3M 3433-L302 Equivalent & Substitute Parts

Part Overview

The 3M 3433-L302 is a rectangular connector header designed for through-hole, right-angle board-to-board or cable applications. This 50-position, 2-row connector operates at 0.100" (2.54mm) pitch with shrouded 4-wall construction and latch lock/eject hook fastening. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Connector Type	Header, Stackable (2)
Contact Type	Male Pin
Number of Positions	50 (2 rows × 25)
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall
Fastening Type	Latch Lock/Eject Hooks
Termination	Solder
Contact Finish - Mating	Gold
Material Flammability Rating	UL94 V-0
Operating Temperature	-55°C ~ 105°C
Current Rating	1A
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the 3M 3433-L302 is determined by strict equivalence across the following critical parameters:

Connector Configuration: 50-position, 2-row header with 0.100" (2.54mm) mating pitch and row spacing
Mounting & Orientation: Through-hole, right-angle mounting for board-to-board or cable connection
Shrouding & Fastening: 4-wall shrouded construction with latch lock/eject hook fastening mechanism
Contact System: Male pin contacts with gold mating surface finish and solder termination
Electrical Performance: 1A current rating and UL94 V-0 flammability compliance
Environmental Range: Operating temperature range of -55°C to 105°C

The Amphenol ICC (FCI) 87061-325 meets all these critical parameters and is classified as an active product, providing a direct functional equivalent for the obsolete 3M part.

Parameter Comparison

Parameter	3M 3433-L302	Amphenol ICC 87061-325
Manufacturer	3M	Amphenol ICC (FCI)
Product Status	Obsolete	Active
Connector Type	Header, Stackable (2)	Header, Stackable (2)
Contact Type	Male Pin	Male Pin
Number of Positions	50	50
Number of Rows	2	2
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall
Fastening Type	Latch Lock/Eject Hooks, Long	Latch Lock/Eject Hooks
Termination	Solder	Solder
Contact Finish - Mating	Gold	Gold, GXT™
Contact Finish Thickness - Mating	30.0µin (0.76µm)	30.0µin (0.76µm)
Contact Material	Copper Alloy	Phosphor Bronze
Insulation Height	0.660" (16.76mm)	0.710" (18.03mm)
Material Flammability Rating	UL94 V-0	UL94 V-0
Current Rating	1A	Not specified
RoHS Status	RoHS non-compliant	RoHS non-compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS	8536.69.4040	8536.69.4040

Engineering Selection Recommendations

The Amphenol ICC (FCI) 87061-325 is the primary substitute for the obsolete 3M 3433-L302. Selection is based on the following engineering criteria:

Product Status: The 87061-325 maintains active product status with current manufacturing support and documented availability (653 pcs in stock), whereas the 3433-L302 is obsolete with limited future supply assurance.

Functional Equivalence: Both connectors share identical mating pitch (0.100"), row configuration (2 rows, 50 positions), mounting orientation (through-hole, right-angle), shrouding design (4-wall), and fastening mechanism (latch lock/eject hooks).

Compliance & Certification: Both parts maintain UL94 V-0 flammability rating, EAR99 export classification, and identical HTSUS coding. Both are RoHS non-compliant and carry MSL 1 moisture sensitivity rating.

Contact System: Both employ gold-plated male pin contacts with matching 30.0µin (0.76µm) mating surface finish thickness and solder termination. The 87061-325 specifies GXT™ gold plating technology, which provides enhanced contact durability.

Physical Dimensions: The 87061-325 exhibits a 0.050" (1.27mm) greater insulation height (0.710" vs. 0.660"), which may require PCB layout verification in space-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol ICC 87061-325 directly replace the 3M 3433-L302 in existing designs?

A: Yes. Both connectors share identical mating pitch, row spacing, position count, mounting type, and shrouding configuration. The 87061-325 is mechanically and electrically compatible for board-to-board and cable applications. PCB layout should account for the 0.050" greater insulation height of the 87061-325.

Q: What is the primary reason for substitution?

A: The 3M 3433-L302 is classified as obsolete with no active manufacturing. The Amphenol ICC 87061-325 is an active product with documented supply availability, ensuring long-term component sourcing for production and field support.

Q: Are there differences in contact material between these connectors?

A: Yes. The 3M 3433-L302 uses copper alloy contacts, while the Amphenol ICC 87061-325 uses phosphor bronze contacts. Both materials support the specified 1A current rating and maintain equivalent electrical performance. Phosphor bronze provides enhanced spring characteristics and contact durability.

Q: Do both connectors meet the same environmental specifications?

A: Both connectors operate across the -55°C to 105°C temperature range and carry identical moisture sensitivity level (MSL 1 - Unlimited). Both maintain UL94 V-0 flammability compliance.

Q: What packaging differences exist between these parts?

A: The 3M 3433-L302 is supplied in standard packaging (not specified), while the Amphenol ICC 87061-325 is supplied in bulk packaging. Bulk packaging is standard for high-volume production applications.

Q: Are there any compliance or export restrictions?

A: Both connectors carry identical ECCN (EAR99) and HTSUS (8536.69.4040) classifications. Both are RoHS non-compliant. No additional compliance barriers exist for substitution.

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