0251.062HAT1L_15 LITTELFUSE | Alldatasheet

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Technical content

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% 0.05A, 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

E

  • 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. Additional Information Datasheet SamplesResources Datasheet SamplesResources

251 Series

253 Series

© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/11/15 Axial Lead & Cartridge Fuses PICO® ll > Very Fast-Acting Fuse > 251/253 Series Electrical Specifications by Item Note: Higher ampere ratings are available. Please contact Littelfuse Technical Support or your Littelfuse products representative for assistance. Ampere Rating (A) Amp Code Ordering Number (Std.) Ordering Number (Mil.) Max Voltage Rating (V) Interrupting Rating Nominal Cold Resistance (Ohms) Nominal Melting I2t (A2 sec) Nom Voltage Drop (V) Agency Approvals PS E TUV QPL .062 .062 251 .062 253.062 125

300 A @

50A@125VAC For CCC 7A: 70A@125VAC For CCC 10A: 100A@ 125VAC 7 .000 0.000113 1. 4 x x x 300A@32VDC & 50A@32VAC

© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/11/15 Axial Lead & Cartridge Fuses PICO® ll > Very Fast-Acting Fuse > 251/253 Series Average Time Current Curves Soldering Parameters 100 0.1 0.01 0.001 .062A 0.05 0.1 11 01 00 1000 .125A .250A .375A .500A .750A .630A 1.5A 2.5A 3.5A 10A 12A 15A TIME IN SECONDS CURRENT IN AMPERES 1.25A Recommended Hand Soldering 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: Note: 1 . Re-rating depicted in this curve is in addition to the standard derating of 25% for continuous operation. T emperature Re-rating Curve Wave Parameter Lead-Free Recommendation for 251 Series only 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

© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/11/15 Axial Lead & Cartridge Fuses PICO® ll > Very Fast-Acting Fuse > 251/253 Series Materials Encapsulated, Epoxy-Coated Body: Pure Tin-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. axial pull test) Fuses T o MIL SPEC For fuses to MIL -PRF-23419, FM10 change the series number from 251 to 253 Operating Temperature –55ºC to +125ºC (Consider re-rating) Product Characteristics Vibration MIL -STD-202, Method 201 (10–55 Hz); Method 204, Test Condition C (55–2000 Hz at 10 G’s Peak) Shock MIL -STD-202, Method 213, Test Condition I (100 G’s peak for 6 msecs.) Insulation Resistance (After Opening): MIL -STD-202, Method 302, Test Condition A (10,000 ohms minimum at 100 volts) Moisture Resistance MIL -STD-202, Method 106 Resistance to Soldering Heat Withstands 60 seconds above 200 OC and up to 260ºC, maximum Flammability Rating UL 94V–0 Dimensions Packaging Part Numbering System Packaging Option Packaging Specification Quantity & Packaging Code *T1: 52.4mm (2.062") Tape and Reel EIA 296 Please refer to available quantities above in "Part Numbering System” **T3: 73mm (2.87 4') Tape and Reel EIA 296 0251 xxxx N R T1 Lead Length Type of Packaging Quantity Current Rating Series The default lead length for Ammo pack and Loose pack is now T1 for 251 series, and remains T3 for 253 series, therefore: T1 = 52.4mm (2.062”), 251 series only* Blank = 52.4mm (2.062”) for 251 series* or 73mm (2.874”) for 253 series** R = Reel A = Ammo Pack X = Loose Pack N = 5000 P = 2000 M = 1000 H = 100 Refer to Amp Code column of Electrical Specifications Table 251 = Standard type 253 = Military type Option Codes L L = RoHS + HF (Only applies to 251 Series) The default lead length for both ammo pack and loose pack is T1 for 251 and is T3 for 253. Wire Diameter: 0.81 (.032") for 15 amp Wire Diameter: 0.81 (.032") for 12-15 amp 2.61 (.103") MAX 6.35 (.25") tape tape 38.1 (1.5") 38.1 (1.5")7.11 (.280") 83.31 (3.28")

253 Series Markings

(T3 lead length) L 1 A L 1 A 73.0 (2.874")** L 1 A FL1 A 27.78 (1.094") 27.78 62.7 (2.468") 52.4 (2.062")* 2.80 (.11") MAX 6.35 (.25") tape tape

251 Series (Halogen-free Version) Markings

(T1 lead length) Wire Diameter: 0.81 (.032") for 12-15 amp FL1 A FL1 A 27.78 (1.094") 27.78 62.7 (2.468") 52.4 (2.062")* 2.80 (.11") MAX 6.35 (.25") tape tape

251 Series Markings

(T1 lead length) F F F