3M 3429-1602 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3429-1602 is a through-hole, right-angle rectangular connector header with 26 positions arranged in 2 rows at 0.100" (2.54mm) pitch. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The connector features shrouded 3-wall construction with latch lock/eject hooks and gold-plated mating contacts suitable for board-to-board or cable applications in industrial and commercial electronics.

Substiute Parts

3429-1602

3MIn Stock: 7603429-1602 Datasheet

Current PartRFQ

N3429-1302RB

3MIn Stock: 1083N3429-1302RB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3M 3429-1602 is determined by strict equivalence across the following critical parameters:

• Connector type (Header), contact type (Male Pin), and style (Board to Board or Cable)
• Position count (26) and row configuration (2 rows)
• Mating pitch (0.100" / 2.54mm) and row spacing (0.100" / 2.54mm)
• Mounting method (Through Hole, Right Angle) and shrouding design (Shrouded - 3 Wall)
• Termination method (Solder) and fastening mechanism (Latch Lock/Eject Hooks, Long)
• Contact geometry (Square shape, 0.240" mating length, 0.112" post length)
• Insulation material (PCT Polyester, Glass Filled) and flammability rating (UL94 V-0)
• Operating temperature range (-55°C ~ 105°C)

The 3M N3429-1302RB meets all these criteria and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The 3M N3429-1302RB is the direct substitute for the obsolete 3429-1602. Both connectors share identical mechanical and electrical specifications across all critical parameters including pitch, position count, mounting configuration, and operating temperature range.

Key distinctions between the parts:

The N3429-1302RB carries Active product status, ensuring ongoing availability and manufacturing support. The substitute part is ROHS3 compliant and includes REACH Unaffected certification, meeting current regulatory requirements for new designs and production. The original 3429-1602 is RoHS non-compliant and lacks these certifications.

The N3429-1302RB provides a higher current rating of 1.75A compared to the 1A rating of the 3429-1602, offering improved electrical capacity within the same physical form factor. The post contact finish differs slightly: the original uses Tin-Lead while the substitute uses Tin, reflecting modern manufacturing standards.

For new designs, production continuity, or compliance-driven applications, the N3429-1302RB is the appropriate selection. For legacy system maintenance requiring exact historical equivalence, the 3429-1602 specifications remain the reference baseline.

Frequently Asked Questions (FAQ)

Q: Can the N3429-1302RB be used as a direct replacement for the 3429-1602 in existing designs?

A: Yes. The N3429-1302RB is mechanically and electrically compatible with the 3429-1602. All critical parameters including pitch, position count, mounting type, shrouding, and operating temperature range are identical. The higher current rating (1.75A vs 1A) and improved compliance certifications make it suitable for direct substitution.

Q: What is the difference between the Tin-Lead and Tin post finishes?

A: The 3429-1602 uses Tin-Lead post finish, while the N3429-1302RB uses Tin post finish. Both provide equivalent solderability and electrical performance. The Tin finish reflects current manufacturing practices and RoHS compliance requirements.

Q: Why is the N3429-1302RB rated for 1.75A while the 3429-1602 is rated for 1A?

A: The higher current rating reflects improved contact design and manufacturing tolerances in the active product. Both connectors use identical contact geometry and materials. The 1.75A rating provides additional electrical capacity without changing the physical or mechanical specifications.

Q: Are there any compatibility concerns with PCB layouts designed for the 3429-1602?

A: No. The N3429-1302RB maintains identical pitch (0.100" / 2.54mm), row spacing (0.100" / 2.54mm), mounting hole positions, and overall dimensions. PCB layouts designed for the 3429-1602 require no modification for the N3429-1302RB.

Q: What certifications does the N3429-1302RB carry that the 3429-1602 does not?

A: The N3429-1302RB is ROHS3 compliant and REACH Unaffected. The 3429-1602 is RoHS non-compliant. Both carry UL94 V-0 flammability rating and EAR99 export classification.

Q: Is the N3429-1302RB available in the same packaging as the 3429-1602?

A: Both parts are supplied with equivalent packaging suitable for through-hole connector applications. Packaging specifications are not differentiated between the two parts.