3M 3764-5203 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3764-5203 is a through-hole, right-angle rectangular connector header with 64 positions at 0.100" (2.54mm) pitch, designed for board-to-board or cable interconnection applications. The connector features shrouded 4-wall construction with latch lock/eject hooks and gold-plated mating contacts. This part is classified as obsolete, making equivalent 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, Right Angle
Shrouding	Shrouded - 4 Wall
Contact Finish - Mating	Gold
Material Flammability Rating	UL94 V-0
Operating Temperature Range	-55°C ~ 105°C
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 3M 3764-5203 is determined by strict alignment of the following critical parameters:

Connector Configuration: 64-position, 2-row header with 0.100" (2.54mm) mating pitch and row spacing
Mounting and Orientation: Through-hole, right-angle mounting
Shrouding Design: Shrouded 4-wall construction with keying slot and mounting flange
Contact System: Male pin contacts with square shape and gold mating finish
Termination Method: Solder termination with latch lock/eject fastening
Environmental Rating: UL94 V-0 flammability compliance and MSL 1 moisture sensitivity

All identified substitute parts meet these core electrical and mechanical parameters. Variations in contact post length, insulation material composition, contact finish thickness, and product status are documented but do not preclude functional substitution within the specified parameter envelope.

Parameter Comparison

Parameter	3M 3764-5203	HARTING 09185646913	TE Connectivity 1-499786-2	TE Connectivity 1-5499141-2	Amphenol ICC 71922-164LF	Amphenol ICC 71922-264LF
Manufacturer	3M	HARTING	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors	Amphenol ICC (FCI)	Amphenol ICC (FCI)
Series	3000	SEK	AMP-Latch	AMP-Latch	Quickie™	Quickie™
Product Status	Obsolete	Active	Active	Active	Active	Active
Number of Positions	64	64	64	64	64	64
Number of Rows	2	2	2	2	2	2
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	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)	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	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Contact Shape	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold or Gold-Palladium	Gold or Gold-Palladium	Gold, GXT™	Gold, GXT™
Contact Length - Mating	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.228" (5.80mm)	0.228" (5.80mm)
Contact Length - Post	0.155" (3.94mm)	0.114" (2.90mm)	0.110" (2.79mm)	0.110" (2.79mm)	0.114" (2.90mm)	0.114" (2.90mm)
Insulation Height	0.340" (8.64mm)	0.335" (8.51mm)	0.315" (8.00mm)	0.315" (8.00mm)	0.339" (8.61mm)	0.339" (8.61mm)
Termination	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Latch Lock/Eject Hooks, Short	Latch Lock/Eject Hooks, Short	Latch Lock/Eject Hooks, Long	Latch Lock/Eject Hooks, Long	Latch Lock/Eject Hooks	Latch Lock/Eject Hooks, Short
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Operating Temperature Range	-55°C ~ 105°C	-55°C ~ 125°C	-65°C ~ 105°C	-65°C ~ 105°C	Not specified	Not specified
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS non-compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitutes for Active Production:

The TE Connectivity 1-5499141-2 and HARTING 09185646913 are the preferred substitutes for new designs and ongoing procurement. Both parts are active products with current manufacturer support. The TE Connectivity 1-5499141-2 offers RoHS compliance and REACH unaffected status, making it suitable for regulated applications. The HARTING 09185646913 provides ROHS3 compliance with extended operating temperature range to 125°C.

Secondary Substitutes:

The Amphenol ICC 71922-164LF and 71922-264LF (Quickie™ series) are active alternatives with RoHS compliance. These parts feature phosphor bronze contacts and thermoplastic insulation materials. The 71922-164LF and 71922-264LF differ in fastening hook length (standard versus short) but are otherwise electrically and mechanically equivalent.

The TE Connectivity 1-499786-2 remains active but carries RoHS non-compliant status and REACH affected designation, limiting suitability for new regulated designs.

Compliance Considerations:

For applications requiring RoHS compliance, select from: 1-5499141-2, 09185646913, 71922-164LF, or 71922-264LF. For REACH unaffected status, prioritize 1-5499141-2 or 09185646913.

Frequently Asked Questions (FAQ)

Q: Can the HARTING 09185646913 directly replace the 3M 3764-5203 in existing assemblies?

A: Yes. Both connectors share identical mating pitch (0.100"), position count (64), row configuration (2), shrouding design (4-wall), and contact finish (gold). The HARTING part features slightly shorter contact post length (0.114" versus 0.155") and different insulation material (PBT glass-filled versus PCT polyester), but these variations remain within the functional substitution envelope for standard through-hole solder applications.

Q: What is the difference between the TE Connectivity 1-499786-2 and 1-5499141-2?

A: Both are AMP-Latch series connectors with identical electrical and mechanical specifications. The primary differences are packaging (bulk versus tray) and compliance status. The 1-5499141-2 is RoHS compliant and REACH unaffected, while the 1-499786-2 is RoHS non-compliant and REACH affected. For new designs, the 1-5499141-2 is the preferred choice.

Q: How do the Amphenol ICC 71922-164LF and 71922-264LF differ?

A: Both Quickie™ series parts are functionally equivalent with identical pitch, position count, and contact specifications. The distinction lies in fastening hook length: the 71922-164LF features standard-length hooks, while the 71922-264LF has short hooks. Selection depends on mating connector hook geometry requirements.

Q: Are there temperature rating differences between substitutes?

A: Yes. The 3M 3764-5203 operates from -55°C to 105°C. The HARTING 09185646913 extends to 125°C, and the TE Connectivity AMP-Latch series (1-499786-2 and 1-5499141-2) operate from -65°C to 105°C. The Amphenol ICC Quickie™ series does not specify operating temperature. For applications requiring extended temperature range, the HARTING part is recommended.

Q: Which substitute offers the best compliance profile for regulated industries?

A: The TE Connectivity 1-5499141-2 provides the most comprehensive compliance: RoHS compliant, REACH unaffected, and active product status. The HARTING 09185646913 offers ROHS3 compliance with REACH unaffected status. Both are suitable for regulated applications requiring current manufacturer support.

Q: Can I mix substitute parts in the same assembly?

A: All identified substitutes are mechanically and electrically compatible within the specified parameter envelope. However, assembly consistency and traceability practices typically require using a single part number per design revision to maintain documentation integrity and supply chain control.

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