L77DEG09S D-Sub 9-Position Receptacle Connector

Part Overview

The L77DEG09S 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 applications. The part is currently active in production with 847 units in stock.

D-Sub connectors are essential components in applications requiring standardized, compact interconnection solutions. Alternative models become necessary when specific electrical ratings, flange configurations, or packaging requirements differ from the original specification, or when inventory constraints require sourcing from equivalent product lines.

Substiute Parts

L77DEG09S

Amphenol ICC (Commercial Products)In Stock: 883L77DEG09S Datasheet

Current PartRFQ

DEP09S065TLF

Amphenol ICC (FCI)In Stock: 1147DEP09S065TLF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of D-Sub 9-position receptacle connectors is determined by the following critical parameters:

Mandatory Compatibility Parameters:

• Connector type (Receptacle, Female Sockets)
• Number of positions (9)
• Shell size and connector layout (1 / DE, E)
• Termination method (Solder Cup)
• Operating temperature range (-55°C ~ 125°C)
• Mounting type (Free Hanging, In-Line)

Allowable Variation Parameters:

• Voltage rating (substitute must meet or exceed 300V minimum)
• Current rating per contact (substitute must meet or exceed 7.5A minimum)
• Flange feature configuration (Cable Side vs. Housing/Shell)
• Contact finish composition (Gold or equivalent noble metal plating)
• Packaging format (Bag vs. Bulk)
• Manufacturer source (different divisions or OEM partners)

The substitute part DEP09S065TLF meets all mandatory compatibility parameters and exceeds electrical performance specifications, making it a valid functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

L77DEG09S Selection Criteria:

• Applications requiring cable-side M3 flange mounting
• Specifications limited to 300V maximum operating voltage
• Bagged packaging for controlled inventory management
• Commercial Products division sourcing preference

DEP09S065TLF Selection Criteria:

• Applications compatible with housing/shell unthreaded flange configuration
• Systems requiring 1000V voltage rating capability
• Bulk packaging for high-volume production runs
• FCI division sourcing or secondary source requirement
• Enhanced contact finish thickness (30.0µin) for extended contact life in high-cycle applications

Both parts maintain identical RoHS compliance, UL94 V-0 flammability rating, and unlimited moisture sensitivity level (MSL 1). Both are active products with current manufacturing status and full regulatory compliance under EAR99 export classification.

The selection between these parts depends on mechanical flange configuration requirements and packaging format needs. Electrical performance of DEP09S065TLF exceeds L77DEG09S specifications in voltage and contact finish thickness, making it suitable for applications with higher electrical demands.

Frequently Asked Questions (FAQ)

Q: Can DEP09S065TLF be used as a direct replacement for L77DEG09S in all applications?

A: DEP09S065TLF is electrically and mechanically compatible for applications where the housing/shell unthreaded flange configuration is acceptable. The primary difference is the flange type: L77DEG09S uses cable-side M3 threading, while DEP09S065TLF uses an unthreaded housing/shell flange. Verify mechanical mounting requirements before substitution.

Q: What is the difference in contact finish between these two parts?

A: Both parts use gold plating. L77DEG09S specifies 8.00µin (0.203µm) thickness, while DEP09S065TLF specifies 30.0µin (0.76µm) with GXT™ enhancement. The thicker plating on DEP09S065TLF provides increased durability in high-cycle mating applications.

Q: Are there voltage rating differences that affect circuit design?

A: L77DEG09S is rated for 300V maximum, while DEP09S065TLF is rated for 1000V. If your application operates at voltages between 300V and 1000V, DEP09S065TLF provides additional safety margin. For applications below 300V, both parts are suitable.

Q: What packaging differences exist between these parts?

A: L77DEG09S is supplied in bag packaging (847 units in stock), while DEP09S065TLF is supplied in bulk packaging (1069 units in stock). Bag packaging typically provides individual part protection, while bulk packaging is optimized for high-volume manufacturing environments.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both parts are RoHS Compliant, carry UL94 V-0 flammability rating, have MSL 1 (Unlimited) moisture sensitivity level, and are classified under EAR99 export control. DEP09S065TLF additionally carries REACH Unaffected status.

Q: What is the current rating specification for each part?

A: L77DEG09S specifies 7.5A current rating. DEP09S065TLF specifies 7.5A per contact. Both parts meet identical current handling requirements for standard D-Sub 9-position applications.

Q: Can these connectors be used interchangeably in legacy equipment?

A: Mechanical compatibility depends on the flange mounting configuration of the original equipment. If the equipment uses cable-side M3 flange mounting, L77DEG09S is the correct choice. If the equipment uses housing/shell mounting, DEP09S065TLF is appropriate. Physical inspection of the mating connector is required to confirm compatibility.