L77DEH09S D-Sub 9 Position Receptacle Connector - Equivalent & Substitute Parts

Part Overview

The L77DEH09S is a 9 position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This connector features female sockets with solder cup termination and is designed for free hanging in-line mounting applications. The part is currently active in production with 1088 units in stock.

D-Sub connectors of this configuration are essential components in applications requiring standardized signal transmission interfaces. Equivalent and substitute parts become necessary when managing supply chain continuity, accommodating different packaging requirements, or addressing specific application constraints while maintaining electrical and mechanical compatibility.

Substiute Parts

L77DEH09S

Amphenol ICC (Commercial Products)In Stock: 1135L77DEH09S Datasheet

Current PartRFQ

DEP09S065TLF

Amphenol ICC (FCI)In Stock: 1147DEP09S065TLF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the L77DEH09S is permissible with the DEP09S065TLF based on the following alignment of critical parameters:

Electrical Compatibility:

• Both connectors maintain 9 position configuration with identical shell size (1, DE/E layout)
• Both support receptacle, female socket connector type
• Both feature solder cup termination
• Both operate across -55°C to 125°C temperature range
• Both are RoHS compliant with UL94 V-0 flammability rating
• Both utilize tin-plated steel shells with gold contact finish

Mechanical Compatibility:

• Both employ free hanging in-line mounting configuration
• Both maintain identical row structure (2 rows)
• Both are classified as D-Sub, D-shaped connectors

Allowable Variations:

• Voltage rating differential: L77DEH09S rated 300V; DEP09S065TLF rated 1000V (higher rating is acceptable for substitution)
• Current rating specification: L77DEH09S rated 7.5A; DEP09S065TLF rated 7.5A per contact (equivalent)
• Contact finish thickness: L77DEH09S 8.00µin; DEP09S065TLF 30.0µin (enhanced thickness acceptable)
• Flange feature difference: L77DEH09S features cable side (4-40); DEP09S065TLF features housing/shell unthreaded (mechanical variation within same connector class)
• Packaging: L77DEH09S supplied in bag; DEP09S065TLF supplied in bulk (does not affect functional compatibility)

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (L77DEH09S): Select the L77DEH09S when the original specification is available and supply is adequate. This part maintains active production status with 1088 units in current inventory. The connector is RoHS compliant and carries UL94 V-0 flammability certification, meeting standard industrial requirements.

Substitute Selection (DEP09S065TLF): The DEP09S065TLF serves as a direct functional substitute when L77DEH09S availability is constrained. This part is also active in production with 1069 units in inventory. The substitute maintains identical electrical and mechanical specifications across all critical parameters. The enhanced contact finish thickness (30.0µin versus 8.00µin) and higher voltage rating (1000V versus 300V) provide additional performance margin without introducing incompatibility. Both parts carry identical RoHS compliance and UL94 V-0 certification.

Compliance Considerations: Both parts are classified under ECCN EAR99 and HTSUS 8536.69.8000. Both maintain Moisture Sensitivity Level 1 (Unlimited), indicating no special handling requirements during storage or assembly. The DEP09S065TLF carries additional REACH Unaffected designation.

Frequently Asked Questions (FAQ)

Q: Can DEP09S065TLF directly replace L77DEH09S in existing designs?

A: Yes. Both connectors share identical 9-position D-Sub receptacle configuration with matching shell size (1, DE/E), solder cup termination, and free hanging in-line mounting. Electrical parameters (current, voltage, temperature range) and mechanical dimensions are compatible. The substitute operates within the same environmental and compliance specifications.

Q: What is the significance of the voltage rating difference (300V vs. 1000V)?

A: The DEP09S065TLF's higher voltage rating (1000V) is a superset of the L77DEH09S specification (300V). This means the substitute can operate safely in any application designed for the original part. The higher rating does not introduce incompatibility; it provides additional performance margin for applications with elevated voltage requirements.

Q: How does the contact finish thickness difference affect performance?

A: The DEP09S065TLF features enhanced gold plating thickness (30.0µin) compared to the L77DEH09S (8.00µin). This increased thickness improves contact durability and corrosion resistance without affecting electrical compatibility. Both finishes meet the same functional requirements for signal transmission and mating cycles.

Q: Are there packaging differences between these parts?

A: Yes. The L77DEH09S is supplied in bag packaging, while the DEP09S065TLF is supplied in bulk packaging. This difference affects inventory management and handling but does not impact the connector's electrical or mechanical function. Select based on your assembly process requirements.

Q: Do both parts meet the same compliance standards?

A: Both L77DEH09S and DEP09S065TLF are RoHS compliant and carry UL94 V-0 flammability certification. Both are classified as Moisture Sensitivity Level 1 (Unlimited). The DEP09S065TLF carries additional REACH Unaffected designation. Both are suitable for industrial applications requiring these certifications.

Q: What is the difference between the flange features (cable side vs. housing/shell)?

A: The L77DEH09S features a cable-side flange with 4-40 mounting holes, while the DEP09S065TLF features an unthreaded housing/shell flange. Both configurations support free hanging in-line mounting. The flange difference reflects design variation within the D-Sub connector family and does not prevent functional substitution when mechanical mounting requirements are compatible with the substitute design.

Q: Can I use these connectors interchangeably in the same assembly?

A: Yes, provided your assembly process accommodates the packaging format (bag versus bulk) and the flange mounting style of the selected part. Both connectors maintain identical electrical performance, solder cup termination compatibility, and environmental operating specifications. Verify that your PCB or cable assembly design accommodates the specific flange configuration of the substitute part.