FHG.0B.304.CLAD56Z Equivalent & Substitute Parts

Part Overview

The FHG.0B.304.CLAD56Z is a 4-position circular connector plug manufactured by LEMO, featuring male pins with solder cup termination. This connector is designed for applications requiring shielded, push-pull fastening with gold-plated mating contacts and chrome-finished brass shell. The product is currently obsolete, making identification of compatible substitute parts essential for system maintenance, repair, and legacy equipment support.

Substiute Parts

FHG.0B.304.CLAD56Z

LEMOIn Stock: 1214FHG.0B.304.CLAD56Z Datasheet

Current PartRFQ

W20L0C-P04MFG0-560S

ODUIn Stock: 973W20L0C-P04MFG0-560S Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FHG.0B.304.CLAD56Z is determined by the following critical parameters:

• Connector Type & Pin Configuration: Plug with male pins, 4-position configuration
• Termination Method: Solder cup termination for direct wire attachment
• Fastening Mechanism: Push-pull coupling system
• Mounting Orientation: Free hanging (in-line) or right angle mounting capability
• Contact Interface: Gold-plated mating surface for reliable electrical connection
• Environmental Protection: IP50 dust protection rating
• Mechanical Compatibility: Shell size and insert dimensions must accommodate existing mating receptacles

The substitute part W20L0C-P04MFG0-560S from ODU meets these core functional requirements while maintaining electrical and mechanical compatibility with systems designed for the LEMO FHG.0B.304.CLAD56Z connector.

Parameter Comparison

Engineering Selection Recommendations

The W20L0C-P04MFG0-560S from ODU is an active product suitable for substituting the obsolete FHG.0B.304.CLAD56Z in applications where the following conditions are met:

Compatibility Factors:

• Both connectors share identical core specifications: 4-position male pin plug, solder cup termination, push-pull fastening, and IP50 ingress protection
• Both utilize PEEK insert material and gold-plated mating contacts
• Current rating of 7.5A on the ODU part exceeds the 7A requirement of the LEMO part
• Cable opening ranges overlap within the 5.00mm to 5.60mm window

Operational Constraints:

• The ODU substitute operates within -40°C to 120°C, which is narrower than the LEMO part's -55°C to 250°C range. Applications requiring operation below -40°C or above 120°C are not suitable for this substitute
• The LEMO part is shielded; the ODU part is unshielded. Applications requiring electromagnetic shielding must evaluate whether the unshielded design is acceptable for the intended environment

Compliance & Availability:

• The ODU part is active in production with documented inventory availability
• Both parts carry EAR99 ECCN classification and share identical HTSUS codes

Frequently Asked Questions (FAQ)

Q: Can the W20L0C-P04MFG0-560S directly replace the FHG.0B.304.CLAD56Z in all applications?

A: Direct replacement is possible for applications operating within -40°C to 120°C and where unshielded operation is acceptable. Applications requiring the full -55°C to 250°C temperature range or electromagnetic shielding require evaluation of alternative substitutes or continued sourcing of the obsolete LEMO part.

Q: What is the significance of the shielding difference between these two connectors?

A: The LEMO FHG.0B.304.CLAD56Z includes shielding to attenuate electromagnetic interference. The ODU W20L0C-P04MFG0-560S is unshielded. In environments with high electromagnetic noise or where signal integrity is critical, the unshielded design may introduce performance degradation. System-level testing is necessary to determine acceptability.

Q: Are the solder cup terminations compatible between these two connectors?

A: Both connectors use solder cup termination, allowing identical wire attachment methods. Cable opening specifications overlap (5.00mm to 5.60mm), ensuring compatibility with standard cable gauges used with the original LEMO connector.

Q: What is the current-carrying capacity difference?

A: The ODU part is rated for 7.5A compared to the LEMO part's 7A rating. This 0.5A increase provides additional margin and does not restrict substitution in applications designed for 7A operation.

Q: How do the operating temperature ranges affect substitution decisions?

A: The LEMO part operates from -55°C to 250°C, while the ODU substitute operates from -40°C to 120°C. Applications requiring extreme temperature operation outside the ODU range cannot use this substitute without additional thermal management or alternative sourcing strategies.

Q: Are both connectors RoHS compliant?

A: The LEMO FHG.0B.304.CLAD56Z is ROHS3 compliant. Compliance information for the ODU W20L0C-P04MFG0-560S is not provided in the available technical data and must be verified with the manufacturer for applications requiring RoHS certification.