M50-4304545 Equivalent & Substitute Parts

Part Overview

The M50-4304545 is a 90 position receptacle connector manufactured by Harwin Inc. from the Archer M50 series. This surface mount board-to-board connector features 0.050" (1.27mm) pitch, gold-plated contacts, and is rated for 1A per contact with an operating temperature range of -40°C to 105°C. The part is currently listed as obsolete, making identification of equivalent and substitute components essential for ongoing design support and procurement planning.

Substiute Parts

M50-4304545

Harwin Inc.In Stock: 841M50-4304545 Datasheet

Current PartRFQ

M50-4302545

Harwin Inc.In Stock: 1063M50-4302545 Datasheet

MFR RecommendedRFQ

SFM-145-02-S-D-A

Samtec Inc.In Stock: 1138SFM-145-02-S-D-A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the M50-4304545 is determined by the following critical parameters:

• Connector Type & Style: Receptacle, board-to-board configuration
• Position Count & Pitch: 90 positions at 0.050" (1.27mm) mating pitch
• Row Configuration: 2 rows with 0.050" (1.27mm) row spacing
• Mounting Technology: Surface mount with solder termination
• Contact System: Female socket, gold-plated mating surface, push-pull fastening
• Insulation Material: Liquid Crystal Polymer (LCP)
• Compliance: UL94 V-0, RoHS3 compliant

Two substitute parts meet these core substitution criteria:

M50-4302545 (Harwin Inc.) - Manufacturer recommended substitute with identical pitch, row spacing, mounting type, and contact system. Primary difference is reduced position count (50 vs. 90), suitable for applications requiring fewer contact positions within the same connector family.

SFM-145-02-S-D-A (Samtec Inc.) - Cross-manufacturer substitute maintaining identical position count (90), pitch (0.050"), row configuration, mounting type, and contact geometry. Represents an alternative from a different manufacturer within the same connector category.

Parameter Comparison

Engineering Selection Recommendations

For Direct 90-Position Replacement: SFM-145-02-S-D-A (Samtec Inc.) is the primary substitute when position count must remain at 90. This part maintains active product status, identical position and pitch specifications, and provides enhanced electrical performance with 3.2A per contact rating and extended operating temperature range (-55°C to 125°C). Both parts carry equivalent compliance certifications (UL94 V-0, RoHS3, REACH Unaffected).

For Reduced Position Count Applications: M50-4302545 (Harwin Inc.) serves as the manufacturer-recommended alternative within the same Archer M50 series. This part is active and maintains identical electrical and mechanical characteristics as the original M50-4304545, with the exception of 50 positions instead of 90. Selection of this part is appropriate only when circuit design permits reduction from 90 to 50 contact positions.

Compliance Considerations: All three parts meet UL94 V-0 flammability requirements, RoHS3 compliance, and REACH unaffected status, ensuring regulatory compatibility across medical, telecommunications, and general purpose applications.

Frequently Asked Questions (FAQ)

Q: Can M50-4302545 be used as a direct replacement for M50-4304545?

A: M50-4302545 is not a direct replacement due to position count difference (50 vs. 90). It is suitable only if the application circuit design can operate with 50 contact positions instead of 90. Both parts share identical pitch, row spacing, mounting type, and contact system specifications.

Q: What are the key differences between SFM-145-02-S-D-A and M50-4304545?

A: SFM-145-02-S-D-A maintains identical position count (90), pitch (0.050"), row configuration, and mounting type. Differences include manufacturer (Samtec vs. Harwin), higher current rating (3.2A vs. 1A per contact), extended operating temperature range (-55°C to 125°C vs. -40°C to 105°C), and contact material (Beryllium Copper vs. Phosphor Bronze). Both parts are RoHS3 compliant and UL94 V-0 rated.

Q: Is SFM-145-02-S-D-A compatible with existing M50-4304545 mating connectors?

A: Compatibility is determined by mating connector specifications. Both parts feature identical 0.050" (1.27mm) pitch, 2-row configuration, and push-pull fastening. Verify that existing mating connectors support the SFM-145-02-S-D-A contact geometry and stacking height requirements (6.15mm to 11.76mm range).

Q: Why is M50-4304545 listed as obsolete?

A: Product obsolescence is determined by manufacturer discontinuation. Active alternatives M50-4302545 and SFM-145-02-S-D-A provide continued design support and procurement availability.

Q: Are all three parts suitable for medical applications?

A: M50-4304545 and M50-4302545 list medical applications in their specifications. SFM-145-02-S-D-A does not specify medical applications in the provided data. Verify application-specific requirements and certifications before selection for medical device designs.

Q: What is the packaging format for these connectors?

A: M50-4304545 packaging is not specified in available data. M50-4302545 is supplied in tube packaging. SFM-145-02-S-D-A is supplied in tube packaging. Confirm packaging requirements with procurement specifications.