L77SDDH50SOL2G

Part Overview

The L77SDDH50SOL2G is a 50 Position D-Sub Receptacle connector manufactured by Amphenol ICC (Commercial Products). This female sockets connector features vertical through-hole solder termination and is actively produced. Alternative equivalent parts are necessary when the primary part is unavailable, when different environmental specifications are required, or when alternative mechanical features better suit specific application requirements.

Substiute Parts

L77SDDH50SOL2G

Amphenol ICC (Commercial Products)In Stock: 966L77SDDH50SOL2G Datasheet

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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

Substitution of D-Sub 50-position receptacle connectors is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility: Voltage rating (250V minimum), current rating per contact (3A minimum), contact material and finish (gold-plated phosphor bronze or equivalent copper alloy), and operating temperature range (-55°C to 125°C minimum).

Mechanical Compatibility: Connector style (D-Sub receptacle), shell size and layout (Size 5, DD, D), number of positions (50), mounting type (through-hole), termination method (solder), and flange configuration (board-side or housing-side mounting options).

Regulatory Compliance: Material flammability rating (UL94 V-0), RoHS compliance status, and moisture sensitivity level (MSL 1).

The substitute parts listed maintain compatibility across these parameters while differing in shell material finishes, specific flange features, or current rating capabilities.

Parameter Comparison

Engineering Selection Recommendations

Full Compatibility (Electrical and Mechanical): D50S24A4GV00LF, D50S24A4GX00LF, and D50S24A4PA00LF meet or exceed all electrical specifications of the L77SDDH50SOL2G with higher voltage ratings (300V versus 250V), higher current capabilities (5A per contact versus 3A), and extended operating temperature ranges to 125°C. All three maintain RoHS compliance and UL94 V-0 flammability ratings. Differences exist in flange configuration (mating-side screwlock versus housing-side unthreaded mounting), which must be verified for mechanical fit in the target application.

Amphenol ICC (FCI) Series Alternatives: DD50S364TLF and DDM50S300 offer increased current ratings (5A and 7.5A per contact, respectively) and 300V voltage rating. Both are suitable for applications requiring higher power density. DD50S364TLF maintains RoHS compliance; DDM50S300 is RoHS non-compliant due to yellow cadmium plating on the steel shell.

TE Connectivity Alternatives: 5745080-4 and 5745080-6 are mechanically and electrically compatible but operate at reduced maximum temperature (-55°C to 105°C versus -55°C to 125°C) and lower voltage rating (125V versus 250V). These parts are suitable only for applications with relaxed thermal or voltage requirements. Both maintain ROHS3 compliance.

Regulatory Consideration: For applications requiring RoHS compliance, DDM50S300 is excluded. All other listed substitutes maintain RoHS compliance or ROHS3 compliance status.

Frequently Asked Questions (FAQ)

Q: Can 5745080-4 and 5745080-6 replace L77SDDH50SOL2G in all applications? A: No. These TE Connectivity parts have a maximum operating temperature of 105°C versus the L77SDDH50SOL2G specification of 125°C, and a voltage rating of 125V versus 250V. Substitution is valid only for applications operating below 105°C and with voltage requirements below 125V.

Q: What is the difference between D50S24A4GV00LF, D50S24A4GX00LF, and D50S24A4PA00LF? A: All three parts share identical electrical specifications and are from the Amphenol ICC Delta D series. The primary differences are in flange configuration: D50S24A4GV00LF features mating-side female screwlock; D50S24A4GX00LF features housing-side 4-40 threaded mounting; D50S24A4PA00LF features housing-side unthreaded mounting. Selection depends on the mechanical mounting requirements of the application.

Q: Is DDM50S300 suitable for RoHS-compliant applications? A: No. DDM50S300 carries RoHS non-compliant status due to yellow cadmium plating. Use only in applications where RoHS compliance is not required. For RoHS-compliant substitutes with high current capability, use DD50S364TLF (5A per contact) or D50S24A4GV00LF, D50S24A4GX00LF, or D50S24A4PA00LF (5A per contact).

Q: What are the voltage and current derating considerations when selecting a substitute? A: All listed substitutes either meet or exceed the L77SDDH50SOL2G electrical specifications. Substitutes with higher voltage or current ratings may be selected without derating concerns. However, if a substitute has lower specifications (such as TE Connectivity parts with 125V rating), applications must be verified to operate within those reduced limits.

Q: Are all listed substitutes available in the same packaging formats? A: No. L77SDDH50SOL2G is packaged in standard format. TE Connectivity alternatives (5745080-4 and 5745080-6) are supplied in Tube packaging. Amphenol ICC FCI alternatives (D50S24A4GV00LF, D50S24A4GX00LF, D50S24A4PA00LF, DD50S364TLF, DDM50S300) are supplied in Tray packaging. Verify packaging compatibility with assembly process requirements before final part selection.

Q: Can substitutes with 300V ratings be used in 250V applications? A: Yes. Parts with higher voltage ratings are fully compatible with applications specified for lower voltages. No derating is required, and no design changes are necessary when substituting a 250V-rated part with a 300V-rated equivalent.