B5741-104-F-N-2 Equivalent & Substitute Parts

Part Overview

The B5741-104-F-N-2 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 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 substitute components essential for ongoing production and maintenance applications.

Substiute Parts

B5741-104-F-N-2

Harwin Inc.In Stock: 699B5741-104-F-N-2 Datasheet

Current PartRFQ

M80-8400445

Harwin Inc.In Stock: 899M80-8400445 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the B5741-104-F-N-2 is based on the following critical parameters that must remain consistent:

• Connector Type & Position Count: Receptacle, 4-position configuration
• Pitch Specification: 0.079" (2.00mm) mating pitch
• Mounting & Termination: Through-hole solder termination
• Contact Configuration: Female socket, circular contact shape, beryllium copper material
• Contact Finish: Gold-plated mating contacts
• Fastening Mechanism: Locking ramp
• Series Compatibility: Datamate L-Tek series

The M80-8400445 qualifies as a direct substitute based on matching these core electrical and mechanical parameters. Both connectors share identical pitch, position count, mounting type, contact material, and fastening mechanism within the same product series.

Parameter Comparison

Engineering Selection Recommendations

The M80-8400445 is the active production equivalent for the obsolete B5741-104-F-N-2. Both connectors maintain identical mechanical and electrical compatibility within the Datamate L-Tek series, with matching pitch, position count, contact configuration, and termination method.

Key considerations for selection:

Product Status: The M80-8400445 is in active production status, ensuring long-term availability and supply chain continuity compared to the obsolete B5741-104-F-N-2.

Compliance: The M80-8400445 achieves ROHS3 compliance, whereas the B5741-104-F-N-2 is RoHS non-compliant. This distinction is significant for applications subject to RoHS regulations.

Voltage Rating: The M80-8400445 provides an 800V voltage rating compared to the 120V rating of the B5741-104-F-N-2. This higher rating does not compromise compatibility and offers enhanced electrical performance margin.

Insulation Material: The M80-8400445 uses polyamide (PA46) nylon 4/6 glass-filled insulation, whereas the B5741-104-F-N-2 uses polyester glass-filled insulation. Both materials maintain UL94 V-0 flammability ratings and equivalent thermal performance across the specified operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can M80-8400445 directly replace B5741-104-F-N-2 in existing designs?

A: Yes. Both connectors share identical mating pitch (0.079"), position count (4), contact configuration, mounting type (through-hole), and fastening mechanism (locking ramp). Mechanical and electrical compatibility is maintained.

Q: What is the significance of the voltage rating difference?

A: The M80-8400445 specifies 800V while the B5741-104-F-N-2 specifies 120V. The higher rating in the substitute part does not create incompatibility; it indicates enhanced electrical performance capability. Applications designed for 120V operation remain fully compatible.

Q: Does the RoHS compliance difference affect substitution?

A: RoHS compliance status depends on application requirements. If RoHS3 compliance is mandated, M80-8400445 is the appropriate selection. If RoHS compliance is not required, both parts are functionally equivalent.

Q: Are the insulation materials interchangeable?

A: Yes. Both polyester and polyamide (PA46) nylon 4/6 insulation materials achieve UL94 V-0 flammability ratings and operate across the identical temperature range (-55°C to 125°C). Material substitution does not affect connector performance in standard applications.

Q: What packaging format is available for M80-8400445?

A: M80-8400445 is supplied in tube packaging, suitable for automated assembly and manual component handling.

Q: Are there differences in contact post length?

A: Yes. B5741-104-F-N-2 specifies 0.051" (1.30mm) contact post length, while M80-8400445 specifies 0.126" (3.20mm). This difference reflects design evolution within the series and does not affect mating compatibility with standard Datamate L-Tek plug connectors.