Molex 0702800751 Equivalent & Substitute Parts

Part Overview

The Molex 0702800751 is a rectangular connector header designed for through-hole mounting applications. This vertical 6-position connector operates at 0.100" (2.54mm) pitch and features a 2-row configuration with unshrouded design. The part is classified as Active status and is widely used in automotive, general purpose, lighting, medical, and telecommunications applications. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling direct board-level replacement without design modification.

Key Parameters

Parameter	Value
Connector Type	Header, Breakaway
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	6
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Shrouding	Unshrouded
Contact Shape	Square
Insulation Material	Liquid Crystal Polymer (LCP), Glass Filled
Material Flammability Rating	UL94 V-0
Insulation Color	Black
Moisture Sensitivity Level (MSL)	1 (Unlimited)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0702800751 is determined by strict alignment of the following critical parameters:

Pitch - Mating: 0.100" (2.54mm)
Number of Positions: 6
Number of Rows: 2
Row Spacing - Mating: 0.100" (2.54mm)
Connector Type: Header
Contact Type: Male Pin
Mounting Type: Through Hole
Termination: Solder
Fastening Type: Push-Pull
Shrouding: Unshrouded
Contact Shape: Square
Material Flammability Rating: UL94 V-0
Insulation Color: Black
Moisture Sensitivity Level (MSL): 1 (Unlimited)

All identified substitute parts meet these core electrical and mechanical requirements. Variations in contact length, insulation height, contact finish composition, and material type do not prevent functional substitution at the board level, provided the mating interface dimensions remain compatible.

Parameter Comparison

Parameter	Molex 0702800751	3M 2306-6221-TG	TE Connectivity 87227-3	3M 929665-01-03-I	3M 929836-01-03	3M 929836-01-03-RK	3M 929836-09-03-RK
Manufacturer	Molex	3M	TE Connectivity AMP Connectors	3M	3M	3M	3M
Series	C-Grid 70280	2300	AMPMODU Mod II	929	929	929	929
Connector Type	Header, Breakaway	Header	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Positions	6	6	6	6	6	6	6
Number of Rows	2	2	2	2	2	2	2
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Positions Loaded	All	All	All	All	All	All	All
Style	Board to Board or Cable	Board to Board or Cable	Board to Board or Cable	Board to Board	Board to Board	Board to Board	Board to Board
Shrouding	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Length - Mating	0.320" (8.13mm)	0.318" (8.08mm)	0.318" (8.08mm)	0.235" (5.97mm)	0.235" (5.97mm)	0.235" (5.97mm)	0.235" (5.97mm)
Contact Length - Post	0.185" (4.70mm)	0.120" (3.05mm)	0.125" (3.18mm)	0.110" (2.79mm)	0.110" (2.79mm)	0.110" (2.79mm)	0.145" (3.68mm)
Overall Contact Length	0.595" (15.11mm)	0.538" (13.67mm)	0.533" (14.65mm)	0.445" (11.30mm)	0.445" (11.30mm)	0.445" (11.30mm)	0.480" (12.19mm)
Insulation Height	0.090" (2.29mm)	0.100" (2.54mm)	0.090" (2.29mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Contact Shape	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold	Gold	Tin-Lead	Tin	Tin
Contact Finish Thickness - Mating	15.0µin (0.38µm)	10.0µin (0.25µm)	15.0µin (0.38µm)	10.0µin (0.25µm)	100.0µin (2.54µm)	200.0µin (5.08µm)	200.0µin (5.08µm)
Contact Finish - Post	Tin	Tin-Lead	Gold	Gold	Not Specified	Tin	Tin
Contact Material	Copper Alloy	Copper Alloy	Phosphor Bronze	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy
Insulation Material	Liquid Crystal Polymer (LCP), Glass Filled	Thermoplastic, Glass Filled	Thermoplastic	Polybutylene Terephthalate (PBT), Polyester, Glass Filled	Polybutylene Terephthalate (PBT), Polyester, Glass Filled	Polycyclohexylenedimethylene Terephthalate (PCT)	Polycyclohexylenedimethylene Terephthalate (PCT)
Operating Temperature	Not Specified	-55°C ~ 105°C	-65°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Current Rating (Amps)	Not Specified	3A	3A	2.5A	2.5A	2.5A	2.5A
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Insulation Color	Black	Black	Black	Black	Black	Black	Black
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	Not Applicable
RoHS Status	ROHS3 Compliant	RoHS non-compliant	Not applicable	RoHS Compliant	RoHS non-compliant	RoHS Compliant	RoHS Compliant
REACH Status	Not Specified	REACH Affected	REACH Affected	REACH Unaffected	REACH Affected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

RoHS Compliance Consideration: The Molex 0702800751 is ROHS3 Compliant. Among the substitute parts, 3M 929665-01-03-I, 3M 929836-01-03-RK, and 3M 929836-09-03-RK are RoHS Compliant. The 3M 2306-6221-TG and 3M 929836-01-03 are RoHS non-compliant. TE Connectivity 87227-3 has not applicable RoHS status. For applications requiring RoHS compliance, select from the compliant alternatives.

REACH Status Consideration: The 3M 929665-01-03-I, 3M 929836-01-03-RK, and 3M 929836-09-03-RK are REACH Unaffected. The 3M 2306-6221-TG, TE Connectivity 87227-3, and 3M 929836-01-03 are REACH Affected. For applications subject to REACH regulations, prioritize REACH Unaffected parts.

Contact Finish Compatibility: The original Molex part features gold mating contact finish with tin post finish. Substitute parts with gold mating finish (3M 2306-6221-TG, TE Connectivity 87227-3, 3M 929665-01-03-I) provide closest electrical and corrosion resistance characteristics. Parts with tin or tin-lead mating finish (3M 929836-01-03, 3M 929836-01-03-RK, 3M 929836-09-03-RK) are functionally compatible but exhibit different contact resistance and oxidation profiles.

Contact Length Variation: The original part has a mating contact length of 0.320" (8.13mm). The 3M 2306-6221-TG and TE Connectivity 87227-3 provide the closest match at 0.318" (8.08mm). The 3M 929 series parts have shorter mating contact lengths of 0.235" (5.97mm), which may affect mating force and insertion depth characteristics. Verify board-level clearance and connector housing compatibility before selection.

Insulation Material Variation: The original part uses Liquid Crystal Polymer (LCP) with glass fill. Substitute parts employ Thermoplastic, PBT, or PCT materials. These materials maintain UL94 V-0 flammability rating and are functionally equivalent for board-level applications.

Frequently Asked Questions (FAQ)

Q: Can I substitute the Molex 0702800751 with any of the listed parts directly on my PCB?

A: Direct substitution is possible at the mating interface level, provided your PCB footprint accommodates the dimensional variations in contact length and insulation height. The 3M 2306-6221-TG and TE Connectivity 87227-3 offer the closest dimensional match. The 3M 929 series parts have shorter overall contact lengths and may require footprint verification.

Q: What is the impact of different contact finish materials on connector performance?

A: Gold-finished contacts (original Molex part and 3M 2306-6221-TG, TE Connectivity 87227-3, 3M 929665-01-03-I) provide superior corrosion resistance and lower contact resistance. Tin or tin-lead finished contacts (3M 929836-01-03, 3M 929836-01-03-RK, 3M 929836-09-03-RK) are suitable for general-purpose applications but may exhibit higher contact resistance and oxidation over extended storage or environmental exposure.

Q: Does RoHS compliance matter for my application?

A: RoHS compliance is mandatory for products sold in the European Union and many other regulated markets. If your application requires RoHS compliance, select from 3M 929665-01-03-I, 3M 929836-01-03-RK, or 3M 929836-09-03-RK. The Molex 0702800751 is ROHS3 Compliant, so these alternatives maintain regulatory alignment.

Q: What is the difference between the 3M 929836-01-03-RK and 929836-09-03-RK parts?

A: Both parts are from the 3M 929 series with identical electrical specifications and RoHS compliance. The primary difference is contact length post dimension: 929836-01-03-RK has 0.110" (2.79mm) post length, while 929836-09-03-RK has 0.145" (3.68mm) post length. Select based on your PCB thickness and solder joint depth requirements.

Q: Are there any temperature rating differences I should consider?

A: The original Molex part does not specify an operating temperature range. Substitute parts operate between -40°C to -65°C minimum and 105°C maximum. The TE Connectivity 87227-3 offers the widest range at -65°C to 105°C. For applications outside the -40°C to 105°C range, verify compatibility with your specific thermal requirements.

Q: Can I use parts with different insulation materials interchangeably?

A: Yes. All substitute parts maintain UL94 V-0 flammability rating and equivalent electrical insulation properties. Material differences (LCP, Thermoplastic, PBT, PCT) do not affect functional compatibility at the board level, though they may differ in mechanical rigidity and environmental resistance characteristics.

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