Littelfuse 0465002.DR Surface Mount Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0465002.DR is a 2A 250VAC surface mount board fuse in the NANO²® 465 series, designed for electronic circuit protection in industrial and electrical applications. This fuse features slow-blow response characteristics and is housed in a 2-SMD square end block package. The part is currently active in production with 16,514 units in stock. Substitute parts may be required due to supply constraints, regional availability, or specific application requirements while maintaining equivalent electrical and mechanical performance.

Substiute Parts

0465002.DR

Littelfuse Inc.In Stock: 166040465002.DR Datasheet

Current PartRFQ

TR-1245UMFT2-R

Eaton - Electronics DivisionIn Stock: 4988TR-1245UMFT2-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Littelfuse 0465002.DR are qualified based on the following critical parameters that determine functional equivalence:

• Current Rating: 2 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Response Time: Slow Blow (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Package / Case: 2-SMD, Square End Block (exact match required)
• Breaking Capacity @ Rated Voltage: 100 A (exact match required)
• Physical Dimensions: 0.476" L x 0.177" W x 0.177" H (exact match required)

The Eaton TR-1245UMFT2-R meets all critical substitution criteria and is classified as a manufacturer-recommended equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the Littelfuse 0465002.DR and Eaton TR-1245UMFT2-R are active production components with ROHS3 compliance and MSL 1 ratings, indicating suitability for standard surface mount assembly processes without moisture sensitivity constraints.

The Littelfuse part carries PSE and UMF approvals, while the Eaton substitute carries cURus certification. Both parts meet the 100A breaking capacity requirement and are packaged in identical 2-SMD square end block configurations with matching physical dimensions.

The operating temperature range of the Littelfuse part extends to -55°C, providing a 15°C lower minimum operating temperature compared to the Eaton substitute. The DC cold resistance and melting I²t values differ slightly between the two parts but remain within acceptable tolerance for equivalent slow-blow fuse operation at the specified 2A 250VAC rating.

Frequently Asked Questions (FAQ)

Q: Can the Eaton TR-1245UMFT2-R be used as a direct replacement for the Littelfuse 0465002.DR?

A: Yes. Both parts share identical current rating (2A), voltage rating (250VAC), response time (slow blow), mounting type (surface mount), package configuration (2-SMD square end block), and physical dimensions (12.10mm x 4.50mm x 4.50mm). Both are active production components with equivalent breaking capacity (100A) and RoHS3 compliance.

Q: What are the differences between these two fuses?

A: The primary differences are the operating temperature minimum (-55°C for Littelfuse versus -40°C for Eaton), DC cold resistance (0.039 Ohms versus 0.042 Ohms), melting I²t (14.9 versus 11), and approval certifications (PSE/UMF versus cURus). These differences do not affect substitution eligibility for standard applications.

Q: Are both parts available in the same packaging format?

A: Yes. Both the Littelfuse 0465002.DR and Eaton TR-1245UMFT2-R are supplied in Tape & Reel (TR) packaging, suitable for automated surface mount assembly processes.

Q: What is the significance of the melting I²t rating difference?

A: The melting I²t value indicates the thermal energy required to melt the fuse element. The Littelfuse part (14.9) has a higher melting I²t than the Eaton part (11), meaning it requires slightly more thermal energy to operate. Both values are within the acceptable range for 2A slow-blow fuses and do not prevent substitution.

Q: Which approval certifications apply to each part?

A: The Littelfuse 0465002.DR carries PSE and UMF approvals. The Eaton TR-1245UMFT2-R carries cURus certification. Selection should be based on regional regulatory requirements and application-specific compliance needs.