Equivalent & Substitute Parts: L77DFEH09S

Part Overview

The L77DFEH09S is a 9-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This panel-mount, female socket connector features solder cup termination and is designed for signal applications requiring reliable D-Sub connectivity. The part is currently active in production with 731 units in stock. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when application requirements necessitate different mounting configurations or electrical ratings.

Substiute Parts

L77DFEH09S

Amphenol ICC (Commercial Products)In Stock: 763L77DFEH09S Datasheet

Current PartRFQ

DEP09S064TLF

Amphenol ICC (FCI)In Stock: 1314DEP09S064TLF Datasheet

SimilarRFQ

DEP09S065TLF

Amphenol ICC (FCI)In Stock: 1147DEP09S065TLF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the L77DFEH09S is determined by equivalence in the following critical parameters:

Core Electrical Compatibility:

• 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
• Contact material: Copper Alloy
• Operating temperature range: -55°C ~ 125°C
• Material flammability rating: UL94 V-0
• RoHS compliance: RoHS Compliant

Allowable Variations:

• Mounting type: Panel Mount (main part) versus Free Hanging (In-Line) (substitute parts)
• Voltage rating: 300V (main part) versus 1000V (substitute parts)
• Contact finish thickness: 20.0µin (main part) versus Flash or 30.0µin (substitute parts)
• Packaging format: Bag, Tray, or Bulk

The substitute parts DEP09S064TLF and DEP09S065TLF maintain electrical and mechanical compatibility through identical position count, shell size, termination method, and operating temperature specifications. Differences in mounting configuration and voltage rating represent design flexibility rather than incompatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection: The L77DFEH09S is the specified component for applications requiring panel-mount D-Sub receptacle connectivity with 300V voltage rating. This part maintains active production status and RoHS compliance, suitable for standard industrial and commercial signal applications.

Substitute Part Selection Criteria:

DEP09S064TLF is applicable when:

• Free hanging (in-line) mounting configuration is acceptable
• Higher voltage rating of 1000V is required or beneficial
• Tray packaging format is compatible with assembly processes
• Increased inventory availability (1234 units) is advantageous

DEP09S065TLF is applicable when:

• Free hanging (in-line) mounting configuration is acceptable
• Higher voltage rating of 1000V is required or beneficial
• Bulk packaging format is compatible with assembly processes
• Increased inventory availability (1069 units) is advantageous

Both substitute parts maintain electrical compatibility through identical position count, shell size, termination method, operating temperature range, and flammability rating. The transition from panel mount to free hanging configuration represents a mechanical design change that must be evaluated within the specific application context.

Frequently Asked Questions (FAQ)

Q: Can DEP09S064TLF or DEP09S065TLF be used as direct replacements for L77DFEH09S?

A: These parts are electrically and mechanically compatible in terms of connector interface, position count, shell size, and termination method. The primary difference is mounting type: L77DFEH09S is panel mount, while DEP09S064TLF and DEP09S065TLF are free hanging (in-line). Substitution is valid only when the application design accommodates in-line mounting.

Q: What is the difference between DEP09S064TLF and DEP09S065TLF?

A: Both parts are functionally equivalent. The differences are packaging format (Tray versus Bulk) and contact finish thickness (Flash versus 30.0µin). These variations do not affect electrical performance or connector compatibility.

Q: Does the higher voltage rating of substitute parts affect compatibility?

A: No. The substitute parts are rated for 1000V compared to the main part's 300V rating. A higher voltage rating does not create incompatibility; it indicates enhanced electrical capability. The substitute parts are suitable for applications requiring either 300V or higher voltage operation.

Q: Are all parts RoHS compliant?

A: Yes. The main part L77DFEH09S and both substitute parts DEP09S064TLF and DEP09S065TLF are RoHS compliant, meeting environmental and regulatory requirements for commercial and industrial applications.

Q: What is the significance of the GXT™ contact finish on substitute parts?

A: GXT™ is a proprietary gold plating technology applied to the substitute parts. This represents an enhanced contact finish specification compared to the standard gold finish on the main part. Both finishes are compatible with solder cup termination and provide reliable electrical contact.

Q: How do packaging differences affect part selection?

A: Packaging format (Bag, Tray, or Bulk) is determined by assembly process requirements and inventory management practices. Electrical and mechanical performance is independent of packaging. Selection should align with manufacturing workflow and component handling procedures.

Q: Can the operating temperature range be exceeded?

A: No. All parts are specified for -55°C to 125°C operation. Applications requiring operation outside this range require alternative component selection.