Molex 0878345041 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The Molex 0878345041 is an active rectangular connector header designed for through-hole mounting applications. This 50-position, 2-row shrouded header with 0.100" (2.54mm) pitch serves general purpose, automotive, lighting, medical, and telecommunications applications. Finding equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and accommodate specific compliance or performance requirements across different manufacturing environments.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	50
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Shrouding	Shrouded - 4 Wall
Fastening Type	Push-Pull
Contact Shape	Square
Material Flammability Rating	UL94 V-0
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitution of the Molex 0878345041 is determined by strict alignment of the following electrical and mechanical parameters:

Connector type (Header), contact type (Male Pin), and contact shape (Square)
Position count (50) and row configuration (2 rows)
Mating pitch and row spacing (0.100" / 2.54mm)
Mounting method (Through Hole) and termination type (Solder)
Shrouding configuration (Shrouded - 4 Wall)
Fastening mechanism (Push-Pull)
Flammability rating (UL94 V-0)
MSL rating (1 - Unlimited)

The four substitute parts listed—TE Connectivity 1-103308-0, TE Connectivity 1-103309-0, 3M D2550-6002-AR, and 3M N2550-6002-RB—meet these core requirements. Variations in contact finish thickness, insulation height, contact length specifications, and compliance certifications are secondary parameters that may influence selection based on application-specific needs.

Parameter Comparison

Parameter	Molex 0878345041	TE Connectivity 1-103308-0	TE Connectivity 1-103309-0	3M D2550-6002-AR	3M N2550-6002-RB
Manufacturer	Molex	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors	3M	3M
Series	C-Grid 87834	AMP-Latch	AMP-Latch	D2500	2500
Connector Type	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Number of Positions	50	50	50	50	50
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)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Shape	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold or Gold-Palladium	Gold or Gold-Palladium	Gold	Gold
Contact Finish - Post	Tin	Tin-Lead	Tin-Lead	Tin	Tin
Contact Material	Copper Alloy	Brass	Brass	Brass	Copper Alloy
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	RoHS non-compliant	RoHS non-compliant	RoHS Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Affected	REACH Affected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All four substitute parts maintain active product status and meet the core mechanical and electrical requirements for direct substitution with the Molex 0878345041.

For applications requiring RoHS3 compliance and REACH unaffected status, the 3M N2550-6002-RB is the optimal choice, matching the Molex part's compliance profile exactly.

For applications where RoHS compliance is required but REACH status is not a constraint, the 3M D2550-6002-AR provides RoHS compliance with REACH unaffected status.

The TE Connectivity 1-103308-0 and 1-103309-0 are suitable for applications where RoHS and REACH compliance are not mandatory requirements. These parts differ primarily in contact finish thickness on the mating surface (15.0µin versus 30.0µin) and offer extended operating temperature range (-65°C to 105°C) compared to the Molex specification.

Frequently Asked Questions (FAQ)

Q: Can I substitute the Molex 0878345041 with any of these four parts without PCB redesign?

A: Yes. All substitute parts share identical mating pitch (0.100" / 2.54mm), row spacing, position count (50), row configuration (2), mounting type (Through Hole), and shrouding (Shrouded - 4 Wall). PCB footprints designed for the Molex part will accommodate these substitutes.

Q: What is the difference between the two TE Connectivity parts (1-103308-0 and 1-103309-0)?

A: Both are mechanically and electrically identical. The primary difference is contact finish thickness on the mating surface: 1-103308-0 has 15.0µin (0.38µm) while 1-103309-0 has 30.0µin (0.76µm). Both use Tin-Lead post finish and operate across -65°C to 105°C.

Q: Which substitute part should I select if RoHS3 compliance is mandatory?

A: The 3M N2550-6002-RB is ROHS3 compliant and REACH unaffected, matching the Molex 0878345041 compliance profile. The 3M D2550-6002-AR is RoHS compliant but not specifically ROHS3 certified.

Q: Are there packaging differences between these parts?

A: Yes. The Molex 0878345041 ships in Tray packaging. TE Connectivity parts (1-103308-0 and 1-103309-0) ship in Tube packaging. The 3M D2550-6002-AR ships in Tray packaging, while the 3M N2550-6002-RB ships in Bulk packaging. Verify packaging requirements with your procurement process.

Q: What contact material differences exist, and do they affect substitution?

A: The Molex and 3M N2550-6002-RB use Copper Alloy contacts, while TE Connectivity and 3M D2550-6002-AR use Brass contacts. Both materials are acceptable for the specified 0.100" (2.54mm) pitch header application and do not prevent substitution.

Q: Do all parts support the same current rating?

A: The Molex 0878345041 does not specify a current rating. TE Connectivity parts are rated at 1A per contact. The 3M parts are rated at 1.75A. For applications requiring specific current handling, verify the 3M parts' higher rating meets your design requirements.

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