L77SDDG50SOL2G

Part Overview

The L77SDDG50SOL2G is a 50-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This female socket connector features vertical through-hole mounting with solder termination, designed for applications requiring robust interconnection in industrial and commercial environments. The connector is currently in active production status. Finding substitute parts may be necessary when managing supply chain continuity, accommodating design variations across manufacturing batches, or addressing specific application requirements such as different flange configurations or enhanced current ratings.

Substiute Parts

L77SDDG50SOL2G

Amphenol ICC (Commercial Products)In Stock: 805L77SDDG50SOL2G Datasheet

Current PartRFQ

5745080-4

TE Connectivity AMP ConnectorsIn Stock: 15255745080-4 Datasheet

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5745080-6

TE Connectivity AMP ConnectorsIn Stock: 12025745080-6 Datasheet

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D50S24A4GV00LF

Amphenol ICC (FCI)In Stock: 1241D50S24A4GV00LF Datasheet

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D50S24A4GX00LF

Amphenol ICC (FCI)In Stock: 1255D50S24A4GX00LF Datasheet

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D50S24A4PA00LF

Amphenol ICC (FCI)In Stock: 952D50S24A4PA00LF Datasheet

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DD50S364TLF

Amphenol ICC (FCI)In Stock: 1057DD50S364TLF Datasheet

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DDM50S300

Amphenol ICC (FCI)In Stock: 1069DDM50S300 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the L77SDDG50SOL2G are qualified based on the following electrical and mechanical parameters:

Core Substitution Criteria:

• Connector Type: Receptacle, Female Sockets (fixed)
• Number of Positions: 50 (fixed)
• Number of Rows: 3 (fixed)
• Shell Size, Connector Layout: 5 (DD, D) (fixed)
• Mounting Type: Through Hole (fixed)
• Termination: Solder (fixed)
• Connector Style: D-Sub (fixed)

Variable Parameters (Allow Substitution Variations):

• Flange Feature: Board Side (M3) in main part; Mating Side variations and Housing/Shell options in substitutes
• Shell Material and Finish: Steel variations with different plating options (Tin Plated, Tin-Nickel Plated, Yellow Cadmium Plated)
• Current Rating: 3A (main part); 5A, 6A, or 7.5A per contact (substitutes) — higher ratings are compatible
• Voltage Rating: 250V (main part); 125V, 300V (substitutes) — selection depends on application requirements
• Operating Temperature: -55°C to 125°C (main part); -55°C to 105°C (one TE substitute) — main part and most substitutes support full range
• Contact Finish Thickness: Flash (main part); 30.0µin/0.76µm (TE substitutes)
• Dielectric Material: Thermoplastic, Glass Filled (main part); variations include Polyester, Polybutylene Terephthalate (PBT), Thermoplastic

Substitutes within the same connector family (D-Sub, 50-position, 3-row, Size 5) are compatible provided they maintain the electrical ratings required by the application.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute Candidates (Recommended):

The D50S24A4GV00LF, D50S24A4GX00LF, and D50S24A4PA00LF (all Amphenol ICC Delta D series) are the primary recommended substitutes. These parts maintain full RoHS compliance and match the L77SDDG50SOL2G in operating temperature range (-55°C to 125°C). They provide higher current ratings (5A per contact versus 3A) and higher voltage ratings (300V versus 250V), making them suitable for equivalent or higher-performance applications. The primary differentiation among these three is flange configuration: D50S24A4GV00LF features mating-side female screwlock, D50S24A4GX00LF features housing/shell threaded mounting, and D50S24A4PA00LF features unthreaded housing/shell mounting.

Secondary Substitute Option (Limited Scope):

The DD50S364TLF (Amphenol ICC D series) provides equivalent electrical performance (5A, 300V) and maintains RoHS compliance and full operating temperature range. However, material flammability rating is not specified. Use this part only when flange configuration matches application requirements.

Specialized High-Current Application (Conditional Use):

The DDM50S300 offers the highest current rating (7.5A per contact) and 300V voltage rating, suitable for high-power applications. However, this part is RoHS non-compliant due to yellow cadmium plating. Select this part only for applications where RoHS compliance is not a regulatory requirement.

Not Recommended for Direct Substitution:

The TE Connectivity AMPLIMITE HD-20 series (5745080-4 and 5745080-6) operate at lower voltage rating (125V versus 250V main part specification) and reduced maximum operating temperature (105°C versus 125°C). These parts are suitable only for applications with reduced thermal or voltage requirements.

Frequently Asked Questions (FAQ)

Q: Can I substitute the L77SDDG50SOL2G with the D50S24A4GV00LF?

A: Yes. Both connectors are 50-position D-Sub receptacles with identical mechanical form factors and mounting configurations. The D50S24A4GV00LF provides higher current rating (5A versus 3A) and voltage rating (300V versus 250V), making it electrically compatible for the same or higher-performance applications. Both maintain RoHS compliance and identical operating temperature range.

Q: What is the primary difference between D50S24A4GV00LF, D50S24A4GX00LF, and D50S24A4PA00LF?

A: These three parts differ solely in flange feature configuration. D50S24A4GV00LF has mating-side female screwlock (4-40), D50S24A4GX00LF has housing/shell threaded mounting (4-40), and D50S24A4PA00LF has unthreaded housing/shell mounting. Select based on your PCB or chassis mounting interface requirements. All three are electrically and thermally identical.

Q: Is the DDM50S300 suitable for high-reliability applications?

A: The DDM50S300 is not suitable for applications requiring RoHS compliance due to yellow cadmium plating. Use this part only in applications where RoHS compliance is not mandated. It is the only substitute offering 7.5A per contact current rating.

Q: Why do the TE Connectivity parts have lower voltage and temperature ratings?

A: The TE Connectivity AMPLIMITE HD-20 series (5745080-4 and 5745080-6) are designed for different application profiles with 125V voltage rating and -55°C to 105°C operating range. These parts are suitable only for applications where voltage and thermal requirements do not exceed these limits. They are not general-purpose replacements for the L77SDDG50SOL2G.

Q: Are all substitute parts through-hole solder termination?

A: Yes. All listed substitutes use through-hole solder termination matching the L77SDDG50SOL2G, ensuring compatibility with standard PCB assembly processes.

Q: Which substitute offers the best cost-performance balance?

A: The D50S24A4PA00LF provides a balanced option with higher electrical ratings (5A, 300V), RoHS compliance, full operating temperature range, and unthreaded housing/shell flange suitable for panel mounting. Select based on your specific mechanical interface requirements among the three Delta D variants.