3M 3764-6203 Rectangular Connector Header Equivalent & Substitute Parts

Part Overview

The 3M 3764-6203 is a through-hole rectangular connector header with 64 positions arranged in 2 rows at 0.100" (2.54mm) pitch. This connector features shrouded 4-wall construction with solder termination and latch lock/eject hooks. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	64
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Shrouding	Shrouded - 4 Wall
Termination	Solder
Operating Temperature	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the 3M 3764-6203 are grouped based on strict electrical and mechanical compatibility criteria. All substitute parts must maintain the following core parameters:

64 positions in 2-row configuration
0.100" (2.54mm) mating pitch and row spacing
Through-hole solder termination
Shrouded 4-wall construction
Male pin contact type
UL94 V-0 flammability rating
MSL 1 (Unlimited) moisture sensitivity

Variations in contact length, insulation height, fastening type (short vs. long hooks), contact finish composition, and operating temperature range are permitted within the substitute group, as these do not affect board-level mating compatibility or electrical performance in standard applications.

Parameter Comparison

Part Number	Manufacturer	Positions	Rows	Pitch (mm)	Mounting	Shrouding	Operating Temp (°C)	Product Status	RoHS Status
3764-6203	3M	64	2	2.54	Through Hole	Shrouded - 4 Wall	-55 ~ 105	Obsolete	Non-compliant
N3764-6203RB	3M	64	2	2.54	Through Hole	Shrouded - 4 Wall	-55 ~ 105	Active	Compliant
09185646914	HARTING	64	2	2.54	Through Hole	Shrouded - 4 Wall	-55 ~ 125	Active	ROHS3 Compliant
09195646904	HARTING	64	2	2.54	Through Hole	Shrouded - 4 Wall	-55 ~ 125	Active	ROHS3 Compliant
09195646914	HARTING	64	2	2.54	Through Hole	Shrouded - 4 Wall	-55 ~ 125	Active	ROHS3 Compliant
1-499160-2	TE Connectivity AMP Connectors	64	2	2.54	Through Hole	Shrouded - 4 Wall	-55 ~ 105	Active	Non-compliant
1-5499160-2	TE Connectivity AMP Connectors	64	2	2.54	Through Hole	Shrouded - 4 Wall	-55 ~ 105	Active	ROHS3 Compliant
71918-264LF	Amphenol ICC (FCI)	64	2	2.54	Through Hole	Shrouded - 4 Wall	-55 ~ 105	Active	RoHS Compliant

Engineering Selection Recommendations

Primary Recommendation: N3764-6203RB (3M)

The N3764-6203RB is the direct 3M equivalent to the obsolete 3764-6203. This part maintains identical electrical and mechanical specifications while offering active product status and RoHS compliance. Current inventory of 1,103 pieces supports immediate procurement.

Secondary Recommendations for Extended Temperature Range:

HARTING 09185646914, 09195646904, and 09195646914 provide extended operating temperature range (-55°C ~ 125°C) compared to the original specification (-55°C ~ 105°C). All three are ROHS3 compliant with active product status. Selection among these three HARTING variants depends on fastening type requirements (short vs. long hooks) and insulation color preference.

Alternative Recommendations for RoHS Compliance:

TE Connectivity 1-5499160-2 offers ROHS3 compliance with active product status and maintains the original operating temperature range. Amphenol ICC 71918-264LF provides RoHS compliance with active status and equivalent thermal specifications.

Non-Compliant Alternatives:

TE Connectivity 1-499160-2 and the original 3764-6203 are RoHS non-compliant. These are suitable only for applications where RoHS compliance is not required.

Frequently Asked Questions (FAQ)

Q: Can I use HARTING parts as direct replacements for the 3M 3764-6203?

A: Yes. HARTING 09185646914, 09195646904, and 09195646914 are mechanically and electrically compatible. All maintain 64 positions, 2.54mm pitch, through-hole solder termination, and shrouded 4-wall construction. The extended operating temperature range (-55°C ~ 125°C) provides additional thermal margin beyond the original specification.

Q: What is the difference between N3764-6203RB and the original 3764-6203?

A: The N3764-6203RB is the active production equivalent. Both parts are identical in electrical and mechanical specifications. The primary differences are product status (active vs. obsolete) and RoHS compliance (compliant vs. non-compliant). Current rating differs slightly (1.75A vs. 1A) and contact finish on posts is pure tin versus tin-lead.

Q: Are there packaging differences among the substitute parts?

A: Yes. The original 3764-6203 packaging is not specified. N3764-6203RB is supplied in bulk packaging. HARTING parts are supplied in bulk. TE Connectivity 1-499160-2 has unspecified packaging, while 1-5499160-2 is bulk. Amphenol ICC 71918-264LF is supplied in tube packaging. Confirm packaging requirements with procurement specifications.

Q: Which substitute part has the highest current rating?

A: N3764-6203RB supports 1.75A, the highest among all parts listed. The original 3764-6203 and TE Connectivity parts are rated at 1A. HARTING and Amphenol ICC parts do not specify current rating in the provided data.

Q: Can I use these parts interchangeably in new designs?

A: Yes, within the constraints of your application requirements. All substitute parts maintain core compatibility parameters. Select based on required operating temperature range, RoHS compliance status, and packaging format. For new designs, prioritize active product status parts with current RoHS compliance.

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