3M 3372-5303 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3372-5303 is a through-hole, right-angle rectangular connector header with 60 positions at 2.54mm pitch, designed for board-to-board or cable interconnection applications. This part operates across the industrial temperature range of -55°C to 105°C with a current rating of 1.75A per contact and gold-plated mating contacts. The 3372-5303 is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production support.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	60
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
Contact Finish - Post	Tin or Tin-Lead
Operating Temperature Range	-55°C to 105°C (or -55°C to 125°C)
Current Rating	1.75A or 1A per Contact
Material Flammability Rating	UL94 V-0
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 3M 3372-5303 is determined by strict alignment with the following core parameters:

Critical Matching Parameters:

Connector type (Header), contact type (Male Pin), and mating pitch (0.100" / 2.54mm)
Number of positions (60) and row configuration (2 rows)
Mounting style (Through Hole, Right Angle) and shrouding (Shrouded - 4 Wall)
Contact finish on mating surface (Gold)
Operating temperature range compatibility (-55°C minimum, 105°C minimum)
Material flammability rating (UL94 V-0)
Moisture sensitivity level (1 - Unlimited)

Allowable Variations:

Contact post finish (Tin or Tin-Lead acceptable)
Contact post length (within 0.110" to 0.155" range)
Insulation material (PCT or PBT, both glass-filled)
Fastening type (Latch Lock/Eject Hooks - Long or Short, or Push-Pull)
Contact material (Copper Alloy or Brass)
Insulation color (Black or Gray)

All seven substitute parts meet these criteria and are functionally interchangeable with the 3372-5303 in standard applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Product Status	Pitch (mm)	Positions	Rows	Mounting	Shrouding	Contact Finish - Mating	Operating Temp (°C)	Current Rating	UL94 Rating	RoHS Status
3372-5303	3M	3000	Obsolete	2.54	60	2	Through Hole, Right Angle	Shrouded - 4 Wall	Gold	-55 to 105	1.75A	V-0	Non-compliant
N3372-5002RB	3M	3000	Active	2.54	60	2	Through Hole, Right Angle	Shrouded - 4 Wall	Gold	-55 to 105	1.75A	V-0	Compliant
09185605903	HARTING	SEK	Active	2.54	60	2	Through Hole, Right Angle	Shrouded - 4 Wall	Gold	-55 to 125	—	V-0	ROHS3 Compliant
09185606903	HARTING	SEK	Active	2.54	60	2	Through Hole, Right Angle	Shrouded - 4 Wall	Gold	-55 to 125	—	V-0	ROHS3 Compliant
09185606913	HARTING	SEK	Active	2.54	60	2	Through Hole, Right Angle	Shrouded - 4 Wall	Gold	-55 to 125	—	V-0	ROHS3 Compliant
09185607903	HARTING	SEK	Active	2.54	60	2	Through Hole, Right Angle	Shrouded - 4 Wall	Gold	-55 to 125	—	V-0	ROHS3 Compliant
1-499913-1	TE Connectivity AMP Connectors	AMP-Latch	Active	2.54	60	2	Through Hole, Right Angle	Shrouded - 4 Wall	Gold or Gold-Palladium	-65 to 105	1A per Contact	V-0	Non-compliant
1-5499141-1	TE Connectivity AMP Connectors	AMP-Latch	Active	2.54	60	2	Through Hole, Right Angle	Shrouded - 4 Wall	Gold or Gold-Palladium	-65 to 105	1A per Contact	V-0	ROHS3 Compliant
3-5102322-1	TE Connectivity AMP Connectors	AMP-Latch	Active	2.54	60	2	Through Hole, Right Angle	Shrouded - 4 Wall	Gold or Gold-Palladium	-65 to 105	1A per Contact	V-0	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: N3372-5002RB (3M)

The N3372-5002RB is the direct active equivalent from the original manufacturer. It maintains identical electrical and mechanical specifications to the 3372-5303 while achieving RoHS compliance. This part is the preferred choice for applications requiring continuity with the original design and manufacturer support.

Secondary Recommendations: HARTING SEK Series (09185605903, 09185606903, 09185606913, 09185607903)

The HARTING SEK series connectors provide full functional equivalence with extended operating temperature range (-55°C to 125°C versus -55°C to 105°C). All four HARTING variants are ROHS3 compliant and feature identical mating pitch, position count, and shrouding. Differences among these four parts relate to fastening type (Latch Lock/Eject Hooks - Long or Short) and contact post length, which do not affect electrical compatibility. These parts are suitable for applications where extended temperature performance is beneficial.

Tertiary Recommendations: TE Connectivity AMP-Latch Series (1-499913-1, 1-5499141-1, 3-5102322-1)

The TE Connectivity AMP-Latch series provides functional equivalence with extended lower temperature rating (-65°C minimum). The 1-5499141-1 and 3-5102322-1 are ROHS3 compliant, while 1-499913-1 is non-compliant. Current rating is specified as 1A per contact (versus 1.75A for the original part). These parts are suitable for applications requiring lower temperature performance or where TE Connectivity supply chain integration is preferred.

Compliance Considerations:

For new designs subject to RoHS requirements, select from N3372-5002RB, HARTING SEK series, 1-5499141-1, or 3-5102322-1. All other options are non-compliant with current RoHS standards.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts interchangeably with the 3372-5303?

A: Yes. All seven substitute parts meet the core electrical and mechanical requirements: 60-position, 2.54mm pitch, through-hole right-angle header with shrouded 4-wall configuration, gold-plated mating contacts, and UL94 V-0 flammability rating. Differences in fastening type, contact post length, and insulation material do not affect functional compatibility in standard applications.

Q: What is the difference between the HARTING and TE Connectivity options?

A: HARTING SEK series parts operate to 125°C (versus 105°C for the original), while TE Connectivity AMP-Latch series parts operate to -65°C (versus -55°C for the original). Both manufacturers provide ROHS3-compliant options. Contact material differs (Copper Alloy for HARTING, Brass for TE Connectivity), but both materials are acceptable for this connector class.

Q: Why does the 3M N3372-5002RB have a different part number than the original 3372-5303?

A: The N3372-5002RB represents an active production variant with RoHS compliance. The "N" prefix and revised suffix indicate updated manufacturing standards while maintaining electrical and mechanical compatibility with the original design.

Q: Are there differences in current rating among these parts?

A: The original 3372-5303 and N3372-5002RB are rated at 1.75A per contact. TE Connectivity AMP-Latch parts are rated at 1A per contact. HARTING parts do not specify a current rating in the provided data. For applications requiring 1.75A per contact, use 3M parts or confirm HARTING capability through the manufacturer.

Q: What packaging options are available?

A: N3372-5002RB is supplied in bulk packaging. HARTING SEK series parts are supplied in bulk. TE Connectivity parts are supplied in tray packaging (1-5499141-1 and 3-5102322-1) or unspecified packaging (1-499913-1). Confirm packaging requirements with your procurement process.

Q: Which part should I select for new designs?

A: For new designs, N3372-5002RB is the recommended choice as the active equivalent from the original manufacturer with RoHS compliance. For applications requiring extended temperature performance, HARTING SEK series parts provide -55°C to 125°C operation. For applications requiring extended lower temperature performance, TE Connectivity 1-5499141-1 or 3-5102322-1 provide -65°C to 105°C operation with RoHS compliance.

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