Axial Lead and Cartridge Fuses
450
www.littelfuse.com
Designed to UL/CSA Standards
5 x 20 mm Time Lag Fuse (Slo-Blo
®
) Fuse 239 Series
ELECTRICAL CHARACTERISTICS:
% of Ampere Opening
Rating Time
100% 4 hours, Minimum
135% 1 hour, Maximum
200% 5 seconds, Min.; 2 min., Max.
INTERRUPTING RATING:
0.20-1A 10,000 amperes at 125 VAC, 0.7-0.8 power factor
35 amperes at 250 VAC, 0.7-0.8 power factor
1.25A-3.15A 10,000 amperes at 125 VAC, 0.7-0.8 power factor
100 amperes at 250 VAC, 0.7-0.8 power factor
4A-7A 10,000 amperes at 125 VAC, 0.7-0.8 power factor
ORDERING INFORMATION:
• Designed to UL/CSA/ANCE 248 Standard.
• Available in Cartridge and Axial Lead Format.
• Available in ratings of 0.200 to 7 amperes.
Nominal Nominal
Catalog Ampere Voltage Resistance Melting I
2
t
Number Rating Rating Cold Ohms A
2
Sec.
239.200 .200 250 3.873 0.166
239.250 .250 250 3.070 0.341
239.300 .300 250 2.300 0.613
239.400 .400 250 1.475 1.490
239.500 .500 250 0.909 1.986
239.600 .600 250 0.699 2.415
239.700 .700 250 0.538 4.119
239.750 .750 250 0.471 5.424
239.800 .800 250 0.416 7.566
239 001 1 250 0.297 11.296
239 1.25 1.25 250 0.298 19.524
239 01.6 1.60 250 0.120 30.430
239 002 2 250 0.094 50.586
239 02.5 2.50 250 0.058 79.701
239 003 3 250 0.0480 129.509
239 3.15 3.15 250 0.0410 128.048
239 004 4 125 0.0310 270.703
239 005 5 125 0.0200 302.836
239 007 7 125 0.0110 305.758
ENVIRONMENTAL SPECIFICATIONS:
Operating temperature: -55˚C to 125˚C
Thermal Shock: MIL-STD-202F Method 107G, Test Condition B: (5
cycles –65°C to +125°C)
Vibration: MIL-STD-202F Method 201A
Humidity: MIL-STD-202F Method 103B, Test Condition A. high relative
humidity (95%) and elevated temperature (40°C) for 240 hours.
Salt Spray: MIL-STD-202F Method 101D, Test Condition B
PHYSICAL SPECIFICATIONS:
Material: Body: Glass
Cap: Nickel Plated Brass
Leads: Tin Plated Copper
Terminal Strength: MIL-STD-202F Method 211A,
Test Condition A
Solderability: Reference IEC 60127 Second Edition 2003-01 Annex A
Product Marking: Cap 1: current and voltage rating.
Cap 2: Agency approval markings.
Packaging: Available in Bulk (V=5, H=100, M=1000 pcs/pkg) or on
Tape/Reel (MRET1=1000 pcs/reel).
