resistance:
MIL-STD-202, Method 106
(90–98% RH), Heat (65°C).
PHYSICAL SPECIFICATIONS:
Materials:
Encapsulated, Epoxy-Coated Body; Solder
Coated Copper Wire Leads.
Flammability Rating:
UL94VO.
Soldering Parameters:
Wave Solder — 260°C, 3 seconds maximum.
Solderability:
MIL-STD-202, Method 208.
Lead Pull Force:
MIL-STD-202, Method 211, Test
Condition A (will withstand a 10 lb. axial pull test).
PACKAGING SPECIFICATIONS:
Tape and Reel per
EIA-296; T1: 2.062" (52.4mm) taped spacing; 4,000
per reel.
PATENTED
ORDERING INFORMATION:
Catalog
Number
473.375
473.500
473.750
473
001
473
01.5
473
002
473
2.25
473
02.5
473
003
473
03.5
473
004
473
005
473
007
Ampere
Rating
3/8
1/2
3/4
1
1
1
/
2
2
2
1
/
4
2
1
/
2
3
3
1
/
2
4
5
7
Voltage
Rating
125
125
125
125
125
125
125
125
125
125
125
125
125
Nominal
Resistance
Cold Ohms
1.74
1.13
0.460
0.267
0.117
0.0730
0.0630
0.0520
0.0380
0.0240
0.0194
0.0133
0.0092
Nominal
Melting I
2
t
A
2
Sec.
0.0850
0.210
0.760
2.01
3.94
7.60
9.28
13.0
21.0
26.8
35.0
54.8
105.0
1.5"
.280"
REF.
1.5"
.125" DIA. REF.
F
L
.025" DIA.
1A
Average Time Current Curves
.375A
.50A
.75A
1.0A
1.5A
2.0A
2.5A
3.0A
3.5A
4.0A
5.0A
7.0A
1000
100
TIME IN SECONDS
10
1
0.1
0.01
0.1
1
10
100
CURRENT IN AMPERES
1000
33
LITTELFUSE [ LITTELFUSE ]
