Datasheet

ManualsBrandsLittelfuse ManualsAxial Miniature FusesAxial Fuse, 250mA, 125V

Speciﬁcations are subject to change without notice.

Revised: 05/31/18

Axial Lead & Cartridge Fuses

PICO

ll > Very Fast-Acting Fuse > 251/253 Series

251/253 Series, PICO

II Very Fast-Acting Fuse

Description

The PICO

II Very Fast-Acting Fuse is designed to meet an

extensive array of performance characteristics in a

space-saving subminiature package.

Agency Approvals

Features

Electrical Characteristics for Series

% of Ampere

Rating

Ampere Rating Opening Time

100% 0.062A - 15A 4 Hours, Min.

200%

0.062A - 7A 1 Second, Max.

10A 3 Seconds, Max.

12 - 15A 10 Seconds, Max.

275%

0.500A, 1A, 2A,

2.5A, 3A, 4A, 5A,

7A, 10A

300 msecs., Max.

400%

0.5A, 1A, 2A, 2.5A,

3A, 4A, 5A, 7A, 10A

30 msecs., Max.

1000%

0.500A, 1A, 2A,

2.5A, 3A, 4A, 5A,

7A, 10A

4 msecs., Max.

Applications

• Flat–panel display TV

• LCD monitor

• LCD backlight inverter

• Ofﬁce machines

• Power supply

• Audio/Video system

• Lighting system

• Medical equipment

Secondary protection for space constrained applications

QPL

• Very fast-acting

• Small size

• Wide current rating range

(0.062A- 15A)

• Halogen-free available

• Wide operating

temperature range

• Low temperature re-rating

Application testing is strongly recommended.

Agency

Agency File Number

Ampere Range

253 Series 251 Series

E10480 0.062A - 15A

29862

0.062A - 15A

PSE_NBK200416-JP1021

1A - 5A

J50158379

0.500A - 10A

FM10

N/A

0.062A - 15A

2009010207366577

0.500A, 1A, 2A,

2.5A, 3A, 4A, 5A

Note: See Electrical Speciﬁcations by Item table for speciﬁc approved ratings.

Additional Information

Datasheet

Samples

Resources

Datasheet

Samples

Resources

251 Series

253 Series

251 Series

253 Series

251 Series

253 Series

Summary of content (4 pages)

PAGE 1
Axial Lead & Cartridge Fuses PICO® ll > Very Fast-Acting Fuse > 251/253 Series 251/253 Series, PICO® II Very Fast-Acting Fuse PS E QPL Description The PICO® II Very Fast-Acting Fuse is designed to meet an extensive array of performance characteristics in a space-saving subminiature package. Features • Very fast-acting • Halogen-free available • Small size • Wide operating temperature range • Wide current rating range (0.
PAGE 2
Axial Lead & Cartridge Fuses PICO® ll > Very Fast-Acting Fuse > 251/253 Series Electrical Specifications by Item Agency Approvals Nom Max Nominal Ampere Nominal Ordering Ordering Voltage Amp Voltage Interrupting Cold Rating Melting Number Number Drop Code Rating Rating Resistance 2 (A) I t (A2 sec) (Std.) (Mil.) (V) (V) (Ohms) .062 .125 .200 .250 .375 .500 .630 .750 1.00 1.25 1.50 2.00 2.50 3.00 3.50 4.00 5.00 7.00 10.0 12.0 15.0 .062 .125 .200 .250 .375 .500 .630 .750 001. 1.25 01.5 002. 02.5 003. 03.
PAGE 3
Axial Lead & Cartridge Fuses PICO® ll > Very Fast-Acting Fuse > 251/253 Series .250A .375A .500A .630A .750A 1A 1.25A 1.5A 2A 2.5A 3A 3.5A 4A 5A 7A 10A 12A 15A 100 .125A Average Time Current Curves .062A Temperature Re-rating Curve TIME IN SECONDS 10 1 0.1 Note: 1. Re-rating depicted in this curve is in addition to the standard derating of 25% for continuous operation. 0.01 Soldering Parameters Recommended Process Parameters: Wave Parameter Lead-Free Recommendation for 251 Series only 0.001 0.
PAGE 4
Axial Lead & Cartridge Fuses PICO® ll > Very Fast-Acting Fuse > 251/253 Series Product Characteristics Materials Encapsulated, Epoxy-coated Body 251 Series: Pure tin-coated copper wire leads 253 Series: Solder-coated copper wire leads Solderability MIL-STD-202, Method 208 Lead Pull Force MIL-STD-202, Method 211, Test Condition A (will withstand a 7lbs.