40RF-JMCS-G-1B-TF(N)(LF)(SN) Equivalent & Substitute Parts

Part Overview

The 40RF-JMCS-G-1B-TF(N)(LF)(SN) is a 40-position rectangular connector receptacle manufactured by JST Sales America Inc. This surface mount component features center strip contacts with gold plating and is designed for high-density interconnect applications. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing production support, design updates, and inventory management.

Substiute Parts

40RF-JMCS-G-1B-TF(N)(LF)(SN)

JST Sales America Inc.In Stock: 113140RF-JMCS-G-1B-TF(N)(LF)(SN) Datasheet

Current PartRFQ

DF17(3.0)-40DS-0.5V(57)

Hirose Electric Co LtdIn Stock: 2083DF17(3.0)-40DS-0.5V(57) Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 40RF-JMCS-G-1B-TF(N)(LF)(SN) is determined by strict alignment of the following parameters:

• Connector Type: Receptacle with center strip contacts
• Position Count: 40 positions
• Pitch: 0.020" (0.50mm)
• Row Configuration: 2 rows
• Mounting Technology: Surface mount
• Contact Material: Gold plating
• Mechanical Features: Board guide and solder retention capability
• Regulatory Compliance: ROHS3 compliance and MSL 1 rating

The DF17(3.0)-40DS-0.5V(57) from Hirose Electric Co Ltd meets all these criteria and qualifies as a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The DF17(3.0)-40DS-0.5V(57) is the qualified substitute for the obsolete 40RF-JMCS-G-1B-TF(N)(LF)(SN). Both components share identical electrical and mechanical specifications across all critical parameters: 40-position configuration, 0.50mm pitch, dual-row layout, surface mount technology, and gold contact finish.

The substitute part carries active product status from Hirose Electric Co Ltd, ensuring ongoing availability and manufacturing support. Both components maintain ROHS3 compliance and MSL 1 rating, confirming equivalent environmental and handling requirements. The height above board differential of 0.008" (0.20mm) between the two parts is within typical PCB design tolerances for this connector class.

Frequently Asked Questions (FAQ)

Q: Can the DF17(3.0)-40DS-0.5V(57) be used as a direct replacement in existing PCB designs?

A: Yes. The substitute part matches all critical functional parameters: 40 positions, 0.50mm pitch, 2-row configuration, surface mount mounting, and gold plating. The 0.008" height difference is negligible for standard PCB applications.

Q: What is the difference in packaging between these parts?

A: The JST part does not specify packaging format in the provided data. The Hirose substitute is supplied in Tape & Reel (TR) format, which is standard for high-volume surface mount production.

Q: Are both parts compliant with the same regulatory standards?

A: Yes. Both components are ROHS3 compliant, carry EAR99 export classification, and share the same HTSUS commodity code (8536.69.4040). Both maintain MSL 1 (Unlimited) moisture sensitivity rating.

Q: Why is the JST part listed as obsolete?

A: Product obsolescence is determined by the manufacturer. The Hirose equivalent remains in active production, providing a viable path for continued component sourcing and design continuity.

Q: Are there any mechanical compatibility concerns with the height difference?

A: The 0.20mm height variance is within standard PCB design margins for this connector category and does not affect mating or electrical performance.