3440-5002UG Equivalent & Substitute Parts

Part Overview

The 3440-5002UG is a rectangular connector header manufactured by 3M, designed for through-hole, right-angle board-to-cable/wire applications. This 30-position connector operates across a wide temperature range and features shrouded design with keying slot and mounting flange. The part is currently obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Manufacturer Part Number	3440-5002UG
Manufacturer	3M
Category	Rectangular Connectors
Connector Type	Header
Number of Positions	30
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Contact Type	Male Pin
Shrouding	Shrouded - 4 Wall
Termination	Solder
Current Rating	1.75A
Operating Temperature	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the 3440-5002UG is determined by strict equivalence across the following critical parameters:

Connector Configuration: 30-position, 2-row header with 0.100" (2.54mm) pitch and row spacing
Mounting and Orientation: Through-hole, right-angle mounting with shrouded 4-wall design
Electrical Characteristics: 1.75A current rating and -55°C to 105°C operating temperature range
Contact System: Male pin contacts with solder termination and push-pull fastening
Physical Dimensions: Contact length (mating and post), insulation height, and overall form factor
Material and Finish: Copper alloy contacts with gold mating finish and tin-lead post finish; PCT polyester glass-filled insulation

The substitute part N3440-5002RB maintains full compatibility across all these parameters while offering improved product status and compliance characteristics.

Parameter Comparison

Parameter	3440-5002UG	N3440-5002RB
Manufacturer	3M	3M
Series	3000	3000
Number of Positions	30	30
Number of Rows	2	2
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Connector Type	Header	Header
Contact Type	Male Pin	Male Pin
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall
Termination	Solder	Solder
Fastening Type	Push-Pull	Push-Pull
Contact Length - Mating	0.240" (6.10mm)	0.240" (6.10mm)
Contact Length - Post	0.112" (2.84mm)	0.112" (2.84mm)
Insulation Height	0.340" (8.64mm)	0.340" (8.64mm)
Contact Shape	Square	Square
Contact Finish - Mating	Gold	Gold
Contact Finish - Post	Tin-Lead	Tin
Contact Material	Copper Alloy	Copper Alloy
Insulation Material	PCT, Polyester, Glass Filled	PCT, Polyester, Glass Filled
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0
Current Rating	1.75A	1.75A
Insulation Color	Black	Black
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS	8536.69.4040	8536.69.4040

Engineering Selection Recommendations

The N3440-5002RB is the direct substitute for the obsolete 3440-5002UG. Both connectors are electrically and mechanically equivalent across all functional parameters. The primary distinctions are:

Product Status: The 3440-5002UG is obsolete, while N3440-5002RB is active and currently in production. This ensures long-term availability and supply chain continuity.

RoHS Compliance: The N3440-5002RB is RoHS compliant, meeting current environmental and regulatory requirements for new designs and manufacturing. The 3440-5002UG is RoHS non-compliant.

Contact Finish - Post: The N3440-5002RB uses pure tin post finish, while the 3440-5002UG uses tin-lead. Both finishes are compatible with standard solder processes and provide equivalent electrical performance.

Packaging: The N3440-5002RB is supplied in bulk packaging, suitable for production environments.

For new designs, retrofit applications, and ongoing system support, the N3440-5002RB is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Are the 3440-5002UG and N3440-5002RB mechanically interchangeable?

A: Yes. Both connectors share identical mechanical specifications including 30-position configuration, 2-row layout, 0.100" (2.54mm) pitch, through-hole right-angle mounting, and shrouded 4-wall design. PCB footprints and mating interfaces are identical.

Q: What is the difference in contact finish between these parts?

A: The 3440-5002UG uses tin-lead post finish, while the N3440-5002RB uses pure tin post finish. Both provide equivalent electrical conductivity and solder compatibility. The mating contact finish (gold) is identical on both parts.

Q: Can the N3440-5002RB be used as a direct replacement in existing assemblies?

A: Yes. The N3440-5002RB is a direct functional and physical replacement. No design modifications or PCB changes are required.

Q: Why is the 3440-5002UG listed as obsolete?

A: The 3440-5002UG has been superseded by the N3440-5002RB in 3M's product line. The newer part offers improved compliance status and active production support.

Q: What is the significance of RoHS compliance for the N3440-5002RB?

A: RoHS compliance indicates the part meets restrictions on hazardous substances and is suitable for applications subject to environmental regulations. This is required for many commercial and industrial applications.

Q: Are there any electrical performance differences between these connectors?

A: No. Both parts maintain identical electrical specifications including 1.75A current rating, -55°C to 105°C operating temperature range, and UL94 V-0 flammability rating.

Q: What packaging options are available?

A: The 3440-5002UG was supplied in standard packaging (status now obsolete). The N3440-5002RB is available in bulk packaging for production use.

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