3M 3431-5003 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3431-5003 is a through-hole, right-angle rectangular connector header with 34 positions at 2.54mm pitch, designed for board-to-board or cable interconnection applications. This connector features shrouded 4-wall construction with gold-plated mating contacts and tin-lead post finish. The part is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

3431-5003

3MIn Stock: 12073431-5003 Datasheet

Current PartRFQ

D3431-5002-AR

3MIn Stock: 1130D3431-5002-AR Datasheet

MFR RecommendedRFQ

N3431-5002RB

3MIn Stock: 832N3431-5002RB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3431-5003 is determined by the following critical parameters that must remain constant:

• Connector type (Header)
• Contact type (Male Pin)
• Number of positions (34)
• Number of rows (2)
• Pitch - mating (0.100" / 2.54mm)
• Row spacing - mating (0.100" / 2.54mm)
• Mounting type (Through Hole, Right Angle)
• Shrouding configuration (Shrouded - 4 Wall)
• Contact length - mating (0.240" / 6.10mm)
• Insulation height (0.340" / 8.64mm)
• Operating temperature range (-55°C ~ 105°C)
• Current rating (1.75A)
• Material flammability rating (UL94 V-0)
• Moisture sensitivity level (1 / Unlimited)

The following substitute parts meet all critical electrical and mechanical parameters:

D3431-5002-AR (3M D3000 Series, Active Status) N3431-5002RB (3M 3000 Series, Active Status)

Parameter Comparison

Engineering Selection Recommendations

Both D3431-5002-AR and N3431-5002RB are functionally equivalent to the 3431-5003 across all critical electrical and mechanical parameters. Selection between these substitutes should be based on the following factors:

D3431-5002-AR (3M D3000 Series)

• Active product status with ongoing manufacturer support
• ROHS3 compliant
• Supplied in tray packaging
• Represents the manufacturer's current-generation equivalent

N3431-5002RB (3M 3000 Series)

• Active product status with ongoing manufacturer support
• ROHS3 compliant
• Supplied in bulk packaging
• Maintains the original 3000 series designation

Both parts satisfy compliance requirements and are suitable for direct substitution in applications currently using the 3431-5003.

Frequently Asked Questions (FAQ)

Q: Can D3431-5002-AR and N3431-5002RB be used interchangeably with 3431-5003? A: Yes. Both substitute parts maintain identical electrical and mechanical specifications across all critical parameters including pitch, contact configuration, mating contact length, insulation height, operating temperature range, and current rating.

Q: What is the primary difference between the two substitute parts? A: The primary differences are product series designation (D3000 vs. 3000), packaging format (tray vs. bulk), and contact material composition. Both meet identical functional requirements.

Q: Does the packaging format affect electrical or mechanical compatibility? A: No. Packaging format (tray vs. bulk) affects only procurement and handling logistics, not connector performance or compatibility.

Q: Are both substitute parts RoHS compliant? A: Yes. Both D3431-5002-AR and N3431-5002RB are ROHS3 compliant, whereas the original 3431-5003 is RoHS non-compliant.

Q: What is the moisture sensitivity level for these connectors? A: All three parts (main and substitutes) have a moisture sensitivity level of 1 (Unlimited), indicating no special moisture control requirements during storage or handling.

Q: Can these connectors be used in the same PCB footprint? A: Yes. All three parts share identical mounting type (through hole, right angle), pitch spacing, and physical dimensions, allowing direct PCB footprint compatibility.