PRA.M0.4GL.LC39A Equivalent & Substitute Parts

Part Overview

The PRA.M0.4GL.LC39A is a 4-position circular connector receptacle manufactured by LEMO, featuring female sockets with solder cup termination and gold-plated contacts. 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 818 units in stock. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design requirements permit equivalent connector specifications.

Substiute Parts

PRA.M0.4GL.LC39A

LEMOIn Stock: 875PRA.M0.4GL.LC39A Datasheet

Current PartRFQ

K11MA7-P04LJG0-3960

ODUIn Stock: 777K11MA7-P04LJG0-3960 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part K11MA7-P04LJG0-3960 (ODU MEDI-SNAP®) is qualified as an equivalent based on the following critical parameters:

Matching Parameters:

• Connector type: Receptacle, Female Sockets
• Number of positions: 4
• Termination method: Solder Cup
• Fastening type: Push-Pull, Detent Lock
• Contact finish: Gold
• Shell material: Polysulfone (PSU)
• Insert material: Polyetheretherketone (PEEK)
• Ingress protection: IP50 - Dust Protected
• Cable opening: 0.106" ~ 0.154" (2.70mm ~ 3.90mm)
• Mounting type: Free Hanging (In-Line)
• Orientation: A
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity: MSL 1 (Unlimited)

Allowable Variations:

• Current rating: 10A (substitute) vs. 8A (main part) — higher rating is acceptable
• Operating temperature upper limit: 120°C (substitute) vs. 150°C (main part) — acceptable for applications not requiring full temperature range
• Shell size designation: 1 (substitute) vs. M04 (main part) — equivalent mechanical interface
• Series designation: ODU MEDI-SNAP® vs. 1P — different manufacturer series with compatible specifications

Parameter Comparison

Engineering Selection Recommendations

Both the PRA.M0.4GL.LC39A and K11MA7-P04LJG0-3960 are active production parts with ROHS3 compliance and REACH unaffected status, making them suitable for regulated applications in industrial, medical, and automotive sectors.

The PRA.M0.4GL.LC39A maintains a higher operating temperature ceiling of 150°C, which is required for applications with elevated thermal demands. The K11MA7-P04LJG0-3960 operates to 120°C maximum and provides a higher current rating of 10A compared to the 8A rating of the main part.

Selection between these parts should be based on specific application requirements: choose the PRA.M0.4GL.LC39A when the full -50°C to 150°C temperature range is necessary; select the K11MA7-P04LJG0-3960 when applications operate within the -50°C to 120°C range and higher current capacity is beneficial or when LEMO part availability is constrained.

Frequently Asked Questions (FAQ)

Q: Can the K11MA7-P04LJG0-3960 be used as a direct replacement for the PRA.M0.4GL.LC39A?

A: Yes, for applications operating within the -50°C to 120°C temperature range. Both connectors share identical mechanical interfaces, electrical contact specifications, and fastening mechanisms. Verify that your application does not require operation above 120°C before substitution.

Q: What are the key compatibility criteria for these circular connectors?

A: The critical parameters are: 4-position configuration, female socket receptacle type, solder cup termination, push-pull detent lock fastening, gold-plated contacts, and IP50 ingress protection. Both parts meet all these specifications.

Q: Does the higher current rating of the K11MA7-P04LJG0-3960 affect compatibility?

A: No. A higher current rating indicates the substitute part can safely handle equal or greater current loads. This is a compatible variation that does not restrict application use.

Q: Are there packaging differences between these parts?

A: The PRA.M0.4GL.LC39A is supplied in standard packaging, while the K11MA7-P04LJG0-3960 is supplied in bulk packaging. Verify bulk packaging requirements align with your procurement and assembly processes.

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 compliant, REACH unaffected, and carry EAR99 ECCN classification. Both are suitable for medical, industrial, and automotive applications requiring regulatory compliance.

Q: How do the shell size designations M04 and 1 relate to mechanical compatibility?

A: These designations represent equivalent mechanical interfaces from different manufacturers. The M04 designation (LEMO) and 1 designation (ODU MEDI-SNAP®) specify the same physical connector size and mating geometry, ensuring mechanical interchangeability.