SURFACE MOUNT FUSES
SUBMINIATURE SURFACE MOUNT
PICO
®
SMF
Very Fast-Acting Type Fuse 459 Series
The PICO
®
SMF Very Fast-Acting Fuse provides high per-
formance in a rectangular package suitable for reflow and
wave soldering methods.
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. Approved by METI 1 through 5 amperes.
AGENCY FILE NUMBERS:
UL E10480, CSA LR 29862.
INTERRUPTING RATINGS:
50 amperes at 125 VAC.
300 amperes at 125 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,
.06 in. total excursion).
Salt Spray:
MIL-STD-202, Method 101, Test Condition B
(48 hrs.).
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 F (10 sec. at 260°C).
Thermal Shock:
MIL-STD-202, Method 107,
Test Condition B (–65 to 125°C).
Moisture Resistance:
MIL-STD-202, Method 106, High
Humidity (90-98 RH), Heat (65°).
PHYSICAL SPECIFICATIONS:
Materials:
Body: Molded Thermoplastic
Terminations: Tin-Lead Plated Copper
Soldering Parameters:
Wave Solder — 260°C, 10 seconds maximum
Reflow Solder — 260°C, 30 seconds maximum
Solderability:
MIL-STD-202, Method 208.
PACKAGING SPECIFICATIONS:
12mm Tape and Reel
per EIA-RS481 (IEC 286, part 3); 500 per reel, add
packaging suffix, UR.
PATENTED
ORDERING INFORMATION:
Catalog
Number
R459.062
R459.125
R459.250
R459.375
R459.500
R459.750
R459
001
R459
01.5
R459
002
R459
02.5
R459
003
R459
03.5
R459
004
R459
005
Ampere
Rating
1/16
1/8
1/4
3/8
1/2
3/4
1
1
1
/
2
2
2
1
/
2
3
3
1
/
2
4
5
Voltage
Rating
125
125
125
125
125
125
125
125
125
125
125
125
125
125
Nominal
Resistance
Cold Ohms
7.0
1.70
0.665
0.395
0.280
0.175
0.125
0.0800
0.0468
0.0350
0.0290
0.0240
0.0200
0.0155
Nominal
Melting I
2
t
A
2
Sec.
0.000075
0.00163
0.0106
0.0254
0.0546
0.155
0.281
0.650
0.421
0.721
1.23
1.65
2.35
3.90
5A
F
L
®
®
1 25 V
45 9
B3
.170"
.325"
.080"
.065"
.285"
REF.
.120"
.117"
.195"
RECOMMENDED
PAD LAYOUT
.051"
REF.
Average Time Current Curves
1/4A
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
0.001
0.05 0.1
1/8A
100
36
LITTELFUSE [ LITTELFUSE ]
