3M 3428-6302-UG Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3428-6302-UG is a shrouded rectangular connector header with 20 positions at 2.54mm pitch, designed for through-hole mounting with solder termination. This connector features a 2-row configuration with male pins, gold-plated mating contacts, and tin-lead plated posts. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	20
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
Operating Temperature	-55°C ~ 105°C
Current Rating	1A
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution for the 3428-6302-UG is determined by strict equivalence in the following parameters:

Connector type: Header
Contact type: Male pin
Number of positions: 20
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
Material flammability rating: UL94 V-0
Insulation color: Black

Substitute parts are grouped into two categories based on product status and compliance:

Active Status Parts: D3428-6002-AR, N3428-6002RB, 499206-4, 5102321-4, 53611-S20-4LF, 53611-S20-6LF, 5499206-4, 71980-120LF, and RX-H201TD-1190(LF)(SN) maintain the core electrical and mechanical interface required for direct substitution.

Compliance Variations: Parts differ in RoHS compliance status, contact material composition, insulation material formulation, and fastening mechanism (push-pull versus latch lock/eject hooks). These variations do not affect the fundamental mating interface but may impact application-specific requirements.

Parameter Comparison

Parameter	3428-6302-UG	D3428-6002-AR	N3428-6002RB	499206-4	5102321-4	53611-S20-4LF	53611-S20-6LF	5499206-4	71980-120LF	RX-H201TD-1190(LF)(SN)
Manufacturer	3M	3M	3M	TE Connectivity	TE Connectivity	Amphenol ICC	Amphenol ICC	TE Connectivity	Amphenol ICC	JST Sales America
Connector Type	Header	Header	Header	Header	Header	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Number of Positions	20	20	20	20	20	20	20	20	20	20
Number of Rows	2	2	2	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)	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)	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	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	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Kinked Pin, Solder	Solder
Fastening Type	Latch Lock/Eject Hooks, Long	Push-Pull	Push-Pull	Latch Lock/Eject Hooks, Long	Latch Lock/Eject Hooks, Long	Latch Lock/Eject Hooks	Latch Lock/Eject Hooks	Latch Lock/Eject Hooks, Long	Latch Lock/Eject Hooks	Latch Lock/Eject Hooks, Long
Contact Length - Mating	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.230" (5.84mm)	0.230" (5.84mm)	0.240" (6.10mm)	0.228" (5.80mm)	Not specified
Contact Length - Post	0.112" (2.84mm)	0.112" (2.84mm)	0.112" (2.84mm)	0.110" (2.79mm)	0.155" (3.94mm)	0.120" (3.05mm)	0.150" (3.81mm)	0.110" (2.79mm)	0.114" (2.90mm)	0.110" (2.79mm)
Overall Contact Length	0.652" (16.56mm)	0.652" (16.56mm)	0.652" (16.56mm)	0.639" (16.23mm)	0.684" (17.37mm)	Not specified	Not specified	0.639" (16.23mm)	Not specified	Not specified
Insulation Height	0.680" (17.27mm)	0.680" (17.27mm)	0.680" (17.27mm)	0.549" (13.94mm)	0.549" (13.94mm)	0.640" (16.26mm)	0.640" (16.26mm)	0.549" (13.94mm)	0.685" (17.40mm)	0.689" (17.50mm)
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold	Gold or Gold-Palladium	Gold or Gold-Palladium	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold or Gold-Palladium	Gold, GXT™	Tin
Contact Finish - Post	Tin-Lead	Tin	Tin	Tin-Lead	Tin	Tin	Tin	Tin	Tin	Tin
Contact Material	Copper Alloy	Brass	Copper Alloy	Not specified	Not specified	Phosphor Bronze	Phosphor Bronze	Not specified	Phosphor Bronze	Brass
Insulation Material	PBT, Polyester, Glass Filled	PCT, Polyester, Glass Filled	PCT, Polyester, Glass Filled	Not specified	Not specified	Thermoplastic	Thermoplastic	Not specified	Thermoplastic, Glass Filled	PBT, Glass Filled
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 105°C	Not specified	Not specified	-65°C ~ 105°C	Not specified	-55°C ~ 85°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	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	Black	Black	Black	Blue	Black
Current Rating	1A	1.75A	1.75A	1A	1A per Contact	Not specified	Not specified	1A	Not specified	1A
RoHS Status	RoHS non-compliant	RoHS Compliant	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

The 3428-6302-UG is obsolete and requires substitution for new designs or ongoing procurement. All listed substitute parts maintain the core mating interface and mechanical compatibility.

Primary Substitutes (Closest Electrical and Mechanical Match):

N3428-6002RB and D3428-6002-AR are 3M products that preserve the original manufacturer lineage. N3428-6002RB is ROHS3 compliant with active product status and maintains the same contact length specifications. D3428-6002-AR is RoHS compliant with upgraded current rating to 1.75A and active product status, though it uses push-pull fastening instead of latch lock/eject hooks.

Alternative Substitutes (Different Manufacturers, Equivalent Interface):

5499206-4 and 499206-4 are TE Connectivity AMP-Latch series connectors with latch lock/eject hooks matching the original fastening mechanism. Both are RoHS compliant and active. 5499206-4 offers significantly higher inventory availability (500,200 units).

53611-S20-6LF and 53611-S20-4LF are Amphenol ICC Quickie™ series connectors with RoHS compliance and active status. These use latch lock/eject hooks and differ in contact post length (0.150" versus 0.120").

5102321-4 is a TE Connectivity AMP-Latch connector with extended contact post length (0.155") and ROHS3 compliance, suitable for applications requiring deeper PCB penetration.

71980-120LF is an Amphenol ICC Quickie™ connector with kinked pin termination and RoHS compliance. Insulation color is blue rather than black.

RX-H201TD-1190(LF)(SN) is a JST Sales America RX series connector with ROHS3 compliance and tin mating contact finish. Operating temperature range is reduced to -55°C ~ 85°C.

Compliance Considerations:

For applications requiring RoHS compliance, all substitute parts except 499206-4 meet this requirement. For ROHS3 compliance specifically, select N3428-6002RB, 5102321-4, or RX-H201TD-1190(LF)(SN).

Frequently Asked Questions (FAQ)

Q: Can I directly replace the 3428-6302-UG with any of these substitute parts?

A: Yes, all listed substitute parts maintain the same 20-position, 2-row, 2.54mm pitch header interface. Physical and electrical compatibility is preserved. However, verify fastening mechanism compatibility with your mating connector, as some substitutes use push-pull fastening while others use latch lock/eject hooks.

Q: What is the difference between latch lock/eject hooks and push-pull fastening?

A: Latch lock/eject hooks provide positive mechanical retention with audible or tactile feedback during mating and unmating. Push-pull fastening uses a sliding mechanism for connection and disconnection. The original 3428-6302-UG uses latch lock/eject hooks. Substitutes with push-pull fastening (D3428-6002-AR) may require mating connector compatibility verification.

Q: Does RoHS compliance affect electrical performance?

A: RoHS compliance affects material composition, particularly the elimination of lead from solder plating. The 3428-6302-UG uses tin-lead post plating and is RoHS non-compliant. RoHS-compliant substitutes use tin-only post plating. This does not affect electrical performance but may impact thermal cycling reliability in extreme applications.

Q: Why do some substitutes have different current ratings?

A: Current rating differences reflect contact material and cross-sectional area variations. D3428-6002-AR and N3428-6002RB are rated at 1.75A compared to the original 1A rating, indicating improved contact design. The original 1A rating remains valid for all substitutes in standard applications.

Q: What is the significance of contact post length variations?

A: Contact post length determines PCB penetration depth. The original 3428-6302-UG has 0.112" (2.84mm) post length. Substitutes range from 0.110" to 0.155". Longer posts (5102321-4 at 0.155") provide deeper engagement for thicker PCBs or applications requiring maximum mechanical retention. Shorter posts may be suitable for thin PCBs or space-constrained designs.

Q: Are there packaging differences among the substitutes?

A: Yes. The original 3428-6302-UG packaging is not specified. Substitutes are available in tray, bulk, or tube packaging. D3428-6002-AR and most TE Connectivity parts use tray packaging. N3428-6002RB is bulk packaged. 71980-120LF is tube packaged. Verify packaging requirements for your procurement and assembly processes.

Q: Can I use RX-H201TD-1190(LF)(SN) in applications requiring the full -55°C ~ 105°C temperature range?

A: No. RX-H201TD-1190(LF)(SN) is rated for -55°C ~ 85°C, which is narrower than the original -55°C ~ 105°C range. This substitute is suitable only for applications within its specified temperature limits.

Q: What is the difference between gold and tin mating contact finishes?

A: Gold provides superior corrosion resistance and lower contact resistance, particularly in low-signal applications. Tin offers cost reduction and adequate performance for standard applications. The original 3428-6302-UG uses gold mating contacts. Most substitutes maintain gold or gold-palladium finishes. RX-H201TD-1190(LF)(SN) uses tin mating contacts, which may be acceptable for non-critical signal applications.

Q: Which substitute offers the best inventory availability?

A: 5499206-4 has the highest inventory availability at 500,200 units in stock, making it the most readily available substitute for immediate procurement needs.

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