L77DFE09SAJ4VF2 D-Sub Receptacle Equivalent & Substitute Parts

Part Overview

The L77DFE09SAJ4VF2 is a 9-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This female sockets connector features right-angle solder termination and panel mount through-hole installation. The part is actively produced and maintains 685 units in current inventory stock.

Substitute parts become necessary when the primary part number experiences extended lead times, inventory constraints, or when design requirements permit alternative configurations within the same connector category. The substitute parts listed below maintain functional compatibility through equivalent electrical and mechanical parameters.

Substiute Parts

L77DFE09SAJ4VF2

Amphenol ICC (Commercial Products)In Stock: 793L77DFE09SAJ4VF2 Datasheet

Current PartRFQ

DE09S564TLF

Amphenol ICC (FCI)In Stock: 1187DE09S564TLF Datasheet

SimilarRFQ

DE09S565MTLF

Amphenol ICC (FCI)In Stock: 865DE09S565MTLF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for D-Sub receptacle connectors is determined by the following critical parameters:

Mandatory Matching Parameters:

• Connector type (Receptacle, Female Sockets)
• Number of positions (9)
• Shell size designation (1 / DE, E)
• Mounting configuration (Right Angle, Through Hole)
• Termination method (Solder)
• Voltage rating (300V minimum)
• Shell material composition (Steel, Tin Plated)
• RoHS compliance status

Allowable Variation Parameters:

• Current rating per contact (substitute parts rated at 5A per contact remain within acceptable operating envelope)
• Contact finish thickness specifications (Flash or 30.0µin acceptable)
• Backset spacing tolerances (0.319" to 0.409" range)
• Operating temperature upper limit (125°C to 155°C range)
• Flange feature configuration (Mating Side Screwlock vs. Housing/Shell Unthreaded)
• Dielectric material composition (Thermoplastic vs. Thermoplastic Glass Filled)
• Contact material (Copper Alloy vs. Phosphor Bronze)

The substitute parts DE09S564TLF and DE09S565MTLF satisfy all mandatory matching parameters and operate within allowable variation ranges for this connector category.

Parameter Comparison

Engineering Selection Recommendations

L77DFE09SAJ4VF2 Primary Selection: Select the L77DFE09SAJ4VF2 when applications require the maximum current rating of 7.5A and extended operating temperature range to 155°C. This part maintains active production status with established supply availability. The mating side female screwlock flange feature provides integrated strain relief at the connector interface.

DE09S564TLF Substitute Selection: The DE09S564TLF serves as a functional substitute when current requirements do not exceed 5A per contact and operating temperatures remain within the -55°C to 125°C range. This part offers the highest current inventory level (1142 units) and maintains equivalent electrical and mechanical specifications. The housing/shell unthreaded flange configuration differs from the primary part but remains compatible with standard D-Sub mating interfaces.

DE09S565MTLF Substitute Selection: The DE09S565MTLF provides an alternative when mounting bracket integration is required and current demands remain at 5A per contact maximum. This part includes mounting bracket features matching the primary part configuration. The phosphor bronze contact material and glass-filled dielectric composition provide enhanced mechanical durability. Operating temperature limitation to 125°C applies to this variant.

All three parts maintain RoHS compliance, UL94 V-0 flammability rating, and unlimited moisture sensitivity classification. Selection between substitutes depends on specific application current requirements, temperature operating envelope, and mechanical mounting constraints.

Frequently Asked Questions (FAQ)

Q: Can DE09S564TLF and DE09S565MTLF be used interchangeably with L77DFE09SAJ4VF2?

A: Both substitute parts are mechanically and electrically compatible for applications operating at 5A per contact or below and within the -55°C to 125°C temperature range. The L77DFE09SAJ4VF2 supports higher current (7.5A) and extended temperature operation to 155°C. Substitution is valid only when application requirements fall within the substitute part specifications.

Q: What is the difference between the flange features on these parts?

A: The L77DFE09SAJ4VF2 features a mating side female screwlock (4-40) flange, providing threaded engagement at the connector interface. The DE09S564TLF and DE09S565MTLF feature housing/shell unthreaded flanges. Both configurations mate with standard D-Sub plugs; the difference affects mounting interface design only.

Q: Do the substitute parts include mounting brackets?

A: The L77DFE09SAJ4VF2 and DE09S565MTLF both include mounting brackets. The DE09S564TLF does not list mounting bracket features. Verify mechanical mounting requirements before selecting DE09S564TLF for applications requiring integrated bracket support.

Q: What is the significance of the backset spacing variation?

A: Backset spacing (0.319" for L77DFE09SAJ4VF2, 0.409" for DE09S564TLF, and 0.370" for DE09S565MTLF) defines the distance from the connector rear to the contact termination plane. These variations remain within acceptable tolerance for standard D-Sub receptacle applications and do not affect mating compatibility.

Q: Are there temperature limitations when substituting parts?

A: Yes. The L77DFE09SAJ4VF2 operates to 155°C; both substitute parts operate to 125°C maximum. Applications requiring operation above 125°C must use the L77DFE09SAJ4VF2. Applications limited to 125°C or below can use any of the three parts.

Q: What contact material differences exist between these parts?

A: The L77DFE09SAJ4VF2 and DE09S564TLF use copper alloy contacts. The DE09S565MTLF uses phosphor bronze contacts. Both materials provide equivalent electrical performance and gold plating. Phosphor bronze offers enhanced mechanical durability in high-cycle mating applications.

Q: How do the current ratings compare?

A: The L77DFE09SAJ4VF2 is rated at 7.5A total connector current. The DE09S564TLF and DE09S565MTLF are each rated at 5A per contact. For 9-position connectors, the substitute parts support equivalent total current capacity. Selection depends on individual contact current distribution in the application circuit.

Q: Are all three parts RoHS compliant?

A: Yes. All three parts maintain RoHS compliance status and carry identical ECCN (EAR99) and HTSUS (8536.69.4040) classifications. Regulatory compliance is equivalent across all options.

Q: What packaging differences affect inventory and procurement?

A: The L77DFE09SAJ4VF2 is supplied in standard packaging (685 units available). The DE09S564TLF is supplied in bulk packaging (1142 units available). The DE09S565MTLF is supplied in tray packaging (768 units available). Packaging format does not affect connector performance; selection depends on procurement volume and handling requirements.