B5741-106-F-N-2 Equivalent & Substitute Parts

Part Overview

The B5741-106-F-N-2 is a 6-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 mating. This connector features gold-plated contacts, through-hole solder termination, and a locking ramp fastening mechanism. The part is currently obsolete, making identification of active equivalent components essential for ongoing production and maintenance applications.

Substiute Parts

B5741-106-F-N-2

Harwin Inc.In Stock: 1026B5741-106-F-N-2 Datasheet

Current PartRFQ

M80-8400645

Harwin Inc.In Stock: 1002M80-8400645 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The M80-8400645 qualifies as a direct substitute for the B5741-106-F-N-2 based on the following critical parameters:

• Connector Type & Contact Configuration: Both are 6-position receptacle connectors with female socket contacts
• Pitch Specification: Both maintain 0.079" (2.00mm) mating pitch
• Mounting & Termination: Both use through-hole solder termination with locking ramp fastening
• Contact Material & Finish: Both feature beryllium copper contacts with gold plating on mating surfaces
• Series Compatibility: Both belong to the Datamate L-Tek series
• Operating Temperature Range: Both rated -55°C ~ 125°C
• Flammability Rating: Both meet UL94 V-0 standard
• Environmental Compliance: Both are REACH Unaffected and classified as EAR99

The M80-8400645 represents an active production alternative to the obsolete B5741-106-F-N-2, maintaining functional and mechanical compatibility within the Datamate L-Tek connector family.

Parameter Comparison

Engineering Selection Recommendations

The M80-8400645 is the direct active equivalent for the obsolete B5741-106-F-N-2. Selection of the M80-8400645 is supported by:

• Product Status: The M80-8400645 maintains active production status, ensuring long-term availability and supply chain continuity
• Regulatory Compliance: The M80-8400645 achieves ROHS3 compliance, whereas the B5741-106-F-N-2 is RoHS non-compliant, making the substitute preferable for applications subject to RoHS requirements
• Mechanical Compatibility: Both connectors share identical mating pitch, mounting type, fastening mechanism, and contact configuration
• Electrical Performance: The M80-8400645 provides enhanced voltage rating (800V versus 120V), offering greater electrical margin for applications requiring higher voltage tolerance
• Contact Post Length: The M80-8400645 features a longer contact post (0.126" versus 0.051"), which may require PCB layout verification for through-hole depth compatibility
• Insulation Material: The M80-8400645 uses polyamide (PA46) nylon 4/6 glass-filled material versus polyester in the original part, providing improved thermal and mechanical properties

Frequently Asked Questions (FAQ)

Q: Can M80-8400645 be used as a direct replacement for B5741-106-F-N-2 in existing designs?

A: Yes, the M80-8400645 is mechanically and electrically compatible for direct substitution. The primary design consideration is the contact post length difference (0.126" versus 0.051"), which requires verification that PCB through-hole depth accommodates the longer post without interference.

Q: What is the significance of the voltage rating difference between these parts?

A: The B5741-106-F-N-2 is rated for 120V, while the M80-8400645 is rated for 800V. The M80-8400645 provides greater electrical margin and is suitable for applications requiring higher voltage tolerance. Applications operating at or below 120V are compatible with both parts.

Q: Are there packaging differences between these connectors?

A: The B5741-106-F-N-2 packaging is not specified in available data. The M80-8400645 is supplied in tube packaging. Confirm packaging requirements for your procurement and assembly processes.

Q: How do the insulation materials differ, and does this affect compatibility?

A: The B5741-106-F-N-2 uses polyester glass-filled insulation, while the M80-8400645 uses polyamide (PA46) nylon 4/6 glass-filled material. Both materials meet UL94 V-0 flammability requirements and operate across the same temperature range (-55°C ~ 125°C). The polyamide material in the M80-8400645 offers improved thermal stability and mechanical properties.

Q: What is the impact of RoHS compliance status?

A: The B5741-106-F-N-2 is RoHS non-compliant, while the M80-8400645 is ROHS3 compliant. For applications subject to RoHS regulations or customer requirements, the M80-8400645 is the required selection.

Q: Are both connectors suitable for automotive and military applications?

A: Yes, both the B5741-106-F-N-2 and M80-8400645 are specified for automotive, general purpose, and military applications. Both meet UL94 V-0 flammability standards and operate across the full military temperature range (-55°C ~ 125°C).