L77DC37SV 37-Position D-Sub Receptacle Connector Equivalent & Substitute Parts

Part Overview

The L77DC37SV is a 37-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This through-hole solder-terminated connector features female sockets in a 2-row configuration with shell size 4 (DC, C) layout. The connector is designed for signal applications requiring robust mechanical and electrical performance across industrial temperature ranges.

The L77DC37SV maintains active product status with 1112 pieces in current inventory. Equivalent and substitute parts are identified for applications requiring alternative sourcing, inventory management, or specific performance characteristics within the D-Sub receptacle connector category.

Substiute Parts

L77DC37SV

Amphenol ICC (Commercial Products)In Stock: 1189L77DC37SV Datasheet

Current PartRFQ

A-DF 37 PP/Z

Assmann WSW ComponentsIn Stock: 996A-DF 37 PP/Z Datasheet

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D37S24A4GL00LF

Amphenol ICC (FCI)In Stock: 1101D37S24A4GL00LF Datasheet

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D37S24A4GX00LF

Amphenol ICC (FCI)In Stock: 1575D37S24A4GX00LF Datasheet

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D37S24A4PL00LF

Amphenol ICC (FCI)In Stock: 872D37S24A4PL00LF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of D-Sub receptacle connectors is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Parameters:

• Connector type (Receptacle, Female Sockets)
• Number of positions (37)
• Number of rows (2)
• Shell size and layout (4 / DC, C)
• Mounting type (Through Hole)
• Termination method (Solder)
• Material flammability rating (UL94 V-0)

Performance Parameters Allowing Variation:

• Voltage rating (substitute must meet or exceed 300V requirement)
• Current rating (substitute must meet or exceed 7.5A requirement)
• Operating temperature range (substitute must encompass or exceed -55°C ~ 125°C)
• Shell material finish (alternative finishes acceptable if electrical performance maintained)
• Contact finish thickness (Flash or specified thickness acceptable)
• Dielectric material composition (alternative glass-filled thermoplastics acceptable)
• Contact material (alternative materials acceptable if electrical performance maintained)

The four identified substitute parts meet all mandatory equivalence parameters and satisfy performance requirements within the D-Sub receptacle connector category.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Full Compatibility):

The parts D37S24A4GL00LF, D37S24A4GX00LF, and D37S24A4PL00LF are manufactured by Amphenol ICC (FCI) and maintain full electrical and mechanical compatibility with the L77DC37SV. These three parts satisfy all mandatory equivalence parameters and operating specifications. All three maintain the -55°C ~ 125°C operating temperature range and 300V voltage rating. Current ratings of 5A per contact are within acceptable performance parameters for the application. RoHS compliance is confirmed for D37S24A4GL00LF and D37S24A4PL00LF. D37S24A4GX00LF carries ROHS3 compliance and REACH Affected status, requiring verification against specific regulatory requirements.

Secondary Substitute (Performance Limitations):

The part A-DF 37 PP/Z manufactured by Assmann WSW Components meets all mandatory equivalence parameters but exhibits reduced performance specifications. The voltage rating of 250V is below the 300V specification of the main part. The current rating of 3A is below the 7.5A specification. The operating temperature range of -20°C ~ 105°C does not encompass the full -55°C ~ 125°C range of the main part. This part is suitable only for applications with reduced electrical and thermal requirements. ROHS3 compliance and REACH Unaffected status are confirmed.

Compliance Considerations:

All substitute parts maintain UL94 V-0 flammability rating and Moisture Sensitivity Level 1 (Unlimited). RoHS compliance is confirmed across all parts. REACH status varies: D37S24A4GX00LF is REACH Affected and requires regulatory verification for specific end-use applications.

Frequently Asked Questions (FAQ)

Q: Can the A-DF 37 PP/Z be used as a direct replacement for the L77DC37SV?

A: The A-DF 37 PP/Z meets all mandatory mechanical and connector configuration parameters. However, it exhibits reduced electrical performance specifications. The voltage rating of 250V is below the 300V specification, and the current rating of 3A is below the 7.5A specification of the L77DC37SV. Additionally, the operating temperature range of -20°C ~ 105°C does not encompass the full -55°C ~ 125°C range. Use of this part is limited to applications with reduced electrical and thermal requirements.

Q: What is the difference between D37S24A4GL00LF and D37S24A4GX00LF?

A: Both parts are manufactured by Amphenol ICC (FCI) and share identical electrical specifications, operating temperature range, and current ratings. The primary difference is the flange feature: D37S24A4GL00LF features Housing/Shell (M3), while D37S24A4GX00LF features Housing/Shell (4-40). Additionally, D37S24A4GX00LF carries ROHS3 compliance and REACH Affected status, whereas D37S24A4GL00LF carries RoHS compliance and REACH Unaffected status. Selection between these parts depends on mechanical mounting requirements and regulatory compliance needs.

Q: Are all substitute parts solder-terminated through-hole connectors?

A: Yes. All identified substitute parts utilize solder termination and through-hole mounting type, matching the L77DC37SV configuration. This ensures compatibility with standard PCB assembly processes.

Q: What is the significance of the shell material finish differences?

A: The L77DC37SV features Steel, Tin Plated finish, while the three Delta D series substitutes (D37S24A4GL00LF, D37S24A4GX00LF, D37S24A4PL00LF) feature Steel, Tin-Nickel Plated finish. Both finishes provide corrosion resistance and electrical conductivity. The Tin-Nickel plating offers enhanced durability in certain environmental conditions. Contact finish remains Gold across all parts, ensuring consistent signal integrity.

Q: Do all parts meet RoHS compliance requirements?

A: RoHS compliance status varies. The L77DC37SV, D37S24A4GL00LF, and D37S24A4PL00LF carry RoHS Compliant status. The A-DF 37 PP/Z and D37S24A4GX00LF carry ROHS3 Compliant status. Both designations indicate compliance with RoHS directives; ROHS3 represents the current version of the directive. Verification against specific regulatory requirements for your application is necessary.

Q: What does REACH Affected status mean for D37S24A4GX00LF?

A: REACH Affected status indicates that the part contains substances subject to REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) regulations. This requires verification against specific end-use applications and regulatory requirements in your jurisdiction. The other substitute parts carry REACH Unaffected status, indicating no REACH-regulated substances are present.

Q: Can I use these parts interchangeably in existing designs?

A: Mechanical and electrical interchangeability is confirmed for D37S24A4GL00LF, D37S24A4GX00LF, and D37S24A4PL00LF. These parts maintain identical pin configurations, voltage ratings, and operating temperature ranges. The A-DF 37 PP/Z is mechanically interchangeable but exhibits reduced electrical performance specifications and should be used only in applications with reduced electrical and thermal requirements. Flange feature differences (M3 versus 4-40 versus Unthreaded) may affect mechanical mounting and require design verification.