B5741-104-F-N-0 Equivalent & Substitute Parts

Part Overview

The B5741-104-F-N-0 is a 4-position receptacle connector from Harwin Inc.'s Datamate L-Tek series, designed for board-to-board or cable applications with 0.079" (2.00mm) pitch spacing. This connector features gold-plated mating contacts, through-hole solder termination, and a locking ramp fastening mechanism. The part is classified as obsolete, making identification of active equivalent alternatives essential for ongoing production and maintenance applications.

Substiute Parts

B5741-104-F-N-0

Harwin Inc.In Stock: 1219B5741-104-F-N-0 Datasheet

Current PartRFQ

M80-8400442

Harwin Inc.In Stock: 909M80-8400442 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The M80-8400442 qualifies as a direct substitute for the B5741-104-F-N-0 based on the following critical parameters:

• Connector Type & Configuration: Both are 4-position receptacle connectors within the Datamate L-Tek series
• Pitch Specification: Identical 0.079" (2.00mm) mating pitch ensures mechanical and electrical compatibility
• Mounting Method: Both utilize through-hole solder termination with locking ramp fastening
• Contact Material & Mating Surface: Both employ beryllium copper contacts with gold plating on mating surfaces
• Operating Temperature: Identical -55°C ~ 125°C range
• Flammability Rating: Both meet UL94 V-0 standard
• Environmental Compliance: Both carry REACH Unaffected and EAR99 ECCN classifications

The M80-8400442 represents an active production alternative to the obsolete B5741-104-F-N-0, with improved compliance status and enhanced electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

The M80-8400442 is the recommended substitute for the obsolete B5741-104-F-N-0. Key advantages include:

• Active Production Status: M80-8400442 is in active production, ensuring long-term availability and supply chain continuity
• Enhanced Compliance: M80-8400442 achieves ROHS3 compliance, whereas the original part is RoHS non-compliant
• Improved Electrical Rating: M80-8400442 provides 800V voltage rating compared to 120V in the original, offering greater design margin for applications requiring higher voltage tolerance
• Post Contact Finish: M80-8400442 features tin plating on post contacts, eliminating lead content and improving environmental compliance
• Insulation Material Upgrade: Polyamide (PA46) nylon 4/6 glass-filled insulation in M80-8400442 provides enhanced mechanical and thermal properties compared to polyester glass-filled material

Both parts maintain identical mechanical compatibility through matching pitch, mounting type, fastening mechanism, and mating contact specifications. The M80-8400442 is suitable for direct replacement in new designs and retrofit applications.

Frequently Asked Questions (FAQ)

Q: Are B5741-104-F-N-0 and M80-8400442 mechanically interchangeable?

A: Yes. Both connectors share identical 0.079" (2.00mm) pitch spacing, 4-position configuration, through-hole mounting, and locking ramp fastening. PCB footprints and mating interface dimensions are compatible.

Q: What are the electrical differences between these parts?

A: The M80-8400442 provides 800V voltage rating versus 120V for the B5741-104-F-N-0. Current rating is not specified for M80-8400442. Both maintain identical contact material (beryllium copper) and mating surface finish (gold plating at 12.0µin thickness).

Q: Why does M80-8400442 have a longer post contact length?

A: M80-8400442 features 0.126" (3.20mm) post contact length compared to 0.051" (1.30mm) in B5741-104-F-N-0. This longer engagement depth accommodates the mated stacking heights of 7.23mm and 7.83mm specified for M80-8400442, providing improved contact retention and electrical performance.

Q: What is the packaging difference?

A: B5741-104-F-N-0 packaging is not specified. M80-8400442 is supplied in tube packaging, which is standard for production quantities.

Q: Are there RoHS compliance implications for substitution?

A: Yes. B5741-104-F-N-0 is RoHS non-compliant, while M80-8400442 is ROHS3 compliant. Applications subject to RoHS regulations must use M80-8400442. The post contact finish change from tin-lead to tin eliminates lead content.

Q: Can M80-8400442 be used in applications originally designed for B5741-104-F-N-0?

A: Yes, provided the application does not require the specific 120V rating of the original part. The 800V rating of M80-8400442 is suitable for all applications within the original 120V specification. Verify that PCB layout accommodates the longer post contact length if retrofitting existing designs.