B5741-105-F-N-2 Equivalent & Substitute Parts

Part Overview

The B5741-105-F-N-2 is a 5-position receptacle connector from Harwin Inc.'s Datamate L-Tek series, designed for through-hole PCB mounting with 0.079" (2.00mm) pitch spacing. This connector features gold-plated contacts, solder termination, and a locking ramp fastening mechanism. The part is currently obsolete, making identification of compatible substitute components essential for ongoing system support, maintenance, and new production alternatives.

Substiute Parts

B5741-105-F-N-2

Harwin Inc.In Stock: 698B5741-105-F-N-2 Datasheet

Current PartRFQ

M80-8400545

Harwin Inc.In Stock: 1049M80-8400545 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The M80-8400545 qualifies as a direct substitute for the B5741-105-F-N-2 based on the following critical parameters:

• Connector Type & Position Count: Both are 5-position receptacle connectors
• Pitch Specification: Both maintain 0.079" (2.00mm) mating pitch
• Mounting Configuration: Both use through-hole PCB mounting with solder termination
• Contact Material & Finish: Both feature beryllium copper contacts with gold plating on mating surfaces
• Fastening Mechanism: Both employ locking ramp fastening
• Insulation Material: Both use glass-filled polymer insulation rated UL94 V-0
• Operating Temperature: Both support -55°C ~ 125°C range
• Series Compatibility: Both belong to Harwin Inc.'s Datamate L-Tek series

The M80-8400545 is an active production part, providing a viable replacement path for the obsolete B5741-105-F-N-2.

Parameter Comparison

Engineering Selection Recommendations

The M80-8400545 is the recommended substitute for the obsolete B5741-105-F-N-2. Key selection factors include:

• Product Status: The M80-8400545 is an active production part with confirmed inventory availability (984 pcs), ensuring long-term supply continuity compared to the obsolete B5741-105-F-N-2.

• Regulatory Compliance: The M80-8400545 achieves ROHS3 compliance, whereas the B5741-105-F-N-2 is RoHS non-compliant. This compliance upgrade aligns with current environmental and regulatory requirements for automotive, general purpose, and military applications.

• Mechanical Compatibility: Both connectors maintain identical mating pitch, mounting configuration, and fastening mechanisms, ensuring direct PCB layout compatibility without redesign.

• Electrical Performance: Both parts support the same operating temperature range (-55°C ~ 125°C) and share identical contact materials and finishes, maintaining electrical performance characteristics across thermal cycles.

• Packaging: The M80-8400545 is supplied in tube packaging, facilitating automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can M80-8400545 be used as a direct replacement for B5741-105-F-N-2 on existing PCBs?

A: Yes. Both connectors share identical mating pitch (0.079" / 2.00mm), through-hole mounting configuration, and footprint dimensions. No PCB redesign is required.

Q: What are the key differences between these two parts?

A: The primary differences are product status and regulatory compliance. The M80-8400545 is an active production part with ROHS3 compliance, while the B5741-105-F-N-2 is obsolete and RoHS non-compliant. The M80-8400545 also features a longer contact post (0.126" vs 0.051") and higher voltage rating (800V vs 120V).

Q: Are the contact post lengths interchangeable?

A: The B5741-105-F-N-2 has a contact post length of 0.051" (1.30mm), while the M80-8400545 has 0.126" (3.20mm). For applications requiring specific post engagement depths, verify PCB hole depth and mating connector specifications before substitution.

Q: What is the voltage rating difference, and does it affect compatibility?

A: The B5741-105-F-N-2 is rated for 120V, while the M80-8400545 is rated for 800V. The higher voltage rating of the substitute part does not create compatibility issues; it provides additional safety margin for applications operating at or below 120V.

Q: Does the insulation material change affect performance?

A: The B5741-105-F-N-2 uses polyester glass-filled insulation, while the M80-8400545 uses polyamide (PA46) nylon 4/6 glass-filled insulation. Both materials maintain UL94 V-0 flammability ratings and support the same operating temperature range. Material selection does not affect electrical or mechanical compatibility.

Q: Is the M80-8400545 available in the same packaging as the original part?

A: The M80-8400545 is supplied in tube packaging. The original B5741-105-F-N-2 packaging specification was not provided. Verify packaging requirements for your assembly process.