TE Connectivity 749813-8 D-Sub Receptacle 25 Position Equivalent & Substitute Parts

Part Overview

The TE Connectivity 749813-8 is a 25 position D-Sub receptacle connector featuring female sockets with IDC (Insulation Displacement Contact) termination. This connector is part of the AMPLIMITE HDE-20 series and is classified as obsolete. The product remains in stock with 743 pieces available as new original inventory. Due to its obsolete status, identifying equivalent and substitute parts is necessary for ongoing system maintenance, repair, and component sourcing in applications requiring D-Sub connectivity.

Substiute Parts

749813-8

TE Connectivity AMP ConnectorsIn Stock: 827749813-8 Datasheet

Current PartRFQ

1-749812-1

TE Connectivity AMP ConnectorsIn Stock: 9001-749812-1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 749813-8 is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Connector Style: D-Sub
• Connector Type: Receptacle, Female Sockets
• Number of Positions: 25
• Number of Rows: 2
• Shell Size, Connector Layout: 3 (DB, B)
• Mounting Type: Free Hanging (In-Line)
• Shell Material, Finish: Steel, Tin Plated
• Contact Finish: Gold
• Voltage Rating: 250V
• Operating Temperature Range: -55°C ~ 105°C
• Contact Material: Phosphor Bronze

Variable Parameter (Allows Substitution):

• Termination Type: The 749813-8 uses IDC termination. Substitute parts may employ alternative termination methods such as Crimp, provided all other parameters remain constant.

Wire Gauge Consideration: The 749813-8 accommodates 22-26 AWG wire. Substitute parts with different wire gauge ranges (such as 20-24 AWG) remain functionally compatible within overlapping gauge specifications.

The substitute part 1-749812-1 meets all mandatory matching parameters with the exception of termination method (Crimp vs. IDC) and wire gauge range, making it a valid functional equivalent for applications where crimp termination is acceptable.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: TE Connectivity 1-749812-1

The 1-749812-1 is the designated substitute for the 749813-8. Both connectors are manufactured by TE Connectivity and share identical mechanical and electrical specifications across all critical parameters. The primary distinction is termination methodology: the 749813-8 employs IDC termination, while the 1-749812-1 uses crimp termination.

Compliance and Certification Status: Both parts maintain compliance with RoHS directives. The 749813-8 carries ROHS3 certification, while the 1-749812-1 carries RoHS certification. Both connectors operate within the identical temperature range (-55°C ~ 105°C) and voltage rating (250V), ensuring functional equivalence in standard applications.

Inventory Availability: The 1-749812-1 is currently available with 827 pieces in new original stock, providing superior availability compared to the 749813-8 (743 pieces). Both parts are classified as obsolete, necessitating component sourcing from existing inventory channels.

Termination Method Consideration: Selection between IDC and crimp termination depends on existing assembly infrastructure and wire preparation capabilities. IDC termination (749813-8) requires no stripping or crimping tools, while crimp termination (1-749812-1) requires appropriate crimp tooling and contact application procedures.

Wire Gauge Overlap: The wire gauge specifications overlap in the 22-24 AWG range, permitting direct substitution for applications utilizing wire within this common specification window.

Frequently Asked Questions (FAQ)

Q: Can the 1-749812-1 directly replace the 749813-8 in existing assemblies?

A: Direct mechanical and electrical replacement is possible. The primary consideration is termination method compatibility. If the existing assembly uses IDC termination exclusively, transition to crimp termination (1-749812-1) requires corresponding changes to wire preparation and assembly procedures.

Q: What is the difference between IDC and crimp termination in D-Sub connectors?

A: IDC (Insulation Displacement Contact) termination pierces the wire insulation without requiring prior stripping, using discrete wire application. Crimp termination requires wire stripping and application of a separate crimp contact to the wire before insertion into the connector. Both methods achieve equivalent electrical and mechanical performance when properly executed.

Q: Are there wire gauge compatibility issues when substituting between these parts?

A: The 749813-8 specifies 22-26 AWG, while the 1-749812-1 specifies 20-24 AWG. Wire gauges 22, 23, and 24 AWG are compatible with both connectors. Wire gauges 20, 21, and 25, 26 AWG are exclusive to each part respectively. Substitution is valid only when wire gauge falls within the overlapping range.

Q: Do both connectors meet current RoHS requirements?

A: Both connectors are RoHS compliant. The 749813-8 carries ROHS3 certification, representing the most current RoHS directive compliance level. The 1-749812-1 carries RoHS certification. Both are acceptable for applications requiring RoHS compliance.

Q: What is the operating temperature range for these connectors?

A: Both the 749813-8 and 1-749812-1 operate across the identical temperature range of -55°C to 105°C, ensuring thermal equivalence across standard industrial and commercial applications.

Q: Are these connectors suitable for high-voltage applications?

A: Both connectors carry a 250V voltage rating, suitable for standard industrial signal and control applications. Applications requiring voltage ratings exceeding 250V require alternative connector selection.

Q: What is the significance of the Moisture Sensitivity Level (MSL) rating?

A: Both connectors carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. These connectors do not require special moisture control during storage, handling, or assembly, simplifying logistics and inventory management.

Q: Why are both parts classified as obsolete?

A: Obsolete classification indicates these products are no longer in active production by the manufacturer. However, existing inventory remains available through component distributors. For new designs, current-generation D-Sub connector alternatives from TE Connectivity should be evaluated.