B5741-106-F-N-0 Equivalent & Substitute Parts

Part Overview

The B5741-106-F-N-0 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 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 design support and procurement.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Number of Positions	6
Pitch - Mating	0.079" (2.00mm)
Contact Type	Female Socket
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Locking Ramp
Contact Finish - Mating	Gold
Operating Temperature Range	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
Series	Datamate L-Tek

Substitute Part Grouping Explanation

The M80-8400642 qualifies as a direct substitute for the B5741-106-F-N-0 based on the following critical parameters:

Connector Type & Configuration: Both are 6-position receptacle connectors with identical pitch (0.079" / 2.00mm)
Contact Interface: Both feature female socket contacts with gold mating finish and circular contact geometry
Mounting & Termination: Both use through-hole solder termination with locking ramp fastening
Thermal Performance: Both operate across the identical temperature range (-55°C ~ 125°C)
Flammability Compliance: Both meet UL94 V-0 material flammability rating
Series Compatibility: Both belong to the Datamate L-Tek series from Harwin Inc.

The M80-8400642 represents an active product status alternative to the obsolete B5741-106-F-N-0, with enhanced compliance (ROHS3 compliant vs. RoHS non-compliant) and improved voltage rating (800V vs. 120V).

Parameter Comparison

Parameter	B5741-106-F-N-0	M80-8400642
Manufacturer	Harwin Inc.	Harwin Inc.
Series	Datamate L-Tek	Datamate L-Tek
Product Status	Obsolete	Active
Connector Type	Receptacle	Receptacle
Number of Positions	6	6
Pitch - Mating	0.079" (2.00mm)	0.079" (2.00mm)
Contact Type	Female Socket	Female Socket
Mounting Type	Through Hole	Through Hole
Termination	Solder	Solder
Fastening Type	Locking Ramp	Locking Ramp
Contact Finish - Mating	Gold	Gold
Contact Finish Thickness - Mating	12.0µin (0.30µm)	12.0µin (0.30µm)
Insulation Color	Black	Black
Insulation Height	0.202" (5.14mm)	0.202" (5.14mm)
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0	UL94 V-0
Contact Shape	Circular	Circular
Contact Material	Beryllium Copper	Beryllium Copper
Voltage Rating	120V	800V
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Packaging	Not specified	Tube
Inventory Status	1122 Pcs New Original In Stock	966 Pcs New Original In Stock

Engineering Selection Recommendations

The M80-8400642 is the recommended substitute for the obsolete B5741-106-F-N-0. Both connectors maintain identical mechanical and electrical interface specifications, ensuring direct compatibility in existing designs. The M80-8400642 offers the following advantages:

Active Product Status: The M80-8400642 is an active product with ongoing manufacturer support and availability, whereas the B5741-106-F-N-0 is obsolete.
Enhanced Compliance: The M80-8400642 achieves ROHS3 compliance, meeting current regulatory requirements for new designs and procurement.
Improved Voltage Rating: The M80-8400642 provides an 800V voltage rating compared to the 120V rating of the original part, offering greater design margin for higher-voltage applications.
Consistent Availability: Both parts maintain adequate inventory levels, with the M80-8400642 available in tube packaging for standard procurement workflows.

Frequently Asked Questions (FAQ)

Q: Are the B5741-106-F-N-0 and M80-8400642 mechanically interchangeable?

A: Yes. Both connectors share identical pitch (0.079" / 2.00mm), mounting type (through-hole), insulation height (0.202" / 5.14mm), and fastening mechanism (locking ramp). They are mechanically interchangeable in board-level applications.

Q: What are the electrical compatibility considerations?

A: Both connectors feature identical contact geometry, material (beryllium copper), and mating contact finish (gold, 12.0µin thickness). The M80-8400642 provides a higher voltage rating (800V vs. 120V), making it suitable for applications requiring greater electrical margin.

Q: Does the difference in contact post length affect compatibility?

A: The contact post length differs between the two parts (B5741-106-F-N-0: 0.051" / 1.30mm; M80-8400642: 0.126" / 3.20mm). This difference is internal to the connector design and does not affect mating interface compatibility with standard Datamate L-Tek series plugs.

Q: What is the significance of the packaging difference?

A: The B5741-106-F-N-0 packaging is not specified, while the M80-8400642 is supplied in tube packaging. Tube packaging is standard for production procurement and does not affect connector performance or functionality.

Q: Are there temperature or environmental limitations?

A: Both connectors operate across the identical temperature range (-55°C ~ 125°C) and maintain UL94 V-0 flammability compliance. No environmental limitations differ between the two parts.

Q: Why is RoHS compliance status different?

A: The B5741-106-F-N-0 is RoHS non-compliant (obsolete product), while the M80-8400642 is ROHS3 compliant. For new designs and procurement in regulated markets, the M80-8400642 is the appropriate selection.

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