TE Connectivity 745351-4 D-Sub Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 745351-4 is a 9-position D-Sub plug connector with right-angle solder termination, designed for through-hole mounting applications. This connector features male pins, a DE shell size (Shell Size 1), and is part of the AMPLIMITE HDP-20 series. The part is classified as obsolete, making identification of active equivalent components essential for ongoing production support, design updates, and component procurement strategies.

Substiute Parts

745351-4

TE Connectivity AMP ConnectorsIn Stock: 925745351-4 Datasheet

Current PartRFQ

5745351-4

TE Connectivity AMP ConnectorsIn Stock: 25155745351-4 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete TE Connectivity 745351-4 is determined by strict equivalence across all electrical and mechanical parameters. The substitute part must maintain identical specifications in the following critical areas:

Electrical Parameters: Current rating (6A), voltage rating (125V), and contact material (brass with gold finish) must remain unchanged to ensure circuit performance and signal integrity.

Mechanical Parameters: Connector style (D-Sub), connector type (plug with male pins), position count (9), row configuration (2), shell size (DE, Shell Size 1), mounting orientation (through-hole right angle), and termination method (solder) must be identical.

Environmental Parameters: Operating temperature range (-55°C to 105°C), material flammability rating (UL94 V-0), and backset spacing (0.545"/13.84mm) must match exactly.

Compliance Parameters: While the main part is RoHS non-compliant, substitute parts may differ in RoHS status based on manufacturing updates and regulatory requirements.

The substitute part 5745351-4 meets all these criteria and is classified as active, providing a direct functional replacement for the obsolete 745351-4.

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity 5745351-4 is the direct functional equivalent for the obsolete 745351-4. All electrical and mechanical parameters are identical, ensuring seamless integration into existing circuit designs and PCB layouts.

Product Status Consideration: The 745351-4 is classified as obsolete, while the 5745351-4 is active. The active status of the substitute part ensures continued availability for production runs, maintenance applications, and design updates.

Compliance Advantage: The 5745351-4 is RoHS compliant, whereas the original 745351-4 is RoHS non-compliant. This compliance upgrade aligns with current regulatory requirements and environmental standards without compromising electrical or mechanical performance.

Dielectric Material Difference: The substitute part features a polyamide (PA) nylon glass-filled dielectric material compared to the thermoplastic dielectric in the original part. Both materials meet the UL94 V-0 flammability rating and operate across the identical temperature range (-55°C to 105°C), confirming functional equivalence.

Packaging Consideration: The substitute part is supplied in tray packaging, which may differ from the original part's packaging specification. This difference does not affect connector performance or compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 5745351-4 be used as a direct replacement for the 745351-4 in existing designs?

A: Yes. The 5745351-4 is electrically and mechanically identical to the 745351-4. All critical parameters including connector type, position count, shell size, current rating (6A), voltage rating (125V), operating temperature range (-55°C to 105°C), and termination method (solder) are identical. The connector will function identically in existing circuit applications.

Q: What is the significance of the RoHS compliance difference?

A: The 5745351-4 is RoHS compliant while the 745351-4 is not. RoHS compliance indicates the absence of restricted substances (lead, cadmium, mercury, hexavalent chromium, PBBs, and PBDEs) in the connector. This compliance status does not affect electrical performance but aligns with current environmental and regulatory standards. The substitute part meets modern procurement requirements.

Q: Are the dielectric materials functionally equivalent?

A: Yes. The 745351-4 uses thermoplastic dielectric material, while the 5745351-4 uses polyamide (PA) nylon glass-filled dielectric. Both materials achieve the same UL94 V-0 flammability rating and support the identical operating temperature range (-55°C to 105°C). The material difference does not impact connector performance, signal integrity, or reliability in the specified operating conditions.

Q: Does the packaging difference affect connector compatibility?

A: No. The 5745351-4 is supplied in tray packaging while the original part's packaging is not specified. Packaging affects handling, storage, and logistics but does not influence connector electrical or mechanical performance. The connector itself is identical regardless of packaging format.

Q: Why is the 745351-4 classified as obsolete?

A: The 745351-4 is obsolete, meaning it is no longer in active production. The 5745351-4 serves as the active replacement, ensuring continued availability for new designs, production support, and maintenance applications. Obsolete status does not indicate a defect but rather a product lifecycle transition.

Q: Are there any performance differences between the two connectors?

A: No. Both connectors maintain identical electrical specifications (6A current rating, 125V voltage rating), mechanical specifications (9-position D-Sub plug, right-angle through-hole mounting, 0.545" backset spacing), and environmental specifications (UL94 V-0 flammability, -55°C to 105°C operating range). Performance is equivalent.

Q: Can the 5745351-4 be used in high-reliability applications?

A: Yes. The 5745351-4 meets all specifications required for high-reliability applications, including UL94 V-0 flammability rating, gold-plated brass contacts, and MSL 1 (unlimited moisture sensitivity level). The connector is suitable for industrial, telecommunications, and aerospace applications within the specified operating parameters.

Q: What is the backset spacing, and why is it important?

A: The backset spacing is 0.545" (13.84mm), which defines the distance from the mating face to the solder tail. This dimension is critical for PCB layout and component placement. Both the 745351-4 and 5745351-4 share identical backset spacing, ensuring compatibility with existing PCB designs.