L17HTNCGSOL2RM81C D-Sub 37 Position Receptacle Connector Equivalent & Substitute Parts

Part Overview

The L17HTNCGSOL2RM81C is a 37 position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This through-hole solder termination connector features female sockets with a mating side female screwlock (M3) flange and is designed for signal applications. The part is currently active in production with 1100 units in stock.

Equivalent and substitute parts are identified when design requirements permit variations in shell finish, flange configuration, contact material, or compliance certifications while maintaining core electrical and mechanical compatibility. Substitutes are necessary when the primary part is unavailable, when alternative compliance certifications are required, or when design specifications allow for acceptable parameter variations.

Substiute Parts

L17HTNCGSOL2RM81C

Amphenol ICC (Commercial Products)In Stock: 1143L17HTNCGSOL2RM81C 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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D37S24A4GV00LF

Amphenol ICC (FCI)In Stock: 1407D37S24A4GV00LF 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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DC37S364TLF

Amphenol ICC (FCI)In Stock: 1134DC37S364TLF Datasheet

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DCM37S300N

Amphenol ICC (FCI)In Stock: 749DCM37S300N Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the L17HTNCGSOL2RM81C is based on the following core parameters that must remain constant or compatible:

Critical Parameters (Must Match or Be Compatible):

• Connector type: D-Sub receptacle, female sockets
• Number of positions: 37
• Shell size/layout: 4 (DC, C)
• Mounting type: Through hole
• Termination: Solder
• Contact finish: Gold
• Moisture sensitivity level: 1 (Unlimited)

Parameters Allowing Variation:

• Shell material finish (nickel plated, tin plated, tin-nickel plated)
• Flange feature configuration (mating side screwlock M3, housing shell unthreaded, housing shell M3, housing shell 4-40)
• Current rating (3A to 7.5A per contact)
• Voltage rating (250V to 600V)
• Operating temperature range (within -55°C to 155°C envelope)
• Contact material (copper alloy, phosphor bronze, brass)
• Dielectric material (thermoplastic glass filled, polybutylene terephthalate)
• RoHS compliance status
• Product status (active or obsolete)

Substitutes are grouped by manufacturer and series to facilitate selection based on availability, compliance requirements, and specific application constraints.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs):

The D37S24A4GX00LF, D37S24A4GV00LF, and D37S24A4GL00LF from the Amphenol ICC (FCI) Delta D series are the preferred substitutes. All three maintain the 37 position configuration, through-hole solder termination, and 5A per contact current rating. These parts are active in production with high inventory levels (1090–1502 units). The D37S24A4GV00LF and D37S24A4GX00LF offer ROHS3 compliance, which may be required for new product designs. The D37S24A4GL00LF provides RoHS compliance with REACH unaffected status.

Voltage Consideration:

The L17HTNCGSOL2RM81C is rated at 600V, while most substitutes are rated at 300V. Applications requiring 600V operation must use the primary part or verify that the 300V rating is acceptable for the intended circuit. The A-DF 37 PP/Z is rated at 250V and is suitable only for applications with lower voltage requirements.

Temperature Range Consideration:

The L17HTNCGSOL2RM81C operates from -55°C to 150°C. The DCM37S300N extends to 155°C but is obsolete. The Delta D series substitutes operate to 125°C, which is acceptable for most applications within the -55°C to 125°C range. The A-DF 37 PP/Z operates only to 105°C and is limited to applications with narrower temperature requirements.

Current Rating Consideration:

The L17HTNCGSOL2RM81C is rated at 5A. The A-DF 37 PP/Z is rated at 3A and is suitable only for lower current applications. The DCM37S300N is rated at 7.5A per contact and provides higher current capacity but is obsolete.

Compliance and Regulatory Status:

For applications requiring RoHS compliance, select D37S24A4GL00LF, D37S24A4GV00LF, D37S24A4GX00LF, DC37S364TLF, or A-DF 37 PP/Z. For ROHS3 compliance specifically, select D37S24A4GV00LF or D37S24A4GX00LF. The L17HTNCGSOL2RM81C and DCM37S300N are RoHS non-compliant and are suitable only for legacy systems or applications where RoHS compliance is not required.

Flange Configuration:

The L17HTNCGSOL2RM81C features a mating side female screwlock (M3). Substitutes with different flange configurations (housing shell unthreaded, housing shell M3, housing shell 4-40, or mating side female screwlock 4-40) may require mechanical redesign of the mating interface. Verify flange compatibility before selection.

Obsolete Parts:

The DCM37S300N is obsolete and should not be selected for new designs. It is listed for reference only in legacy system maintenance scenarios.

Frequently Asked Questions (FAQ)

Q: Can I substitute the L17HTNCGSOL2RM81C with the A-DF 37 PP/Z?

A: The A-DF 37 PP/Z is mechanically and electrically compatible in terms of connector type, position count, and shell size. However, it has a lower current rating (3A versus 5A), lower voltage rating (250V versus 600V), and narrower operating temperature range (-20°C to 105°C versus -55°C to 150°C). Substitution is acceptable only if your application operates within these reduced specifications.

Q: What is the difference between the D37S24A4GL00LF, D37S24A4GV00LF, and D37S24A4GX00LF?

A: All three are from the Amphenol ICC (FCI) Delta D series with identical electrical ratings (5A per contact, 300V, -55°C to 125°C). The primary differences are flange configuration and compliance status. The D37S24A4GL00LF has a housing shell M3 flange and RoHS compliance. The D37S24A4GV00LF has a mating side female screwlock (4-40) flange and ROHS3 compliance. The D37S24A4GX00LF has a housing shell 4-40 flange and ROHS3 compliance. Select based on your flange interface requirements and compliance certifications.

Q: Why is the voltage rating lower on the Delta D series substitutes compared to the L17HTNCGSOL2RM81C?

A: The L17HTNCGSOL2RM81C is rated at 600V, while the Delta D series (D37S24A4GL00LF, D37S24A4GV00LF, D37S24A4GX00LF) is rated at 300V. This reflects different design specifications and dielectric material properties. If your application requires 600V operation, the L17HTNCGSOL2RM81C must be used. If your application operates at 300V or below, the Delta D series substitutes are acceptable.

Q: Can I use the DCM37S300N as a substitute?

A: The DCM37S300N is obsolete and should not be selected for new designs. It is listed for reference only when servicing legacy equipment. For new applications, select from the active products: L17HTNCGSOL2RM81C, D37S24A4GL00LF, D37S24A4GV00LF, D37S24A4GX00LF, D37S24A4PL00LF, DC37S364TLF, or A-DF 37 PP/Z.

Q: What does RoHS compliance mean, and why does it matter?

A: RoHS (Restriction of Hazardous Substances) compliance indicates that the part does not contain restricted substances such as lead, mercury, cadmium, or hexavalent chromium. ROHS3 is a more recent version of the standard. If your application or market requires RoHS compliance, select D37S24A4GL00LF, D37S24A4GV00LF, D37S24A4GX00LF, DC37S364TLF, or A-DF 37 PP/Z. The L17HTNCGSOL2RM81C is RoHS non-compliant.

Q: Does the contact material affect substitution compatibility?

A: Contact material (copper alloy, phosphor bronze, or brass) affects electrical and mechanical performance but does not prevent substitution if other parameters are compatible. Phosphor bronze contacts (used in Delta D series) provide different wear and corrosion characteristics compared to copper alloy contacts (used in L17HTNCGSOL2RM81C and DC37S364TLF). Both are acceptable for signal applications. Verify contact material specifications if your application has specific corrosion or wear requirements.

Q: What is the significance of the flange feature in D-Sub connectors?

A: The flange feature determines how the connector is mounted and secured to the mating connector or panel. The L17HTNCGSOL2RM81C uses a mating side female screwlock (M3), which requires M3 screws on the mating plug connector. Substitutes with different flange configurations (housing shell unthreaded, housing shell M3, housing shell 4-40, or mating side female screwlock 4-40) require different mounting hardware and may not be mechanically compatible with existing mating connectors. Verify flange compatibility before substitution.

Q: Is the D37S24A4PL00LF a suitable substitute?

A: The D37S24A4PL00LF is mechanically and electrically compatible with the L17HTNCGSOL2RM81C. It has the same 5A per contact current rating, 300V voltage rating, and -55°C to 125°C operating temperature range. However, it lacks the board lock feature present in the L17HTNCGSOL2RM81C and has a housing shell M3 flange instead of a mating side female screwlock (M3). It is RoHS compliant and REACH unaffected. Substitution is acceptable if your application does not require the board lock feature and if the housing shell M3 flange is compatible with your mating interface.

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

A: Shell finish affects corrosion resistance and environmental durability. Tin plating (used on A-DF 37 PP/Z and DC37S364TLF) provides basic corrosion protection. Tin-nickel plating (used on Delta D series) provides enhanced corrosion resistance and is preferred for applications exposed to harsh environments or high humidity. Nickel plating (used on L17HTNCGSOL2RM81C) provides good corrosion resistance. Select based on your environmental requirements.

Q: Can I use the DC37S364TLF as a substitute?

A: The DC37S364TLF is mechanically and electrically compatible with the L17HTNCGSOL2RM81C in terms of connector type, position count, and current rating (5A per contact). However, it has a lower voltage rating (300V versus 600V) and narrower operating temperature range (-55°C to 125°C versus -55°C to 150°C). It is RoHS compliant and REACH unaffected. Substitution is acceptable if your application operates within these specifications and if the housing shell unthreaded flange is compatible with your mating interface.