L77SDD50STA113 Equivalent & Substitute Parts

Part Overview

The L77SDD50STA113 is a 50-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This through-hole solder-terminated connector features female sockets in a 3-row configuration with shell size 5 (DD, D) layout. The connector is actively produced and stocked with 690 units available in tray packaging. D-Sub receptacle connectors of this specification are essential components in applications requiring robust signal transmission across multiple channels with standardized mechanical and electrical interfaces. Alternative equivalent parts may be required due to supply chain considerations, packaging format preferences, or specific application requirements regarding mounting configuration or electrical ratings.

Substiute Parts

L77SDD50STA113

Amphenol ICC (Commercial Products)In Stock: 742L77SDD50STA113 Datasheet

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09665116501

HARTINGIn Stock: 145209665116501 Datasheet

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SDDB-50S(55)

Hirose Electric Co LtdIn Stock: 982SDDB-50S(55) Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Equivalent and substitute parts for the L77SDD50STA113 are determined by strict adherence to core electrical and mechanical parameters. All substitute candidates must satisfy the following mandatory criteria:

Primary Compatibility Parameters:

• Connector style: D-Sub
• Connector type: Receptacle, Female Sockets
• Number of positions: 50
• Number of rows: 3
• Shell size, connector layout: 5 (DD, D)
• Termination method: Solder
• Contact type: Signal
• Material flammability rating: UL94 V-0
• Operating temperature range: -55°C ~ 125°C
• Moisture sensitivity level: 1 (Unlimited)

Secondary Compatibility Parameters:

• Mounting type: Through Hole (primary specification) or Through Hole with Panel Mount capability
• Contact material: Phosphor Bronze or Copper Alloy
• Contact form: Stamped
• Dielectric material: Thermoplastic or polyester-based glass-filled compounds

The substitute parts listed below meet all primary compatibility parameters and maintain functional equivalence for standard D-Sub 50-position receptacle applications. Variations in secondary parameters such as shell finish, contact finish specifications, current rating, and voltage rating are noted in the parameter comparison table and do not preclude substitution in applications where those specific values are not design-critical constraints.

Parameter Comparison

Engineering Selection Recommendations

All three connectors listed—L77SDD50STA113 (Amphenol ICC), 09665116501 (HARTING), and SDDB-50S(55) (Hirose Electric)—are active production components with full RoHS compliance status. The L77SDD50STA113 and SDDB-50S(55) both carry RoHS Compliant designation, while the HARTING part carries ROHS3 Compliant status. All three components meet UL94 V-0 flammability requirements and operate across the -55°C to 125°C temperature range with MSL 1 (Unlimited) moisture sensitivity classification.

L77SDD50STA113 (Amphenol ICC): This connector is specified for through-hole mounting with tin-plated steel shell and gold-plated contacts at flash thickness. It carries a 3A current rating at 250V voltage specification. This part is suitable for applications requiring standard through-hole PCB assembly with tin-plated shell characteristics.

09665116501 (HARTING): This connector provides higher current capacity at 6.5A with through-hole mounting configuration. The steel shell lacks specified finish, and contact finish specifications are not provided. This part is available in bulk packaging and offers increased current-handling capability for applications requiring higher signal current capacity.

SDDB-50S(55) (Hirose Electric): This connector supports both panel mount and through-hole mounting configurations, providing design flexibility. It features nickel-plated steel shell with gold-plated contacts at 8.00µin thickness and operates at 350V voltage specification. The higher voltage rating and dual mounting capability make this part suitable for applications requiring panel-mount integration or elevated voltage operation.

Selection between these parts depends on specific application requirements regarding mounting configuration, current capacity, voltage specification, and packaging format. All three parts maintain functional equivalence for 50-position D-Sub receptacle signal transmission applications.

Frequently Asked Questions (FAQ)

Q: Can the HARTING 09665116501 be used as a direct replacement for the L77SDD50STA113?

A: The HARTING 09665116501 meets all primary compatibility parameters for D-Sub 50-position receptacle connectors. Both parts feature identical position count, row configuration, shell size, solder termination, and operating temperature range. The HARTING part provides higher current capacity (6.5A versus 3A) and operates at unspecified voltage. Substitution is valid for applications where the higher current rating does not create design conflicts and where contact finish specifications are not design-critical.

Q: What is the difference between the Amphenol and Hirose mounting configurations?

A: The L77SDD50STA113 (Amphenol ICC) is specified for through-hole mounting only. The SDDB-50S(55) (Hirose Electric) supports both panel mount and through-hole mounting configurations. If your application requires panel-mount integration, the Hirose part provides this capability. If your application requires through-hole mounting only, both parts are functionally equivalent in this regard.

Q: Are there differences in shell finish that affect substitution?

A: The L77SDD50STA113 features tin-plated steel shell, the HARTING part features unspecified steel finish, and the Hirose part features nickel-plated steel shell. These finish variations do not preclude substitution for standard signal transmission applications. Shell finish selection typically depends on environmental corrosion resistance requirements and specific application specifications.

Q: Does the contact finish thickness difference between parts affect compatibility?

A: The L77SDD50STA113 specifies flash gold plating, while the SDDB-50S(55) specifies 8.00µin (0.203µm) gold plating. Both gold-plated contact finishes provide equivalent electrical performance for signal transmission. Contact finish thickness variations do not affect mechanical or electrical compatibility for standard D-Sub receptacle applications.

Q: What packaging format differences exist between these parts?

A: The L77SDD50STA113 and SDDB-50S(55) are supplied in tray packaging, while the HARTING 09665116501 is supplied in bulk packaging. Packaging format selection depends on assembly process requirements and inventory management preferences. Tray packaging typically provides better component protection during handling and storage, while bulk packaging may offer cost advantages for high-volume applications.

Q: Can I use the SDDB-50S(55) in a through-hole only application?

A: Yes. The SDDB-50S(55) supports both panel mount and through-hole mounting configurations. It functions as a through-hole connector and is fully compatible with through-hole PCB assembly processes. The additional panel-mount capability does not restrict its use in through-hole-only applications.

Q: Are all three parts RoHS compliant?

A: Yes. The L77SDD50STA113 and SDDB-50S(55) carry RoHS Compliant designation. The HARTING 09665116501 carries ROHS3 Compliant designation. All three parts meet RoHS compliance requirements for lead-free and restricted substance specifications.

Q: What is the significance of the 350V rating on the Hirose part versus 250V on the Amphenol part?

A: The SDDB-50S(55) is rated for 350V operation, while the L77SDD50STA113 is rated for 250V operation. The higher voltage rating on the Hirose part indicates suitability for applications requiring elevated voltage specifications. If your application operates at voltages exceeding 250V, the Hirose part with 350V rating is the appropriate selection.

Q: Do all parts support the same current capacity?

A: No. The L77SDD50STA113 and SDDB-50S(55) are both rated at 3A current capacity. The HARTING 09665116501 is rated at 6.5A current capacity. If your application requires current capacity exceeding 3A, the HARTING part provides higher current-handling capability. For applications operating at 3A or below, all three parts are equivalent.