L77SDDH50SOL2RM5G

Part Overview

The L77SDDH50SOL2RM5G is a 50-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This connector features female sockets with vertical through-hole soldering termination and board-side flange mounting. The product is currently active and available with 765 pieces in stock. Alternative models may be required due to lead time constraints, specific mounting configuration requirements, or application-specific compliance needs.

Substiute Parts

L77SDDH50SOL2RM5G

Amphenol ICC (Commercial Products)In Stock: 796L77SDDH50SOL2RM5G 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

Substitute parts for the L77SDDH50SOL2RM5G must meet the following electrical and mechanical compatibility requirements:

Critical Parameters for Substitution:

• Connector type: Receptacle, female sockets
• Number of positions: 50
• Number of rows: 3
• Shell size and connector layout: 5 (DD, D)
• Termination method: Solder
• Flange feature: Board-side mounting

Acceptable Parameter Variations:

• Mounting type: Panel mount combined with through-hole acceptable
• Shell material finish: Nickel plating acceptable as alternative to tin plating
• Contact form: Machined acceptable as alternative to stamped
• Contact material: Brass acceptable as alternative to phosphor bronze
• Current rating: 5A acceptable (higher than 3A minimum)
• Operating temperature minimum: -50°C acceptable (higher than -55°C minimum)
• Dielectric material: PBT acceptable as alternative to thermoplastic glass-filled
• Flange style: Housing/shell unthreaded acceptable as alternative to 4-40 board side

The substitute parts 172-050-283L001 and 172-050-283L011 (both from NorComp Inc.) satisfy all critical parameters and fall within acceptable variations for non-critical electrical and mechanical characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both 172-050-283L001 and 172-050-283L011 are active products with ROHS3 compliance status, exceeding the RoHS compliance requirement of the primary part. The NorComp Inc. parts provide higher current ratings (5A versus 3A) and meet UL94 V-0 flammability certification identical to the Amphenol ICC connector.

172-050-283L011 is the preferred substitute when maintaining identical flange mounting configuration (board side 4-40) is critical to the PCB design layout.

172-050-283L001 is suitable for applications where panel mounting flexibility or housing-shell flange mounting is acceptable, providing additional mounting design options.

Both substitutes are suitable for temperature ranges meeting or exceeding the operational envelope with minimum temperatures of -50°C.

Frequently Asked Questions (FAQ)

Q: Can 172-050-283L001 or 172-050-283L011 be used as direct replacements for L77SDDH50SOL2RM5G?

A: Yes. Both NorComp parts are electrically and mechanically compatible. The 50-position, 3-row D-Sub receptacle connector geometry is identical. However, flange mounting must be verified against PCB design specifications. The 172-050-283L011 maintains board-side 4-40 flange mounting identical to the original part, while 172-050-283L001 features housing/shell unthreaded flange mounting.

Q: What are the key differences between the two NorComp substitutes?

A: The primary difference is flange mounting style. The 172-050-283L011 uses board-side 4-40 flange mounting matching the original L77SDDH50SOL2RM5G. The 172-050-283L001 uses housing/shell unthreaded flange mounting. Electrical ratings are identical; both provide 5A current rating.

Q: Are the substitute parts rated for the same voltage and temperature ranges?

A: The substitute parts operate across the same upper temperature limit (125°C) with a slightly higher minimum operating temperature of -50°C versus the original -55°C specification. The NorComp parts do not specify a voltage rating in available documentation; the original part is rated at 250V.

Q: What is the difference between stamped and machined contact forms?

A: Both contact forms function electrically within the D-Sub 50-position connector standard. Stamped contacts (original part) are produced through metal stamping processes. Machined contacts (substitute parts) are produced through precision machining. Both provide gold flash finish and function within the electrical requirements of this connector category.

Q: Are all parts equally suitable for high-reliability applications?

A: All three parts achieve UL94 V-0 flammability rating. The substitute parts provide ROHS3 compliance and higher current capacity (5A), supporting applications with stricter environmental and safety requirements than the original part specification.

Q: What is the inventory availability for these parts?

A: The original L77SDDH50SOL2RM5G has 765 pieces in stock. NorComp substitutes provide higher inventory levels: 172-050-283L001 with 1243 pieces and 172-050-283L011 with 1196 pieces in stock.