Introduction to Circuit Protection
Introduction to Circuit Protection
Transientology
© 2012 Littelfuse, Inc.
Specifications are subject to change without notice.
Surface Mount Fuses
460 Series
PICO
®
SMF Fuse > 460 Series
Please refer to www.littelfuse.com/series/460.html for current information.
Materials
Body: Molded Thermoplastic
Terminations: 100% Tin-plated Copper
(460 Series)
Solderability MIL-STD-202, Method 208
Product Marking
Body: Brand Logo, Current Rating, Voltage
Rating, Series Code, Date Code, Agency
Approved Logo
Moisture
Sensitivity Level
Level 1 J-STD - 020C
Operating
Temperature
–55°C to 125°C
Product Characteristics
Shock
MIL-STD-202, Method 213, Test
Condition I (100 G’s peak for 6 msecs.)
Vibration
MIL-STD-202, Method 201 (10–55 Hz,
0.06 inch total excursion)
Salt Spray
MIL-STD-202, Method 101, Test
Condition B (48 hours)
Insulation Resistance
(After Opening)
MIL-STD-202, Method 302, (10,000
ohms minimum at 100 volts)
Thermal Shock
MIL-STD-202, Method 107,
Test Condition B (–65°C to 125°C)
Moisture Resistance
MIL-STD-202, Method 106, High
Humidity (90-98 RH), Heat (65°C)
Average Time Current Curves
1000
100
10
1
0.1
0.01
10
CURRENT IN AMPERES
TIME IN SECONDS
1000100
0.1
1
0.05
5A
4A
3.5A
3A
2.5A
2A
1.5A
1A
.750A
.500A
.375A
Soldering Parameters
Temperature Rerating Curve
/PUF
1. Rerating depicted in this curve is in addition to the standard rerating of 25% for
continuous operation.
Wave Soldering 260°C, 3 seconds max.
Reflow Soldering 230°C, 30 seconds max.
