Equivalent & Substitute Parts for 0472002.NRT1L

Part Overview

The 0472002.NRT1L is a 2 A, 125 V AC/DC board mount axial fuse manufactured by Littelfuse Inc. as part of the PICO® II 472 series. This through-hole component is designed for circuit protection in applications requiring slow-blow response characteristics. The part is currently active in production with ROHS3 compliance and UR approval agency certification. Substitute parts may be required due to packaging availability, inventory constraints, or specific application requirements for alternative packaging formats or series variants.

Substiute Parts

0472002.NRT1L

Littelfuse Inc.In Stock: 9510472002.NRT1L Datasheet

Current PartRFQ

0471002.NRT1L

Littelfuse Inc.In Stock: 29020471002.NRT1L Datasheet

Parametric EquivalentRFQ

0472002.MRT1L

Littelfuse Inc.In Stock: 26480472002.MRT1L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0472002.NRT1L is determined by the following critical parameters:

Electrical Parameters (Non-Negotiable):

• Current Rating: 2 A
• Voltage Rating (AC/DC): 125 V
• Response Time: Slow Blow
• Breaking Capacity: 50 A

Mechanical Parameters (Non-Negotiable):

• Mounting Type: Through Hole
• Fuse Type: Board Mount (Cartridge Style Excluded)
• Package / Case: Axial
• Physical Dimensions: 0.110" Dia x 0.280" L (2.80mm x 7.11mm)

Variable Parameters (Allowed to Differ):

• Packaging Format (Tape & Reel vs. Cut Tape)
• Series Designation (PICO® II 471 vs. PICO® II 472)
• DC Cold Resistance (within functional tolerance)
• Melting I²t (within functional tolerance)
• Approval Agency certifications

The substitute parts 0471002.NRT1L and 0472002.MRT1L meet all electrical and mechanical requirements while differing only in packaging format and minor thermal characteristics.

Parameter Comparison

Engineering Selection Recommendations

All three parts are active products with ROHS3 compliance and meet identical electrical and mechanical specifications for circuit protection applications. Selection between 0472002.NRT1L, 0471002.NRT1L, and 0472002.MRT1L should be based on the following criteria:

0472002.NRT1L (Primary Specification): Select when Tape & Reel packaging is required for automated assembly processes. UR approval agency certification applies.

0471002.NRT1L (Alternative): Select when Cut Tape packaging is acceptable and additional certifications (CSA, PSE) are beneficial for specific regional or application requirements. Note the Melting I²t value of 2.5 differs from the primary part.

0472002.MRT1L (Alternative): Select when Cut Tape packaging is required with matching thermal characteristics (Melting I²t: 4.2363) to the primary specification. UR approval agency certification applies.

All substitute parts maintain identical current rating, voltage rating, response time, mounting type, and physical dimensions, ensuring direct functional equivalence in circuit protection applications.

Frequently Asked Questions (FAQ)

Q: Can 0471002.NRT1L be used as a direct replacement for 0472002.NRT1L?

A: Yes, from an electrical and mechanical standpoint. Both parts share identical current rating (2 A), voltage rating (125 V AC/DC), response time (Slow Blow), and physical dimensions (0.110" Dia x 0.280" L). The primary difference is packaging format (Cut Tape vs. Tape & Reel) and Melting I²t value (2.5 vs. 4.2363). Verify application requirements for thermal response characteristics before substitution.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging is used for high-volume automated assembly processes where components are fed directly into pick-and-place machines. Cut Tape (CT) packaging provides individual component strips suitable for lower-volume manual assembly or mixed-component applications. Both formats contain identical components with the same electrical specifications.

Q: Are there any approval agency differences between these parts?

A: Yes. The 0472002.NRT1L and 0472002.MRT1L carry UR approval. The 0471002.NRT1L carries CSA, PSE, and UR approvals. If your application requires specific regional certifications (CSA for North America, PSE for Japan), the 0471002.NRT1L provides broader compliance coverage.

Q: Does DC Cold Resistance affect substitution eligibility?

A: DC Cold Resistance values (0.027 Ohms for 0472002.NRT1L and 0472002.MRT1L; 0.039 Ohms for 0471002.NRT1L) represent minor variations within the same component class. These differences do not affect circuit protection function or compatibility in standard applications. Verify application-specific resistance requirements if present.

Q: Can these parts be used interchangeably in production?

A: Yes, provided your assembly process accommodates the packaging format. If your production line uses automated Tape & Reel feeding, use 0472002.NRT1L or 0472002.MRT1L. If manual assembly or mixed-format feeding is used, Cut Tape variants (0471002.NRT1L or 0472002.MRT1L) are suitable. All parts meet identical electrical specifications for circuit protection.