L77DFD50S1APN Equivalent & Substitute Parts

Part Overview

The L77DFD50S1APN is a 50 Position D-Sub Receptacle connector manufactured by Amphenol ICC (Commercial Products). This connector features female sockets, right-angle mounting, and solder termination. The part is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing applications and new designs. Substitute parts maintain functional compatibility through matching connector style, position count, mounting configuration, and electrical ratings.

Substiute Parts

L77DFD50S1APN

Amphenol ICC (Commercial Products)In Stock: 1076L77DFD50S1APN Datasheet

Current PartRFQ

09670504763

HARTINGIn Stock: 87609670504763 Datasheet

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09670504764

HARTINGIn Stock: 81309670504764 Datasheet

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DD50S564MTLF

Amphenol ICC (FCI)In Stock: 1107DD50S564MTLF Datasheet

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DD50S564T

Amphenol ICC (FCI)In Stock: 869DD50S564T Datasheet

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DD50S564TLF

Amphenol ICC (FCI)In Stock: 35459DD50S564TLF Datasheet

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DD50S565MT

Amphenol ICC (FCI)In Stock: 974DD50S565MT Datasheet

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DD50S565MTLF

Amphenol ICC (FCI)In Stock: 1128DD50S565MTLF Datasheet

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DD50S864

Amphenol ICC (FCI)In Stock: 944DD50S864 Datasheet

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DDO50S565MTLF

Amphenol ICC (FCI)In Stock: 652DDO50S565MTLF Datasheet

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DDV50S565MTLF

Amphenol ICC (FCI)In Stock: 1162DDV50S565MTLF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Primary Matching Criteria:

• Connector Style: D-Sub
• Connector Type: Receptacle, Female Sockets
• Number of Positions: 50
• Number of Rows: 3
• Shell Size, Connector Layout: 5 (DD, D)
• Termination: Solder
• Operating Temperature Range: -55°C ~ 125°C
• Material Flammability Rating: UL94 V-0

Secondary Compatibility Factors:

• Mounting Type: Through Hole, Right Angle (primary requirement)
• Shell Material: Steel with plating
• Contact Finish: Gold or Gold GXT™
• Voltage Rating: 300V
• Current Rating: 5A to 7.5A per contact
• RoHS Compliance Status

Substitute parts are grouped into two categories based on product status and availability:

Category 1 - Active Status Substitutes: DD50S564MTLF, DD50S564TLF, DD50S565MTLF, DDO50S565MTLF, DDV50S565MTLF

Category 2 - Active Status Alternatives (HARTING): 09670504763, 09670504764

All listed substitutes maintain the core D-Sub 50-position receptacle configuration with solder termination and operate within the specified temperature range.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Amphenol ICC FCI Series D):

DD50S565MTLF and DDV50S565MTLF are the preferred active-status substitutes for the L77DFD50S1APN. Both maintain full electrical and mechanical compatibility with matching 50-position D-Sub receptacle configuration, solder termination, and operating temperature range. DD50S565MTLF provides 5A per contact current rating with 30.0µin gold contact finish thickness. DDV50S565MTLF matches the original 7.5A current rating and includes female screwlock mating side feature. Both parts carry RoHS Compliant certification and MSL 1 rating.

DD50S564MTLF and DD50S564TLF are functionally equivalent alternatives with active product status. These parts maintain the core 50-position D-Sub receptacle specification with solder termination and -55°C to 125°C operating range.

DDO50S565MTLF provides an alternative with 4-40 threaded shell flange feature and 5A current rating, suitable for applications requiring mechanical fastening.

Secondary Substitutes (HARTING):

09670504763 and 09670504764 are HARTING-manufactured alternatives with active product status. Both maintain 50-position D-Sub receptacle configuration with through-hole right-angle mounting and solder termination. These parts carry ROHS3 Compliant certification and operate within the -55°C to 125°C temperature range. Backset spacing is 0.409" (10.40mm), compared to 0.406" (10.30mm) on the original part. Contact finish specifications are not provided for these alternatives.

Compliance Considerations:

All substitute parts maintain UL94 V-0 material flammability rating and MSL 1 (Unlimited) moisture sensitivity level. RoHS compliance is confirmed across all Amphenol ICC alternatives (RoHS Compliant) and HARTING alternatives (ROHS3 Compliant). REACH status varies: DD50S564TLF shows REACH Affected; DD50S565MTLF shows REACH Unaffected; HARTING parts show REACH Unaffected.

Frequently Asked Questions (FAQ)

Q: Can DD50S565MTLF directly replace L77DFD50S1APN?

A: DD50S565MTLF is functionally compatible as a substitute. Both are 50-position D-Sub receptacles with female sockets, right-angle solder termination, and -55°C to 125°C operating range. DD50S565MTLF has active product status compared to the obsolete L77DFD50S1APN. Current rating differs: L77DFD50S1APN is rated 7.5A while DD50S565MTLF is rated 5A per contact. Contact finish thickness is 30.0µin (0.76µm) on DD50S565MTLF versus 20.0µin (0.51µm) on the original.

Q: What is the difference between DD50S565MTLF and DDV50S565MTLF?

A: Both are 50-position D-Sub receptacles with solder termination and -55°C to 125°C operating range. DDV50S565MTLF matches the original 7.5A current rating, while DD50S565MTLF is rated 5A per contact. DDV50S565MTLF features female screwlock mating side (4-40), whereas DD50S565MTLF has unthreaded housing/shell flange. Both carry RoHS Compliant certification and MSL 1 rating.

Q: Are HARTING parts 09670504763 and 09670504764 interchangeable?

A: Both HARTING parts are 50-position D-Sub receptacles with through-hole right-angle solder termination and -55°C to 125°C operating range. They maintain identical core specifications. Both carry ROHS3 Compliant certification and MSL 1 rating. Contact finish specifications are not provided for either part.

Q: What is the significance of backset spacing differences?

A: L77DFD50S1APN has 0.406" (10.30mm) backset spacing. Most substitute parts (09670504763, 09670504764, DD50S564MTLF, DD50S564TLF, DDO50S565MTLF) have 0.409" (10.40mm) backset spacing. DD50S565MTLF has 0.370" (9.40mm) backset spacing. Backset spacing affects panel mounting depth and PCB layout compatibility. Verify mechanical fit in target application.

Q: How do current ratings affect substitution?

A: L77DFD50S1APN is rated 7.5A. DDV50S565MTLF also provides 7.5A rating. DD50S565MTLF, DDO50S565MTLF, and 09670504763/09670504764 are rated 5A or lower. For applications requiring 7.5A per contact, DDV50S565MTLF is the appropriate substitute. For applications requiring 5A or less, all listed alternatives are suitable.

Q: What packaging options are available?

A: L77DFD50S1APN is supplied in unspecified packaging. Substitute parts are available in multiple packaging formats: Tray (DD50S564TLF, DD50S565MTLF), Bulk (09670504763, 09670504764, DDO50S565MTLF, DDV50S565MTLF), and unspecified (DD50S564MTLF, DD50S864). Packaging selection depends on procurement and assembly requirements.

Q: Are all substitutes RoHS compliant?

A: All listed substitutes carry RoHS compliance certification. Amphenol ICC alternatives are marked RoHS Compliant. HARTING alternatives (09670504763, 09670504764) are marked ROHS3 Compliant. All parts meet RoHS requirements for new designs and applications subject to RoHS regulations.

Q: What is the contact material difference between substitutes?

A: L77DFD50S1APN uses Copper Alloy contacts. DD50S565MTLF uses Phosphor Bronze contacts. Other substitutes specify Copper Alloy or do not provide contact material specifications. Contact material affects electrical conductivity and mechanical durability. Phosphor Bronze provides enhanced spring characteristics and wear resistance.