3M 3440-6602UG Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3440-6602UG is a shrouded rectangular connector header with 30 positions, 2 rows, and 0.100" (2.54mm) pitch designed for through-hole mounting with solder termination. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The connector features a 4-wall shrouded design with keying slot and mounting flange, suitable for board-to-cable/wire applications in industrial and commercial electronics.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	30
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Shrouding	Shrouded - 4 Wall
Mounting Type	Through Hole
Termination	Solder
Contact Shape	Square
Operating Temperature	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0
Insulation Color	Black
Current Rating	1A
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 3440-6602UG is determined by strict equivalence across the following critical parameters:

Connector type (Header), contact type (Male Pin), and configuration (30 positions, 2 rows)
Mating pitch (0.100" / 2.54mm) and row spacing (0.100" / 2.54mm)
Shrouding design (Shrouded - 4 Wall) and mounting method (Through Hole)
Termination type (Solder) and contact shape (Square)
Operating temperature range (-55°C ~ 105°C minimum)
Flammability rating (UL94 V-0)
Moisture sensitivity level (1 - Unlimited)

Substitute parts must maintain compatibility across these parameters. Variations in contact finish thickness, post length, insulation material composition, and fastening mechanism (Push-Pull vs. Latch Lock) are permitted where the core electrical and mechanical interface remains unchanged.

Parameter Comparison

Parameter	3440-6602UG (3M)	N3440-6002RB (3M)	102321-7 (TE)	499206-7 (TE)	499922-7 (TE)	71918-130LF (Amphenol)	71918-130RLF (Amphenol)
Manufacturer	3M	3M	TE Connectivity	TE Connectivity	TE Connectivity	Amphenol ICC	Amphenol ICC
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Connector Type	Header	Header	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Number of Positions	30	30	30	30	30	30	30
Number of Rows	2	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)	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)	0.100" (2.54mm)
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Contact Shape	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold or Gold-Palladium	Gold or Gold-Palladium	Gold or Gold-Palladium	Gold, GXT™	Gold, GXT™
Contact Finish - Post	Tin-Lead	Tin	Tin-Lead	Tin-Lead	Tin-Lead	Tin	Tin
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 105°C	Not specified	Not specified
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Insulation Color	Black	Black	Black	Black	Black	Gray	Gray
Current Rating	1A	1.75A	1A per Contact	1A	1A	Not specified	Not specified
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	Non-compliant	Compliant	Non-compliant	Non-compliant	Non-compliant	Compliant	Compliant

Engineering Selection Recommendations

Primary Substitute - 3M N3440-6002RB: This part is the direct 3M equivalent with active product status and RoHS compliance. It maintains identical core specifications with improved current rating (1.75A vs. 1A) and uses Push-Pull fastening instead of Latch Lock. The insulation material differs (PCT vs. PBT) but both meet UL94 V-0 requirements. Recommended for designs requiring RoHS compliance and continued manufacturer support.

TE Connectivity Options - 102321-7, 499206-7, 499922-7: These AMP-Latch series headers provide active product status with extended operating temperature range (-65°C vs. -55°C). All three maintain the core 30-position, 2-row, 2.54mm pitch configuration. Differences exist in contact post length and contact finish thickness. These parts are RoHS non-compliant and REACH-affected. Selection among these three depends on specific mechanical clearance requirements and contact finish specifications.

Amphenol ICC Options - 71918-130LF, 71918-130RLF: Both Quickie™ series parts offer RoHS compliance and active product status. These connectors feature Phosphor Bronze contacts with GXT™ gold finish and differ from the original in insulation color (Gray vs. Black) and material composition. Operating temperature range is not specified in available data. These parts provide an alternative from a third manufacturer with compliance advantages.

Compliance Considerations: The original 3440-6602UG is RoHS non-compliant. For new designs or applications requiring RoHS compliance, N3440-6002RB, 71918-130LF, or 71918-130RLF are appropriate selections. For legacy system maintenance where RoHS compliance is not required, all substitute options remain functionally equivalent.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 3440-6602UG with N3440-6002RB in an existing design?

A: Yes. Both parts share identical core specifications: 30 positions, 2 rows, 0.100" pitch, shrouded 4-wall design, through-hole mounting, and solder termination. The primary differences are fastening type (Push-Pull vs. Latch Lock) and current rating (1.75A vs. 1A). Mechanical fit and electrical performance are equivalent. Verify that the Push-Pull fastening mechanism is compatible with your mating connector design.

Q: What is the difference between the TE Connectivity parts (102321-7, 499206-7, 499922-7)?

A: All three are AMP-Latch series headers with identical core specifications. Differences are minor: contact post length varies (0.155", 0.110", 0.110" respectively), and contact finish thickness on the mating surface differs (30µin, 30µin, 15µin). These variations do not affect electrical or mechanical compatibility. Selection depends on specific PCB design requirements and contact finish specifications for your application.

Q: Are the Amphenol ICC 71918-130LF and 71918-130RLF interchangeable?

A: Yes. Both parts are identical Quickie™ series headers with the same 30-position, 2-row, 2.54mm pitch configuration. The primary difference is packaging: 71918-130LF is supplied in Tube packaging, while 71918-130RLF is also supplied in Tube. Both offer RoHS compliance and active product status. Electrical and mechanical specifications are equivalent.

Q: Why does the insulation color differ between substitute options?

A: Insulation color is a cosmetic specification that does not affect electrical or mechanical function. The original 3440-6602UG uses black insulation, while Amphenol ICC parts use gray. This difference reflects different manufacturing standards and material formulations across manufacturers but does not impact connector performance or compatibility.

Q: Which substitute part should I select for a new design?

A: For new designs, N3440-6002RB (3M) is recommended as the primary choice due to active product status, RoHS compliance, and direct manufacturer lineage. If multi-source qualification is required, 71918-130LF or 71918-130RLF (Amphenol ICC) provide alternative suppliers with RoHS compliance. TE Connectivity options (102321-7, 499206-7, 499922-7) are suitable if RoHS non-compliance is acceptable for your application.

Q: What is the current rating difference between the original and N3440-6002RB?

A: The original 3440-6602UG is rated at 1A per contact, while N3440-6002RB is rated at 1.75A per contact. This represents an improvement in current-carrying capacity. If your design operates at or near the 1A limit, the higher rating of N3440-6002RB provides additional margin. Verify that your mating connector and cable specifications support the higher current rating if utilized.

Q: Are there packaging differences between substitute parts?

A: Yes. Packaging varies: N3440-6002RB is supplied in Bulk, TE Connectivity parts in Tray, and Amphenol ICC parts in Tube. Packaging does not affect connector specifications or performance but may impact procurement, handling, and storage procedures. Confirm packaging requirements with your supply chain and assembly processes.

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