B5741-208-F-N-2 Equivalent & Substitute Parts

Part Overview

The B5741-208-F-N-2 is an 8-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 suitable substitutes essential for ongoing production and maintenance applications requiring equivalent electrical and mechanical performance.

Substiute Parts

B5741-208-F-N-2

Harwin Inc.In Stock: 938B5741-208-F-N-2 Datasheet

Current PartRFQ

M80-8500845

Harwin Inc.In Stock: 1345M80-8500845 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the B5741-208-F-N-2 is based on strict equivalence of the following critical parameters:

• Connector type (Receptacle)
• Number of positions (8)
• Pitch configuration (0.079" mating pitch, 2-row layout with 0.079" row spacing)
• Mounting method (Through Hole)
• Termination type (Solder)
• Contact finish material (Gold)
• Operating temperature range (-55°C ~ 125°C)
• Material flammability rating (UL94 V-0)
• Contact material (Beryllium Copper)
• Series family (Datamate L-Tek)

The substitute part M80-8500845 meets all these criteria while offering improved product status and compliance characteristics.

Parameter Comparison

Engineering Selection Recommendations

M80-8500845 is the direct substitute for B5741-208-F-N-2. Both connectors share identical mechanical and electrical specifications within the Datamate L-Tek series, ensuring functional compatibility in board-to-board and cable applications.

The primary advantages of M80-8500845 are:

• Active product status with ongoing manufacturer support and availability
• ROHS3 compliance, meeting current environmental and regulatory requirements
• Higher voltage rating (800V versus 120V), providing greater design margin for applications with elevated voltage specifications
• Established supply chain with 1323 units in stock versus the obsolete status of the original part

For applications requiring the exact electrical characteristics of the B5741-208-F-N-2, M80-8500845 provides full functional equivalence with improved compliance and availability.

Frequently Asked Questions (FAQ)

Q: Can M80-8500845 directly replace B5741-208-F-N-2 in existing designs?

A: Yes. Both connectors are Datamate L-Tek series receptacles with identical pitch (0.079"), position count (8), row configuration (2 rows), mounting method (through hole), and termination type (solder). Mechanical and electrical compatibility is assured.

Q: What is the difference in contact post length between these parts?

A: B5741-208-F-N-2 has a contact post length of 0.051" (1.30mm), while M80-8500845 has 0.118" (3.00mm). This difference affects PCB hole depth requirements and mating stack height. Design verification is necessary to confirm PCB accommodation of the longer post length.

Q: Why is the voltage rating different?

A: B5741-208-F-N-2 is rated at 120V, while M80-8500845 is rated at 800V. The higher rating in M80-8500845 reflects improved insulation design. Both ratings exceed typical board-to-board application requirements.

Q: Are there packaging differences?

A: B5741-208-F-N-2 packaging is not specified in available data. M80-8500845 is supplied in tube packaging. Confirm packaging requirements for your procurement and assembly processes.

Q: What is the difference in insulation material?

A: B5741-208-F-N-2 uses Polyester with glass fill. M80-8500845 uses Polyamide (PA46) Nylon 4/6 with glass fill. Both materials meet UL94 V-0 flammability requirements and operate across the same temperature range.

Q: Is RoHS compliance a functional requirement for my application?

A: RoHS compliance is a regulatory and supply chain consideration. B5741-208-F-N-2 is RoHS non-compliant. M80-8500845 is ROHS3 compliant. Confirm regulatory requirements for your end market and application.