3M 3764-6303 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3764-6303 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 system support and new designs requiring compatible interconnect solutions.

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

Substitute Part Grouping Explanation

Substitute parts for the 3M 3764-6303 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
Male pin contact type
Through-hole solder termination
Shrouded 4-wall construction
Square contact shape
UL94 V-0 flammability rating
Operating temperature range of -55°C minimum and 105°C maximum

Substitutes are classified into two categories: direct equivalents from the original manufacturer (3M) and cross-manufacturer alternatives from TE Connectivity AMP Connectors and HARTING that meet all specified electrical and mechanical parameters.

Parameter Comparison

Part Number	Manufacturer	Positions	Rows	Pitch (mm)	Mounting	Shrouding	Contact Finish - Mating	Contact Finish - Post	Operating Temp (°C)	Current Rating (A)	Product Status	RoHS Status
3764-6303	3M	64	2	2.54	Through Hole	Shrouded - 4 Wall	Gold	Tin-Lead	-55 ~ 105	1	Obsolete	Non-compliant
N3764-6303RB	3M	64	2	2.54	Through Hole	Shrouded - 4 Wall	Gold	Tin	-55 ~ 105	1.75	Active	Compliant
1-5102321-2	TE Connectivity AMP	64	2	2.54	Through Hole	Shrouded - 4 Wall	Gold or Gold-Palladium	Tin	-65 ~ 105	1	Active	Compliant
1-5499160-2	TE Connectivity AMP	64	2	2.54	Through Hole	Shrouded - 4 Wall	Gold or Gold-Palladium	Tin	-55 ~ 105	1	Active	Compliant
1-5499206-2	TE Connectivity AMP	64	2	2.54	Through Hole	Shrouded - 4 Wall	Gold or Gold-Palladium	Tin	-65 ~ 105	1	Active	Compliant
1-5499922-2	TE Connectivity AMP	64	2	2.54	Through Hole	Shrouded - 4 Wall	Gold or Gold-Palladium	Tin	-65 ~ 105	1	Active	Compliant
1-499206-2	TE Connectivity AMP	64	2	2.54	Through Hole	Shrouded - 4 Wall	Gold or Gold-Palladium	Tin-Lead	-65 ~ 105	1	Active	Not applicable
1-499922-2	TE Connectivity AMP	64	2	2.54	Through Hole	Shrouded - 4 Wall	Gold or Gold-Palladium	Tin-Lead	-65 ~ 105	1	Active	Non-compliant
09185647914	HARTING	64	2	2.54	Through Hole	Shrouded - 4 Wall	Gold	Tin	-55 ~ 125	—	Active	Compliant

Engineering Selection Recommendations

For applications requiring RoHS compliance, N3764-6303RB from 3M provides the most direct replacement with active product status and RoHS compliance. This part maintains the same 64-position, 2-row configuration and 2.54mm pitch while offering improved current rating (1.75A) and updated insulation material (PCT instead of PBT).

TE Connectivity AMP Connectors parts 1-5102321-2, 1-5499160-2, 1-5499206-2, and 1-5499922-2 are all active products with RoHS3 compliance. These parts maintain full electrical and mechanical compatibility with the original 3764-6303. The TE Connectivity options provide extended operating temperature range to -65°C (compared to -55°C on the original) and are available in multiple packaging configurations (Tray or Bulk).

For applications where RoHS compliance is not required, TE Connectivity parts 1-499206-2 and 1-499922-2 remain active alternatives, though these carry non-applicable or non-compliant RoHS status respectively.

HARTING part 09185647914 is an active alternative with RoHS3 compliance and extended operating temperature to 125°C. This part maintains the 64-position, 2-row configuration and 2.54mm pitch with gold mating contact finish.

Frequently Asked Questions (FAQ)

Q: Can N3764-6303RB directly replace the obsolete 3764-6303?

A: Yes. N3764-6303RB maintains identical position count (64), row configuration (2), mating pitch (2.54mm), row spacing (2.54mm), mounting type (through hole), shrouding (4-wall), and termination method (solder). The primary differences are improved current rating (1.75A vs. 1A), updated insulation material (PCT vs. PBT), and RoHS compliance. Both operate across -55°C to 105°C.

Q: What are the key differences between TE Connectivity AMP Connectors substitutes?

A: All TE Connectivity AMP Connectors 64-position, 2-row, 2.54mm pitch headers maintain core compatibility. Differences include contact finish thickness on the mating side (15.0µin vs. 30.0µin), post contact finish (Tin vs. Tin-Lead), operating temperature range (-55°C to 105°C vs. -65°C to 105°C), and RoHS compliance status. Parts 1-5102321-2, 1-5499160-2, 1-5499206-2, and 1-5499922-2 are RoHS3 compliant; parts 1-499206-2 and 1-499922-2 are not.

Q: Does HARTING 09185647914 provide equivalent functionality?

A: HARTING 09185647914 maintains the 64-position, 2-row, 2.54mm pitch configuration with through-hole solder termination and 4-wall shrouding. It is RoHS3 compliant and operates to 125°C (higher than the original 105°C). The fastening type differs (short hooks vs. long hooks on the original), and current rating is not specified in available data.

Q: Are there packaging differences among substitute parts?

A: Yes. N3764-6303RB is supplied in Bulk packaging. TE Connectivity parts are available in either Tray or Bulk packaging depending on the specific part number. HARTING 09185647914 is supplied in Tray packaging. Packaging selection should align with procurement and assembly requirements.

Q: Which substitute offers the best compliance profile for new designs?

A: For new designs requiring RoHS compliance, N3764-6303RB, 1-5102321-2, 1-5499160-2, 1-5499206-2, 1-5499922-2, and 09185647914 all meet RoHS3 compliance. N3764-6303RB provides the most direct replacement from the original manufacturer. TE Connectivity AMP Connectors options offer extended temperature range to -65°C and multiple packaging options.

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