3M 3433-6302 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3433-6302 is a through-hole rectangular connector header with 50 positions arranged in 2 rows at 0.100" (2.54mm) pitch. This connector features shrouded 4-wall construction, solder termination, and latch lock/eject hook fastening. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Connector Type	Header, 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
Contact Finish - Mating	Gold
Contact Finish - Post	Tin-Lead or Tin
Operating Temperature Range	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0
Current Rating	1A

Substitute Part Grouping Explanation

Substitution for the 3433-6302 is determined by strict equivalence across the following critical parameters:

Connector Type & Contact Configuration: Header with male pins
Position Count & Row Configuration: 50 positions in 2 rows
Pitch Specification: 0.100" (2.54mm) mating pitch and row spacing
Mounting & Termination: Through-hole solder termination
Shrouding & Fastening: Shrouded 4-wall construction with compatible fastening mechanisms
Contact Materials & Finishes: Gold mating surface with tin or tin-lead post finish
Environmental Ratings: Operating temperature -55°C to 105°C minimum, UL94 V-0 flammability

Direct substitutes maintain all these parameters. Parts with variations in fastening type (push-pull vs. latch lock), contact post length, insulation material composition, or current rating are listed as functional alternatives where mechanical and electrical compatibility is preserved.

Parameter Comparison

Parameter	3433-6302	N3433-6302RB	D3433-6002-AR	N3433-6002RB	1-102321-0	1-499206-0
Manufacturer	3M	3M	3M	3M	TE Connectivity	TE Connectivity
Connector Type	Header	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Number of Positions	50	50	50	50	50	50
Number of Rows	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)
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)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	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
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold or Gold-Palladium	Gold or Gold-Palladium
Contact Finish - Post	Tin-Lead	Tin	Tin	Tin	Tin-Lead	Tin-Lead
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Current Rating (Amps)	1A	1.75A	1.75A	1.75A	1A per Contact	1A
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	Non-compliant	Compliant	ROHS3 Compliant	Compliant	Non-compliant	Non-compliant

Engineering Selection Recommendations

Primary Substitutes (3M Series)

N3433-6302RB and N3433-6002RB are direct 3M alternatives with active product status and RoHS compliance. N3433-6302RB maintains identical mechanical and electrical specifications with improved current rating (1.75A vs. 1A) and tin post finish. N3433-6002RB offers push-pull fastening instead of latch lock, suitable for applications where connector retention method is not critical.

D3433-6002-AR represents the D3000 series evolution with ROHS3 compliance and brass contact material. This part accommodates board-to-cable/wire applications with push-pull fastening and maintains full electrical compatibility.

Secondary Substitutes (Cross-Manufacturer)

TE Connectivity AMP-Latch series parts 1-102321-0 and 1-499206-0 provide functional equivalence with extended temperature range (-65°C to 105°C). Both maintain 50-position, 2-row configuration with gold mating contacts and tin-lead post finish. These parts retain RoHS non-compliant status matching the original 3433-6302. Contact post length variations (0.155" vs. 0.110") require PCB design verification for through-hole depth compatibility.

Compliance Considerations

The original 3433-6302 is RoHS non-compliant. Designs requiring RoHS compliance must transition to N3433-6302RB, N3433-6002RB, or D3433-6002-AR. TE Connectivity alternatives maintain non-compliant status and are suitable only for legacy system support.

Frequently Asked Questions (FAQ)

Q: Can N3433-6302RB directly replace 3433-6302 without PCB modification?

A: Yes. N3433-6302RB maintains identical pitch (0.100"), position count (50), row configuration (2), mounting type (through-hole), and shrouding (4-wall). Mechanical and electrical compatibility is preserved. The increased current rating (1.75A vs. 1A) and tin post finish (vs. tin-lead) do not affect interchangeability.

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

A: Latch lock/eject hooks (3433-6302, N3433-6302RB) provide positive mechanical retention with manual release. Push-pull fastening (D3433-6002-AR, N3433-6002RB) uses friction-based engagement. Selection depends on application requirements for connector security and ease of disconnection. Both types are mechanically compatible with standard 0.100" pitch receptacles.

Q: Are TE Connectivity parts 1-102321-0 and 1-499206-0 suitable for new designs?

A: These parts provide functional equivalence but retain RoHS non-compliant status. They are appropriate for legacy system support and applications where RoHS compliance is not mandated. For new designs, 3M N-series or D-series parts with active status and compliance certifications are preferred.

Q: What is the significance of contact post length variation?

A: Contact post length affects PCB through-hole depth and solder joint formation. The original 3433-6302 specifies 0.112" (2.84mm) post length. TE Connectivity 1-102321-0 provides 0.155" (3.94mm) and 1-499206-0 provides 0.110" (2.79mm). PCB design must accommodate these variations to ensure adequate solder coverage and mechanical strength. Verify hole depth during design transition.

Q: Can parts with different insulation materials be substituted?

A: Yes, provided all other electrical and mechanical parameters match. The original 3433-6302 uses PBT polyester glass-filled insulation. Substitutes use PCT polyester glass-filled or PBT glass-filled materials. Both materials meet UL94 V-0 flammability requirements and maintain equivalent performance in the specified temperature range (-55°C to 105°C).

Q: What packaging options are available?

A: The original 3433-6302 packaging is not specified. Substitutes are available in tray (N3433-6302RB), bulk (N3433-6002RB, D3433-6002-AR), and tray (TE Connectivity parts). Packaging selection affects inventory management and unit cost but does not impact connector performance or compatibility.

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