Amphenol ICC L17H3210121 D-Sub Connector: Equivalent & Substitute Parts

Part Overview

The Amphenol ICC L17H3210121 is a 9-position D-Sub stacked connector with right-angle solder termination, designed for signal applications requiring through-hole mounting. This connector features a male plug and female receptacle configuration with tin-plated steel shell and gold-flashed contacts. The part is currently active in production with 936 units in stock inventory.

Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part specifications, enabling direct functional replacement in applications where the connector footprint and performance characteristics remain compatible.

Substiute Parts

L17H3210121

Amphenol ICC (Commercial Products)In Stock: 964L17H3210121 Datasheet

Current PartRFQ

178-009-313R571

NorComp Inc.In Stock: 4802178-009-313R571 Datasheet

SimilarRFQ

179-009-313R571

NorComp Inc.In Stock: 1282179-009-313R571 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the L17H3210121 are identified based on strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Connector style: D-Sub - Stacked configuration
• Position count: 9, 9 positions in 2, 2 rows
• Shell size and layout: 1 (DE, E)
• Connector type: Plug with male pins and receptacle with female sockets
• Termination method: Solder
• Contact type: Signal
• Backset spacing: 0.318" (8.08mm)
• Flange feature: Mating side female screwlock (4-40)
• Contact finish: Gold with flash thickness
• Material flammability: UL94 V-0
• Through-hole mounting capability

Allowable Parameter Variations:

• Shell material finish: Tin plated or nickel plated
• Current rating: Equal to or greater than 3A
• Operating temperature: Minimum range of -55°C to 105°C or higher
• Voltage rating: Equal to or greater than 250V, or unspecified
• Dielectric material composition
• Contact material composition
• Mounting type: Panel mount, board edge, or through-hole configurations
• Compliance certifications: RoHS or ROHS3

The substitute parts NorComp 178-009-313R571 and 179-009-313R571 satisfy all mandatory matching parameters while exhibiting allowable variations in shell finish, current capacity, and mounting flexibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: L17H3210121 (Amphenol ICC)

The L17H3210121 remains the specified component when the application requires the extended operating temperature range of -55°C to 125°C or the 250V voltage rating. This part carries active product status with RoHS compliance and established supply availability.

Substitute Option 1: 178-009-313R571 (NorComp)

The NorComp 178-009-313R571 provides equivalent electrical and mechanical functionality with enhanced current capacity (5A versus 3A). This part is suitable for applications where panel mount flexibility is beneficial. The nickel-plated steel shell offers alternative corrosion resistance characteristics compared to tin plating. Operating temperature range of -55°C to 105°C and ROHS3 compliance are applicable. Higher inventory availability (4713 units) supports supply chain continuity.

Substitute Option 2: 179-009-313R571 (NorComp)

The NorComp 179-009-313R571 provides equivalent electrical and mechanical functionality with board edge mounting capability in addition to through-hole configuration. Current capacity is 5A. Nickel-plated steel shell and ROHS3 compliance apply. Operating temperature range is -55°C to 105°C. This configuration supports applications requiring board edge connector positioning.

Selection Criteria:

• If application operates above 105°C or requires 250V rating: use L17H3210121
• If application requires panel mount flexibility: use 178-009-313R571
• If application requires board edge mounting: use 179-009-313R571
• If higher current capacity (5A) is beneficial: use either NorComp substitute
• All three parts satisfy UL94 V-0 flammability, gold contact finish, and 9-position D-Sub stacked configuration requirements

Frequently Asked Questions (FAQ)

Q: Can the NorComp 178-009-313R571 or 179-009-313R571 directly replace the Amphenol ICC L17H3210121 in existing designs?

A: Direct replacement is possible when the application operating temperature does not exceed 105°C and the voltage requirement does not exceed the unspecified rating of the NorComp parts. The identical 9-position D-Sub stacked configuration, backset spacing (0.318"), female screwlock flange, and solder termination ensure mechanical and electrical compatibility. The higher current rating (5A) of the NorComp parts provides additional capacity margin.

Q: What is the difference between tin plating and nickel plating on the shell material?

A: The L17H3210121 features tin-plated steel shell, while both NorComp substitutes feature nickel-plated steel shell. Both finishes provide corrosion resistance and are suitable for standard industrial environments. Nickel plating offers enhanced durability in certain chemical environments. The choice between these finishes depends on specific application environmental requirements.

Q: Are there mounting type differences between the three parts?

A: The L17H3210121 specifies through-hole right-angle mounting. The 178-009-313R571 adds panel mount capability to through-hole right-angle configuration. The 179-009-313R571 adds board edge mounting capability to through-hole right-angle configuration. All three parts support through-hole solder termination. Selection depends on whether panel mount or board edge positioning is required for the application.

Q: What is the significance of the operating temperature range difference?

A: The L17H3210121 operates from -55°C to 125°C, while both NorComp substitutes operate from -55°C to 105°C. Applications requiring operation above 105°C must use the L17H3210121. Applications operating within -55°C to 105°C range can use any of the three parts.

Q: How do the RoHS and ROHS3 compliance statuses differ?

A: The L17H3210121 carries RoHS Compliant status. Both NorComp parts carry ROHS3 Compliant status. ROHS3 represents an updated compliance framework. Both statuses indicate restriction of hazardous substances in accordance with applicable regulations. Either compliance level is acceptable for applications requiring RoHS certification.

Q: What does "Moisture Sensitivity Level (MSL): 1 (Unlimited)" mean for the L17H3210121?

A: MSL 1 with unlimited shelf life indicates the component has no moisture sensitivity restrictions. This part can be stored and handled without special moisture control measures, simplifying inventory management and logistics.

Q: Are the contact materials compatible between the main part and substitutes?

A: The L17H3210121 specifies brass and phosphor bronze contact material. The 178-009-313R571 does not specify contact material in the provided data. The 179-009-313R571 specifies brass contact material. All three parts feature gold flash contact finish, ensuring consistent electrical performance and corrosion resistance at mating surfaces.

Q: What inventory considerations should guide part selection?

A: The L17H3210121 has 936 units in stock. The 178-009-313R571 has 4713 units in stock. The 179-009-313R571 has 1220 units in stock. Higher inventory availability of the NorComp 178-009-313R571 may support extended production runs or rapid fulfillment requirements when substitution parameters are satisfied.