3M 3433-5302 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3433-5302 is a right-angle rectangular connector header with 50 positions at 2.54mm pitch, designed for through-hole mounting in board-to-board or cable applications. This part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production support. The connector features shrouded 4-wall construction with latch lock/eject hooks and gold-plated mating contacts suitable for 1.75A current applications across the -55°C to 105°C operating range.

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 - 4 Wall
Contact Finish - Mating	Gold
Operating Temperature	-55°C ~ 105°C
Current Rating	1.75A
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution for the 3433-5302 is determined by strict equivalence across the following critical parameters:

50-position, 2-row configuration at 0.100" (2.54mm) pitch
Right-angle through-hole mounting orientation
Shrouded 4-wall construction with male pin contacts
Gold-plated mating surface with tin-plated post termination
UL94 V-0 flammability rating
Operating temperature range of -55°C to 105°C minimum
1.75A current rating capability

Substitutes are grouped into three categories based on fastening mechanism and contact post length, which affect mechanical fit and mating force characteristics but do not alter electrical performance within the specified parameters.

Parameter Comparison

Part Number	Manufacturer	Series	Product Status	Fastening Type	Contact Length - Post	Insulation Material	RoHS Status	Operating Temperature	Inventory
3433-5302	3M	3000	Obsolete	Latch Lock/Eject Hooks, Long	0.112" (2.84mm)	PCT, Polyester, Glass Filled	RoHS non-compliant	-55°C ~ 105°C	1082 Pcs
N3433-5302RB	3M	3000	Active	Latch Lock/Eject Hooks, Long	0.112" (2.84mm)	PCT, Polyester, Glass Filled	RoHS Compliant	-55°C ~ 105°C	1655 Pcs
D3433-5002-AR	3M	D3000	Active	Push-Pull	0.112" (2.84mm)	PCT, Polyester, Glass Filled	ROHS3 Compliant	-55°C ~ 105°C	843 Pcs
N3433-5002RB	3M	3000	Active	Push-Pull	0.112" (2.84mm)	PCT, Polyester, Glass Filled	RoHS Compliant	-55°C ~ 105°C	1041 Pcs
09185505901	HARTING	SEK	Active	Latch Lock/Eject Hooks, Long	0.177" (4.50mm)	PBT, Glass Filled	ROHS3 Compliant	-55°C ~ 125°C	789 Pcs
09185505903	HARTING	SEK	Active	Latch Lock/Eject Hooks, Long	0.114" (2.90mm)	PBT, Glass Filled	ROHS3 Compliant	-55°C ~ 125°C	1068 Pcs
09185505911	HARTING	SEK	Active	Latch Lock/Eject Hooks, Short	0.177" (4.50mm)	PBT, Glass Filled	ROHS3 Compliant	-55°C ~ 125°C	985 Pcs
09185505913	HARTING	SEK	Active	Latch Lock/Eject Hooks, Short	0.114" (2.90mm)	PBT, Glass Filled	ROHS3 Compliant	-55°C ~ 125°C	692 Pcs
09185506901	HARTING	SEK	Active	Latch Lock/Eject Hooks, Long	0.177" (4.50mm)	PBT, Glass Filled	ROHS3 Compliant	-55°C ~ 125°C	1157 Pcs
09185506903	HARTING	SEK	Active	Latch Lock/Eject Hooks, Long	0.114" (2.90mm)	PBT, Glass Filled	ROHS3 Compliant	-55°C ~ 125°C	883 Pcs
09185506911	HARTING	SEK	Active	Latch Lock/Eject Hooks, Short	0.177" (4.50mm)	PBT, Glass Filled	ROHS3 Compliant	-55°C ~ 125°C	860 Pcs

Engineering Selection Recommendations

For direct replacement of the obsolete 3433-5302, the N3433-5302RB is the primary equivalent. This part maintains identical mechanical and electrical specifications while providing active product status and RoHS compliance. The N3433-5302RB is manufactured by 3M under the same 3000 series and preserves the latch lock/eject hook fastening mechanism with matching contact post length.

Alternative 3M options include N3433-5002RB and D3433-5002-AR, which substitute the fastening mechanism to push-pull type. These remain electrically and mechanically compatible but require mechanical interface verification for applications designed around the original latch lock configuration.

HARTING SEK series connectors (09185505901, 09185505903, 09185505911, 09185505913, 09185506901, 09185506903, 09185506911) provide cross-manufacturer equivalence with extended operating temperature range to 125°C and ROHS3 compliance. Contact post length variations (0.114" or 0.177") and fastening hook styles (long or short) must be matched to PCB design specifications. The insulation material differs from the original (PBT versus PCT), but both meet UL94 V-0 flammability requirements.

Frequently Asked Questions (FAQ)

Q: Can I use N3433-5002RB as a direct replacement for 3433-5302?

A: N3433-5002RB is electrically equivalent but uses push-pull fastening instead of latch lock/eject hooks. Mechanical compatibility depends on your connector receptacle design. If your mating connector expects latch lock engagement, N3433-5302RB is the correct choice.

Q: What is the difference between the 3M and HARTING substitutes?

A: Both meet the core electrical and mechanical specifications. HARTING parts offer extended temperature range (-55°C to 125°C versus -55°C to 105°C) and use PBT insulation instead of PCT. All HARTING options are ROHS3 compliant. Contact post length varies across HARTING models and must match your PCB hole depth.

Q: Does contact post length affect electrical performance?

A: Contact post length does not affect electrical performance but impacts mechanical fit and solder joint formation. The original 3433-5302 uses 0.112" (2.84mm) posts. HARTING equivalents offer 0.114" (2.90mm) or 0.177" (4.50mm) options. Verify PCB hole depth and solder pad design before selecting.

Q: Are all substitutes RoHS compliant?

A: The original 3433-5302 is RoHS non-compliant. All active substitutes listed are RoHS compliant (either RoHS or ROHS3). For applications requiring RoHS compliance, any substitute part is acceptable.

Q: What is the difference between latch lock long, latch lock short, and push-pull fastening?

A: Fastening type determines mating force and engagement mechanism. Latch lock hooks provide positive mechanical retention; long hooks engage deeper into the receptacle than short hooks. Push-pull fastening uses a different engagement profile. Compatibility is determined by the mating connector receptacle design.

Q: Can I mix 3M and HARTING connectors in the same assembly?

A: Mixing manufacturers is not recommended unless the mating receptacles are verified as compatible with both connector types. Mechanical tolerances and engagement profiles may differ between manufacturers.

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