PHG.1K.304.CLLC55Z Equivalent & Substitute Parts

Part Overview

The PHG.1K.304.CLLC55Z is a 4-position circular connector receptacle manufactured by LEMO, featuring female sockets with solder cup termination. This connector is designed for applications requiring push-pull fastening, shielded construction, and waterproof ingress protection. The part is currently active in production with 754 units in stock. Equivalent and substitute parts are identified to provide procurement flexibility, inventory management options, and alternative sourcing when the primary part becomes unavailable.

Substiute Parts

PHG.1K.304.CLLC55Z

LEMOIn Stock: 796PHG.1K.304.CLLC55Z Datasheet

Current PartRFQ

K21K0C-P04LJG0-550S

ODUIn Stock: 1071K21K0C-P04LJG0-550S Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PHG.1K.304.CLLC55Z is determined by the following critical parameters:

• Connector Type & Configuration: Receptacle with female sockets, 4-position arrangement
• Termination Method: Solder cup termination for direct PCB or cable assembly
• Fastening Mechanism: Push-pull coupling system
• Electrical Performance: Current rating and contact finish (gold plating for mating surfaces)
• Environmental Protection: Shielded construction with waterproof ingress protection (IP68 minimum)
• Material Compatibility: PEEK insert material and brass shell construction
• Regulatory Compliance: ROHS3 compliance and REACH unaffected status

The substitute part K21K0C-P04LJG0-550S (ODU MINI-SNAP® K series) meets the core functional requirements of a 4-position shielded circular connector receptacle with solder cup termination and push-pull fastening. Both parts are ROHS3 compliant and feature PEEK inserts with gold-plated mating contacts.

Parameter Comparison

Engineering Selection Recommendations

Both the PHG.1K.304.CLLC55Z and K21K0C-P04LJG0-550S are active production parts with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements.

The PHG.1K.304.CLLC55Z provides a higher current rating (10A versus 7.5A) and an extended operating temperature range (-55°C to 200°C versus -40°C to 120°C). Selection between these parts should be based on the specific application requirements for current capacity and thermal operating conditions.

The K21K0C-P04LJG0-550S offers additional features including strain relief and is specified for industrial, medical, military, and testing equipment applications. Both connectors maintain compatible cable opening specifications and identical contact finish specifications.

Frequently Asked Questions (FAQ)

Q: Can the K21K0C-P04LJG0-550S directly replace the PHG.1K.304.CLLC55Z in all applications?

A: Direct replacement is possible for applications operating within the K21K0C-P04LJG0-550S specifications: maximum 7.5A current, operating temperature range -40°C to 120°C, and IP68 ingress protection. Applications requiring the higher current rating or extended temperature range of the PHG.1K.304.CLLC55Z require engineering evaluation.

Q: What are the key compatibility factors between these two connectors?

A: Both connectors share identical core specifications: 4-position configuration, female socket receptacle type, solder cup termination, push-pull fastening, shielded construction, PEEK inserts, and gold-plated mating contacts. Cable opening ranges are compatible within the specified tolerances.

Q: Are there differences in shell finish that affect performance?

A: The PHG.1K.304.CLLC55Z features chrome plating on brass, while the K21K0C-P04LJG0-550S features chrome over nickel plating. Both finishes provide corrosion resistance and are suitable for the specified ingress protection ratings.

Q: What is the significance of the operating temperature range difference?

A: The PHG.1K.304.CLLC55Z operates from -55°C to 200°C, while the K21K0C-P04LJG0-550S operates from -40°C to 120°C. Applications requiring operation below -40°C or above 120°C must use the PHG.1K.304.CLLC55Z.

Q: How do the current ratings affect connector selection?

A: The PHG.1K.304.CLLC55Z is rated for 10A maximum current, while the K21K0C-P04LJG0-550S is rated for 7.5A. Applications requiring current levels between 7.5A and 10A must use the PHG.1K.304.CLLC55Z.

Q: Are both connectors suitable for medical and military applications?

A: Both connectors are ROHS3 compliant and REACH unaffected. The K21K0C-P04LJG0-550S is explicitly specified for medical and military applications. Application-specific qualification requirements should be confirmed with end-use specifications.