PAA.M0.4GL.AC39Z Equivalent & Substitute Parts

Part Overview

The PAA.M0.4GL.AC39Z is a 4-position circular connector plug manufactured by LEMO, featuring male pins with solder cup termination and gold-plated mating contacts. This connector is designed for free-hanging, in-line applications requiring push-pull detent lock fastening. The part is currently active in production with 1102 units in stock. Substitute parts are identified when equivalent electrical and mechanical specifications are required due to inventory constraints, application-specific requirements, or design standardization across product lines.

Key Parameters

Parameter	Value
Connector Type	Plug, Male Pins
Number of Positions	4
Shell Size - Insert	M04
Termination	Solder Cup
Fastening Type	Push-Pull, Detent Lock
Contact Finish - Mating	Gold
Shell Material	Polysulfone (PSU)
Ingress Protection	IP50 - Dust Protected
Current Rating	8A
Operating Temperature	-50°C ~ 150°C
Cable Opening	0.106" ~ 0.154" (2.70mm ~ 3.90mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the PAA.M0.4GL.AC39Z is determined by strict equivalence across the following critical parameters:

Connector Type & Pin Configuration: Plug with male pins, 4-position configuration
Termination Method: Solder cup termination for PCB or cable assembly
Fastening Mechanism: Push-pull detent lock coupling
Contact Material & Finish: Gold-plated mating surface for corrosion resistance and electrical conductivity
Shell Material: Polysulfone (PSU) construction
Ingress Protection: IP50 dust protection rating
Cable Opening Compatibility: 0.106" ~ 0.154" (2.70mm ~ 3.90mm) range
Regulatory Compliance: ROHS3 and REACH compliance status

The substitute part S21MA7-P04MJG0-397S meets these core substitution criteria while maintaining functional equivalence in standard applications.

Parameter Comparison

Parameter	PAA.M0.4GL.AC39Z (LEMO)	S21MA7-P04MJG0-397S (ODU)	Compatibility
Connector Type	Plug, Male Pins	Plug, Male Pins	Equivalent
Number of Positions	4	4	Equivalent
Termination	Solder Cup	Solder Cup	Equivalent
Fastening Type	Push-Pull, Detent Lock	Push-Pull	Compatible
Contact Finish - Mating	Gold	Gold	Equivalent
Shell Material	Polysulfone (PSU)	Polysulfone (PSU)	Equivalent
Ingress Protection	IP50 - Dust Protected	IP50 - Dust Protected	Equivalent
Current Rating (Amps)	8A	10A	Compatible (higher rating)
Operating Temperature	-50°C ~ 150°C	-50°C ~ 120°C	Compatible (narrower range)
Cable Opening	0.106" ~ 0.154" (2.70mm ~ 3.90mm)	0.106" ~ 0.154" (2.70mm ~ 3.90mm)	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)	Equivalent
Insert Material	Polyetheretherketone (PEEK)	Polyetheretherketone (PEEK)	Equivalent

Engineering Selection Recommendations

Both the PAA.M0.4GL.AC39Z and S21MA7-P04MJG0-397S are active production parts with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for industrial, medical, and automotive applications.

The PAA.M0.4GL.AC39Z supports an operating temperature range of -50°C to 150°C with an 8A current rating. The S21MA7-P04MJG0-397S operates within -50°C to 120°C with a 10A current rating. Selection between these parts depends on application-specific thermal and current requirements. Applications requiring sustained operation above 120°C must use the LEMO part. Applications with current demands up to 10A may benefit from the ODU substitute's higher current capacity.

Both connectors feature identical cable opening specifications (0.106" ~ 0.154"), gold-plated contacts, PSU shell construction, and IP50 ingress protection, ensuring mechanical and electrical compatibility in standard connector applications.

Frequently Asked Questions (FAQ)

Q: Can the S21MA7-P04MJG0-397S replace the PAA.M0.4GL.AC39Z in all applications?

A: The S21MA7-P04MJG0-397S is functionally equivalent for applications operating within -50°C to 120°C and requiring up to 10A current. Applications requiring operation above 120°C must use the PAA.M0.4GL.AC39Z.

Q: What are the key mechanical compatibility factors?

A: Both connectors share identical cable opening specifications (0.106" ~ 0.154"), push-pull fastening mechanisms, and free-hanging in-line mounting configurations. Physical mating and cable termination are compatible.

Q: Are there differences in contact material between these parts?

A: Both parts feature gold-plated mating contacts. The PAA.M0.4GL.AC39Z does not specify contact base material in the provided data. The S21MA7-P04MJG0-397S uses brass as the contact base material.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both the PAA.M0.4GL.AC39Z and S21MA7-P04MJG0-397S are ROHS3 compliant and REACH unaffected, meeting current environmental and safety regulations.

Q: What is the difference in fastening type between these connectors?

A: The PAA.M0.4GL.AC39Z specifies push-pull with detent lock fastening. The S21MA7-P04MJG0-397S specifies push-pull fastening. Both employ push-pull coupling mechanisms suitable for standard connector applications.

Q: Are there packaging differences?

A: The PAA.M0.4GL.AC39Z is supplied in standard packaging. The S21MA7-P04MJG0-397S is supplied in bulk packaging. Packaging format does not affect connector functionality or compatibility.

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