M52-5051345 Equivalent & Substitute Parts

Part Overview

The M52-5051345 is a 13-position receptacle connector manufactured by Harwin Inc., designed for board-to-board applications with 0.050" (1.27mm) pitch spacing. This surface mount connector features gold-plated female socket contacts, solder termination, and push-pull fastening. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement planning.

Key Parameters

Parameter	Value
Manufacturer Part Number	M52-5051345
Manufacturer	Harwin Inc.
Category	Rectangular Connectors
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	13
Pitch - Mating	0.050" (1.27mm)
Mounting Type	Surface Mount
Termination	Solder
Contact Finish - Mating	Gold
Operating Temperature	-40°C ~ 105°C
Current Rating	1A
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the M52-5051345 is constrained by the following critical parameters:

Connector Type & Contact Type: Must remain receptacle with female socket contacts for board-to-board mating compatibility
Pitch Specification: 0.050" (1.27mm) pitch is mandatory for mechanical and electrical alignment
Mounting Technology: Surface mount requirement must be maintained
Termination Method: Solder termination is required for PCB integration
Contact Finish: Gold plating on mating surfaces ensures consistent electrical performance
Operating Temperature Range: -40°C ~ 105°C operational envelope
Current Rating: 1A minimum current capacity
Compliance Standards: UL94 V-0 flammability and ROHS3 compliance

The M52-5051245 qualifies as a substitute based on matching all critical parameters. The primary difference is position count: the substitute provides 12 positions versus the original 13 positions. This substitution is valid only when the application design can accommodate the reduced position count without functional impact.

Parameter Comparison

Parameter	M52-5051345 (Main Part)	M52-5051245 (Substitute)
Manufacturer	Harwin Inc.	Harwin Inc.
Connector Type	Receptacle	Receptacle
Contact Type	Female Socket	Female Socket
Number of Positions	13	12
Pitch - Mating	0.050" (1.27mm)	0.050" (1.27mm)
Mounting Type	Surface Mount	Surface Mount
Termination	Solder	Solder
Contact Finish - Mating	Gold	Gold
Insulation Color	Black	Black
Insulation Height	0.224" (5.69mm)	0.224" (5.69mm)
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0
Current Rating	1A	1A
Insulation Material	Polyamide (PA6T), Nylon 6T	Polyamide (PA6T), Nylon 6T
Contact Shape	Square	Square
Contact Material	Phosphor Bronze	Phosphor Bronze
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
Product Status	Obsolete	Active

Engineering Selection Recommendations

The M52-5051245 is the manufacturer-recommended substitute for the obsolete M52-5051345. Both components maintain identical electrical and mechanical specifications across all critical parameters including pitch, contact finish, operating temperature range, current rating, and compliance certifications.

The M52-5051245 carries active product status, ensuring continued availability and manufacturing support. Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for current applications.

The primary design consideration is the position count reduction from 13 to 12. This substitution is applicable only when the circuit design can function with the reduced connector capacity. PCB layout modifications may be required to accommodate the different position count while maintaining the identical 0.050" pitch spacing.

Frequently Asked Questions (FAQ)

Q: Can the M52-5051245 be used as a direct replacement for the M52-5051345?

A: The M52-5051245 is electrically and mechanically compatible with the M52-5051345 across all critical parameters. However, the position count differs (12 versus 13). Direct replacement is possible only if the application design does not require all 13 positions.

Q: What is the primary difference between these two connectors?

A: The M52-5051345 provides 13 contact positions, while the M52-5051245 provides 12 contact positions. All other specifications, including pitch, contact finish, operating temperature, current rating, and compliance certifications, are identical.

Q: Are there any packaging differences between the main part and substitute?

A: The M52-5051245 is supplied in tube packaging. Packaging format does not affect electrical or mechanical compatibility.

Q: Do both connectors meet the same compliance standards?

A: Yes. Both the M52-5051345 and M52-5051245 are ROHS3 compliant, REACH unaffected, and rated UL94 V-0 for material flammability.

Q: What is the current availability status of each part?

A: The M52-5051345 is classified as obsolete. The M52-5051245 maintains active product status with current manufacturing support.

Q: Are the mating stacking heights identical?

A: Yes. Both connectors specify mated stacking heights of 8.5mm and 9.77mm.

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