3M 3429-5002 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3429-5002 is a through-hole, right-angle rectangular connector header with 26 positions at 0.100" (2.54mm) pitch. This component is classified as obsolete, with 1434 units currently in stock. The 3000 series shrouded 4-wall header features male pins, solder termination, and push-pull fastening, designed for board-to-board or cable interconnection applications. Due to its obsolete status, equivalent and substitute parts from active product lines are necessary for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	26
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	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0
Current Rating	1.75A
Contact Finish - Mating	Gold
Contact Finish - Post	Tin-Lead
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 3429-5002 is determined by strict alignment with the following core parameters:

Connector Type & Configuration: Header, male pin, 26 positions, 2 rows
Pitch Specification: 0.100" (2.54mm) mating pitch and row spacing
Mounting & Orientation: Through-hole, right-angle mounting
Shrouding & Fastening: Shrouded 4-wall design with push-pull fastening
Electrical Performance: 1.75A current rating, solder termination
Environmental Compliance: UL94 V-0 flammability rating, MSL 1

Substitute parts are grouped into two categories:

Category A - Direct 3M Series Equivalents: Parts N3429-5002RB and D3429-5002-AR maintain identical mechanical and electrical specifications while offering improved compliance status (ROHS3 compliant vs. non-compliant original).

Category B - Cross-Manufacturer Alternatives: HARTING SEK series (09185265921, 09185265923, 09185266921, 09185266923, 09185267921, 09185267923) and Amphenol ICC Quickie™ series (65823-073, 71922-026LF) provide functional equivalence with variations in contact post length, insulation material, and fastening mechanism.

Parameter Comparison

Parameter	3429-5002	N3429-5002RB	D3429-5002-AR	09185265921	09185265923	65823-073	71922-026LF
Manufacturer	3M	3M	3M	HARTING	HARTING	Amphenol ICC	Amphenol ICC
Connector Type	Header	Header	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Positions	26	26	26	26	26	26	26
Rows	2	2	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)	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)	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Latch Lock/Eject Hooks	Push-Pull
Contact Length - Mating	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.230" (5.84mm)	0.228" (5.80mm)
Contact Length - Post	0.112" (2.84mm)	0.112" (2.84mm)	0.112" (2.84mm)	0.177" (4.50mm)	0.114" (2.90mm)	0.105" (2.67mm)	0.114" (2.90mm)
Insulation Height	0.340" (8.64mm)	0.340" (8.64mm)	0.340" (8.64mm)	0.335" (8.51mm)	0.335" (8.51mm)	0.305" (7.75mm)	0.339" (8.61mm)
Contact Shape	Square	Square	Square	Square	Square	Circular	Square
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold or Gold, GXT™	Gold, GXT™
Contact Finish Thickness - Mating	30.0µin (0.76µm)	30.0µin (0.76µm)	10.0µin (0.25µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)
Contact Finish - Post	Tin-Lead	Tin	Tin	Tin	Tin	Not specified	Tin
Contact Material	Copper Alloy	Copper Alloy	Brass	Copper Alloy	Copper Alloy	Phosphor Bronze Alloy	Phosphor Bronze
Insulation Material	PCT, Polyester, Glass Filled	PCT, Polyester, Glass Filled	PCT, Polyester, Glass Filled	PBT, Glass Filled	PBT, Glass Filled	Polyester, Glass Filled	Thermoplastic, Glass Filled
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	Not specified	Not specified
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Current Rating	1.75A	1.75A	1.75A	Not specified	Not specified	Not specified	Not specified
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Non-compliant	Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Recommendation - 3M N3429-5002RB: This part provides direct functional equivalence to the 3429-5002 with identical mechanical and electrical specifications. The transition from tin-lead to tin post finish and ROHS3 compliance status make this the preferred direct replacement within the 3M product ecosystem. Active product status ensures long-term availability.

Secondary Recommendation - 3M D3429-5002-AR: Offers equivalent performance with ROHS3 compliance and active status. The D3000 series variant features brass contact material and reduced mating finish thickness (10.0µin vs. 30.0µin). Tray packaging differs from bulk, which may affect procurement workflows.

Cross-Manufacturer Alternatives - HARTING SEK Series (09185265921, 09185265923, 09185266921, 09185266923, 09185267921, 09185267923): These parts maintain core mechanical compatibility with extended operating temperature range (-55°C to 125°C vs. -55°C to 105°C). Contact post length variations (0.177" or 0.114") require PCB design verification. PBT insulation material and gray color differ from original specifications. ROHS3 compliance and active status support modern supply chains.

Alternative - Amphenol ICC 71922-026LF: Quickie™ series push-pull header with square contacts and tin post finish. Maintains mechanical compatibility with minor contact length variation (0.114" vs. 0.112"). RoHS compliant with active status. Tube packaging differs from bulk.

Not Recommended - Amphenol ICC 65823-073: Circular contact geometry and latch lock/eject hook fastening deviate from push-pull specification. Insulation height (0.305") and contact length (0.230" mating, 0.105" post) fall outside acceptable tolerance ranges. RoHS non-compliant status limits suitability for new designs.

Frequently Asked Questions (FAQ)

Q: Can N3429-5002RB be used as a direct drop-in replacement for 3429-5002?

A: Yes. N3429-5002RB maintains identical pitch (0.100"), position count (26), row configuration (2), mounting type (through-hole right-angle), shrouding (4-wall), and fastening (push-pull). The transition from tin-lead to tin post finish is compatible with standard solder reflow processes. ROHS3 compliance represents an improvement over the original non-compliant status.

Q: What are the key differences between 3M and HARTING substitute options?

A: HARTING SEK series parts extend operating temperature to 125°C (vs. 105°C for 3M). Contact post lengths vary: 0.177" (09185265921, 09185266921, 09185267921) or 0.114" (09185265923, 09185266923, 09185267923). Insulation material changes from PCT to PBT, and color shifts from black to gray. These variations require PCB footprint and thermal design verification but maintain electrical and mechanical compatibility.

Q: Are there packaging considerations when switching from 3429-5002 to alternatives?

A: Yes. The original 3429-5002 ships in bulk packaging. N3429-5002RB also uses bulk. D3429-5002-AR ships in trays. HARTING parts use bulk packaging. Amphenol 71922-026LF uses tubes. Packaging changes may affect automated assembly workflows and inventory management systems.

Q: Why is 65823-073 not recommended despite being listed as a substitute?

A: The 65823-073 introduces three incompatibilities: circular contact geometry (vs. square), latch lock/eject hook fastening (vs. push-pull), and reduced insulation height (0.305" vs. 0.340"). These deviations require PCB redesign and connector housing changes. Additionally, RoHS non-compliance limits applicability in regulated industries.

Q: What compliance advantages do active-status substitutes offer?

A: N3429-5002RB, D3429-5002-AR, HARTING SEK series, and 71922-026LF all carry active product status with ROHS3 compliance. This ensures continued manufacturing support, documented supply chains, and compatibility with modern environmental regulations. The original 3429-5002 obsolete status creates long-term procurement risk.

Q: Can HARTING parts with 0.177" post length be used interchangeably with 0.114" variants?

A: No. Post length determines insertion depth into mating connectors and PCB hole engagement. The 0.177" variants (09185265921, 09185266921, 09185267921) require different PCB hole depth specifications than the 0.114" variants (09185265923, 09185266923, 09185267923). Design verification is mandatory before substitution.

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