3M 2550-6002UB Equivalent & Substitute Parts

Part Overview

The 3M 2550-6002UB is a rectangular connector header with 50 vertical 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 gold-plated mating contacts and tin-lead post finishes, suitable for applications requiring 1.75A current capacity per contact and operating temperatures from -55°C to 105°C.

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)
Mounting Type	Through Hole
Shrouding	Shrouded - 4 Wall
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Contact Finish - Post	Tin-Lead
Operating Temperature	-55°C ~ 105°C
Current Rating	1.75A
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution for the 2550-6002UB is determined by strict equivalence in the following critical 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)
Mounting method (Through Hole)
Shrouding style (Shrouded - 4 Wall)
Fastening mechanism (Push-Pull)
Contact finish on mating surface (Gold)
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. Variations in contact material, insulation material, post finish composition, and compliance status are permitted within substitution groups, provided all critical parameters remain constant.

Parameter Comparison

Parameter	2550-6002UB (Main)	N2550-6002-RB	D2550-6002-AR	0702465002	0702465004	0878345011	0878345021	0878345041	1-103308-0	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)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
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
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold or Gold-Palladium	Gold or Gold-Palladium	Gold or Gold-Palladium
Contact Finish - Post	Tin-Lead	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Tin-Lead	Tin	Tin
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
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	Not specified	Not specified	Not specified	Not specified	Not specified	-65°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 105°C
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
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All listed substitute parts maintain functional equivalence to the 2550-6002UB across critical electrical and mechanical parameters. Selection among substitutes is determined by compliance requirements and product availability status.

For applications requiring RoHS3 compliance, the following parts are suitable: N2550-6002-RB, D2550-6002-AR, 0702465002, 0702465004, 0878345011, 0878345021, 0878345041, 1-5103308-0, and 1-5103309-0. All these parts are currently in active production status.

For applications where RoHS compliance is not mandated, 1-103308-0 remains available as an active product, though it carries RoHS non-compliant status identical to the original 2550-6002UB.

The 3M N2550-6002-RB represents the direct series replacement within the 3M 2500 family, offering the closest form-factor continuity. The 3M D2550-6002-AR provides an alternative within the D2500 series with modified insulation height specifications.

Molex C-Grid 70246 series (0702465002, 0702465004) and C-Grid 87834 series (0878345011, 0878345021, 0878345041) offer cross-manufacturer alternatives with established automotive, medical, and telecommunications application histories.

TE Connectivity AMP-Latch series (1-103308-0, 1-5103308-0, 1-5103309-0) provides extended operating temperature range (-65°C to 105°C) compared to the original specification (-55°C to 105°C).

Frequently Asked Questions (FAQ)

Q: What makes these parts functionally equivalent to the 2550-6002UB?

A: All substitute parts maintain identical specifications for connector type (header), contact type (male pin), mating pitch (2.54mm), position count (50), row configuration (2 rows), mounting method (through hole), shrouding (4-wall), fastening mechanism (push-pull), mating contact finish (gold), and flammability rating (UL94 V-0). These parameters define mechanical and electrical compatibility.

Q: Can I use a substitute part with different post finish (tin vs. tin-lead)?

A: Yes. The post finish does not affect mating compatibility. Both tin and tin-lead post finishes are acceptable for solder termination. The choice between them is determined by soldering process requirements and RoHS compliance mandates. Tin-lead finishes are associated with RoHS non-compliant parts, while tin finishes are standard in RoHS3 compliant alternatives.

Q: Are there packaging differences between substitute parts?

A: Yes. The original 2550-6002UB was supplied in unspecified packaging. Substitutes are available in bulk, tray, and tube packaging formats. Packaging selection affects handling, storage, and automated assembly compatibility but does not alter electrical or mechanical function.

Q: Why do some substitutes have different operating temperature ranges?

A: TE Connectivity AMP-Latch parts (1-103308-0, 1-5103308-0, 1-5103309-0) specify -65°C to 105°C, extending the lower temperature limit by 10°C compared to the original -55°C to 105°C specification. This represents an enhanced capability and does not restrict use in applications requiring the original temperature range.

Q: What is the difference between 1-103308-0 and 1-5103308-0?

A: Both are TE Connectivity AMP-Latch 50-position headers with identical mechanical and electrical specifications. The primary difference is RoHS compliance status: 1-103308-0 is RoHS non-compliant (matching the original part), while 1-5103308-0 is ROHS3 compliant. The "5" prefix in the part number indicates RoHS3 compliance.

Q: Can I mix substitute parts from different manufacturers in the same assembly?

A: Yes. All listed substitutes meet the same critical parameters and are mechanically and electrically interchangeable. However, design documentation should specify the selected part number to ensure procurement consistency and traceability.

Q: Which substitute offers the best long-term availability?

A: All listed substitutes carry active product status, indicating current production. TE Connectivity 1-5103308-0 and 1-5103309-0 show the highest inventory levels (6300 and 645 units respectively), suggesting strong supply chain support. For new designs, selection should prioritize parts with active status and RoHS3 compliance.

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