DDMS50S300 D-Sub 50 Position Receptacle Connector - Equivalent & Substitute Parts

Part Overview

The DDMS50S300 is a 50 position D-Sub receptacle connector manufactured by Amphenol ICC (FCI) in the DM HE501 series. This through-hole solder termination connector features female sockets with a 3-row configuration in shell size 5 (DD, D) layout. The connector is rated for 7.5A per contact at 300V and operates across -55°C to 125°C. As an active product with RoHS non-compliant status, equivalent alternatives may be required for applications demanding RoHS compliance, alternative flange configurations, or different packaging formats while maintaining core electrical and mechanical compatibility.

Substiute Parts

DDMS50S300

Amphenol ICC (FCI)In Stock: 1199DDMS50S300 Datasheet

Current PartRFQ

5745080-4

TE Connectivity AMP ConnectorsIn Stock: 15255745080-4 Datasheet

MFR RecommendedRFQ

5745080-6

TE Connectivity AMP ConnectorsIn Stock: 12025745080-6 Datasheet

MFR RecommendedRFQ

L77SDD50SOL2

Amphenol ICC (Commercial Products)In Stock: 997L77SDD50SOL2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DDMS50S300 is determined by strict equivalence in the following core parameters: connector type (receptacle, female sockets), number of positions (50), number of rows (3), shell size and layout (5 DD, D), mounting type (through hole), and termination method (solder). All substitute parts must maintain these mechanical and electrical characteristics to ensure direct compatibility in PCB footprint and mating interface.

The identified substitute parts—5745080-4, 5745080-6 (TE Connectivity AMPLIMITE HD-20 series), and L77SDD50SOL2 (Amphenol ICC SD series)—satisfy these core requirements. Variations in secondary parameters such as current rating, voltage rating, operating temperature range, flange feature design, shell material finish, contact finish thickness, dielectric material composition, and regulatory compliance status do not preclude substitution but must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts maintain active product status and UL94 V-0 flammability certification, ensuring continued availability and fire safety compliance.

The TE Connectivity parts (5745080-4 and 5745080-6) offer ROHS3 compliance, addressing regulatory requirements where RoHS adherence is mandatory. These parts feature mating-side female screwlock flanges (4-40) and polyester dielectric material. The current rating of 6A per contact and voltage rating of 125V are lower than the DDMS50S300; applications requiring the full 7.5A per contact at 300V cannot use these substitutes. The operating temperature range extends to 105°C maximum, which is 20°C lower than the DDMS50S300.

The Amphenol ICC L77SDD50SOL2 (SD series) provides RoHS compliance with an unthreaded housing/shell flange configuration and thermoplastic glass-filled dielectric. This part maintains the full -55°C to 125°C operating temperature range of the DDMS50S300 and a 250V voltage rating. The current rating of 3A per contact is the lowest among all options and represents the most significant electrical limitation for high-current applications.

Selection between substitutes depends on application-specific requirements: RoHS compliance necessity, flange configuration compatibility with the mating connector, current and voltage demands, and operating temperature extremes.

Frequently Asked Questions (FAQ)

Q: Can 5745080-4 or 5745080-6 be used in applications requiring 7.5A per contact?

A: No. Both TE Connectivity parts are rated for 6A per contact maximum. Applications requiring 7.5A per contact must use the DDMS50S300 or evaluate alternative connector families.

Q: What is the primary difference between 5745080-4 and 5745080-6?

A: Both parts are electrically and mechanically identical. The difference lies in the connector variant designation (suffix -4 versus -6), which may indicate different mating interface configurations or internal pin arrangements. Consult TE Connectivity documentation for specific variant details.

Q: Is L77SDD50SOL2 suitable for high-current applications?

A: No. The L77SDD50SOL2 is rated for 3A per contact, making it unsuitable for applications exceeding this current threshold. This part is appropriate for signal-level or low-current power distribution only.

Q: Can the DDMS50S300 be replaced with a substitute in a 300V application?

A: The TE Connectivity parts (5745080-4, 5745080-6) are rated for 125V maximum and cannot be used in 300V circuits. The L77SDD50SOL2 is rated for 250V and may be acceptable depending on the specific voltage margin requirements of the application. Verify that the selected substitute meets or exceeds the application voltage specification.

Q: What are the flange configuration differences among these parts?

A: The DDMS50S300 features a board-side flange. The TE Connectivity parts (5745080-4, 5745080-6) feature mating-side female screwlock flanges with 4-40 threads, enabling mechanical locking with compatible plugs. The L77SDD50SOL2 features an unthreaded housing/shell flange. Flange compatibility must be verified with the mating connector before substitution.

Q: Are all substitute parts available in the same packaging as the DDMS50S300?

A: No. The DDMS50S300 is supplied in trays. The TE Connectivity parts (5745080-4, 5745080-6) are supplied in tubes. The L77SDD50SOL2 is supplied in trays. Packaging differences may affect procurement, handling, and storage procedures but do not affect electrical or mechanical compatibility.

Q: Which substitute part is recommended for RoHS-compliant applications?

A: Both TE Connectivity parts (5745080-4, 5745080-6) carry ROHS3 compliance certification. The L77SDD50SOL2 carries RoHS compliance certification. All three substitutes satisfy RoHS requirements; selection should be based on electrical ratings and flange configuration compatibility.