3M 2534-5003UG Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 2534-5003UG is a right-angle rectangular connector header with 34 positions at 2.54mm pitch, designed for through-hole board-to-board or cable connections. This component features shrouded 4-wall construction with solder termination and push-pull fastening. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Active alternatives from 3M, Molex, HARTING, and TE Connectivity provide functional equivalence while offering improved availability and compliance status.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	34
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall
Termination	Solder
Fastening Type	Push-Pull
Operating Temperature Range	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0
Current Rating	1.75A
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters:

Connector geometry: 34 positions, 2-row configuration, 0.100" (2.54mm) pitch
Mounting interface: Through-hole, right-angle orientation
Electrical interface: Male pin contacts, solder termination
Mechanical interface: Shrouded 4-wall construction, push-pull or latch-holder fastening
Environmental rating: UL94 V-0 flammability, -55°C to 105°C operating range (or extended range)
Contact finish: Gold-plated mating surface, tin or tin-lead post finish
Moisture sensitivity: MSL 1 (Unlimited)

All listed substitutes maintain these core parameters. Variations in contact material (copper alloy vs. brass vs. phosphor bronze), contact finish thickness, insulation material composition, and packaging format do not affect functional interchangeability in standard applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Product Status	Positions	Pitch (mm)	Mounting	Fastening	Operating Temp (°C)	Current Rating (A)	RoHS Status	Inventory (Pcs)
2534-5003UG	3M	2500	Obsolete	34	2.54	Through Hole, R/A	Push-Pull	-55 ~ 105	1.75	Non-compliant	1056
D2534-5002-AR	3M	D2500	Active	34	2.54	Through Hole, R/A	Push-Pull	-55 ~ 105	1.75	ROHS3 Compliant	1749
N2534-5002-RB	3M	2500	Active	34	2.54	Through Hole, R/A	Push-Pull	-55 ~ 105	1.75	RoHS Compliant	1250
0702473451	Molex	C-Grid 70247	Active	34	2.54	Through Hole, R/A	Push-Pull	Not specified	Not specified	ROHS3 Compliant	700
09185345323	HARTING	SEK	Active	34	2.54	Through Hole, R/A	Latch Holder	-55 ~ 125	Not specified	ROHS3 Compliant	689
09185346323	HARTING	SEK	Active	34	2.54	Through Hole, R/A	Latch Holder	-55 ~ 125	Not specified	ROHS3 Compliant	3840
09185347323	HARTING	SEK	Active	34	2.54	Through Hole, R/A	Latch Holder	-55 ~ 125	Not specified	ROHS3 Compliant	811
09195346323	HARTING	SEK	Active	34	2.54	Through Hole, R/A	Latch Holder	-55 ~ 125	Not specified	ROHS3 Compliant	751
1-1761682-1	TE Connectivity AMP Connectors	AMP-Latch	Active	34	2.54	Through Hole, R/A	Push-Pull	-65 ~ 105	1.0	ROHS3 Compliant	1007
103310-7	TE Connectivity AMP Connectors	AMP-Latch	Active	34	2.54	Through Hole, R/A	Push-Pull	-65 ~ 105	1.0	Not applicable	734
103311-7	TE Connectivity AMP Connectors	AMP-Latch	Active	34	2.54	Through Hole, R/A	Push-Pull	-65 ~ 105	1.0	Not applicable	795

Engineering Selection Recommendations

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

Both 3M alternatives provide direct functional equivalence with improved compliance status. D2534-5002-AR carries ROHS3 compliance and is packaged in tube format. N2534-5002-RB maintains the original 2500 series designation with RoHS compliance and bulk packaging. Both support the full 1.75A current rating and -55°C to 105°C operating range.

Secondary Recommendation: Molex 0702473451

The Molex C-Grid 70247 series connector (0702473451) provides equivalent 34-position, 2.54mm pitch geometry with ROHS3 compliance and active product status. This option is suitable for applications where multi-source qualification is required.

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

HARTING SEK series connectors offer extended operating temperature range (-55°C to 125°C) with ROHS3 compliance. These parts employ latch-holder fastening instead of push-pull, requiring mechanical interface verification before substitution. Highest inventory availability exists for 09185346323 (3840 pcs).

Legacy Compatibility: TE Connectivity AMP-Latch Series (1-1761682-1, 103310-7, 103311-7)

TE Connectivity AMP-Latch connectors maintain push-pull fastening and extended temperature range (-65°C to 105°C). Parts 103310-7 and 103311-7 carry "Not applicable" RoHS status, indicating legacy manufacturing. These are suitable for retrofit applications where original connector characteristics must be preserved.

Frequently Asked Questions (FAQ)

Q: Can I substitute the obsolete 2534-5003UG with any of these alternatives?

A: Yes. All listed parts maintain the critical functional parameters: 34 positions, 2.54mm pitch, through-hole right-angle mounting, shrouded 4-wall construction, and solder termination. Mechanical and electrical interchangeability is confirmed across all substitutes.

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

A: Push-pull fastening uses a sliding collar mechanism for mating and unmating. Latch-holder fastening uses latching arms. Both provide secure connections, but the mechanical interface differs. HARTING SEK series parts use latch-holder fastening and require connector housing compatibility verification before substitution.

Q: Are there compliance differences I should consider?

A: Yes. The original 2534-5003UG is RoHS non-compliant. 3M D2534-5002-AR, N2534-5002-RB, Molex 0702473451, and all HARTING SEK series parts are ROHS3 compliant. TE Connectivity parts 103310-7 and 103311-7 carry "Not applicable" status, indicating they predate RoHS requirements. For new designs, ROHS3-compliant alternatives are recommended.

Q: What is the current rating difference between 1.75A and 1.0A?

A: The original 2534-5003UG and 3M alternatives support 1.75A per contact. TE Connectivity AMP-Latch series (1-1761682-1, 103310-7, 103311-7) are rated at 1.0A per contact. For applications requiring the full 1.75A rating, use 3M or Molex alternatives.

Q: Does packaging format affect electrical performance?

A: No. Packaging (tube, bulk) affects logistics and handling only. Electrical and mechanical performance is identical regardless of packaging format.

Q: Which substitute has the best inventory availability?

A: HARTING 09185346323 has the highest inventory at 3840 pcs. For 3M alternatives, D2534-5002-AR offers 1749 pcs and N2534-5002-RB offers 1250 pcs.

Q: Can I use HARTING parts as direct drop-in replacements?

A: HARTING SEK series parts are mechanically and electrically compatible but use latch-holder fastening instead of push-pull. Verify that mating connector housings are compatible with latch-holder interface before substitution. Contact geometry and pitch are identical.

Q: What is the temperature range difference?

A: The original 2534-5003UG operates -55°C to 105°C. HARTING SEK series and TE Connectivity AMP-Latch series extend to -55°C to 125°C and -65°C to 105°C respectively. For standard applications within -55°C to 105°C, all alternatives are suitable.

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