PCA.1S.302.CLLC37 Equivalent & Substitute Parts

Part Overview

The PCA.1S.302.CLLC37 is a 2-position circular connector receptacle manufactured by LEMO, featuring female sockets and male pins with solder cup termination. This component is classified as obsolete, which necessitates identification of active equivalent parts to maintain design continuity and ensure ongoing component availability for new production and field service applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	PCA.1S.302.CLLC37
Manufacturer	LEMO
Category	Circular Connectors
Series	1S
Connector Type	Receptacle, Female Sockets and Male Pins
Number of Positions	2
Shell Size - Insert	302
Termination	Solder Cup
Fastening Type	Push-Pull
Orientation	Keyed
Shell Material	Brass
Shell Finish	Chrome
Contact Finish - Mating	Gold
Current Rating	15A
Operating Temperature Range	-55°C ~ 250°C
Ingress Protection	IP50 - Dust Protected
Material Flammability Rating	UL94 V-0
Shielding	Shielded
Insert Material	Polyetheretherketone (PEEK)
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the PCA.1S.302.CLLC37 is determined by strict equivalence across the following critical parameters:

Series and Shell Size: Both parts must belong to the LEMO 1S series with 302 shell size to ensure mechanical compatibility with existing mating connectors and cable assemblies.
Connector Configuration: Receptacle type with female sockets and male pins is mandatory for functional interchangeability.
Termination Method: Solder cup termination must be maintained for PCB assembly compatibility.
Electrical Ratings: Current rating of 15A and operating temperature range of -55°C ~ 250°C must be preserved.
Material and Finish Specifications: Brass shell with chrome finish and gold-plated mating contacts ensure equivalent performance and environmental resistance.
Compliance Standards: RoHS3 compliance and UL94 V-0 flammability rating must be maintained.

The PCA.1S.302.CLLC42 qualifies as a direct substitute based on these parameters. The primary distinction is product status: PCA.1S.302.CLLC42 is active, whereas PCA.1S.302.CLLC37 is obsolete.

Parameter Comparison

Parameter	PCA.1S.302.CLLC37	PCA.1S.302.CLLC42
Manufacturer	LEMO	LEMO
Series	1S	1S
Connector Type	Receptacle, Female Sockets and Male Pins	Receptacle, Female Sockets and Male Pins
Number of Positions	2	2
Shell Size - Insert	302	302
Termination	Solder Cup	Solder Cup
Fastening Type	Push-Pull	Push-Pull
Orientation	Keyed	Keyed
Shell Material	Brass	Brass
Shell Finish	Chrome	Chrome
Contact Finish - Mating	Gold	Gold
Current Rating	15A	15A
Operating Temperature Range	-55°C ~ 250°C	-55°C ~ 250°C
Ingress Protection	IP50 - Dust Protected	IP50 - Dust Protected
Material Flammability Rating	UL94 V-0	UL94 V-0
Shielding	Shielded	Shielded
Insert Material	Polyetheretherketone (PEEK)	Polyetheretherketone (PEEK)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Cable Opening	0.126" ~ 0.146" (3.20mm ~ 3.70mm)	0.126" ~ 0.165" (3.20mm ~ 4.20mm)
Product Status	Obsolete	Active

Engineering Selection Recommendations

The PCA.1S.302.CLLC42 is the designated substitute for the obsolete PCA.1S.302.CLLC37. Both components maintain identical electrical, mechanical, and material specifications across all critical parameters. The PCA.1S.302.CLLC42 is currently in active production status with confirmed inventory availability, making it suitable for new designs and replacement applications.

The cable opening specification for PCA.1S.302.CLLC42 (0.126" ~ 0.165" / 3.20mm ~ 4.20mm) provides a wider tolerance range compared to PCA.1S.302.CLLC37 (0.126" ~ 0.146" / 3.20mm ~ 3.70mm). This expanded range accommodates a broader selection of cable gauges while maintaining electrical and mechanical integrity. Both parts comply with RoHS3 and UL94 V-0 standards, ensuring regulatory compliance for applications requiring these certifications.

Frequently Asked Questions (FAQ)

Q: Can PCA.1S.302.CLLC42 be used as a direct replacement for PCA.1S.302.CLLC37?

A: Yes. Both components are LEMO 1S series 2-position circular connectors with identical connector type, termination method, electrical ratings, and material specifications. The PCA.1S.302.CLLC42 is the active equivalent of the obsolete PCA.1S.302.CLLC37.

Q: What is the difference between these two part numbers?

A: The primary difference is product status: PCA.1S.302.CLLC37 is obsolete, while PCA.1S.302.CLLC42 is active. Additionally, PCA.1S.302.CLLC42 has a wider cable opening tolerance range (0.126" ~ 0.165" versus 0.126" ~ 0.146"), allowing compatibility with a broader range of cable gauges.

Q: Are the mechanical dimensions identical between these parts?

A: Yes. Both parts share the same shell size (302), connector configuration, and fastening mechanism. The expanded cable opening tolerance in PCA.1S.302.CLLC42 does not affect overall connector dimensions or mating interface compatibility.

Q: Will PCA.1S.302.CLLC42 work with existing mating connectors designed for PCA.1S.302.CLLC37?

A: Yes. Both receptacles are keyed 2-position LEMO 1S series connectors with identical mating interfaces, ensuring full compatibility with corresponding plug connectors.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain RoHS3 compliance and UL94 V-0 flammability rating. Electrical ratings, operating temperature range, and ingress protection specifications are identical.

Q: What packaging is available for PCA.1S.302.CLLC42?

A: PCA.1S.302.CLLC42 is supplied in bulk packaging with confirmed inventory availability.

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