PAA.M0.4GL.AC52Z Equivalent & Substitute Parts

Part Overview

The PAA.M0.4GL.AC52Z is a 4-position circular connector plug with male pins and solder cup termination, manufactured by LEMO. This connector is designed for applications requiring reliable circular connection interfaces in automotive, industrial, medical, and testing equipment environments. The part is currently active in production with 1115 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 configurations.

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
Shell Material	Polysulfone (PSU)
Contact Finish - Mating	Gold
Current Rating	8A
Operating Temperature Range	-50°C ~ 150°C
Ingress Protection	IP50 - Dust Protected
Cable Opening	0.157" ~ 0.205" (4.00mm ~ 5.20mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

The substitute part S21MA7-P04MJG0-527S is classified as an equivalent alternative based on the following critical parameters that determine substitution compatibility:

Matching Parameters:

Connector type: Plug with male pins
Number of positions: 4
Termination method: Solder cup
Shell material: Polysulfone (PSU)
Contact finish: Gold
Ingress protection: IP50 - Dust Protected
Cable opening range: 0.157" ~ 0.205" (4.00mm ~ 5.20mm)
Insert material: Polyetheretherketone (PEEK)
Mounting type: Free Hanging (In-Line)
Orientation: A
RoHS compliance: ROHS3 Compliant

Differing Parameters:

Current rating: PAA.M0.4GL.AC52Z rated at 8A; S21MA7-P04MJG0-527S rated at 10A
Operating temperature range: PAA.M0.4GL.AC52Z operates -50°C ~ 150°C; S21MA7-P04MJG0-527S operates -50°C ~ 120°C
Fastening type: PAA.M0.4GL.AC52Z uses Push-Pull with Detent Lock; S21MA7-P04MJG0-527S uses Push-Pull
Series designation: PAA.M0 versus ODU MEDI-SNAP®
Backshell features: S21MA7-P04MJG0-527S includes strain relief

Parameter Comparison

Parameter	PAA.M0.4GL.AC52Z (LEMO)	S21MA7-P04MJG0-527S (ODU)
Connector Type	Plug, Male Pins	Plug, Male Pins
Number of Positions	4	4
Termination	Solder Cup	Solder Cup
Shell Material	Polysulfone (PSU)	Polysulfone (PSU)
Contact Finish - Mating	Gold	Gold
Current Rating (Amps)	8A	10A
Operating Temperature Range	-50°C ~ 150°C	-50°C ~ 120°C
Ingress Protection	IP50 - Dust Protected	IP50 - Dust Protected
Cable Opening	0.157" ~ 0.205" (4.00mm ~ 5.20mm)	0.157" ~ 0.205" (4.00mm ~ 5.20mm)
Insert Material	Polyetheretherketone (PEEK)	Polyetheretherketone (PEEK)
Fastening Type	Push-Pull, Detent Lock	Push-Pull
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active

Engineering Selection Recommendations

Both the PAA.M0.4GL.AC52Z and S21MA7-P04MJG0-527S are active production parts with ROHS3 compliance and REACH unaffected status, making them suitable for regulated applications in industrial, medical, and automotive environments.

The PAA.M0.4GL.AC52Z maintains a higher maximum operating temperature of 150°C compared to the substitute part's 120°C maximum. Applications requiring sustained operation above 120°C must use the LEMO part.

The S21MA7-P04MJG0-527S provides a higher current rating of 10A versus the 8A rating of the LEMO connector. Applications requiring current capacity above 8A must use the ODU part.

Both connectors share identical mechanical interfaces, shell materials, contact finishes, and ingress protection ratings, supporting direct substitution in applications where the operating temperature and current requirements fall within the overlapping specification range of -50°C to 120°C and up to 8A.

Frequently Asked Questions (FAQ)

Q: Can S21MA7-P04MJG0-527S replace PAA.M0.4GL.AC52Z in all applications?

A: Substitution is valid only when the application operates within -50°C to 120°C and requires maximum current of 8A. Applications exceeding 120°C operating temperature or requiring current above 8A must use the original PAA.M0.4GL.AC52Z specification.

Q: What are the mechanical compatibility requirements for substitution?

A: Both connectors share identical 4-position configurations, M04 shell size, solder cup termination, cable opening ranges of 0.157" to 0.205" (4.00mm to 5.20mm), and PEEK insert material. Mechanical mating is compatible.

Q: Are there differences in fastening mechanisms between these parts?

A: The PAA.M0.4GL.AC52Z includes a detent lock feature in addition to push-pull fastening, while the S21MA7-P04MJG0-527S uses push-pull fastening only. Applications requiring detent lock functionality must use the LEMO part.

Q: Do both parts meet the same regulatory requirements?

A: Both parts are ROHS3 compliant and REACH unaffected, with identical ECCN (EAR99) and HTSUS (8536.69.4020) classifications, supporting use in regulated industries.

Q: What is the difference in contact material between these connectors?

A: The PAA.M0.4GL.AC52Z does not specify contact material in the provided data. The S21MA7-P04MJG0-527S uses brass contact material. Both feature gold mating contact finish.

Q: How do the backshell features differ?

A: The PAA.M0.4GL.AC52Z includes a backshell. The S21MA7-P04MJG0-527S includes both backshell and strain relief features.

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