PRA.M0.4GL.LC39J Equivalent & Substitute Parts

Part Overview

The PRA.M0.4GL.LC39J 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 700 units in stock. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design requirements permit equivalent configurations.

Substiute Parts

PRA.M0.4GL.LC39J

LEMOIn Stock: 745PRA.M0.4GL.LC39J Datasheet

Current PartRFQ

K11MA7-P04LJG0-3940

ODUIn Stock: 875K11MA7-P04LJG0-3940 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PRA.M0.4GL.LC39J is determined by strict alignment of the following critical parameters:

• Connector Type & Configuration: Receptacle with female sockets (4-position)
• Termination Method: Solder cup
• Fastening Mechanism: Push-pull detent lock
• Mounting Style: Free hanging (in-line)
• Contact Finish: Gold plating on mating surfaces
• Shell & Insert Materials: Polysulfone (PSU) shell with PEEK insert
• Ingress Protection: IP50 dust protection
• Compliance: ROHS3 compliant

The substitute part K11MA7-P04LJG0-3940 (ODU MEDI-SNAP®) meets all critical substitution criteria. Both parts share identical connector architecture, termination approach, fastening type, and material composition. Differences in current rating (10A vs. 8A) and maximum operating temperature (120°C vs. 150°C) represent performance enhancements in the substitute part.

Parameter Comparison

Engineering Selection Recommendations

Both the PRA.M0.4GL.LC39J and K11MA7-P04LJG0-3940 are active production parts with ROHS3 compliance and REACH unaffected status, making either suitable for new designs and ongoing production support.

Selection between these parts should be based on application-specific requirements:

• PRA.M0.4GL.LC39J is appropriate for applications requiring the extended operating temperature range up to 150°C, particularly in high-temperature industrial or automotive environments.

• K11MA7-P04LJG0-3940 is appropriate for applications where the higher current rating of 10A provides design margin or where the ODU MEDI-SNAP® series integration is preferred. The maximum operating temperature of 120°C is suitable for standard industrial and medical applications.

Both parts maintain identical mechanical and electrical interfaces, ensuring direct substitution capability in connector mating and solder cup termination.

Frequently Asked Questions (FAQ)

Q: Can K11MA7-P04LJG0-3940 directly replace PRA.M0.4GL.LC39J in existing designs?

A: Yes. Both connectors share identical connector type, position count, termination method, fastening mechanism, and material composition. Direct mechanical and electrical substitution is supported.

Q: What are the key differences between these two parts?

A: The substitute part (K11MA7-P04LJG0-3940) has a higher current rating (10A vs. 8A), while the main part (PRA.M0.4GL.LC39J) supports a higher maximum operating temperature (150°C vs. 120°C). All other parameters are identical.

Q: Which part should be selected for high-temperature applications?

A: The PRA.M0.4GL.LC39J is specified for operating temperatures up to 150°C and is the appropriate choice for applications exceeding 120°C.

Q: Are both parts compliant with environmental and regulatory standards?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the cable opening specification for both connectors?

A: Both parts accept cable diameters in the range of 0.106" to 0.154" (2.70mm to 3.90mm), ensuring compatibility with standard cable sizes.

Q: Do both parts use the same solder cup termination method?

A: Yes. Both connectors use solder cup termination, allowing identical PCB assembly and rework procedures.