TE Connectivity 749809-3 D-Sub 25-Position IDC Plug Connector

Part Overview

The TE Connectivity 749809-3 is a 25-position D-Sub plug connector with male pins, designed for IDC (Insulation Displacement Contact) and discrete wire termination. This connector belongs to the AMPLIMITE HDE-20 series and features a DB/B shell size (Size 3) with free-hanging, in-line mounting configuration. The part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain supply chain continuity and ensure long-term component availability for new designs and legacy system maintenance.

Substiute Parts

749809-3

TE Connectivity AMP ConnectorsIn Stock: 698749809-3 Datasheet

Current PartRFQ

749809-9

TE Connectivity AMP ConnectorsIn Stock: 1127749809-9 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete TE Connectivity 749809-3 is based on electrical and mechanical parameter equivalence within the AMPLIMITE HDE-20 series. The substitute part must maintain identical specifications across the following critical parameters:

• Connector style, type, and pin configuration (D-Sub plug, male pins, 25 positions, 2 rows)
• Shell size and connector layout (Size 3, DB/B configuration)
• Mounting configuration (free-hanging, in-line)
• Termination capability (IDC and discrete wire support)
• Shell material and finish (steel, tin plated)
• Contact material and finish (phosphor bronze with gold flash finish)
• Electrical ratings (250V voltage, wire gauge 22-26 AWG)
• Environmental specifications (operating temperature -55°C to 105°C, UL94 V-0 flammability rating)
• Moisture sensitivity classification (MSL 1)

The substitute part 749809-9 satisfies all these parameters while offering the advantage of active product status and improved regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity 749809-9 is the direct functional equivalent of the obsolete 749809-3. Both parts share identical electrical and mechanical specifications, ensuring pin-for-pin and form-factor compatibility. The primary distinction lies in product lifecycle status and regulatory compliance.

The 749809-3 is classified as obsolete and carries RoHS non-compliant status. The 749809-9 maintains active product status within the AMPLIMITE HDE-20 series and achieves RoHS compliance, making it the appropriate selection for new designs and systems requiring current regulatory adherence. For applications utilizing the obsolete 749809-3, direct substitution with 749809-9 is supported by complete parameter equivalence across all electrical, mechanical, and environmental specifications.

Frequently Asked Questions (FAQ)

Q: Are the 749809-3 and 749809-9 electrically interchangeable?

A: Yes. Both connectors share identical electrical specifications including 250V voltage rating, 22-26 AWG wire gauge support, phosphor bronze contact material with gold flash finish, and operating temperature range of -55°C to 105°C.

Q: Are the 749809-3 and 749809-9 mechanically interchangeable?

A: Yes. Both connectors feature identical mechanical specifications: 25-position D-Sub plug configuration with male pins, 2-row layout, Size 3 (DB/B) shell, steel tin-plated housing, free-hanging in-line mounting, and support for both IDC and discrete wire termination.

Q: What is the primary reason to transition from 749809-3 to 749809-9?

A: The 749809-3 is obsolete with RoHS non-compliant status. The 749809-9 is an active product with RoHS compliance, ensuring long-term availability and regulatory alignment for new designs and legacy system updates.

Q: Does packaging differ between these parts?

A: The 749809-3 packaging specification is not defined in available documentation. The 749809-9 is supplied in bulk packaging. Confirm packaging requirements with your procurement specifications.

Q: Are there any performance differences between these connectors?

A: No. Both connectors deliver identical performance across all specified electrical and mechanical parameters. Differences are limited to product lifecycle status and regulatory compliance classification.

Q: Can 749809-9 be used as a direct replacement in existing assemblies designed for 749809-3?

A: Yes. Complete parameter equivalence supports direct substitution in existing designs without modification to PCB layouts, harness configurations, or mating connector specifications.