Molex 0702800748 Equivalent & Substitute Parts

Part Overview

The Molex 0702800748 is a vertical rectangular connector header with 80 positions arranged in 2 rows at 0.100" (2.54mm) pitch. This through-hole solder-terminated connector is designed for board-to-board or cable applications across automotive, general purpose, lighting, medical, and telecommunications sectors. The part is currently active in production with 1158 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling component interchangeability in applications where the original part becomes unavailable or when design requirements permit alternative contact finishes or insulation materials.

Key Parameters

Parameter	Value
Connector Type	Header, Breakaway
Contact Type	Male Pin
Number of Positions	80
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Style	Board to Board or Cable
Shrouding	Unshrouded
Material Flammability Rating	UL94 V-0
Insulation Color	Black
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the Molex 0702800748 are qualified based on the following critical parameters that must match or remain compatible:

Connector geometry: 80 positions, 2 rows, 0.100" (2.54mm) pitch and row spacing
Mounting and termination: Through-hole solder termination with push-pull fastening
Electrical interface: Male pin contact type for board-to-board or cable connection
Physical form factor: Unshrouded header configuration with breakaway capability
Environmental compliance: UL94 V-0 flammability rating and MSL 1 moisture sensitivity

The four substitute parts identified—3M 2380-6221-TG, Sullins PREC040DFAN-RC, Sullins PRPC040DFAN-RC, and Sullins PRPC040DFBN-RC—maintain these core parameters. Variations in contact finish (tin versus gold), contact material (copper alloy versus brass), insulation material (LCP versus PBT thermoplastic), and post length represent acceptable engineering differences that do not affect mechanical fit or basic electrical function in standard applications.

Parameter Comparison

Parameter	Molex 0702800748	3M 2380-6221-TG	Sullins PREC040DFAN-RC	Sullins PRPC040DFAN-RC	Sullins PRPC040DFBN-RC
Manufacturer	Molex	3M	Sullins Connector Solutions	Sullins Connector Solutions	Sullins Connector Solutions
Number of Positions	80	80	80	80	80
Number of Rows	2	2	2	2	2
Pitch - Mating	0.100" (2.54mm)	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)	0.100" (2.54mm)
Connector Type	Header, Breakaway	Header	Header, Breakaway	Header, Breakaway	Header, Breakaway
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Style	Board to Board or Cable	Board to Board or Cable	Board to Board or Cable	Board to Board or Cable	Board to Board or Cable
Shrouding	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded
Contact Length - Mating	0.320" (8.13mm)	0.318" (8.08mm)	0.318" (8.08mm)	0.318" (8.08mm)	0.318" (8.08mm)
Contact Length - Post	0.185" (4.70mm)	0.120" (3.05mm)	0.120" (3.05mm)	0.120" (3.05mm)	0.220" (5.58mm)
Overall Contact Length	0.595" (15.11mm)	0.538" (13.67mm)	0.537" (13.63mm)	0.537" (13.63mm)	0.637" (16.17mm)
Insulation Height	0.090" (2.29mm)	0.100" (2.54mm)	0.098" (2.50mm)	0.098" (2.50mm)	0.098" (2.50mm)
Contact Shape	Square	Square	Square	Square	Square
Contact Finish - Mating	Tin	Gold	Tin	Gold	Gold
Contact Material	Copper Alloy	Copper Alloy	Brass	Brass	Brass
Insulation Material	Liquid Crystal Polymer (LCP), Glass Filled	Thermoplastic, Glass Filled	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Insulation Color	Black	Black	Black	Black	Black
Operating Temperature	Not specified	-55°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Current Rating	Not specified	3A	3A per Contact	3A per Contact	3A per Contact
RoHS Status	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Affected	REACH Unaffected	REACH Unaffected	REACH Unaffected
Inventory (Pcs)	1158	1565	8014	4802	2254

Engineering Selection Recommendations

Molex 0702800748 (Original Part) Select this part when ROHS3 compliance and REACH unaffected status are mandatory requirements. The original specification provides the baseline reference for all mechanical and electrical parameters.

3M 2380-6221-TG This substitute offers the widest operating temperature range (-55°C to 105°C) and highest inventory availability (1565 units). However, this part is RoHS non-compliant and REACH affected, making it unsuitable for applications requiring regulatory compliance with current EU directives. Use only in legacy systems or applications where RoHS3 compliance is not required.

Sullins PREC040DFAN-RC This part maintains ROHS3 compliance and REACH unaffected status matching the original. It features tin-plated mating contacts and brass contact material with PBT insulation. The operating temperature range (-40°C to 105°C) is narrower than the 3M alternative but adequate for most industrial applications. Highest inventory availability among compliant substitutes (8014 units).

Sullins PRPC040DFAN-RC This part is functionally equivalent to PREC040DFAN-RC with identical electrical and mechanical specifications, but features gold-plated mating contacts and gold-plated posts. Gold plating provides enhanced corrosion resistance and contact reliability in demanding environments. ROHS3 compliant and REACH unaffected. Inventory: 4802 units.

Sullins PRPC040DFBN-RC This part differs from PRPC040DFAN-RC only in post length (0.220" versus 0.120"), providing extended solder tail for applications requiring deeper PCB penetration or longer lead length. Gold-plated contacts and posts. ROHS3 compliant and REACH unaffected. Inventory: 2254 units.

Frequently Asked Questions (FAQ)

Q: Can I substitute the Molex 0702800748 with any of these parts directly? A: Mechanical and electrical substitution is possible for all four alternatives based on matching pitch, position count, row configuration, and connector type. However, regulatory compliance differs. The Molex original, Sullins PREC040DFAN-RC, Sullins PRPC040DFAN-RC, and Sullins PRPC040DFBN-RC are ROHS3 compliant. The 3M 2380-6221-TG is not RoHS compliant and should not be used in new designs requiring regulatory compliance.

Q: What is the difference between tin and gold contact finishes? A: Tin-plated contacts (Molex 0702800748 and Sullins PREC040DFAN-RC) provide cost-effective performance for standard applications. Gold-plated contacts (Sullins PRPC040DFAN-RC and PRPC040DFBN-RC) offer superior corrosion resistance and contact reliability, particularly in high-reliability, medical, or aerospace applications where contact integrity is critical.

Q: Why do the Sullins parts have different post lengths? A: Post length determines solder tail depth into the PCB. The standard 0.120" post (PREC040DFAN-RC and PRPC040DFAN-RC) suits typical PCB thicknesses. The extended 0.220" post (PRPC040DFBN-RC) accommodates thicker PCBs or applications requiring longer lead length for mechanical support or rework accessibility.

Q: Are there temperature rating differences I should consider? A: The Molex original does not specify an operating temperature range. The 3M part operates from -55°C to 105°C (widest range). The three Sullins alternatives operate from -40°C to 105°C. For applications requiring sub-zero operation below -40°C, the 3M part is the only option, but compliance trade-offs apply.

Q: What does REACH Affected versus REACH Unaffected mean? A: REACH Unaffected parts contain no substances of very high concern (SVHC) on the REACH candidate list. REACH Affected parts may contain such substances and require additional documentation and compliance management. For EU market applications, REACH Unaffected status is preferred.

Q: Can I mix different substitute parts in the same assembly? A: Yes, all four substitutes are mechanically and electrically compatible with each other and with the original Molex part. However, for consistency in manufacturing, testing, and documentation, using a single part number per assembly is recommended.

Q: Which substitute offers the best value for general-purpose applications? A: The Sullins PREC040DFAN-RC provides ROHS3 compliance, REACH unaffected status, adequate operating temperature range (-40°C to 105°C), and the highest inventory availability (8014 units) at a cost-effective price point. This part is suitable for automotive, lighting, telecommunications, and general industrial applications.

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