Equivalent & Substitute Parts for 0452007.MRSN

Part Overview

The 0452007.MRSN is a 7 A, 72 V AC surface mount board fuse manufactured by Littelfuse Inc. as part of the NANO²® 452 series. This fuse is designed for circuit protection in applications requiring slow-blow response characteristics with a 2-SMD, square end block package configuration. The part is currently active in production with full inventory availability. Substitute parts are identified to provide alternative packaging options, voltage rating configurations, and series variants while maintaining electrical and mechanical compatibility for board mount fuse applications.

Substiute Parts

0452007.MRSN

Littelfuse Inc.In Stock: 20050452007.MRSN Datasheet

Current PartRFQ

0452007.MRL

Littelfuse Inc.In Stock: 202530452007.MRL Datasheet

Parametric EquivalentRFQ

0452007.NRL

Littelfuse Inc.In Stock: 96240452007.NRL Datasheet

Parametric EquivalentRFQ

0454007.MR

Littelfuse Inc.In Stock: 23400454007.MR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0452007.MRSN is determined by the following critical parameters:

Electrical Parameters (Must Match):

• Current Rating: 7 A
• Voltage Rating - AC: 72 V
• Response Time: Slow Blow
• Breaking Capacity @ Rated Voltage: 50 A
• Melting I²t: 123.83

Mechanical Parameters (Must Match):

• Package / Case: 2-SMD, Square End Block
• Mounting Type: Surface Mount
• Size / Dimension: 0.240" L x 0.106" W x 0.106" H (6.10mm x 2.69mm x 2.69mm)

Variable Parameters (Allowed to Differ):

• Packaging format (Tape & Reel vs. Cut Tape & Digi-Reel®)
• DC Voltage Rating (when not specified in main part)
• Series designation (NANO²® 452 vs. NANO²® 454)
• Approval Agency certifications (CSA/UR vs. CSA/UL)
• REACH compliance status

All identified substitutes maintain identical electrical performance and physical form factor, ensuring direct board-level compatibility.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain full electrical and mechanical equivalence to the 0452007.MRSN. Selection among these alternatives is based on packaging requirements and regulatory compliance:

0452007.MRL provides an alternative packaging format in Cut Tape (CT) & Digi-Reel® configuration while maintaining identical electrical specifications and REACH Unaffected status. This option is suitable for applications requiring smaller quantity tape formats.

0452007.NRL offers Tape & Reel (TR) packaging identical to the main part but carries REACH Affected status. This variant is appropriate for applications where REACH compliance documentation is not a constraint.

0454007.MR represents a series variant from the NANO²® 454 line with CSA/UL certification instead of CSA/UR. This part maintains all electrical and mechanical parameters while offering alternative approval agency recognition. REACH Unaffected status is maintained.

All parts are active products with current manufacturing status and full inventory availability.

Frequently Asked Questions (FAQ)

Q: Can 0452007.MRL be used as a direct replacement for 0452007.MRSN?

A: Yes. Both parts share identical electrical ratings (7 A, 72 V AC), response time (Slow Blow), breaking capacity (50 A), and physical dimensions (0.240" L x 0.106" W x 0.106" H). The difference is packaging format: 0452007.MRL uses Cut Tape (CT) & Digi-Reel® while 0452007.MRSN uses Tape & Reel (TR). Board-level performance is equivalent.

Q: What is the difference between 0452007.NRL and 0452007.MRSN?

A: Electrical and mechanical specifications are identical. The primary difference is REACH compliance status: 0452007.MRSN is REACH Unaffected while 0452007.NRL is REACH Affected. Both use Tape & Reel (TR) packaging. Selection depends on regulatory requirements for your application region.

Q: Why does 0454007.MR have a different series designation?

A: 0454007.MR belongs to the NANO²® 454 series rather than NANO²® 452. Despite the series difference, all electrical parameters (7 A, 72 V AC, 50 A breaking capacity, 123.83 I²t) and physical dimensions remain identical. The approval agency differs (CSA/UL vs. CSA/UR), which may be relevant for specific certification requirements.

Q: Are all substitute parts suitable for the same operating temperature range?

A: Yes. All parts operate across -55°C to 125°C, ensuring thermal compatibility across all identified substitutes.

Q: What packaging considerations should I evaluate when selecting a substitute?

A: The main part (0452007.MRSN) and 0452007.NRL use standard Tape & Reel (TR) format. The 0452007.MRL variant uses Cut Tape (CT) & Digi-Reel® format, which may be preferred for lower-volume applications or specific assembly line requirements. 0454007.MR also uses Tape & Reel (TR) format. Verify your assembly equipment compatibility with the selected packaging format.

Q: Do all substitutes maintain the same DC cold resistance?

A: Yes. All parts, including the main part and all substitutes, maintain 0.0105 Ohms DC cold resistance, ensuring consistent electrical behavior in circuit applications.