L77DFE09SF179A D-Sub Receptacle Connector Equivalent & Substitute Parts

Part Overview

The L77DFE09SF179A is a 9-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This panel-mount, through-hole connector features female sockets with wire wrap termination and is designed for signal applications. The connector maintains an active product status with 1060 units in current inventory stock.

Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part specifications, enabling direct replacement in applications where the original part becomes unavailable or when inventory constraints require alternative sourcing.

Substiute Parts

L77DFE09SF179A

Amphenol ICC (Commercial Products)In Stock: 1156L77DFE09SF179A Datasheet

Current PartRFQ

DEP09S465TLF

Amphenol ICC (FCI)In Stock: 1086DEP09S465TLF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for D-Sub receptacle connectors is determined by strict alignment of the following parameters:

Critical Matching Parameters:

• Connector style (D-Sub)
• Connector type (Receptacle, Female Sockets)
• Number of positions (9)
• Number of rows (2)
• Shell size and connector layout (1 / DE, E)
• Mounting type (Panel Mount, Through Hole)
• Termination method (Wire Wrap)
• Contact type (Signal)

Allowable Variation Parameters:

• Voltage rating (substitute must meet or exceed the original specification)
• Current rating per contact (substitute must meet or exceed the original specification)
• Contact finish composition (Gold or Gold with GXT™ coating)
• Contact finish thickness (20.0µin or Flash)
• Dielectric material composition (Thermoplastic or Thermoplastic, Glass Filled)
• Color specification (when not specified in original, variation is acceptable)

The DEP09S465TLF meets all critical matching parameters and exceeds electrical performance specifications, qualifying it as a direct substitute for the L77DFE09SF179A.

Parameter Comparison

Engineering Selection Recommendations

L77DFE09SF179A Selection Criteria:

• Primary choice when original part number specification is required
• Active product status with established supply chain
• 1060 units available in current inventory
• RoHS compliant and REACH unaffected
• Suitable for applications with 300V maximum voltage requirement

DEP09S465TLF Selection Criteria:

• Direct substitute when L77DFE09SF179A availability is constrained
• Enhanced voltage rating (1000V) provides margin for applications with higher transient voltage conditions
• Active product status with 1072 units in current inventory
• RoHS compliant and REACH unaffected
• GXT™ contact finish provides enhanced durability characteristics
• Identical mechanical and electrical core specifications ensure form, fit, and function compatibility

Both parts are manufactured by Amphenol ICC divisions and maintain equivalent compliance certifications. Selection between these parts is based on inventory availability and application voltage requirements rather than functional capability differences.

Frequently Asked Questions (FAQ)

Q: Can DEP09S465TLF be used as a direct replacement for L77DFE09SF179A in existing designs?

A: Yes. Both connectors share identical mechanical dimensions, mounting interfaces, pin configurations, and core electrical specifications. The DEP09S465TLF meets or exceeds all electrical parameters of the L77DFE09SF179A, including current rating (7.5A per contact) and operating temperature range (-55°C ~ 125°C).

Q: What is the primary difference between these two connectors?

A: The DEP09S465TLF features a higher voltage rating (1000V versus 300V) and GXT™ contact finish technology. Both connectors maintain identical 9-position, 2-row D-Sub receptacle configuration with panel mount, through-hole termination.

Q: Are the wire wrap termination specifications identical?

A: Yes. Both connectors utilize wire wrap termination with equivalent contact material (Copper Alloy) and contact form specifications. The termination process and wire gauge compatibility are identical.

Q: Do both parts meet the same compliance standards?

A: Yes. Both L77DFE09SF179A and DEP09S465TLF are RoHS compliant, REACH unaffected, UL94 V-0 rated, and classified under ECCN EAR99. Both maintain Moisture Sensitivity Level 1 (Unlimited).

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

A: L77DFE09SF179A features standard gold plating at 20.0µin (0.51µm) thickness. DEP09S465TLF features gold plating with GXT™ technology at flash thickness. Both finishes provide equivalent electrical conductivity and signal integrity for signal applications.

Q: Can these connectors be intermixed in the same assembly?

A: Yes. Both connectors are mechanically and electrically compatible. They share identical shell size (1 / DE, E), pin spacing, and mounting footprint. Intermixing is acceptable from a form, fit, and function perspective.

Q: Which part should be selected for new designs?

A: Selection is based on application voltage requirements. For applications with voltage requirements up to 300V, either part is suitable. For applications with higher voltage transient conditions or future voltage margin requirements, the DEP09S465TLF (1000V rating) is appropriate.

Q: Are there any temperature or environmental differences between these connectors?

A: No. Both connectors operate across the identical temperature range (-55°C ~ 125°C) and maintain equivalent environmental performance characteristics. Both are rated UL94 V-0 for flammability.