Equivalent & Substitute Parts for L77DFEF09S D-Sub Receptacle Connector

Part Overview

The L77DFEF09S is a 9-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This panel-mount female socket connector is designed for signal applications requiring solder cup termination. The part is currently active in production with 881 pieces in stock inventory.

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the connector family, allowing for component interchangeability in applications where mounting configuration or packaging format differences are acceptable.

Substiute Parts

L77DFEF09S

Amphenol ICC (Commercial Products)In Stock: 911L77DFEF09S Datasheet

Current PartRFQ

DEP09S064TLF

Amphenol ICC (FCI)In Stock: 1314DEP09S064TLF Datasheet

SimilarRFQ

DEP09S065TLF

Amphenol ICC (FCI)In Stock: 1147DEP09S065TLF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the L77DFEF09S is determined by the following core parameters that must remain constant:

Critical Matching Parameters:

• Connector style: D-Sub
• Connector type: Receptacle, Female Sockets
• Number of positions: 9
• Number of rows: 2
• Shell size and layout: 1 (DE, E)
• Termination method: Solder Cup
• Shell material and finish: Steel, Tin Plated
• Contact material: Copper Alloy
• Contact finish: Gold
• Current rating: 7.5A per contact
• Operating temperature range: -55°C to 125°C
• Material flammability rating: UL94 V-0
• RoHS compliance: Yes

Allowable Variations:

• Mounting type: Panel Mount (main part) versus Free Hanging/In-Line (substitute parts)
• Packaging format: Bag (main part) versus Tray or Bulk (substitute parts)
• Voltage rating: 300V (main part) versus 1000V (substitute parts) — higher voltage rating maintains compatibility
• Contact finish thickness: 20.0µin (main part) versus Flash or 30.0µin (substitute parts)
• Series designation: DF (main part) versus DP (substitute parts)

The substitute parts DEP09S064TLF and DEP09S065TLF maintain all critical electrical and mechanical parameters while differing in mounting configuration and packaging. These differences do not affect connector compatibility in applications where the mounting method can be adapted.

Parameter Comparison

Engineering Selection Recommendations

L77DFEF09S Selection Criteria:

• Required for panel-mount applications where the connector housing must be mounted directly to an enclosure or PCB panel
• Specified when bag packaging is required for component handling and storage
• Suitable for applications with maximum voltage requirements of 300V

DEP09S064TLF Selection Criteria:

• Required for free-hanging or in-line applications where the connector is integrated into cable assemblies or harnesses
• Specified when tray packaging is required for automated assembly processes
• Suitable for applications with voltage requirements up to 1000V
• Contact finish thickness specified as flash coating

DEP09S065TLF Selection Criteria:

• Required for free-hanging or in-line applications where the connector is integrated into cable assemblies or harnesses
• Specified when bulk packaging is required for high-volume production
• Suitable for applications with voltage requirements up to 1000V
• Contact finish thickness specified as 30.0µin (0.76µm)

All three parts maintain active product status, RoHS compliance, and identical electrical performance characteristics within their respective voltage ratings. Selection between substitute parts is determined by mounting configuration requirements and packaging format compatibility with assembly processes.

Frequently Asked Questions (FAQ)

Q: Can DEP09S064TLF or DEP09S065TLF be used as direct replacements for L77DFEF09S in panel-mount applications?

A: No. The substitute parts are configured for free-hanging or in-line mounting, not panel mounting. The L77DFEF09S includes a panel-mount flange feature required for direct enclosure mounting. Substitution is only valid when the application can accommodate in-line connector configuration.

Q: What is the difference between DEP09S064TLF and DEP09S065TLF?

A: Both parts are functionally equivalent 9-position D-Sub receptacles with identical electrical ratings and operating parameters. The primary differences are packaging format (Tray versus Bulk) and contact finish thickness (Flash versus 30.0µin). Selection depends on assembly process requirements and finish durability specifications.

Q: Are the substitute parts compatible with the same mating connectors as L77DFEF09S?

A: Yes. All three parts use identical shell size and layout (1 DE, E), 9-position configuration, and female socket contact type. They are mechanically and electrically compatible with standard D-Sub 9-position male plugs and connectors.

Q: Why do the substitute parts have a higher voltage rating (1000V versus 300V)?

A: The substitute parts are rated for higher voltage applications. A higher voltage rating does not prevent use in lower voltage applications. The 1000V rating of DEP09S064TLF and DEP09S065TLF provides additional design margin and flexibility for applications with voltage requirements up to 1000V.

Q: What does the GXT™ contact finish on substitute parts indicate?

A: GXT™ is a proprietary gold plating specification from Amphenol ICC. It represents an enhanced gold contact finish formulation. The substitute parts specify either Flash or 30.0µin thickness with this finish, compared to the main part's 20.0µin standard gold finish.

Q: Can packaging format differences affect connector performance?

A: No. Packaging format (Bag, Tray, or Bulk) affects only component handling, storage, and assembly process compatibility. It does not impact electrical performance, mechanical fit, or reliability of the connector itself.

Q: Are all three parts RoHS compliant?

A: Yes. L77DFEF09S, DEP09S064TLF, and DEP09S065TLF are all RoHS Compliant. The substitute parts also maintain REACH Unaffected status.