L17DCFRA37PC309 Equivalent & Substitute Parts

Part Overview

The L17DCFRA37PC309 is a 37-position D-Sub plug connector manufactured by Amphenol ICC, featuring male pins and IDC ribbon cable termination. This free-hanging, in-line connector is designed for signal applications requiring a 250V rating and 3A current capacity across an operating temperature range of -55°C to 105°C. The connector utilizes tin-plated steel shell construction with gold-plated brass contacts and is UL94 V-0 rated with RoHS compliance.

Substitute parts are necessary when the original manufacturer part becomes unavailable, when alternative mounting configurations are required, or when inventory constraints necessitate equivalent alternatives that maintain functional compatibility within specified electrical and mechanical parameters.

Substiute Parts

L17DCFRA37PC309

Amphenol ICC (Commercial Products)In Stock: 1150L17DCFRA37PC309 Datasheet

Current PartRFQ

09664286700

HARTINGIn Stock: 104509664286700 Datasheet

SimilarRFQ

8237-6000

3MIn Stock: 16428237-6000 Datasheet

SimilarRFQ

8237-6003

3MIn Stock: 7778237-6003 Datasheet

SimilarRFQ

8237-6009

3MIn Stock: 9138237-6009 Datasheet

SimilarRFQ

8237-7000

3MIn Stock: 13538237-7000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the L17DCFRA37PC309 is determined by strict alignment with the following critical parameters:

Mandatory Matching Parameters:

• Connector Style: D-Sub
• Connector Type: Plug, Male Pins
• Number of Positions: 37
• Number of Rows: 2
• Shell Size, Connector Layout: 4 (DC, C)
• Termination: IDC, Ribbon Cable
• Material Flammability Rating: UL94 V-0
• Operating Temperature Range: -55°C ~ 105°C

Allowable Variations:

• Mounting Type: Free-hanging (in-line) or panel mount configurations are functionally compatible when the connector layout and pin configuration remain identical
• Shell Material Finish: Steel with tin plate or alternative finishes meeting equivalent corrosion resistance
• Contact Finish: Gold plating at specified thickness or equivalent noble metal finishes
• Current Rating: Substitute parts may have lower current ratings; applications must not exceed the substitute part's rating
• Voltage Rating: Not specified for all substitute parts; the main part's 250V rating establishes the minimum requirement
• Packaging: Tray or bulk packaging does not affect functional compatibility

The identified substitute parts (8237-6009, 8237-6000, 8237-6003, 8237-7000, and 09664286700) all maintain the core D-Sub 37-position configuration with IDC termination and UL94 V-0 compliance, enabling direct functional substitution within the specified parameter constraints.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection Criteria:

The L17DCFRA37PC309 maintains active product status with full RoHS compliance and the highest current rating (3A) among the available substitutes. Selection of alternative parts must account for the following constraints:

Current Rating Limitations: All identified 3M substitute parts (8237-6000, 8237-6003, 8237-6009, 8237-7000) are rated for 1A maximum current, representing a 67% reduction from the main part's 3A rating. The HARTING 09664286700 provides an intermediate 2A rating. Applications requiring the full 3A capacity of the L17DCFRA37PC309 cannot be substituted with these alternatives without circuit redesign or parallel connection configurations.

Mounting Configuration Differences: The L17DCFRA37PC309 is configured for free-hanging, in-line mounting. All substitute parts are panel-mount configurations. Mechanical integration and PCB layout must accommodate this difference. Panel-mount substitutes require appropriate mounting hardware and panel cutouts.

Product Status Consideration: The 8237-7000 carries obsolete status despite current inventory availability. Active-status alternatives (8237-6000, 8237-6003, 8237-6009, 09664286700) are preferred for new designs and long-term supply chain stability.

Compliance and Temperature Range: All substitute parts maintain UL94 V-0 flammability compliance and -55°C to 105°C operating temperature range (where specified), ensuring functional equivalence in thermal environments. ROHS3 compliance of 3M and HARTING parts exceeds the RoHS compliance of the main part.

Contact Finish and Shell Material: The 09664286700 (HARTING) does not specify contact finish or thickness, introducing uncertainty in contact resistance and wear characteristics. 3M parts provide explicit gold plating at 30.0µin thickness, matching the main part specification.

Recommended Substitution Priority:

1. 8237-6009 (3M): Active status, gold-plated contacts, tin-plated steel shell, ROHS3 compliant, bulk packaging
2. 8237-6003 (3M): Active status, gold-plated contacts, tin-plated steel shell, ROHS3 compliant, threaded flange feature (4-40)
3. 8237-6000 (3M): Active status, gold-plated contacts, tin-plated steel shell, ROHS3 compliant, tray packaging
4. 09664286700 (HARTING): Active status, 2A current rating, unspecified contact finish, bulk packaging
5. 8237-7000 (3M): Obsolete status; use only when other alternatives are unavailable

Frequently Asked Questions (FAQ)

Q: Can the L17DCFRA37PC309 be directly replaced with the 8237-6009 in existing applications?

A: Direct replacement is possible only if the application current requirement does not exceed 1A. The 8237-6009 is rated for 1A maximum, compared to the L17DCFRA37PC309's 3A rating. Additionally, the 8237-6009 is panel-mount configured, whereas the L17DCFRA37PC309 is free-hanging in-line. Mechanical integration must be verified for the panel-mount configuration.

Q: What is the significance of the mounting type difference between the main part and substitutes?

A: The L17DCFRA37PC309 is free-hanging (in-line), meaning it connects directly to ribbon cable without panel integration. All substitute parts are panel-mount, requiring the connector to be mounted through a panel or PCB with appropriate cutouts and fastening hardware. This affects mechanical design, assembly procedures, and spatial requirements.

Q: Why do some substitute parts not specify voltage rating or operating temperature?

A: The provided data indicates that certain manufacturers (HARTING for 09664286700) do not publish these parameters in their standard datasheets. Absence of specification does not indicate incompatibility; however, applications requiring explicit voltage or temperature guarantees should prioritize parts with complete specifications (3M 8237 series).

Q: Is the 09664286700 (HARTING) a suitable substitute despite unspecified contact finish?

A: The 09664286700 maintains the critical D-Sub 37-position configuration, IDC termination, UL94 V-0 compliance, and MSL 1 rating. However, the unspecified contact finish introduces uncertainty regarding contact resistance, corrosion resistance, and wear characteristics compared to the gold-plated specification of the main part and other 3M alternatives. For applications with strict contact resistance or environmental requirements, parts with explicit gold plating (3M 8237 series) are preferred.

Q: Can the 8237-7000 be used in new designs despite its obsolete status?

A: The 8237-7000 is marked obsolete, indicating that 3M has discontinued active production and support. While current inventory exists (1313 pcs), using obsolete parts in new designs creates long-term supply chain risk. The 8237-7000 should be reserved for legacy system maintenance or used only when active-status alternatives are unavailable.

Q: What is the impact of the current rating reduction from 3A to 1A when substituting with 3M parts?

A: The 1A rating of 3M 8237 series parts represents a 67% reduction from the L17DCFRA37PC309's 3A capacity. Applications operating at or near 3A cannot use these substitutes without exceeding the connector's current rating, which may result in excessive heat generation, contact degradation, or connector failure. Circuit redesign, parallel connector configurations, or selection of the HARTING 09664286700 (2A rating) may be necessary.

Q: Are all substitute parts RoHS compliant?

A: Yes. The L17DCFRA37PC309 is RoHS Compliant. All substitute parts carry either RoHS Compliant or ROHS3 Compliant status. ROHS3 represents an updated compliance standard and exceeds the requirements of the original RoHS designation. All parts are suitable for applications requiring RoHS compliance.

Q: What packaging differences exist among the substitute parts?

A: The L17DCFRA37PC309 is supplied in tray packaging. Substitute parts are available in tray (8237-6000, 8237-6003) or bulk (09664286700, 8237-6009, 8237-7000) packaging. Packaging does not affect functional compatibility but may influence inventory management, handling procedures, and unit cost. Bulk packaging typically accommodates higher-volume applications.