L177SDC37SVF D-Sub Receptacle Connector - Equivalent & Substitute Parts

Part Overview

The L177SDC37SVF is a 37-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This connector features female sockets with solder cup termination and is designed for free-hanging, in-line applications. The part is currently active in production with 890 units in stock. Alternative equivalent parts may be required due to application-specific mounting requirements, availability constraints, or design modifications that necessitate different mechanical or electrical characteristics.

Substiute Parts

L177SDC37SVF

Amphenol ICC (Commercial Products)In Stock: 930L177SDC37SVF Datasheet

Current PartRFQ

171-037-203L001

NorComp Inc.In Stock: 1417171-037-203L001 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the L177SDC37SVF with equivalent parts is determined by the following critical parameters that must remain consistent:

Core Compatibility Parameters:

• Connector type: Receptacle, Female Sockets
• Position count: 37 positions
• Row configuration: 2 rows
• Shell size and layout: 4 (DC, C)
• Termination method: Solder Cup
• Contact finish: Gold plating

Application-Dependent Parameters:

• Mounting type (free-hanging vs. panel mount)
• Current rating (3A minimum requirement)
• Voltage rating (250V minimum requirement)
• Operating temperature range (-55°C to 125°C minimum)
• Shell material and finish specifications

The substitute part 171-037-203L001 from NorComp Inc. maintains all core compatibility parameters. However, it differs in mounting configuration (panel mount vs. free-hanging), current rating (5A vs. 3A), and operating temperature range (-50°C to 100°C vs. -55°C to 125°C). These differences must be evaluated against specific application requirements before substitution.

Parameter Comparison

Engineering Selection Recommendations

L177SDC37SVF Selection Criteria:

• Applications requiring free-hanging, in-line mounting configuration
• Systems operating across the full temperature range of -55°C to 125°C
• Designs with 250V voltage specifications
• Applications where tin-plated steel shell finish is specified
• Compliance with RoHS standard required

171-037-203L001 Selection Criteria:

• Applications requiring panel-mount connector configuration
• Systems operating within -50°C to 100°C temperature range
• Designs where higher current capacity (5A) is beneficial
• Applications where nickel-plated steel shell finish is acceptable
• Compliance with ROHS3 standard required

Both parts maintain active product status and share identical core D-Sub architecture (37 positions, 2 rows, shell size 4, solder cup termination, gold-plated contacts, UL94 V-0 flammability rating). Selection between these parts depends on mechanical mounting requirements and environmental operating conditions specific to the application.

Frequently Asked Questions (FAQ)

Q: Can the 171-037-203L001 directly replace the L177SDC37SVF in an existing design?

A: Direct replacement is not recommended without design review. While both connectors share identical position count, row configuration, shell size, and termination type, they differ in mounting type (panel mount vs. free-hanging), operating temperature range, and shell finish. The application's mechanical mounting structure and thermal environment must be evaluated.

Q: What is the significance of the different shell finishes (tin-plated vs. nickel-plated)?

A: Shell finish affects corrosion resistance and environmental durability. Tin-plated steel (L177SDC37SVF) and nickel-plated steel (171-037-203L001) provide different protection profiles. Selection depends on the application's exposure to moisture, chemicals, and environmental conditions.

Q: Does the higher current rating of the 171-037-203L001 (5A vs. 3A) affect compatibility?

A: Higher current rating indicates greater capacity but does not affect electrical compatibility. If the application requires only 3A, either part is suitable. If the application requires higher current capacity, the 171-037-203L001 provides additional margin.

Q: Are there temperature range limitations when substituting these parts?

A: Yes. The L177SDC37SVF operates from -55°C to 125°C, while the 171-037-203L001 operates from -50°C to 100°C. Applications requiring operation below -50°C or above 100°C must use the L177SDC37SVF.

Q: What does the difference in RoHS compliance status mean?

A: L177SDC37SVF is RoHS Compliant (RoHS 2). The 171-037-203L001 is ROHS3 Compliant, which represents a more recent regulatory standard. Both meet hazardous substance restrictions; ROHS3 includes additional substance categories.

Q: Are the dielectric materials interchangeable?

A: Both use glass-filled thermoplastic materials (thermoplastic vs. PBT), which provide similar electrical and mechanical properties. Material selection does not prevent substitution but may affect specific environmental resistance characteristics.

Q: What packaging format is used for both parts?

A: Both L177SDC37SVF and 171-037-203L001 are supplied in tray packaging, suitable for automated assembly and component handling.