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Electronic Fuse Products Catalog

Electronic Fuse Products Catalog
409Pages

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Expertise Applied | Answers Delivered PRODUCT CATALOG & DESIGN GUIDE Circuit Protection Products and Mounting Accessories

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Littelfuse* Expertise Applied | Answers Delivered Fuse Characteristics, Terms and Consideration Factors Fuse Selection Checklist Standards Packaging and Part Numbering Legal Disclaimers Series Name Device Range 2 (Operating Current Options in Amps) Max. Voltage Rating 2 (Volts) Interrupting Rating at Max. Voltage Rating 2 (Amps) Operating Temperature Range Surface Mount: Ceramic Thin Film (1) Size for these surface mount items refers to common industry length and width dimensions of the device surface area. Example: 0402 = .04”x.02'' (2) In some cases for these categories the ratings,...

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Llttelfuse* Expertise Applied | Answers Delivered FUSE Circuit Protection Products and Mounting Accessories Device Range 2 (Operating Current Options in Amps) Operating Temperature Range Agency Approvals 2 Europe Circuit Board Mount Fuse Enclosures Circuit Board Mount Fuse Enclosures 0402 =.04"x.02" as ranges representing the whole series. Please refer to product (1) Size for these surface mount items refers to common industry length and width dimensions of the device surface area. Example: (2) In some cases for these categories the ratings, agency approvals and specifications vary by part...

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Llttelfuse* Expertise Applied | Answers Delivered FUSE Circuit Protection Products and Mounting Accessories Series Name Device Range 2 (Operating Current Options in Amps) Max. Voltage Rating 2 (Volts) Interrupting Rating at Max Voltage Rating 2 (Amps) RoHS Compliant Lead Free Axial Leaded / Cartridge: PICO / PICO II Axial (1) Size for these surface mount items refers to common industry length and width dimensions of the device surface area. Example: 0402 = .04”x.02” (2) In some cases for these categories the ratings, agency approvals and specifications vary by part number and are presented...

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Llttelfuse* Expertise Applied | Answers Delivered FUSE Circuit Protection Products and Mounting Accessories Fuseholder Type © 2017 Litltelfuse, Inc. Specifications, descriptions and illustrative material inthis iiterature are as accurate as known at the time of publication, Vat are suVjecno chonge without notice. Visit www.littelfuse.com for more ieformation.

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Littelfuse* Expertise Applied | Answers Delivered FUSE Circuit Protection Products and Mounting Accessories Fuseholder Type Fuse Clips Cartridge Fuse Blocks: Fuse Blocks In-Line Cartridge Fuse Holders In- Line Fuseholders 150 Device Range 2 (Operating Current Options in Amps) Max. Voltage Rating 1 2 (Volts) Interrupting Rating at Max Voltage Rating 2 (Amps) Operating Temperature Range Agency Approvals 2 Europe Special Application Fuses: 242 Size for these surface mount items refers to common industry length and width dimensions of the device surface area. Example: 0402 = .04”x.02” In some...

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FUSE Circuit Protection Products and Mounting Accessories Fuse Characteristics, Terms and Consideration Factors The purpose of this introductory section is to promote a better understanding of both fuses and common application details within circuit design. small variations from the controlled test conditions can greatly affect the predicted life of a fuse when it is loaded to its nominal value, usually expressed as 100% of rating. The fuses to be considered are current sensitive devices designed to serve as the intentional weak link in the electrical circuit. Their function is to provide...

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Littelfuse* Expertise Applied | Answers Delivered Fuse Characteristics, Terms and Consideration Factors (continued) length or diameter dimensions of the glass fuses. Their designation was modified to AB in place of AG, indicating that the outer tube was constructed from Bakelite, fibre, ceramic, or a similar material other than glass. The largest size fuse shown in the chart is the 5AG, or "MIDGET," a name adopted from its use by the electrical industry and the National Electrical Code range which normally recognizes fuses of 9/16"x 2" as the smallest standard fuse in use. TOLERANCES: The...

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Expertise Applied | Answers Delivered FUSE Circuit Protection Products and Mounting Accessories Fuse Characteristics, Terms and Consideration Factors (continued) Lead-Free Soldering Parameters (most instances): Wave Solder — 260°C, 10 seconds max Reflow Solder — 260°C, 30 seconds max TEST SAMPLING PLAN: Beca use compliance with certain specifications requires destructive testing, these tests are selected on a statistical basis for each lot manufactured. TIME-CURRENT CURVE: The graphical presentation of the fusing characteristic, time-current curves are generally average curves which are...

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FUSE Circuit Protection Products and Mounting Accessories Fuse Selection Checklist The application guidelines and product data in this guide are intended to provide technical information that will help with application design. Since these are only a few of the contributing parameters, application testing is strongly recommended and should be used to verify performance in the circuit/application. Many of the factors involved with fuse selection are listed below. For additional assistance with choosing fuses appropriate to you requirements, contact your Littelfuse products reprentative.:...

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FUSE Circuit Protection Products and Mounting Accessories Fuse Selection Checklist (continued) 4. OVERLOAD CURRENT CONDITION: The current level for which protection is required. Fault conditions may be specified, either in terms of current or, in terms of both current and maximum time the fault can be tolerated before damage occurs. Time-current curves should be consulted to try to match the fuse characteristic to the circuit needs, while keeping in mind that the curves are based on average data. 5. MAXIMUM FAULT CURRENT: The Interrupting Rating of a fuse must meet or exceed the Maximum...

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FUSE Circuit Protection Products and Mounting Accessories Littelfuse* Expertise Applied | Answers Delivered Fuse Selection Checklist (cont.) conditions specified by Underwriters Laboratories. The primary objective of these UL test conditions is to specify common test standards necessary for the continued control of manufactured items intended for protection against fire, etc. A copper dummy fuse is inserted in the fuseholder by Underwriters Laboratories, and then the current is increased until a certain temperature rise occurs. The majority of the heat is produced by the contact resistance...

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