3M 3433-6002UG Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3433-6002UG is a shrouded vertical rectangular connector header with 50 positions at 2.54mm pitch, designed for through-hole mounting with solder termination. This connector features a 2-row configuration with push-pull fastening and is rated for 1A continuous current across the -55°C to 105°C operating temperature range. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for new designs and production continuity.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	50
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Shrouding	Shrouded - 4 Wall
Fastening Type	Push-Pull
Contact Shape	Square
Operating Temperature Range	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following core parameters:

Critical Parameters (Must Match Exactly):

Connector Type: Header
Contact Type: Male Pin
Number of Positions: 50
Number of Rows: 2
Pitch - Mating: 0.100" (2.54mm)
Row Spacing - Mating: 0.100" (2.54mm)
Mounting Type: Through Hole
Termination: Solder
Shrouding: Shrouded - 4 Wall
Fastening Type: Push-Pull

Allowable Variations:

Contact Length - Post: Variations permitted within mechanical envelope constraints
Contact Finish - Mating: Gold finishes with different thickness specifications are acceptable
Contact Finish - Post: Tin or Tin-Lead finishes are interchangeable
Contact Material: Copper Alloy, Brass, or Phosphor Bronze are functionally equivalent
Insulation Material: PBT, PCT, or Thermoplastic formulations with glass filling are acceptable
Operating Temperature: Extensions above 105°C are acceptable; reductions below 105°C are not
Current Rating: Values equal to or exceeding 1A are acceptable
Contact Shape: Square or Circular shapes are acceptable for this application
Insulation Color: Variations in color do not affect electrical function

All identified substitute parts maintain these critical parameters while offering active product status and improved compliance certifications.

Parameter Comparison

Parameter	3433-6002UG (Main)	D3433-6002-AR	N3433-6002RB	09185505924	09185506922	71918-050LF	CWN-350-50-0021
Manufacturer	3M	3M	3M	HARTING	HARTING	Amphenol ICC (FCI)	CW Industries
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
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
Number of Positions	50	50	50	50	50	50	50
Number of 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	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Shrouding	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
Contact Length - Mating	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.228" (5.80mm)	0.240" (6.10mm)
Contact Length - Post	0.112" (2.84mm)	0.112" (2.84mm)	0.112" (2.84mm)	0.114" (2.90mm)	0.177" (4.50mm)	0.114" (2.90mm)	0.090" (2.29mm)
Overall Contact Length	0.652" (16.56mm)	0.652" (16.56mm)	0.652" (16.56mm)	0.650" (16.51mm)	0.713" (18.10mm)	Not specified	Not specified
Insulation Height	0.680" (17.27mm)	0.680" (17.27mm)	0.680" (17.27mm)	0.681" (17.30mm)	0.681" (17.30mm)	0.685" (17.40mm)	0.681" (17.30mm)
Contact Shape	Square	Square	Square	Square	Square	Square	Circular
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold, GXT™	Gold
Contact Finish - Post	Tin-Lead	Tin	Tin	Tin	Tin	Tin	Nickel
Contact Material	Copper Alloy	Brass	Copper Alloy	Copper Alloy	Copper Alloy	Phosphor Bronze	Phosphor Bronze
Operating Temperature Range	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	Not specified	-55°C ~ 125°C
Current Rating (Amps)	1A	1.75A	1.75A	Not specified	Not specified	Not specified	1A
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	Non-compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation: D3433-6002-AR (3M)

The D3433-6002-AR is the manufacturer-recommended direct replacement from 3M. It maintains identical mechanical and electrical specifications to the 3433-6002UG while offering active product status and ROHS3 compliance. The increased current rating of 1.75A provides additional design margin. This part is available in tray packaging with 1244 units in stock.

Secondary Recommendation: N3433-6002RB (3M)

The N3433-6002RB provides an alternative 3M solution with active status and RoHS compliance. It maintains all critical electrical and mechanical parameters with a 1.75A current rating. Bulk packaging is available with 1315 units in stock.

Alternative Manufacturers:

HARTING SEK series parts (09185505924, 09185506922, 09185506924, 09185507922, 09185507924) offer ROHS3 compliance and extended operating temperature to 125°C. These parts maintain all critical connector specifications with variations in contact post length. HARTING parts are suitable for applications requiring enhanced temperature performance.

Amphenol ICC 71918-050LF (Quickie™ series) provides RoHS compliance with phosphor bronze contacts and GXT™ gold mating finish. This part is available in tube packaging with 1555 units in stock.

CW Industries CWN-350-50-0021 offers ROHS3 compliance with circular contact geometry and nickel post finish. This part maintains the 1A current rating and extended 125°C operating temperature.

Compliance Considerations:

All substitute parts except the original 3433-6002UG meet current RoHS requirements. For new designs, D3433-6002-AR or N3433-6002RB are preferred due to direct 3M lineage and ROHS3 certification. For applications requiring extended temperature performance beyond 105°C, HARTING or CW Industries alternatives are suitable.

Frequently Asked Questions (FAQ)

Q: Can I use D3433-6002-AR as a direct replacement for 3433-6002UG?

A: Yes. The D3433-6002-AR is the manufacturer-recommended equivalent. It maintains identical pitch (2.54mm), position count (50), row configuration (2), mounting type (through-hole), and termination method (solder). The connector will mate with existing cable assemblies and PCB layouts designed for the original part.

Q: What is the difference between the 3M substitute options?

A: D3433-6002-AR and N3433-6002RB are both active 3M products with identical electrical and mechanical specifications. The primary differences are packaging (tray vs. bulk) and base product series designation (D3000 vs. 3000). Both offer 1.75A current rating and full RoHS compliance. Selection depends on packaging requirements and inventory availability.

Q: Are HARTING parts compatible with the original 3433-6002UG?

A: HARTING SEK series parts (09185505924, 09185506922, 09185506924, 09185507922, 09185507924) maintain all critical connector parameters including pitch, position count, row spacing, shrouding, and fastening type. Variations exist in contact post length (0.114" or 0.177" vs. 0.112" original) and operating temperature range (125°C vs. 105°C). These parts are mechanically and electrically compatible for standard applications.

Q: What does the contact post length variation mean for compatibility?

A: Contact post length affects the depth of insertion into the mating connector. Variations of ±0.002" to ±0.005" are within acceptable tolerance for standard 2.54mm pitch connectors. The HARTING 09185506922 and 09185507922 parts with 0.177" post length provide deeper engagement, while 09185505924 and 09185507924 with 0.114" post length are closer to the original specification. All variants will function with standard mating connectors.

Q: Which substitute offers the best compliance for new designs?

A: D3433-6002-AR and N3433-6002RB both offer ROHS3 compliance as 3M products. HARTING parts offer ROHS3 compliance with extended 125°C operating temperature. For applications requiring RoHS compliance without extended temperature requirements, any of these options are suitable. For applications requiring both RoHS compliance and extended temperature performance, HARTING alternatives are recommended.

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

A: All substitute parts maintain identical pitch and position count, allowing mechanical interchangeability within a single assembly. However, for consistency in manufacturing and quality control, using a single part number across an assembly is recommended. If mixing is necessary, verify that contact post length variations do not create mating depth inconsistencies.

Q: What is the difference between Tin and Tin-Lead post finishes?

A: The original 3433-6002UG uses Tin-Lead post finish. Most substitutes use Tin-only finish. Both finishes provide equivalent solderability and electrical performance. Tin-only finishes are preferred in RoHS-compliant applications. The functional difference is negligible for standard through-hole soldering processes.

Q: Are there packaging considerations when selecting a substitute?

A: Yes. D3433-6002-AR is supplied in tray packaging, N3433-6002RB in bulk, HARTING parts in bulk, 71918-050LF in tube, and CWN-350-50-0021 in bulk. Packaging affects handling, storage, and automated assembly compatibility. Verify packaging requirements with your manufacturing process before final part selection.

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