FGG.1K.304.CLAC45Z Equivalent & Substitute Parts

Part Overview

The FGG.1K.304.CLAC45Z is a 4-position circular connector plug with male pins and solder cup termination, manufactured by LEMO. This connector is designed for applications requiring IP66/IP68 ingress protection with push-pull fastening and shielded construction. The part is currently active in production with 834 units in stock. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design requirements permit equivalent configurations.

Substiute Parts

FGG.1K.304.CLAC45Z

LEMOIn Stock: 938FGG.1K.304.CLAC45Z Datasheet

Current PartRFQ

S21K0C-P04MJG0-450S

ODUIn Stock: 957S21K0C-P04MJG0-450S Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FGG.1K.304.CLAC45Z is determined by the following critical parameters:

• Connector Type & Gender: Must be Plug with Male Pins
• Position Count: Must be 4-position configuration
• Termination Method: Must be Solder Cup
• Fastening Mechanism: Must be Push-Pull
• Shielding: Must be Shielded
• Contact Finish: Must be Gold for mating surfaces
• Shell Material: Must be Brass with appropriate plating
• Ingress Protection: Must meet or exceed IP66/IP68 rating
• Regulatory Compliance: Must maintain ROHS3 compliance and REACH Unaffected status

The substitute part S21K0C-P04MJG0-450S meets these core substitution criteria. Variations in shell size designation, operating temperature range, and current rating are noted as secondary parameters that may affect application suitability.

Parameter Comparison

Engineering Selection Recommendations

Both the FGG.1K.304.CLAC45Z and S21K0C-P04MJG0-450S are active production parts with ROHS3 compliance and REACH Unaffected status, making them suitable for regulated applications.

The FGG.1K.304.CLAC45Z supports a higher current rating of 10A and operates across a wider temperature range (-55°C to 200°C), making it the preferred choice for high-temperature or high-current applications.

The S21K0C-P04MJG0-450S provides an alternative with IP68 ingress protection and includes strain relief features. Its 7.5A current rating and -40°C to 120°C operating range are suitable for industrial, medical, military, and testing equipment applications within these thermal and electrical constraints.

Selection between these parts should be based on specific application requirements for current capacity, operating temperature range, and environmental protection needs.

Frequently Asked Questions (FAQ)

Q: Can the S21K0C-P04MJG0-450S directly replace the FGG.1K.304.CLAC45Z?

A: Both connectors share the same core functional parameters: 4-position, male pins, solder cup termination, push-pull fastening, shielded construction, and gold-plated contacts. However, the substitute has a lower current rating (7.5A vs. 10A) and narrower operating temperature range (-40°C to 120°C vs. -55°C to 200°C). Direct replacement is possible only if the application does not exceed these electrical and thermal limits.

Q: What are the key differences in shell construction?

A: The FGG.1K.304.CLAC45Z features chrome plating on brass, while the S21K0C-P04MJG0-450S uses chrome over nickel plating. Both provide corrosion resistance and are suitable for shielded applications. The nickel underplate in the substitute may offer enhanced durability in certain corrosive environments.

Q: Are both parts suitable for the same environmental conditions?

A: Both connectors meet IP68 waterproof and dust-tight specifications. The FGG.1K.304.CLAC45Z additionally specifies IP66 compliance. Both are suitable for sealed, submerged, or harsh environmental applications. Temperature operating ranges differ and must be evaluated against specific application requirements.

Q: Do both connectors use the same insert material?

A: Yes, both use polyetheretherketone (PEEK) for the insert material, ensuring consistent dielectric properties and mechanical stability across temperature ranges within their respective operating limits.

Q: What packaging options are available?

A: Both parts are supplied in bulk packaging. The FGG.1K.304.CLAC45Z has 834 units in stock, while the S21K0C-P04MJG0-450S has 865 units in stock.