3M 2534-50K2UG Equivalent & Substitute Parts

Part Overview

The 3M 2534-50K2UG is a rectangular connector header with right-angle mounting, 34 positions, and 2.54mm pitch designed for through-hole soldering applications. This connector features shrouded 4-wall construction with male pins and push-pull fastening. The part is classified as obsolete, necessitating identification of active equivalent and substitute components that maintain electrical and mechanical compatibility for board-to-board or board-to-cable interconnection applications.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	34
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall
Termination	Solder
Operating Temperature	-55°C ~ 105°C
Current Rating	1.75A
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution of the 2534-50K2UG is determined by strict equivalence in the following parameters:

Mating pitch: 0.100" (2.54mm)
Number of positions: 34
Number of rows: 2
Row spacing: 0.100" (2.54mm)
Connector type: Header with male pins
Mounting: Through hole, right angle
Shrouding: Shrouded 4-wall construction
Termination: Solder
Fastening type: Push-Pull or Latch Holder
Material flammability: UL94 V-0

Substitute parts are grouped into two categories based on manufacturer and product status:

Category 1: 3M Active Equivalents – Direct series upgrades with improved RoHS compliance and material specifications.

Category 2: Cross-Manufacturer Alternatives – Functionally equivalent headers from Molex, HARTING, and TE Connectivity that meet the same electrical and mechanical requirements.

Parameter Comparison

Part Number	Manufacturer	Product Status	Pitch (mm)	Positions	Rows	Mounting	Fastening Type	Operating Temp (°C)	Current Rating (A)	RoHS Status
2534-50K2UG	3M	Obsolete	2.54	34	2	Through Hole, R/A	Push-Pull	-55 ~ 105	1.75	Non-compliant
D2534-5002-AR	3M	Active	2.54	34	2	Through Hole, R/A	Push-Pull	-55 ~ 105	1.75	ROHS3 Compliant
N2534-5002-RB	3M	Active	2.54	34	2	Through Hole, R/A	Push-Pull	-55 ~ 105	1.75	RoHS Compliant
0702473451	Molex	Active	2.54	34	2	Through Hole, R/A	Push-Pull	-	-	ROHS3 Compliant
09185345323	HARTING	Active	2.54	34	2	Through Hole, R/A	Latch Holder	-55 ~ 125	-	ROHS3 Compliant
09185346323	HARTING	Active	2.54	34	2	Through Hole, R/A	Latch Holder	-55 ~ 125	-	ROHS3 Compliant
09185347323	HARTING	Active	2.54	34	2	Through Hole, R/A	Latch Holder	-55 ~ 125	-	ROHS3 Compliant
09195346323	HARTING	Active	2.54	34	2	Through Hole, R/A	Latch Holder	-55 ~ 125	-	ROHS3 Compliant
1-1761682-1	TE Connectivity	Active	2.54	34	2	Through Hole, R/A	Push-Pull	-65 ~ 105	1.0	ROHS3 Compliant
103310-7	TE Connectivity	Active	2.54	34	2	Through Hole, R/A	Push-Pull	-65 ~ 105	1.0	Not applicable
103311-7	TE Connectivity	Active	2.54	34	2	Through Hole, R/A	Push-Pull	-65 ~ 105	1.0	Not applicable

Engineering Selection Recommendations

Primary Recommendation: 3M D2534-5002-AR or N2534-5002-RB

Both parts are active 3M products maintaining the original 2.54mm pitch, 34-position, 2-row configuration with identical mounting and termination specifications. D2534-5002-AR is ROHS3 compliant and represents the current D2500 series evolution. N2534-5002-RB is RoHS compliant and maintains the 2500 series designation. Both support 1.75A current rating and -55°C to 105°C operating range. Selection between these depends on supply chain availability and RoHS compliance requirements for your application.

Secondary Recommendation: Molex 0702473451

The Molex C-Grid 70247 series connector provides functional equivalence with identical pitch, position count, and right-angle through-hole mounting. This part is ROHS3 compliant and actively produced. Contact geometry and insulation material differ slightly from the 3M original, but electrical and mechanical interfaces remain compatible.

Alternative Recommendation: HARTING SEK Series (09185345323, 09185346323, 09185347323, 09195346323)

HARTING SEK series connectors provide equivalent 34-position, 2.54mm pitch headers with extended operating temperature range (-55°C to 125°C). These parts use latch holder fastening instead of push-pull, which affects mating force characteristics. All variants are ROHS3 compliant and actively produced. Selection among SEK variants depends on insulation material and color requirements for your application.

Tertiary Recommendation: TE Connectivity AMP-Latch Series (1-1761682-1, 103310-7, 103311-7)

TE Connectivity AMP-Latch series headers maintain 2.54mm pitch and 34-position configuration with push-pull fastening. These parts support extended operating temperature range (-65°C to 105°C) and are actively produced. Current rating is 1.0A per contact, which is lower than the original 1.75A specification. Parts 103310-7 and 103311-7 carry RoHS non-applicable status due to manufacturing date, while 1-1761682-1 is ROHS3 compliant.

Frequently Asked Questions (FAQ)

Q: Can I directly replace 2534-50K2UG with D2534-5002-AR?

A: Yes. Both parts share identical mating pitch (2.54mm), position count (34), row configuration (2 rows), mounting type (through-hole right-angle), and termination method (solder). The D2534-5002-AR is the active equivalent with improved RoHS compliance and represents the current 3M offering for this connector class.

Q: What is the difference between push-pull and latch holder fastening?

A: Push-pull fastening uses a sliding mechanism for mating and unmating. Latch holder fastening uses a latching mechanism that requires deliberate release. Both provide secure connections, but they differ in mating force and disconnection procedure. The original 2534-50K2UG uses push-pull fastening; HARTING SEK series uses latch holder fastening.

Q: Are HARTING SEK series connectors compatible with my existing mating connectors?

A: HARTING SEK series connectors maintain the same 2.54mm pitch, 34-position, 2-row configuration and shrouded 4-wall design. However, the latch holder fastening mechanism differs from the original push-pull design. Mechanical compatibility depends on whether your mating connector accommodates latch holder engagement. Electrical compatibility is maintained.

Q: Why do some substitute parts show no current rating?

A: Current rating specifications are not provided in the technical data for certain parts. This does not indicate inadequate current capacity; it reflects incomplete specification documentation. Contact the manufacturer for detailed electrical ratings when current capacity is critical to your application.

Q: Is the TE Connectivity 1A per contact rating sufficient for my application?

A: The original 2534-50K2UG supports 1.75A total current rating. TE Connectivity AMP-Latch series supports 1.0A per contact. If your application requires the full 1.75A capacity, verify that the TE Connectivity alternative meets your current distribution requirements across the 34 positions.

Q: What packaging options are available?

A: The original 2534-50K2UG is supplied in bulk packaging. Substitute parts are available in tube packaging (D2534-5002-AR) or bulk packaging (N2534-5002-RB, Molex 0702473451, HARTING series, TE Connectivity series). Packaging selection affects order quantities and handling procedures but does not affect electrical or mechanical performance.

Q: Are all substitute parts RoHS compliant?

A: Most active substitute parts are ROHS3 compliant. The original 2534-50K2UG is RoHS non-compliant. TE Connectivity parts 103310-7 and 103311-7 carry RoHS non-applicable status. Verify RoHS compliance requirements for your specific application and supply chain regulations before final part selection.

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