FGA.1B.304.CLAD52Z Equivalent & Substitute Parts

Part Overview

The FGA.1B.304.CLAD52Z is a 4-position circular connector plug with male pins and solder cup termination, manufactured by LEMO. This connector is classified as an active product with full inventory availability (972 pcs in stock). The part features a shielded design with push-pull fastening, chrome-plated brass shell, and gold-plated mating contacts rated for 10A continuous current operation across an extended temperature range of -55°C to 250°C.

Equivalent and substitute parts are identified to provide procurement flexibility, support supply chain continuity, and accommodate specific application requirements where the primary part may be unavailable or where alternative specifications better suit particular operational constraints.

Substiute Parts

FGA.1B.304.CLAD52Z

LEMOIn Stock: 1078FGA.1B.304.CLAD52Z Datasheet

Current PartRFQ

S21LAC-P04MJG0-520S

ODUIn Stock: 1053S21LAC-P04MJG0-520S Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The S21LAC-P04MJG0-520S (ODU MINI-SNAP® L series) qualifies as a substitute based on the following alignment of critical parameters:

Matching Parameters:

• Connector type: Plug with male pins
• Position count: 4
• Termination: Solder cup
• Fastening mechanism: Push-pull
• Shell material: Brass with chrome plating
• Contact finish: Gold-plated mating surfaces
• Shielding: Shielded configuration
• Insert material: PEEK
• Ingress protection: IP50
• Regulatory compliance: ROHS3 compliant, REACH unaffected

Operational Constraints: The substitute part operates within a reduced temperature range (-40°C to 120°C) and carries a lower current rating (7.5A versus 10A). These differences establish specific application boundaries where substitution is valid. The substitute is suitable for applications operating within its specified thermal and electrical limits.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (FGA.1B.304.CLAD52Z): Select the LEMO FGA.1B.304.CLAD52Z when applications require operation across the extended temperature range of -55°C to 250°C or demand the full 10A current rating. This part maintains active product status with established supply availability and meets all specified regulatory requirements (ROHS3, REACH unaffected).

Substitute Part Selection (S21LAC-P04MJG0-520S): The ODU S21LAC-P04MJG0-520S serves as a functional substitute for applications constrained to the -40°C to 120°C operating window with maximum current requirements not exceeding 7.5A. This substitute maintains equivalent mechanical interface compatibility, identical connector topology, and equivalent regulatory compliance status. The substitute includes integrated strain relief features not specified in the primary part.

Both parts satisfy ROHS3 compliance and REACH unaffected status, confirming suitability for regulated markets and applications with environmental compliance requirements.

Frequently Asked Questions (FAQ)

Q: What determines compatibility between the FGA.1B.304.CLAD52Z and S21LAC-P04MJG0-520S?

A: Compatibility is established through matching connector topology (4-position plug, male pins), identical termination method (solder cup), equivalent fastening mechanism (push-pull), and matching shell and contact materials with gold plating. Both parts feature shielded PEEK inserts and IP50 ingress protection.

Q: Can the S21LAC-P04MJG0-520S replace the FGA.1B.304.CLAD52Z in all applications?

A: No. The substitute is limited to applications operating within -40°C to 120°C and requiring maximum 7.5A current. Applications requiring the full -55°C to 250°C range or 10A rating must use the primary part.

Q: Are there mechanical interface differences between these connectors?

A: Both connectors use identical push-pull fastening and 4-position solder cup termination. Cable opening specifications are nearly identical (4.20-5.20mm for primary part; 4.00-5.20mm for substitute), ensuring compatible cable jacket sizing in most applications.

Q: What is the significance of the shell finish difference (Chrome versus Chrome over Nickel)?

A: The primary part uses chrome plating directly on brass. The substitute uses chrome plating over a nickel intermediate layer. Both finishes provide equivalent corrosion resistance and electrical performance for the specified applications.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both the FGA.1B.304.CLAD52Z and S21LAC-P04MJG0-520S are ROHS3 compliant and REACH unaffected, confirming equivalence for regulated procurement and environmental compliance requirements.

Q: What packaging considerations apply to these parts?

A: Both parts are supplied in bulk packaging. The primary part has 972 units in stock; the substitute has 1037 units available. No special moisture sensitivity precautions are required for either part (MSL 1 for primary; not applicable for substitute).