Equivalent & Substitute Parts for Molex 0702871249

Part Overview

The Molex 0702871249 is a rectangular connector header designed for through-hole mounting applications. This 12-position, 2-row connector with 0.100" (2.54mm) pitch serves general-purpose, automotive, lighting, medical, and telecommunications applications. The part is currently active in production with 1093 units in stock. Substitute parts are identified to provide design flexibility, supply chain alternatives, and compatibility options for applications requiring equivalent electrical and mechanical performance.

Key Parameters

Parameter	Value
Connector Type	Header, Breakaway
Contact Type	Male Pin
Number of Positions	12
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Kinked Pin, Solder
Contact Finish - Mating	Gold
Insulation Material	Liquid Crystal Polymer (LCP), Glass Filled
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0702871249 is determined by the following critical parameters:

Connector Configuration: 12 positions, 2 rows, 0.100" (2.54mm) pitch and row spacing
Contact Type: Male pin configuration
Mounting Method: Through-hole solder termination
Fastening Type: Push-pull mechanism
Compliance: ROHS3 compliance and UL94 V-0 flammability rating
Moisture Sensitivity: MSL 1 (Unlimited)

All identified substitute parts meet these core requirements. Variations in contact material (Copper Alloy vs. Brass), insulation material (LCP vs. PBT vs. Polyamide), contact finish thickness, and operating temperature ranges are within acceptable substitution parameters for this connector category.

Parameter Comparison

Parameter	Molex 0702871249	Hirose A1-12PA-2.54DSA(71)	Harwin M20-9980645	Harwin M20-9980646
Manufacturer	Molex	Hirose Electric Co Ltd	Harwin Inc.	Harwin Inc.
Number of Positions	12	12	12	12
Number of Rows	2	2	2	2
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Kinked Pin, Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Finish - Mating	Gold	Gold	Gold	Tin
Contact Material	Copper Alloy	Brass	Brass	Brass
Insulation Material	LCP, Glass Filled	PBT	Polyamide (PA6T), Nylon 6T	Polyamide (PA6T), Nylon 6T
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

All substitute parts are active products with ROHS3 compliance and UL94 V-0 flammability certification, meeting the regulatory requirements of the original Molex 0702871249.

Hirose A1-12PA-2.54DSA(71): Maintains gold mating contact finish matching the original part. Operating temperature range of -55°C to 85°C and rated current of 3A per contact are specified. Packaged in trays with 1262 units in stock.

Harwin M20-9980645: Features cuttable header design with gold mating contact finish. Operating temperature range extends to -40°C to 105°C with 3A per contact current rating. Bulk packaging with 5699 units in stock.

Harwin M20-9980646: Cuttable header design with tin mating contact finish. Operating temperature range of -40°C to 105°C and 3A per contact current rating. Bulk packaging with 11667 units in stock, providing highest inventory availability.

All parts share identical pitch, row spacing, position count, and mounting configuration. Selection among substitutes depends on specific application requirements for contact finish, operating temperature range, and packaging format.

Frequently Asked Questions (FAQ)

Q: Can the Hirose A1-12PA-2.54DSA(71) be used as a direct replacement for the Molex 0702871249?

A: Yes. Both connectors share identical 12-position, 2-row configuration with 0.100" (2.54mm) pitch and row spacing. Both feature male pin contacts, through-hole solder termination, push-pull fastening, and gold mating contact finish. Insulation material differs (PBT vs. LCP), but both meet UL94 V-0 and ROHS3 requirements.

Q: What is the difference between the two Harwin M20 parts?

A: The M20-9980645 and M20-9980646 are functionally equivalent with identical electrical and mechanical specifications. The primary difference is contact finish: M20-9980645 features gold mating contacts, while M20-9980646 features tin mating contacts. Both are cuttable headers with identical operating temperature range (-40°C to 105°C) and current rating (3A per contact).

Q: Are there packaging differences among the substitute parts?

A: Yes. The Molex 0702871249 and Harwin parts are supplied in bulk packaging. The Hirose A1-12PA-2.54DSA(71) is supplied in tray packaging. Packaging format may affect handling, storage, and assembly processes.

Q: Do all substitute parts support the same operating temperature range?

A: No. The Molex 0702871249 does not specify an operating temperature range. The Hirose part operates from -55°C to 85°C, while both Harwin parts operate from -40°C to 105°C. Application-specific temperature requirements should guide part selection.

Q: Are current and voltage ratings specified for all parts?

A: The Molex 0702871249 does not specify current or voltage ratings. The Hirose part is rated at 3A and 200V. The Harwin parts are rated at 3A per contact with no voltage specification. Applications requiring specific electrical ratings should reference manufacturer datasheets.

Q: What does "cuttable" mean for the Harwin headers?

A: Cuttable headers allow individual positions to be separated or trimmed after assembly, providing design flexibility for applications requiring fewer than 12 positions. The Molex breakaway design and Hirose standard header do not offer this feature.

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