L777SDD50POL2

Part Overview

The L777SDD50POL2 is a 50 Position D-Sub Plug connector manufactured by Amphenol ICC (Commercial Products) with male pins, designed for through-hole solder termination applications. The connector features a DD/D shell size (Size 5) with three rows of contacts, gold-plated brass contacts, and steel tin-plated housing. This component is Active in product status and RoHS compliant. Finding equivalent and substitute parts becomes necessary when the primary part has limited availability, specific supply chain constraints, or application-specific requirements for alternative electrical or mechanical characteristics.

Substiute Parts

L777SDD50POL2

Amphenol ICC (Commercial Products)In Stock: 1090L777SDD50POL2 Datasheet

Current PartRFQ

208010-2

TE Connectivity AMP ConnectorsIn Stock: 1181208010-2 Datasheet

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5208010-2

TE Connectivity AMP ConnectorsIn Stock: 13395208010-2 Datasheet

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D50P24A6RX09LF

Amphenol ICC (FCI)In Stock: 986D50P24A6RX09LF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of D-Sub connectors is determined by strict compatibility of electrical and mechanical parameters. The following criteria establish whether a substitute part is functionally equivalent:

Critical Parameters for Substitution:

• Connector Style: D-Sub (all candidates match)
• Connector Type: Plug, Male Pins (all candidates match)
• Number of Positions: 50 (all candidates match)
• Number of Rows: 3 (all candidates match)
• Shell Size, Connector Layout: 5 (DD, D) (all candidates match)
• Mounting Type: Through Hole (all candidates match)
• Termination: Solder (all candidates match)

Variable Parameters Affecting Selection:

• Current Rating: Determines maximum allowable current per contact
• Voltage Rating: Establishes maximum operating voltage
• Operating Temperature Range: Defines thermal application limits
• RoHS Status: Compliance requirements for regulated markets
• Contact Finish Thickness: Affects durability and contact resistance
• Shell Material and Finish: Influences mechanical robustness

Three substitute parts meet the core structural and electrical requirements: TE Connectivity 208010-2, TE Connectivity 5208010-2, and Amphenol ICC D50P24A6RX09LF. Each maintains the 50-position, 3-row D-Sub plug configuration with male pins and through-hole solder termination but exhibits differences in current rating, voltage rating, temperature range, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

L777SDD50POL2 (Primary Part) Use the L777SDD50POL2 when RoHS compliance is required and the application operates at voltages up to 250V with current requirements not exceeding 3A per contact. This part is RoHS compliant and rated for the full operating temperature range of -55°C to 125°C. The tin-plated steel shell and 15.0µin gold contact finish provide standard environmental protection.

5208010-2 (TE Connectivity AMPLIMITE HD-20) Select the 5208010-2 as a direct substitute when availability of the L777SDD50POL2 is constrained and RoHS compliance is required. This part is RoHS compliant and unaffected by REACH regulations. The higher current rating of 6A per contact accommodates applications with greater current demands. The reduced operating temperature range (-55°C to 105°C) excludes high-temperature applications above 105°C. The lower voltage rating of 125V restricts use in high-voltage applications compared to the primary part.

208010-2 (TE Connectivity AMPLIMITE HD-20) The 208010-2 is functionally similar to the 5208010-2 but carries RoHS non-compliant status and REACH-affected designation. Use only in applications where RoHS compliance is not mandated. This part is not suitable for regulated markets or industries requiring RoHS compliance.

D50P24A6RX09LF (Amphenol ICC Delta D) Select the D50P24A6RX09LF when applications require the highest voltage rating (300V) or superior contact durability with thicker gold plating (30.0µin). This part supports the full operating temperature range (-55°C to 125°C) and exceeds the current capability of the primary part at 5A per contact. The threaded flange (4-40) provides enhanced mechanical retention compared to the unthreaded housing of the L777SDD50POL2. Solder Paste termination and Liquid Crystal Polymer dielectric offer alternative assembly and environmental characteristics.

Frequently Asked Questions (FAQ)

Q: Can the 208010-2 replace the L777SDD50POL2 directly? The 208010-2 shares the same mechanical form factor (50 positions, 3 rows, DD shell size) and electrical structure (D-Sub plug, male pins, through-hole solder). However, the 208010-2 is RoHS non-compliant, making it unsuitable for applications subject to RoHS regulations. Additionally, the voltage rating is reduced to 125V compared to the L777SDD50POL2's 250V, and the operating temperature range is limited to -55°C to 105°C. Use only in unregulated markets or applications with voltage requirements below 125V.

Q: What is the difference between the two TE Connectivity parts (208010-2 and 5208010-2)? Both parts are from the AMPLIMITE HD-20 series with identical electrical and mechanical specifications. The primary distinction is compliance status: 5208010-2 is RoHS compliant and REACH unaffected, while 208010-2 is RoHS non-compliant and REACH affected. The 5208010-2 is the compliant variant and appropriate for regulated applications.

Q: Which substitute offers the best voltage margin? The D50P24A6RX09LF provides the highest voltage rating at 300V, compared to the L777SDD50POL2's 250V and the TE Connectivity parts' 125V. Select the D50P24A6RX09LF when high-voltage applications require maximum voltage margin.

Q: Are there differences in packaging between these parts? The L777SDD50POL2 and D50P24A6RX09LF ship in Tray packaging, while the TE Connectivity parts (208010-2 and 5208010-2) use Tube packaging. Packaging does not affect electrical or mechanical compatibility but may influence procurement and handling logistics.

Q: Can the D50P24A6RX09LF be used at temperatures above 105°C? The D50P24A6RX09LF maintains the same operating temperature range as the L777SDD50POL2 (-55°C to 125°C), unlike the TE Connectivity parts which are limited to -55°C to 105°C. The D50P24A6RX09LF is suitable for high-temperature applications up to 125°C.

Q: What does "Solder Paste" termination mean compared to standard "Solder" termination? Solder Paste termination on the D50P24A6RX09LF indicates the connector is designed for reflow soldering processes using solder paste, enabling automated assembly. Standard Solder termination on the L777SDD50POL2 and TE Connectivity parts accommodates wave soldering or hand soldering methods. Both approaches provide reliable electrical connection; selection depends on manufacturing process compatibility.

Q: Which part has the thickest gold plating? The D50P24A6RX09LF features 30.0µin (0.76µm) gold contact finish, the thickest among all options. The L777SDD50POL2 has 15.0µin (0.38µm), while the TE Connectivity parts specify Flash thickness. Thicker plating provides enhanced contact durability and corrosion resistance in harsh environments.