Littelfuse 508 Series - Manual (Page 2)

© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
Axial Lead & Cartridge Fuses
3AB 1000Vac/DC High Voltage Fuse
Product Characteristics
Materials
Body : Ceramic
Cap : Nickel–plated brass
Leads : Tin-plated Copper
Terminal Strength
MIL-STD-202G, Method 211A,
Test Condition A
Solderability
Reference IEC 60127 Second Edition
2003-01 Annex A
Product Marking
Cap1 : Brand logo, current and voltage
ratings
Cap2 : Series and agency approval marks
Operating
Temperature: –55ºC to 125ºC.
Thermal
Shock: MIL-STD-202G, Method 107G, Test Condition B
(5 Cycles -65ºC to +125ºC).
Vibration MIL-STD-202G, Method 201A
Humidity MIL-STD-202G, Method 103B, Test Condition
A: High relative humidity (95%) and elevated
temp (40ºC) for 240 hours
Salt Spray MIL-STD-202G, Method 101E, Test Condition B
Average Time Current Curves Temperature Rerating Curve
Soldering Parameters - Wave Soldering
Dwell Time
0
20
40
60
80
100
120
140
160
180
200
220
240
260
280
300
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240
Time (Seconds)
Temperature (°C) - Measured on bottom side of board
Cooling Time Preheat Time
Wave parameter lead-Free Recommendation
preheat:
(Depends on Flux Activation Temperature) (Typical Industry Recommendation)
Temperature Minimum: 100 ° C
Temperature Maximum: 150 ° C
Preheat Time: 60-180 seconds
Solder pot Temperature: 260 ° C Maximum
Solder Dwell Time: 2-5 seconds
Recommended Hand-Solder Parameters:
Solder Iron Temperature: 350° C +/- 5°C
Heating Time: 5 seconds max.
Note: These devices are not recommended for IR or
Convection Reflow process.
Recommended Process Parameters:
0.001
0.01
0.1
1
10
100
1000
10000
0.01 0.1 1 10 100
Ti
me (seconds)
Amps
508.315 508.500 508001