Molex 0702800721 Equivalent & Substitute Parts

Part Overview

The Molex 0702800721 is a rectangular connector header designed for through-hole mounting applications. This 26-position, 2-row connector with 0.100" (2.54mm) pitch serves board-to-board and cable interconnection requirements across automotive, medical, telecommunications, and general-purpose applications. The part is currently active in production with 636 units in stock. Substitute parts are identified to address supply chain continuity, design flexibility, and application-specific performance requirements while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Connector Type	Header, Breakaway
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	26
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Contact Shape	Square
Insulation Material	Liquid Crystal Polymer (LCP), Glass Filled
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following core parameters:

Pitch - Mating: 0.100" (2.54mm) — exact match required
Number of Positions: 26 — exact match required
Number of Rows: 2 — exact match required
Row Spacing - Mating: 0.100" (2.54mm) — exact match required
Connector Type: Header, Breakaway — exact match required
Contact Type: Male Pin — exact match required
Mounting Type: Through Hole — exact match required
Termination: Solder — exact match required
Fastening Type: Push-Pull — exact match required
Material Flammability Rating: UL94 V-0 — exact match required
RoHS Status: ROHS3 Compliant or RoHS Compliant — acceptable
Moisture Sensitivity Level (MSL): 1 (Unlimited) — exact match required

All identified substitute parts meet these mandatory criteria. Variations in contact finish, contact material, insulation material composition, and operating temperature ranges are permitted within the scope of substitution, as these parameters do not affect the fundamental mechanical and electrical interface compatibility.

Parameter Comparison

Parameter	Molex 0702800721	TE 6-146252-3	TE 6-146253-3	TE 6-146264-3	Amphenol 77313-127-26LF	Amphenol 77313-824-26LF	3M 929665-01-13-I
Manufacturer	Molex	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors	Amphenol ICC (FCI)	Amphenol ICC (FCI)	3M
Series	C-Grid 70280	AMPMODU Mod II	AMPMODU Mod II	AMPMODU Mod II	BERGSTIK®	BERGSTIK®	929
Product Status	Active	Active	Active	Obsolete	Active	Active	Active
Connector Type	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header, Breakaway	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	26	26	26	26	26	26	26
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)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Kinked Pin, Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Shape	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Tin	Gold	Gold	Gold	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold
Contact Material	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Phosphor Bronze	Phosphor Bronze	Copper Alloy
Insulation Material	Liquid Crystal Polymer (LCP), Glass Filled	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Thermoplastic	Thermoplastic	Polybutylene Terephthalate (PBT), Polyester, Glass Filled
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
Operating Temperature	Not specified	-65°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 130°C	-65°C ~ 130°C	-40°C ~ 105°C
Current Rating (Amps)	Not specified	3A	3A	3A	3A per Contact	3A per Contact	2.5A
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Inventory Status	636 Pcs New Original In Stock	64520 Pcs New Original In Stock	5523 Pcs New Original In Stock	1140 Pcs New Original In Stock	1143 Pcs New Original In Stock	893 Pcs New Original In Stock	7386 Pcs New Original In Stock

Engineering Selection Recommendations

Primary Substitutes (Active Status, Recommended for New Designs)

TE Connectivity 6-146252-3 and 6-146253-3 are the preferred substitutes. Both are active products with ROHS3 compliance and unlimited moisture sensitivity rating. These parts offer higher inventory availability (64520 and 5523 units respectively) and specified operating temperature range of -65°C to 105°C with 3A current rating per contact. The primary difference between these two TE parts is contact finish thickness on the mating surface (15.0µin vs. 30.0µin), which does not affect substitution eligibility.

Amphenol ICC 77313-127-26LF and 77313-824-26LF are active BERGSTIK® series alternatives with extended operating temperature range (-65°C to 130°C) and 3A per contact current rating. These parts use phosphor bronze contact material and thermoplastic insulation instead of LCP. Both are RoHS compliant with unlimited MSL rating. The primary difference is contact finish thickness on the mating surface (30.0µin vs. 15.0µin).

3M 929665-01-13-I is an active substitute with RoHS compliance and unlimited MSL rating. This part operates from -40°C to 105°C with 2.5A current rating and uses PBT polyester glass-filled insulation material.

Secondary Substitute (Obsolete Status, Not Recommended for New Designs)

TE Connectivity 6-146264-3 is marked as obsolete and should not be selected for new designs despite meeting all mechanical and electrical substitution criteria. This part is retained in the substitute list for legacy system support and repair applications only.

Compliance and Certification

All active substitute parts maintain UL94 V-0 material flammability rating and MSL 1 (Unlimited) moisture sensitivity level, matching the original Molex 0702800721. RoHS compliance is confirmed across all substitutes. REACH status varies between parts; TE 6-146252-3 shows vendor undefined status, while TE 6-146253-3 and Amphenol 77313-824-26LF are REACH Unaffected. Amphenol 77313-127-26LF is REACH Affected.

Frequently Asked Questions (FAQ)

Q: Can TE Connectivity 6-146252-3 and 6-146253-3 be used interchangeably with Molex 0702800721?

A: Yes. Both TE parts meet all mandatory substitution criteria: identical pitch (0.100"), position count (26), row configuration (2 rows), mounting type (through hole), termination (solder), and fastening type (push-pull). Both are ROHS3 compliant with MSL 1 rating. The difference in contact finish thickness (15.0µin vs. 30.0µin) does not affect mechanical or electrical interface compatibility.

Q: What is the difference between Amphenol 77313-127-26LF and 77313-824-26LF?

A: Both are BERGSTIK® series headers with identical pitch, position count, and row spacing. The primary difference is contact finish thickness on the mating surface: 77313-127-26LF has 30.0µin gold finish, while 77313-824-26LF has 15.0µin gold finish. Both operate from -65°C to 130°C and carry 3A per contact current rating. Both are mechanically and electrically interchangeable with the Molex 0702800721.

Q: Why is TE Connectivity 6-146264-3 listed as a substitute if it is obsolete?

A: The 6-146264-3 is included for legacy system support and repair applications where existing designs already incorporate this part. For new designs, active alternatives such as 6-146252-3 or 6-146253-3 are recommended. The obsolete status indicates that the manufacturer has discontinued production, making it unsuitable for long-term supply chain planning.

Q: Does the contact finish material (tin vs. gold) affect substitution eligibility?

A: Contact finish material and thickness are permitted to vary within the substitution scope. The Molex 0702800721 uses tin finish on mating contacts, while most substitutes use gold finish. Both finishes provide adequate electrical conductivity and corrosion resistance for the 0.100" pitch, 26-position header application. The choice between tin and gold finish is driven by application-specific requirements such as contact resistance, environmental exposure, and cost considerations, not by mechanical compatibility.

Q: Are there any thermal performance differences between substitute parts?

A: Yes. The Molex 0702800721 does not specify an operating temperature range. TE Connectivity substitutes (6-146252-3, 6-146253-3, 6-146264-3) operate from -65°C to 105°C. Amphenol BERGSTIK® parts (77313-127-26LF, 77313-824-26LF) extend to -65°C to 130°C. The 3M 929665-01-13-I operates from -40°C to 105°C. For applications requiring extended high-temperature operation, Amphenol BERGSTIK® series is the appropriate selection.

Q: What is the current rating difference between 3A and 2.5A substitutes?

A: TE Connectivity and Amphenol substitutes are rated at 3A per contact, while the 3M 929665-01-13-I is rated at 2.5A per contact. For applications requiring 3A per contact current capacity, the 3M part is not suitable. For applications with current requirements at or below 2.5A per contact, the 3M part is acceptable.

Q: Does insulation material variation affect mechanical compatibility?

A: No. The Molex 0702800721 uses LCP (Liquid Crystal Polymer) glass-filled insulation. Substitutes use LCP (TE parts), thermoplastic (Amphenol parts), or PBT polyester glass-filled (3M part). All materials meet UL94 V-0 flammability requirements and provide equivalent mechanical stability for the 0.100" pitch, 26-position through-hole header application. Material selection does not affect pin spacing, row configuration, or mounting compatibility.

Q: Is inventory availability a factor in substitute selection?

A: Inventory availability is a practical consideration for supply chain planning but does not affect electrical or mechanical compatibility. TE Connectivity 6-146252-3 has the highest inventory (64520 units), followed by 3M 929665-01-13-I (7386 units). For applications with immediate delivery requirements, higher-inventory substitutes may be preferred. For long-term production planning, all active substitutes are acceptable.

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