047201.5MRT1L Equivalent & Substitute Parts

Part Overview

The 047201.5MRT1L is a 1.5 A board mount axial fuse rated for 125 V AC/DC operation, manufactured by Littelfuse Inc. as part of the PICO® II 472 series. This fuse is designed for through-hole mounting applications requiring slow-blow response characteristics. The part is currently active in production with 1011 pieces available in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity when the primary part number becomes unavailable or when alternative packaging formats are required.

Substiute Parts

047201.5MRT1L

Littelfuse Inc.In Stock: 1029047201.5MRT1L Datasheet

Current PartRFQ

047101.5MAT1L

Littelfuse Inc.In Stock: 2094047101.5MAT1L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The 047101.5MAT1L qualifies as a parametric equivalent to the 047201.5MRT1L based on the following critical electrical and mechanical parameters:

Matching Parameters:

• Current Rating: 1.5 A
• Voltage Rating (AC/DC): 125 V
• Response Time: Slow Blow
• Mounting Type: Through Hole
• Fuse Type: Board Mount (Cartridge Style Excluded)
• Package / Case: Axial
• Breaking Capacity @ Rated Voltage: 50 A
• Operating Temperature Range: -55°C ~ 125°C
• Physical Dimensions: 0.110" Dia x 0.280" L (2.80mm x 7.11mm)
• RoHS Status: ROHS3 Compliant

Differentiating Factors:

• Packaging format: 047201.5MRT1L supplied in Tape & Reel (TR); 047101.5MAT1L supplied in Cut Tape (CT)
• Series designation: PICO® II 472 versus PICO® II 471
• Melting I²t: 2.4081 versus 1.61
• DC Cold Resistance: 0.039 Ohms versus 0.054 Ohms
• Approval agencies: UR versus CSA, PSE, UR

The substitute part maintains electrical and mechanical compatibility for direct functional replacement in through-hole board mount applications.

Parameter Comparison

Engineering Selection Recommendations

Both parts maintain active product status and ROHS3 compliance. The 047101.5MAT1L provides broader regulatory approval coverage with CSA and PSE certifications in addition to UR approval. Selection between these parts should be based on packaging requirements: the 047201.5MRT1L is appropriate for high-volume automated assembly using tape and reel format, while the 047101.5MAT1L accommodates cut tape handling for lower-volume or manual assembly processes. The electrical and mechanical parameters are equivalent for direct functional substitution in 1.5 A, 125 V AC/DC through-hole fuse applications.

Frequently Asked Questions (FAQ)

Q: Can 047101.5MAT1L be used as a direct replacement for 047201.5MRT1L?

A: Yes. Both parts share identical electrical ratings (1.5 A, 125 V AC/DC), response time (Slow Blow), mounting configuration (Through Hole), physical dimensions (0.110" Dia x 0.280" L), and breaking capacity (50 A). The primary difference is packaging format: Tape & Reel versus Cut Tape.

Q: What is the significance of the different Melting I²t values?

A: The Melting I²t values (2.4081 for 047201.5MRT1L and 1.61 for 047101.5MAT1L) represent thermal energy characteristics. Both parts are rated for the same 1.5 A current and voltage specifications, and both are classified as Slow Blow response fuses suitable for the same application category.

Q: Does the packaging format affect electrical performance?

A: No. Tape & Reel (TR) and Cut Tape (CT) packaging formats are handling and assembly methods only. They do not affect the electrical or mechanical performance of the fuse component itself.

Q: Are there regulatory compliance differences between these parts?

A: The 047101.5MAT1L carries CSA and PSE approvals in addition to UR certification, while 047201.5MRT1L carries UR approval. Both are ROHS3 compliant and REACH unaffected. Selection should align with regional regulatory requirements for your application.

Q: Can these parts be used interchangeably in existing designs?

A: Yes, provided the assembly process accommodates the packaging format. Designs using automated tape and reel assembly should use 047201.5MRT1L. Designs using manual or cut tape assembly should use 047101.5MAT1L. Electrical and mechanical compatibility is maintained across both parts.