3M 3433-1602 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3433-1602 is a through-hole, right-angle rectangular connector header with 50 positions at 2.54mm pitch, designed for board-to-board or cable interconnection applications. This connector features shrouded 3-wall construction with solder termination and latch lock/eject fastening. The part is classified as obsolete, making identification of functionally equivalent active alternatives necessary for ongoing design support and procurement.

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, Right Angle
Shrouding	Shrouded
Termination	Solder
Operating Temperature Range	-55°C ~ 105°C
Current Rating	1A
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution eligibility for the 3433-1602 is determined by the following critical parameters: connector type (header), contact type (male pin), number of positions (50), number of rows (2), mating pitch (2.54mm), row spacing (2.54mm), mounting type (through-hole right-angle), termination method (solder), and operating temperature range (-55°C ~ 105°C).

The substitute parts D3433-5002-AR and N3433-5002RB maintain these core electrical and mechanical specifications. Variations in shrouding design (4-wall versus 3-wall), fastening mechanism (push-pull versus latch lock/eject), contact material composition, and current rating do not preclude functional substitution when the mating interface and board-level integration requirements are compatible with the specified parameters.

Parameter Comparison

Parameter	3433-1602 (Main)	D3433-5002-AR	N3433-5002RB
Manufacturer	3M	3M	3M
Connector Type	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin
Number of Positions	50	50	50
Number of Rows	2	2	2
Pitch - Mating	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)
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle
Termination	Solder	Solder	Solder
Contact Length - Mating	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)
Contact Length - Post	0.112" (2.84mm)	0.112" (2.84mm)	0.112" (2.84mm)
Insulation Height	0.310" (7.87mm)	0.340" (8.64mm)	0.340" (8.64mm)
Contact Shape	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold
Contact Material	Copper Alloy	Brass	Copper Alloy
Insulation Material	PCT, Polyester, Glass Filled	PCT, Polyester, Glass Filled	PCT, Polyester, Glass Filled
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0
Current Rating (Amps)	1A	1.75A	1.75A
Product Status	Obsolete	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS Compliant

Engineering Selection Recommendations

Both D3433-5002-AR and N3433-5002RB are active product alternatives to the obsolete 3433-1602. Selection between these substitutes should be based on regulatory compliance requirements and packaging specifications.

D3433-5002-AR is ROHS3 compliant and supplied in tray packaging, suitable for automated assembly environments requiring enhanced environmental compliance. N3433-5002RB is RoHS compliant and supplied in bulk packaging, appropriate for manual assembly or applications where tray packaging is not required.

Both substitutes provide increased current rating capacity (1.75A versus 1A) and maintain identical mating interface geometry, contact pitch, and operating temperature specifications. The increased insulation height (0.340" versus 0.310") must be verified against available board-level clearance in the target application.

Frequently Asked Questions (FAQ)

Q: Can D3433-5002-AR or N3433-5002RB directly replace the 3433-1602 in existing designs?

A: Both substitutes maintain the critical mating interface parameters: 50 positions, 2 rows, 0.100" (2.54mm) pitch, and 0.100" (2.54mm) row spacing. The increased insulation height (0.340" versus 0.310") requires verification of available clearance on the target PCB. Contact geometry and solder termination are compatible.

Q: What is the difference between the two substitute parts?

A: D3433-5002-AR uses brass contact material and is supplied in tray packaging with ROHS3 compliance. N3433-5002RB uses copper alloy contact material and is supplied in bulk packaging with RoHS compliance. Both provide 1.75A current rating and identical mating interface specifications.

Q: Why is the current rating higher on the substitute parts?

A: The substitute parts D3433-5002-AR and N3433-5002RB are rated for 1.75A, compared to 1A for the 3433-1602. This parameter is provided in the component specifications and does not affect substitution eligibility when the application current requirement does not exceed the original 1A rating.

Q: Are there packaging considerations for these substitutes?

A: D3433-5002-AR is supplied in tray packaging, suitable for pick-and-place assembly. N3433-5002RB is supplied in bulk packaging. Packaging selection should align with manufacturing process requirements and inventory management practices.

Q: What compliance certifications apply to each substitute?

A: D3433-5002-AR is ROHS3 compliant. N3433-5002RB is RoHS compliant. Both are UL94 V-0 rated and suitable for applications requiring environmental compliance documentation.

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