M50-3101045P Equivalent & Substitute Parts

Part Overview

The M50-3101045P is a 20-position receptacle connector from Harwin Inc.'s Archer M50 series, designed for surface mount applications with 0.050" (1.27mm) pitch. This connector features gold-plated contacts, push-pull fastening, and is rated for 1A at 250V across general purpose, medical, and telecommunications applications. 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
Contact Type	Female Socket
Number of Positions	20
Pitch - Mating	0.050" (1.27mm)
Number of Rows	2
Row Spacing - Mating	0.050" (1.27mm)
Mounting Type	Surface Mount
Termination	Solder
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Current Rating	1A
Voltage Rating	250V
Operating Temperature	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

The M50-3101045 serves as a direct substitute for the obsolete M50-3101045P. Substitution is based on identical electrical and mechanical parameters: both connectors maintain the same 20-position, 2-row configuration with 0.050" (1.27mm) pitch, surface mount termination, push-pull fastening, and gold contact finish. Both parts operate within the same temperature range (-40°C ~ 105°C), carry identical current (1A) and voltage (250V) ratings, and meet UL94 V-0 flammability and ROHS3 compliance requirements.

The critical distinction is product status: M50-3101045P is obsolete, while M50-3101045 is active production. The substitute part is packaged in tube format and utilizes Liquid Crystal Polymer (LCP) insulation material, compared to the original's Polyamide (PA6T) insulation. Both materials satisfy the same electrical and thermal requirements for this application category.

Parameter Comparison

Parameter	M50-3101045P (Original)	M50-3101045 (Substitute)
Manufacturer	Harwin Inc.	Harwin Inc.
Series	Archer M50	Archer M50
Product Status	Obsolete	Active
Connector Type	Receptacle	Receptacle
Contact Type	Female Socket	Female Socket
Number of Positions	20	20
Pitch - Mating	0.050" (1.27mm)	0.050" (1.27mm)
Number of Rows	2	2
Row Spacing - Mating	0.050" (1.27mm)	0.050" (1.27mm)
Mounting Type	Surface Mount	Surface Mount
Termination	Solder	Solder
Fastening Type	Push-Pull	Push-Pull
Contact Finish - Mating	Gold	Gold
Contact Finish Thickness - Mating	Flash	Flash
Insulation Color	Black	Black
Insulation Height	0.181" (4.60mm)	0.181" (4.60mm)
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0
Current Rating (Amps)	1A	1A
Voltage Rating	250V	250V
Applications	General Purpose, Medical, Telecommunications	General Purpose, Medical, Telecommunications
Contact Shape	Square	Square
Contact Material	Phosphor Bronze	Phosphor Bronze
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99
HTSUS	8536.69.4040	8536.69.4040
Insulation Material	Polyamide (PA6T), Nylon 6T	Liquid Crystal Polymer (LCP)
Packaging	Not specified	Tube
Inventory Status	664 Pcs New Original In Stock	1294 Pcs New Original In Stock

Engineering Selection Recommendations

The M50-3101045 is the appropriate selection for applications currently using the obsolete M50-3101045P. Both parts maintain identical electrical specifications, mechanical dimensions, and compliance certifications. The substitute part is in active production status, ensuring long-term availability and supply chain continuity.

The insulation material difference (Polyamide PA6T versus Liquid Crystal Polymer LCP) does not affect functional compatibility. Both materials meet the UL94 V-0 flammability requirement and operate across the identical temperature range. The LCP material in the substitute part provides equivalent performance characteristics for the specified application categories.

Procurement should transition to M50-3101045 for new designs and ongoing production requirements. The tube packaging format of the substitute part is standard for surface mount connector distribution and is compatible with automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can M50-3101045 directly replace M50-3101045P in existing designs?

A: Yes. Both connectors are electrically and mechanically identical. They share the same 20-position, 2-row configuration, 0.050" (1.27mm) pitch, surface mount termination, and gold contact finish. Operating temperature ranges, current ratings (1A), and voltage ratings (250V) are identical. PCB footprints and mating interface dimensions are equivalent.

Q: What is the difference between the insulation materials?

A: The original M50-3101045P uses Polyamide (PA6T) insulation, while the substitute M50-3101045 uses Liquid Crystal Polymer (LCP). Both materials satisfy UL94 V-0 flammability requirements and operate across -40°C to 105°C. Material selection does not affect electrical performance or mechanical compatibility for this connector category.

Q: Are there packaging considerations when switching to M50-3101045?

A: The substitute part is supplied in tube packaging, which is standard for surface mount connectors. This format is compatible with automated pick-and-place assembly equipment. No design or assembly process modifications are required.

Q: Do both parts meet the same compliance standards?

A: Yes. Both M50-3101045P and M50-3101045 are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Both carry UL94 V-0 material flammability ratings and MSL 1 (Unlimited) moisture sensitivity levels.

Q: Why is M50-3101045P obsolete?

A: Product obsolescence is determined by manufacturer production decisions. The active substitute M50-3101045 provides identical functionality and is recommended for all new procurement and design activities.

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