M50-3201445 Equivalent & Substitute Parts

Part Overview

The M50-3201445 is a 28-position receptacle connector from Harwin Inc.'s Archer M50 series, designed for board-to-board or cable applications with 0.050" (1.27mm) pitch spacing. This connector features through-hole, right-angle mounting with gold-plated contacts and solder termination. The product is currently obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Key Parameters

Parameter	M50-3201445
Manufacturer	Harwin Inc.
Series	Archer M50
Connector Type	Receptacle
Number of Positions	28
Pitch - Mating	0.050" (1.27mm)
Number of Rows	2
Mounting Type	Through Hole, Right Angle
Contact Finish - Mating	Gold
Current Rating	1A
Operating Temperature	-40°C ~ 105°C
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the M50-3201445 is determined by the following critical parameters that must remain consistent:

Manufacturer: Harwin Inc.
Series: Archer M50
Connector Type: Receptacle
Pitch - Mating: 0.050" (1.27mm)
Number of Rows: 2
Mounting Type: Through Hole, Right Angle
Contact Finish - Mating: Gold
Termination: Solder
Current Rating: 1A
Operating Temperature Range: -40°C ~ 105°C

The M50-3201545 qualifies as a substitute because it maintains all critical electrical and mechanical parameters. The primary difference is the number of positions (30 vs. 28), which represents a compatible expansion within the same connector family and footprint architecture.

Parameter Comparison

Parameter	M50-3201445	M50-3201545	Status
Manufacturer	Harwin Inc.	Harwin Inc.	Match
Series	Archer M50	Archer M50	Match
Connector Type	Receptacle	Receptacle	Match
Number of Positions	28	30	Variation
Pitch - Mating	0.050" (1.27mm)	0.050" (1.27mm)	Match
Number of Rows	2	2	Match
Row Spacing - Mating	0.050" (1.27mm)	0.050" (1.27mm)	Match
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle	Match
Termination	Solder	Solder	Match
Contact Finish - Mating	Gold	Gold	Match
Contact Finish Thickness - Mating	10.0µin (0.25µm)	10.0µin (0.25µm)	Match
Insulation Color	Black	Black	Match
Insulation Height	0.136" (3.46mm)	0.136" (3.46mm)	Match
Contact Length - Post	0.094" (2.40mm)	0.094" (2.40mm)	Match
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	Match
Material Flammability Rating	UL94 V-0	UL94 V-0	Match
Contact Finish - Post	Gold	Gold	Match
Current Rating	1A	1A	Match
Insulation Material	Polyamide (PA9T), Nylon 9T	Polyamide (PA9T), Nylon 9T	Match
Contact Shape	Square	Square	Match
Contact Material	Phosphor Bronze	Phosphor Bronze	Match
Contact Finish Thickness - Post	10.0µin (0.25µm)	10.0µin (0.25µm)	Match
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Match
REACH Status	REACH Unaffected	REACH Unaffected	Match
Product Status	Obsolete	Active	Variation

Engineering Selection Recommendations

The M50-3201545 is the designated manufacturer substitute for the obsolete M50-3201445. Both components maintain identical electrical and mechanical specifications across all critical parameters including pitch, mounting configuration, contact materials, and thermal ratings. The M50-3201545 is currently in active production status with established inventory availability, whereas the M50-3201445 is obsolete.

The position count difference (30 vs. 28) represents a compatible variation within the Archer M50 connector family. Both components share the same base architecture, footprint spacing, and contact configuration. The M50-3201545 provides additional contact positions while maintaining full backward compatibility with the electrical and mechanical interface requirements.

Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for medical, telecommunications, and general-purpose applications.

Frequently Asked Questions (FAQ)

Q: Can the M50-3201545 directly replace the M50-3201445 in existing designs?

A: The M50-3201545 is mechanically and electrically compatible with the M50-3201445. The primary consideration is the increased position count (30 vs. 28). If your application uses only 28 positions, the additional 2 positions on the substitute part will remain unused. The connector footprint, pitch spacing, and mounting configuration are identical.

Q: What is the significance of the position count difference?

A: The M50-3201545 provides 30 contact positions compared to the 28 positions of the M50-3201445. Both connectors maintain the same 0.050" (1.27mm) pitch and two-row configuration. The additional positions do not affect compatibility if your circuit design accommodates or ignores the extra contacts.

Q: Are there any compliance or certification differences between these parts?

A: Both the M50-3201445 and M50-3201545 maintain identical compliance certifications: UL94 V-0 flammability rating, ROHS3 compliance, and REACH unaffected status. No compliance trade-offs exist between these components.

Q: Why is the M50-3201445 obsolete while the M50-3201545 remains active?

A: Product status reflects manufacturer production decisions. The M50-3201545 remains in active production and is the current recommended component for new designs and ongoing system support. The M50-3201445 has been discontinued by Harwin Inc.

Q: What packaging is available for the M50-3201545?

A: The M50-3201545 is supplied in tube packaging. The M50-3201445 packaging information was not specified in the original documentation.

Q: Are the contact materials and finishes identical?

A: Yes. Both connectors use phosphor bronze contacts with 10.0µin (0.25µm) gold plating on both mating and post surfaces. The contact finish specifications are identical across all parameters.

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