B5741-210-F-N-2 Equivalent & Substitute Parts

Part Overview

The B5741-210-F-N-2 is a 10-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 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

B5741-210-F-N-2

Harwin Inc.In Stock: 891B5741-210-F-N-2 Datasheet

Current PartRFQ

M80-8501045

Harwin Inc.In Stock: 7187M80-8501045 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The M80-8501045 qualifies as a direct substitute for the B5741-210-F-N-2 based on the following critical parameters:

Matching Parameters:

• Connector type: Receptacle with female socket contacts
• Position count: 10 positions
• Pitch spacing: 0.079" (2.00mm) mating pitch and row spacing
• Row configuration: 2 rows
• Mounting: Through-hole solder termination
• Fastening: Locking ramp mechanism
• Contact material: Beryllium copper with gold plating
• Operating temperature: -55°C ~ 125°C
• Flammability: UL94 V-0
• Series: Datamate L-Tek
• Applications: Automotive, General Purpose, Military

The M80-8501045 represents the active production equivalent within the same connector series, with the primary distinction being product status (active versus obsolete) and enhanced compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The M80-8501045 is the appropriate selection for applications currently using or requiring the B5741-210-F-N-2. The substitute part maintains full mechanical and electrical compatibility across all critical mating parameters while offering the following advantages:

Product Status: The M80-8501045 is an active production component with established supply chain availability, whereas the B5741-210-F-N-2 is obsolete.

Compliance: The M80-8501045 achieves ROHS3 compliance, addressing regulatory requirements for new designs and production runs. The original part is RoHS non-compliant.

Electrical Performance: The M80-8501045 provides an 800V voltage rating compared to the 120V rating of the original part, offering enhanced electrical margin for applications requiring higher voltage tolerance.

Material Specification: The M80-8501045 utilizes polyamide (PA46) nylon 4/6 glass-filled insulation material, providing improved thermal and mechanical properties compared to the polyester glass-filled insulation of the B5741-210-F-N-2.

Contact Post Length: The M80-8501045 features a 0.118" (3.00mm) contact post length versus 0.051" (1.30mm) on the original part, accommodating thicker PCB assemblies and providing improved solder joint reliability.

Frequently Asked Questions (FAQ)

Q: Can M80-8501045 be used as a direct replacement for B5741-210-F-N-2 in existing designs?

A: Yes. The M80-8501045 maintains identical mating pitch (0.079"), row spacing (0.079"), position count (10), and fastening mechanism (locking ramp). PCB footprints designed for the B5741-210-F-N-2 are compatible with the M80-8501045. The longer contact post (0.118" versus 0.051") accommodates standard PCB thicknesses and improves solder joint formation.

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

A: Primary differences include product status (active versus obsolete), RoHS compliance (ROHS3 versus non-compliant), voltage rating (800V versus 120V), contact post length (0.118" versus 0.051"), and insulation material composition (polyamide versus polyester). All differences favor the M80-8501045 for new production and maintenance applications.

Q: Are there packaging differences between B5741-210-F-N-2 and M80-8501045?

A: The M80-8501045 is supplied in tube packaging. Packaging format does not affect connector functionality or PCB integration.

Q: Does the increased voltage rating of M80-8501045 affect compatibility?

A: No. Higher voltage rating indicates enhanced electrical capability and does not compromise compatibility with applications rated at 120V or lower. The M80-8501045 is suitable for applications across the full voltage range of the original part and beyond.

Q: Are the contact materials identical?

A: Yes. Both parts use beryllium copper contacts with gold plating. Contact finish thickness on the mating surface is identical at 12.0µin (0.30µm).

Q: What is the significance of the insulation material change?

A: The polyamide (PA46) nylon 4/6 glass-filled material in the M80-8501045 provides superior thermal stability and mechanical strength compared to polyester glass-filled insulation. This material upgrade supports the enhanced voltage rating and improves long-term reliability in automotive and military applications.