B5741-204-F-N-2 Equivalent & Substitute Parts

Part Overview

The B5741-204-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 spacing. This connector features through-hole solder termination, gold-plated contacts, and is rated for 3A at 120V across operating temperatures from -55°C to 125°C. The part is currently obsolete, making identification of active equivalent components essential for ongoing production and maintenance applications.

Substiute Parts

B5741-204-F-N-2

Harwin Inc.In Stock: 783B5741-204-F-N-2 Datasheet

Current PartRFQ

M80-8500445

Harwin Inc.In Stock: 752M80-8500445 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The M80-8500445 qualifies as a direct substitute for the B5741-204-F-N-2 based on the following critical parameters:

• Identical connector type (Receptacle) and contact type (Female Socket)
• Matching position count (4 positions) and row configuration (2 rows)
• Identical mating pitch (0.079" / 2.00mm) and row spacing (0.079" / 2.00mm)
• Same mounting method (Through Hole) and termination type (Solder)
• Identical contact material (Beryllium Copper) and mating contact finish (Gold)
• Matching operating temperature range (-55°C ~ 125°C)
• Same flammability rating (UL94 V-0)
• Same series designation (Datamate L-Tek)

The M80-8500445 is an active product, providing continuity for applications currently using the obsolete B5741-204-F-N-2.

Parameter Comparison

Engineering Selection Recommendations

The M80-8500445 is the direct active equivalent for the obsolete B5741-204-F-N-2. Both connectors share identical mechanical and electrical specifications across all critical mating parameters, ensuring pin-for-pin compatibility in existing applications.

The M80-8500445 offers improved compliance status, meeting ROHS3 requirements compared to the non-compliant B5741-204-F-N-2. The substitute part also provides a higher voltage rating (800V versus 120V), which does not restrict its use in applications rated for 120V operation.

Contact length differences exist between the two parts (0.051" for B5741-204-F-N-2 versus 0.118" for M80-8500445), reflecting design variations in post geometry. Both parts maintain identical mating interface dimensions and row spacing, preserving mechanical fit in standard PCB layouts.

Frequently Asked Questions (FAQ)

Q: Are B5741-204-F-N-2 and M80-8500445 pin-for-pin compatible?

A: Yes. Both connectors share identical mating pitch (0.079" / 2.00mm), row spacing (0.079" / 2.00mm), position count (4), and row configuration (2 rows). The mating interface is identical, ensuring direct substitution in existing PCB designs.

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

A: The B5741-204-F-N-2 has a contact post length of 0.051" (1.30mm), while the M80-8500445 has 0.118" (3.00mm). This difference does not affect mating compatibility but reflects variations in solder tail geometry for PCB insertion depth.

Q: Does the higher voltage rating of M80-8500445 affect compatibility?

A: No. The M80-8500445 is rated for 800V, which exceeds the 120V rating of the B5741-204-F-N-2. A higher voltage rating does not restrict use in lower-voltage applications and provides additional design margin.

Q: What is the packaging difference?

A: The B5741-204-F-N-2 packaging is not specified in available data. The M80-8500445 is supplied in tube packaging, which is standard for this connector series.

Q: Is the M80-8500445 RoHS compliant?

A: Yes. The M80-8500445 meets ROHS3 compliance requirements, whereas the B5741-204-F-N-2 is RoHS non-compliant. Both parts are REACH Unaffected and carry EAR99 ECCN classification.

Q: Can I use M80-8500445 in automotive and military applications?

A: Yes. Both connectors are rated for automotive, general purpose, and military applications with identical operating temperature ranges (-55°C ~ 125°C) and UL94 V-0 flammability ratings.