B5741-103-F-N-0 Equivalent & Substitute Parts

Part Overview

The B5741-103-F-N-0 is a 3-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 mating 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

B5741-103-F-N-0

Harwin Inc.In Stock: 827B5741-103-F-N-0 Datasheet

Current PartRFQ

M80-8400342

Harwin Inc.In Stock: 1239M80-8400342 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The M80-8400342 qualifies as a direct substitute for the B5741-103-F-N-0 based on the following critical parameters:

• Connector Type & Position Count: Both are 3-position receptacles
• Mating Pitch: Both maintain 0.079" (2.00mm) pitch compatibility
• Mounting Configuration: Both use through-hole solder termination with locking ramp fastening
• Mating Contact Finish: Both feature gold-plated mating contacts
• Operating Temperature: Both support -55°C ~ 125°C range
• Series Compatibility: Both belong to Harwin's Datamate L-Tek series
• Mechanical Interface: Both are designed for board-to-board or cable applications

The M80-8400342 represents the active production equivalent, with improved compliance status and higher inventory availability.

Parameter Comparison

Engineering Selection Recommendations

The M80-8400342 is the recommended substitute for the obsolete B5741-103-F-N-0. Selection is based on the following factors:

Product Status: The B5741-103-F-N-0 is obsolete and no longer in active production. The M80-8400342 is an active product with confirmed inventory availability (1166 pcs in stock versus 774 pcs for the obsolete part).

Regulatory Compliance: The M80-8400342 achieves ROHS3 compliance, whereas the B5741-103-F-N-0 is RoHS non-compliant. For applications subject to RoHS directives, the M80-8400342 is the appropriate choice.

Electrical & Mechanical Compatibility: Both parts maintain identical mating pitch, contact configuration, operating temperature range, and fastening mechanisms. The M80-8400342 supports higher voltage rating (800V versus 120V), providing additional margin for applications with elevated voltage requirements.

Packaging: The M80-8400342 is supplied in tube packaging, which may differ from the original part's packaging configuration. Verify packaging requirements for your assembly process.

Frequently Asked Questions (FAQ)

Q: Can M80-8400342 directly replace B5741-103-F-N-0 in existing designs?

A: Yes. Both connectors share identical mating pitch (0.079"), position count (3), contact finish (gold), mounting type (through-hole), and fastening mechanism (locking ramp). The mechanical and electrical interfaces are compatible.

Q: What are the key differences between these parts?

A: The primary differences are product status (obsolete versus active), RoHS compliance (non-compliant versus ROHS3 compliant), voltage rating (120V versus 800V), and packaging format (unspecified versus tube). The M80-8400342 also features a longer contact post (0.126" versus 0.051") and different post finish material (tin versus tin-lead).

Q: Are there voltage or current rating considerations?

A: The B5741-103-F-N-0 specifies 3A current rating and 120V voltage rating. The M80-8400342 specifies 800V voltage rating with no current rating provided in the available data. For applications requiring specific current ratings, verify the M80-8400342 datasheet for current handling specifications.

Q: Does the longer contact post on M80-8400342 affect compatibility?

A: The M80-8400342 contact post length is 0.126" (3.20mm) compared to 0.051" (1.30mm) on the B5741-103-F-N-0. This difference affects mated stacking height (7.23mm or 7.83mm for M80-8400342). Verify PCB layout and mating component clearances to ensure accommodation of the longer post.

Q: What is the impact of different insulation materials?

A: The B5741-103-F-N-0 uses polyester glass-filled insulation, while the M80-8400342 uses polyamide (PA46) nylon 4/6 glass-filled insulation. Both materials maintain UL94 V-0 flammability rating and support the same operating temperature range. Material selection should be verified against specific environmental and chemical exposure requirements.

Q: Is RoHS compliance mandatory for my application?

A: RoHS compliance requirements depend on your end-market and regulatory jurisdiction. If RoHS compliance is required, the M80-8400342 (ROHS3 compliant) is the appropriate selection. The B5741-103-F-N-0 (RoHS non-compliant) may only be used in applications exempt from RoHS directives.