L77DFDH50SOL2RM5 50 Position D-Sub Receptacle Connector

Part Overview

The L77DFDH50SOL2RM5 is a 50 Position D-Sub Receptacle connector manufactured by Amphenol ICC (Commercial Products). This is an active product featuring female sockets with panel mount, through hole solder termination, specifically designed for signal applications. Alternative models are necessary when specific mounting configurations, compliance requirements, or performance characteristics differ from the original specification.

Substiute Parts

L77DFDH50SOL2RM5

Amphenol ICC (Commercial Products)In Stock: 1017L77DFDH50SOL2RM5 Datasheet

Current PartRFQ

5745080-4

TE Connectivity AMP ConnectorsIn Stock: 15255745080-4 Datasheet

SimilarRFQ

5745080-6

TE Connectivity AMP ConnectorsIn Stock: 12025745080-6 Datasheet

SimilarRFQ

DDM50S332N

Amphenol ICC (FCI)In Stock: 871DDM50S332N Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the L77DFDH50SOL2RM5 is determined by the following mandatory parameters:

Core Electrical and Mechanical Requirements:

• Connector Type: Receptacle, Female Sockets
• Number of Positions: 50
• Number of Rows: 3
• Shell Size, Connector Layout: 5 (DD, D)
• Termination: Solder
• Contact Type: Signal

Critical Performance Parameters:

• Voltage Rating: Substitute must meet or exceed 300V
• Current Rating: Substitute must meet or exceed 7.5A
• Operating Temperature Range: Substitute must support -55°C ~ 125°C minimum
• Material Flammability Rating: UL94 V-0

Compliance Considerations:

• RoHS Status affects application eligibility
• Contact Finish specifications (gold plating thickness) impact signal integrity
• Shell Material and Finish affect environmental durability

Variable Parameters Allowing Substitution:

• Mounting Type (Panel Mount vs. Through Hole variations)
• Flange Feature (Board Side vs. Mating Side configurations)
• Packaging (Tray, Tube, Bulk)
• Contact Material (Copper Alloy vs. Phosphor Bronze)
• Dielectric Material composition

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute (Full Electrical Compatibility): DDM50S332N is the recommended substitute when voltage and current ratings of the L77DFDH50SOL2RM5 must be preserved. Both connectors support 300V and 7.5A specifications with identical operating temperature ranges (-55°C ~ 125°C). Both carry UL94 V-0 flammability certification. The primary trade-off is RoHS compliance status: L77DFDH50SOL2RM5 is RoHS Compliant while DDM50S332N is RoHS non-compliant. This distinction is application-critical for regulated industries.

Secondary Substitutes (Voltage/Current Derating Required): 5745080-4 and 5745080-6 (TE Connectivity AMPLIMITE HD-20 series) are interchangeable with each other and provide structural and mechanical compatibility. Both meet the 50-position, 3-row, Shell Size 5 (DD, D) configuration. Critical limitations: voltage rating of 125V versus 300V specification, current rating of 6A versus 7.5A specification, and maximum operating temperature of 105°C versus 125°C specification. These parts are suitable only when application requirements do not exceed these lower electrical ratings. Both are ROHS3 Compliant and REACH Affected, providing regulatory advantages in EU applications.

Mounting Configuration Consideration: L77DFDH50SOL2RM5 specifies Panel Mount with Through Hole termination. Substitute parts 5745080-4, 5745080-6, and DDM50S332N specify Through Hole only without panel mount designation, indicating different mechanical mounting interfaces. Board-level integration may require mechanical redesign.

Frequently Asked Questions (FAQ)

Q: Can 5745080-4 or 5745080-6 directly replace L77DFDH50SOL2RM5?

A: Mechanical and connector interface compatibility exists, but electrical derating is mandatory. The 125V voltage rating and 6A current rating of TE Connectivity parts are below the 300V and 7.5A specifications of the original. Direct substitution is valid only if application requirements do not exceed these lower electrical limits. Operating temperature maximum of 105°C versus 125°C must also be verified against system requirements.

Q: What is the difference between 5745080-4 and 5745080-6?

A: Both parts are from the TE Connectivity AMPLIMITE HD-20 series with identical electrical, mechanical, and material specifications. The numeric suffix (-4 versus -6) indicates different flange configurations. Verify specific mounting interface requirements against application PCB layout specifications before selection.

Q: Is DDM50S332N suitable as a direct replacement from a compliance perspective?

A: DDM50S332N maintains electrical compatibility (300V, 7.5A, -55°C ~ 125°C) and UL94 V-0 certification. However, DDM50S332N is RoHS non-compliant while L77DFDH50SOL2RM5 is RoHS Compliant. Applications subject to RoHS regulations cannot use DDM50S332N. Applications without RoHS requirements can use DDM50S332N as an electrical equivalent.

Q: How does contact finish thickness affect substitution decisions?

A: Contact finish thickness values are provided: L77DFDH50SOL2RM5 (20.0µin), TE Connectivity parts (30.0µin), and DDM50S332N (50.0µin). All three are gold plated with sufficient thickness for signal integrity in typical D-Sub applications. Higher thickness provides greater wear resistance and extended contact life under repeated mating cycles.

Q: What mounting differences exist between the substitute options?

A: L77DFDH50SOL2RM5 specifies Panel Mount with Through Hole termination. All substitute parts (5745080-4, 5745080-6, DDM50S332N) specify Through Hole only. Mounting interface differences may require mechanical redesign at the connector installation point. Flange features vary: Board Side (4-40) for the original, Mating Side Female Screwlock (4-40) for TE parts, and Housing/Shell Unthreaded for the DDM50S332N.

Q: Are there packaging considerations for production?

A: Original part is supplied in Tray packaging (996 units in stock), TE Connectivity parts in Tube packaging (1425 and 1166 units respectively), and DDM50S332N in Bulk packaging (827 units). Packaging format affects handling, storage, and assembly process compatibility. Verify compatibility with automated assembly equipment specifications.