3M 3433-1502UG Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3433-1502UG is a through-hole, right-angle rectangular connector header with 50 positions at 2.54mm pitch. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing production and maintenance applications. The connector features shrouded design with latch lock fastening and gold-plated mating contacts suitable for board-to-board or cable interconnection in industrial and commercial electronics.

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
Contact Finish - Mating	Gold
Operating Temperature Range	-55°C to 105°C
Current Rating	1A
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution eligibility for the 3433-1502UG is determined by the following critical parameters:

50-position connector header configuration
2.54mm (0.100") mating pitch
2-row layout with 0.100" row spacing
Male pin contact type
Through-hole, right-angle mounting
Gold-plated mating contacts
Shrouded design with keying slot
Operating temperature range -55°C to 105°C
UL94 V-0 flammability rating
Solder termination

The identified substitute parts maintain these core electrical and mechanical parameters while offering improvements in product status, compliance certifications, and fastening mechanisms.

Parameter Comparison

Parameter	3433-1502UG (Main)	D3433-5002-AR	N3433-5002RB
Manufacturer	3M	3M	3M
Product Status	Obsolete	Active	Active
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
Shrouding	Shrouded - 3 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Fastening Type	Latch Lock/Eject Hooks, Short	Push-Pull	Push-Pull
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 to 105°C	-55°C to 105°C	-55°C to 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0
Insulation Color	Black	Black	Black
Current Rating (Amps)	1A	1.75A	1.75A
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99	EAR99
HTSUS	8536.69.4040	8536.69.4040	8536.69.4040

Engineering Selection Recommendations

Both D3433-5002-AR and N3433-5002RB are active product alternatives to the obsolete 3433-1502UG. Selection between these substitutes is based on compliance and availability requirements:

D3433-5002-AR is recommended for applications requiring ROHS3 compliance certification. This part maintains the core electrical and mechanical specifications while offering improved current rating (1.75A versus 1A) and enhanced shrouding (4-wall versus 3-wall design). The push-pull fastening mechanism provides improved mating reliability compared to the original latch lock design.

N3433-5002RB is recommended for applications requiring RoHS compliance with REACH unaffected status. This part also provides 1.75A current rating and 4-wall shrouding. The copper alloy contact material matches the original part specification more closely than the brass alternative.

Both substitute parts are available in active production status with higher inventory levels than the obsolete original, ensuring supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can D3433-5002-AR and N3433-5002RB be used interchangeably with 3433-1502UG?

A: Both parts maintain the critical electrical and mechanical parameters: 50-position, 2.54mm pitch, 2-row configuration, through-hole right-angle mounting, and gold-plated mating contacts. The primary differences are fastening mechanism (push-pull versus latch lock), shrouding design (4-wall versus 3-wall), and compliance certifications. PCB layout compatibility is maintained for standard applications.

Q: What is the difference between the fastening mechanisms?

A: The original 3433-1502UG uses latch lock/eject hooks with short fastening. Both substitutes use push-pull fastening, which provides different mating force characteristics and disconnection behavior. Mechanical interface compatibility must be confirmed for the mating connector type in your application.

Q: Are there packaging differences between the substitutes?

A: D3433-5002-AR is supplied in tray packaging, while N3433-5002RB is supplied in bulk packaging. Packaging selection depends on production volume and handling requirements.

Q: Which substitute should I select for new designs?

A: Selection depends on regulatory requirements. For ROHS3-regulated applications, specify D3433-5002-AR. For RoHS compliance with REACH considerations, specify N3433-5002RB. Both parts support the same 1.75A current rating and operating temperature range.

Q: What is the impact of the increased insulation height?

A: The substitute parts have 0.340" (8.64mm) insulation height compared to 0.310" (7.87mm) on the original. This 0.030" increase affects mated stacking height and PCB clearance. Verify mechanical fit in your application before implementation.

Q: Are the contact finish specifications compatible?

A: All parts feature gold-plated mating contacts suitable for standard connector interfaces. Post contact finish differs (tin-lead on original versus tin on substitutes), but this does not affect mating performance for standard solder termination applications.

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