PRG.M0.4GL.LC39GZ Equivalent & Substitute Parts

Part Overview

The PRG.M0.4GL.LC39GZ is a 4-position circular connector receptacle manufactured by LEMO, featuring female sockets with solder cup termination. This connector is designed for applications requiring reliable push-pull detent lock fastening in automotive, industrial, medical, and testing equipment environments. The part is currently active in production with 928 units in stock. Equivalent and substitute parts are identified to provide procurement flexibility, ensure supply chain continuity, and support design alternatives where mechanical and electrical parameters align within acceptable tolerances.

Substiute Parts

PRG.M0.4GL.LC39GZ

LEMOIn Stock: 1009PRG.M0.4GL.LC39GZ Datasheet

Current PartRFQ

K21M07-P04LJG0-397S

ODUIn Stock: 993K21M07-P04LJG0-397S Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PRG.M0.4GL.LC39GZ is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Connector type: Receptacle, Female Sockets
• Number of positions: 4
• Termination method: Solder Cup
• Fastening mechanism: Push-Pull, Detent Lock
• Shell material: Polysulfone (PSU)
• Contact finish: Gold
• Ingress protection rating: IP50 - Dust Protected
• Insert material: Polyetheretherketone (PEEK)
• Cable opening range: 0.106" ~ 0.154" (2.70mm ~ 3.90mm)

Allowable Variation Parameters:

• Current rating: Substitute must meet or exceed 8A
• Operating temperature range: Substitute must cover or exceed -50°C ~ 150°C
• Mounting type: Free Hanging (In-Line)
• Product status: Active

The ODU K21M07-P04LJG0-397S qualifies as a substitute based on matching all mandatory parameters. Variations in current rating (10A vs. 8A) and operating temperature upper limit (120°C vs. 150°C) are noted but do not preclude substitution where the substitute's higher current capacity is acceptable and the reduced upper temperature limit does not conflict with application requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the PRG.M0.4GL.LC39GZ and K21M07-P04LJG0-397S maintain active product status and full compliance with ROHS3 and REACH regulations. Selection between these parts should be based on application-specific requirements:

The PRG.M0.4GL.LC39GZ supports the full operating temperature range of -50°C to 150°C and is suitable for applications requiring maximum thermal headroom. The K21M07-P04LJG0-397S operates within -50°C to 120°C and provides a higher current rating of 10A, making it suitable for applications with elevated current demands within the reduced temperature envelope. The ODU substitute includes integrated strain relief in addition to the backshell, providing enhanced mechanical protection during cable routing and installation.

Both connectors share identical electrical and mechanical interfaces, cable opening specifications, and termination methods, ensuring functional interchangeability where thermal and current requirements align.

Frequently Asked Questions (FAQ)

Q: Can the K21M07-P04LJG0-397S replace the PRG.M0.4GL.LC39GZ in all applications?

A: Substitution is valid where the application operating temperature does not exceed 120°C and the 10A current rating meets or exceeds system requirements. If the application requires operation above 120°C, the PRG.M0.4GL.LC39GZ is the appropriate choice.

Q: Are the solder cup terminations compatible between these two connectors?

A: Yes. Both connectors use identical solder cup termination methods and cable opening specifications (0.106" ~ 0.154" / 2.70mm ~ 3.90mm), ensuring direct compatibility in PCB assembly and wiring harness applications.

Q: What is the difference in features between these two connectors?

A: The K21M07-P04LJG0-397S includes integrated strain relief in addition to the backshell, providing enhanced mechanical protection. The PRG.M0.4GL.LC39GZ features a backshell without integrated strain relief.

Q: Do both connectors meet the same regulatory compliance standards?

A: Yes. Both connectors are ROHS3 compliant, REACH unaffected, classified as EAR99, and carry MSL 1 (Unlimited) moisture sensitivity ratings.

Q: What is the difference in current rating between these connectors?

A: The PRG.M0.4GL.LC39GZ is rated for 8A, while the K21M07-P04LJG0-397S is rated for 10A. The higher rating of the substitute provides additional current capacity margin.

Q: Are these connectors suitable for medical applications?

A: Both connectors list medical applications within their specified use cases. The ODU MEDI-SNAP® series designation of the K21M07-P04LJG0-397S indicates specific design consideration for medical equipment environments.