M50-3201345 Equivalent & Substitute Parts

Part Overview

The M50-3201345 is a 26-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 right-angle through-hole mounting, gold-plated contacts, and is rated for -40°C to 105°C operation. The product is currently obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Manufacturer Part Number	M50-3201345
Manufacturer	Harwin Inc.
Category	Rectangular Connectors
Series	Archer M50
Connector Type	Receptacle
Number of Positions	26
Pitch - Mating	0.050" (1.27mm)
Number of Rows	2
Mounting Type	Through Hole, Right Angle
Contact Finish - Mating	Gold
Operating Temperature	-40°C ~ 105°C
Current Rating	1A
Product Status	Obsolete

Substitute Part Grouping Explanation

The M50-3201545 qualifies as a substitute based on the following matching electrical and mechanical parameters:

Same manufacturer (Harwin Inc.) and series (Archer M50)
Identical pitch spacing: 0.050" (1.27mm)
Identical number of rows: 2
Identical row spacing: 0.050" (1.27mm)
Identical mounting type: Through hole, right angle
Identical contact finish: Gold with 10.0µin (0.25µm) thickness
Identical insulation material: Polyamide (PA9T), Nylon 9T
Identical insulation height: 0.136" (3.46mm)
Identical contact length: 0.094" (2.40mm)
Identical operating temperature range: -40°C ~ 105°C
Identical current rating: 1A
Identical flammability rating: UL94 V-0
Identical contact material: Phosphor Bronze
Identical termination: Solder
Identical fastening type: Push-Pull

The primary difference is the number of positions: M50-3201545 provides 30 positions versus 26 positions in the original part. This substitution is valid when the application can accommodate the increased position count or when only a subset of positions is utilized.

Parameter Comparison

Parameter	M50-3201345	M50-3201545
Manufacturer	Harwin Inc.	Harwin Inc.
Series	Archer M50	Archer M50
Connector Type	Receptacle	Receptacle
Contact Type	Female Socket	Female Socket
Number of Positions	26	30
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	Through Hole, Right Angle	Through Hole, Right Angle
Termination	Solder	Solder
Fastening Type	Push-Pull	Push-Pull
Contact Finish - Mating	Gold	Gold
Contact Finish Thickness - Mating	10.0µin (0.25µm)	10.0µin (0.25µm)
Insulation Color	Black	Black
Insulation Height	0.136" (3.46mm)	0.136" (3.46mm)
Contact Length - Post	0.094" (2.40mm)	0.094" (2.40mm)
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0
Contact Finish - Post	Gold	Gold
Current Rating (Amps)	1A	1A
Insulation Material	Polyamide (PA9T), Nylon 9T	Polyamide (PA9T), Nylon 9T
Contact Shape	Square	Square
Contact Material	Phosphor Bronze	Phosphor Bronze
Contact Finish Thickness - Post	10.0µin (0.25µm)	10.0µin (0.25µm)
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
Product Status	Obsolete	Active

Engineering Selection Recommendations

The M50-3201545 is the manufacturer-recommended substitute for the obsolete M50-3201345. Both components maintain identical electrical and mechanical specifications across all critical parameters including pitch, mounting configuration, contact materials, and operating temperature range. The M50-3201545 offers the advantage of active product status, ensuring continued availability and supply chain support.

The primary design consideration is the increased position count (30 versus 26). Applications utilizing fewer than 30 positions can implement the M50-3201545 without functional impact. Applications requiring exactly 26 positions must evaluate whether the additional 4 positions present any physical or electrical constraints within the system design.

Both components carry equivalent compliance certifications: ROHS3 compliance, UL94 V-0 flammability rating, and REACH unaffected status. Moisture sensitivity level remains identical at MSL 1 (Unlimited), indicating no special handling requirements during storage or assembly.

Frequently Asked Questions (FAQ)

Q: Can M50-3201545 directly replace M50-3201345 in existing designs?

A: Yes, provided the application can accommodate 30 positions instead of 26. The electrical and mechanical interfaces are identical. PCB layout modifications may be required if the connector footprint differs due to the additional positions.

Q: What is the primary reason for substitution?

A: The M50-3201345 is obsolete. The M50-3201545 is the active equivalent from the same manufacturer and series, ensuring continued component availability.

Q: Are there any compliance differences between these parts?

A: No. Both components carry identical RoHS3 compliance, UL94 V-0 flammability rating, REACH unaffected status, and MSL 1 moisture sensitivity level.

Q: Does the increased position count affect electrical performance?

A: No. The current rating (1A), contact material (Phosphor Bronze), contact finish (Gold), and operating temperature range (-40°C ~ 105°C) remain identical. Additional positions do not impact the electrical characteristics of utilized contacts.

Q: What packaging is available for the substitute part?

A: The M50-3201545 is supplied in tube packaging, with 1850 pieces available in current inventory.

Q: Are the physical dimensions compatible?

A: Yes. Pitch spacing (0.050"), row spacing (0.050"), insulation height (0.136"), contact length (0.094"), and mounting type (through hole, right angle) are identical between both parts.

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