Amphenol ICC L77SDDH50SOL2RM8G D-Sub 50 Position Receptacle Connector - Equivalent & Substitute Parts

Part Overview

The Amphenol ICC L77SDDH50SOL2RM8G is a 50 position D-Sub receptacle connector with female sockets, configured with 3 rows in shell size 5 (DD, D). This connector features solder termination, board-side flange mounting (4-40 screwlock), and is designed for signal applications with a current rating of 3A at 250V. The part maintains Active product status with 1123 units currently in stock.

Identifying substitute components becomes necessary when the primary part reaches end-of-life, experiences supply constraints, or when design requirements necessitate alternative mounting configurations or enhanced electrical specifications. The substitute parts listed below provide functional equivalence while accommodating specific application variations.

Substiute Parts

L77SDDH50SOL2RM8G

Amphenol ICC (Commercial Products)In Stock: 1212L77SDDH50SOL2RM8G Datasheet

Current PartRFQ

172-050-283L001

NorComp Inc.In Stock: 1329172-050-283L001 Datasheet

SimilarRFQ

172-050-283L011

NorComp Inc.In Stock: 1240172-050-283L011 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the L77SDDH50SOL2RM8G is based on the following critical parameters:

Mandatory Match Criteria:

• Connector type: D-Sub Receptacle, Female Sockets
• Number of positions: 50
• Number of rows: 3
• Shell size: 5 (DD, D)
• Termination method: Solder
• Connector style: D-Sub

Acceptable Variation Parameters:

• Mounting type: Board-side or panel mount through-hole configurations
• Flange feature: Board side (4-40) or housing/shell variants
• Current rating: Equal to or greater than 3A
• Voltage rating: Equal to or greater than 250V (or no specified rating)
• Operating temperature range: Must encompass or match the -55°C to 125°C range
• Shell material finish: Steel with tin or nickel plating
• Contact finish: Gold (flash thickness)
• Dielectric material: Thermoplastic glass-filled or PBT
• Contact material: Phosphor bronze or brass
• Flammability: UL94 V-0
• Compliance: RoHS and REACH compliance acceptable

The two NorComp Inc. parts (172-050-283L001 and 172-050-283L011) meet these criteria as 50-position, 3-row D-Sub receptacles with solder termination and superior electrical ratings (5A current capacity).

Parameter Comparison

Engineering Selection Recommendations

172-050-283L011 (NorComp Inc.) is the primary substitute for the L77SDDH50SOL2RM8G. Both connectors share identical mounting configurations with board-side (4-40) flange features, maintaining mechanical compatibility. The NorComp part delivers superior current capacity (5A versus 3A) and maintains all required certifications including ROHS3 compliance and UL94 V-0 flammability rating. The operating temperature range differs minimally (-50°C to 125°C versus -55°C to 125°C), remaining adequate for standard industrial applications.

172-050-283L001 (NorComp Inc.) serves as a secondary substitute when panel-mount applications with unthreaded housing flanges are acceptable. This variant provides identical electrical and thermal performance to 172-050-283L011 while accommodating alternative flange geometries. Both NorComp parts maintain Active product status with comparable inventory availability.

All three connectors maintain solder termination, D-Sub shell size 5 configuration, and 50-position, 3-row layouts, ensuring mechanical and electrical interchangeability within the specified parameter boundaries.

Frequently Asked Questions (FAQ)

Q: Can 172-050-283L011 directly replace L77SDDH50SOL2RM8G in existing designs?

A: Yes. Both connectors feature identical D-Sub 50-position, 3-row configurations with board-side (4-40) flanges and solder termination. Mechanical footprints are equivalent. The NorComp part provides enhanced current capacity (5A) and maintains all required compliance standards.

Q: What is the functional difference between 172-050-283L001 and 172-050-283L011?

A: The flange feature differs: 172-050-283L001 uses an unthreaded housing/shell flange, while 172-050-283L011 features a board-side (4-40) threaded flange. Electrical specifications, current ratings, and temperature ranges are identical between both parts. Flange selection depends on mechanical attachment requirements within your assembly design.

Q: Are the substitute parts compatible with existing cables and connectors?

A: Yes. All three parts are 50-position D-Sub receptacles with female sockets in shell size 5 (DD, D). Cable assemblies and mating plugs designed for the L77SDDH50SOL2RM8G function with both NorComp substitute parts without modification.

Q: What is the significance of contact material differences (Phosphor Bronze versus Brass)?

A: Both materials provide adequate electrical conductivity and durability for signal-level applications at the specified current ratings. The selection between phosphor bronze (Amphenol) and brass (NorComp) does not affect functional compatibility; material choice reflects manufacturing and reliability methodology differences between manufacturers.

Q: Do the substitute parts meet the same regulatory requirements?

A: The Amphenol part carries RoHS Compliant status. NorComp parts carry ROHS3 Compliant certification, representing a more recent compliance standard. Both satisfy modern electronic equipment regulatory requirements. All three parts maintain UL94 V-0 flammability ratings and equivalent electrical safety parameters.

Q: How do operating temperature ranges compare?

A: The Amphenol L77SDDH50SOL2RM8G operates from -55°C to 125°C. NorComp substitutes operate from -50°C to 125°C. This 5°C difference in minimum temperature does not impact compatibility for standard industrial applications operating within typical environmental ranges.

Q: What packaging format is available for all parts?

A: All three connectors are supplied in Tray packaging, suitable for both manual assembly and automated pick-and-place operations. Current inventory levels are sufficient for immediate component procurement.