3M 2550-6002UG Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 2550-6002UG is a vertical rectangular connector header with 50 positions at 2.54mm pitch, designed for through-hole board-to-board or cable connections. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The connector features shrouded 4-wall construction with solder termination and push-pull fastening, suitable for applications requiring reliable mating cycles and keyed alignment.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	50
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Shrouding	Shrouded - 4 Wall
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Operating Temperature	-55°C ~ 105°C
Current Rating	1.75A
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution for the 2550-6002UG is determined by strict equivalence in the following parameters:

Connector type (Header)
Contact type (Male Pin)
Mating pitch (0.100" / 2.54mm)
Position count (50 positions)
Row configuration (2 rows)
Row spacing (0.100" / 2.54mm)
Shrouding style (Shrouded - 4 Wall)
Mounting method (Through Hole)
Termination method (Solder)
Fastening mechanism (Push-Pull)
Flammability rating (UL94 V-0)

Substitute parts are grouped into two categories: direct 3M series replacements and cross-manufacturer alternatives from Molex and TE Connectivity. All listed substitutes maintain the core electrical and mechanical interface specifications required for functional compatibility.

Parameter Comparison

Parameter	2550-6002UG (Main)	N2550-6002-RB	D2550-6002-AR	0702465002	0702465004	0878345011	0878345021	0878345041	1-103309-0	1-5103308-0	1-5103309-0
Manufacturer	3M	3M	3M	Molex	Molex	Molex	Molex	Molex	TE Connectivity	TE Connectivity	TE Connectivity
Connector Type	Header	Header	Header	Header	Header	Header	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	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)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Positions	50	50	50	50	50	50	50	50	50	50	50
Number of Rows	2	2	2	2	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)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-	-	-	-	-	-65°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

3M Series Substitutes (Direct Manufacturer Alternatives)

N2550-6002-RB is the primary 3M substitute, offering active product status with ROHS3 compliance. This part maintains identical electrical and mechanical specifications to the obsolete 2550-6002UG while providing improved regulatory compliance. Packaging is bulk format.

D2550-6002-AR represents the 3M D2500 series alternative, also active with RoHS compliance. This variant is packaged in tray format and maintains full functional compatibility. The D2500 series designation indicates a design evolution within the 3M product line.

Molex C-Grid Series Substitutes

The Molex C-Grid 70246 series (0702465002 and 0702465004) provides cross-manufacturer equivalence with ROHS3 compliance and active product status. Both variants maintain the required 50-position, 2.54mm pitch configuration. The 0702465002 is supplied in bulk packaging, while 0702465004 is supplied in tray format. These parts are qualified for automotive, general purpose, lighting, medical, and telecommunications applications.

The Molex C-Grid 87834 series (0878345011, 0878345021, and 0878345041) offers additional alternatives with ROHS3 compliance and active status. All three variants are tray-packaged and include board guide features. Insulation color varies: 0878345011 features beige insulation, while 0878345021 and 0878345041 feature natural insulation. These parts are also qualified for automotive, general purpose, lighting, medical, and telecommunications applications.

TE Connectivity AMP-Latch Series Substitutes

The TE Connectivity 1-103309-0 provides an alternative with active product status but RoHS non-compliance, matching the regulatory status of the original 2550-6002UG. This part is tube-packaged and operates across an extended temperature range of -65°C to 105°C.

The TE Connectivity 1-5103308-0 and 1-5103309-0 represent ROHS3-compliant variants of the AMP-Latch series with active product status. Both are tube-packaged and support the extended -65°C to 105°C operating temperature range. The 1-5103308-0 has higher inventory availability (6300 units) compared to 1-5103309-0 (645 units).

Compliance Considerations

For applications requiring RoHS compliance, the N2550-6002-RB, D2550-6002-AR, Molex C-Grid variants (0702465002, 0702465004, 0878345011, 0878345021, 0878345041), and TE Connectivity ROHS3-compliant variants (1-5103308-0, 1-5103309-0) are appropriate selections.

For legacy applications where RoHS non-compliance is acceptable, the 1-103309-0 provides an alternative with extended temperature range capability.

Frequently Asked Questions (FAQ)

Q: Can the N2550-6002-RB directly replace the obsolete 2550-6002UG?

A: Yes. The N2550-6002-RB maintains identical electrical and mechanical specifications including 50 positions, 2.54mm pitch, 2-row configuration, shrouded 4-wall construction, through-hole mounting, solder termination, and push-pull fastening. The primary difference is active product status and ROHS3 compliance.

Q: What is the difference between the 3M N2550-6002-RB and D2550-6002-AR?

A: Both parts are functionally equivalent and maintain the required 50-position, 2.54mm pitch interface. The primary differences are packaging format (N2550-6002-RB is bulk; D2550-6002-AR is tray) and series designation (N2500 versus D2500). Both are active products with RoHS compliance.

Q: Are Molex C-Grid 70246 and C-Grid 87834 series parts interchangeable?

A: Yes, both Molex series maintain the required 50-position, 2.54mm pitch, 2-row configuration, shrouded 4-wall construction, and push-pull fastening. The C-Grid 87834 series includes board guide features not present in the C-Grid 70246 series. Insulation material and color differ between series but do not affect electrical or mechanical compatibility.

Q: What packaging options are available for substitutes?

A: Substitutes are available in three packaging formats: bulk (N2550-6002-RB, 0702465002), tray (D2550-6002-AR, 0702465004, 0878345011, 0878345021, 0878345041), and tube (1-103309-0, 1-5103308-0, 1-5103309-0). Packaging selection depends on procurement volume and handling requirements.

Q: Do all substitutes support the same operating temperature range?

A: The 3M substitutes (N2550-6002-RB, D2550-6002-AR) and Molex C-Grid series maintain the -55°C to 105°C range specified for the original part. TE Connectivity AMP-Latch series parts (1-103309-0, 1-5103308-0, 1-5103309-0) support an extended range of -65°C to 105°C, providing additional margin for low-temperature applications.

Q: Which substitute offers the best RoHS compliance status?

A: All Molex C-Grid variants and TE Connectivity 1-5103308-0 and 1-5103309-0 are ROHS3 compliant. The 3M N2550-6002-RB and D2550-6002-AR are RoHS compliant. For applications requiring the highest compliance standard, ROHS3-compliant parts are recommended.

Q: Are there inventory considerations when selecting a substitute?

A: Yes. The TE Connectivity 1-5103308-0 has the highest inventory availability at 6300 units. The 3M N2550-6002-RB has 1098 units, D2550-6002-AR has 1880 units, and Molex variants range from 699 to 1190 units. TE Connectivity 1-5103309-0 has the lowest availability at 645 units.

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