FHG.0B.305.CLAD31Z Equivalent & Substitute Parts

Part Overview

The FHG.0B.305.CLAD31Z is a 5-position circular connector plug manufactured by LEMO, featuring male pins with solder cup termination and push-pull fastening. This connector is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and component procurement.

The connector is designed for applications requiring shielded, gold-plated contacts with robust environmental protection (IP50) and extended temperature operation from -55°C to 250°C. Due to its obsolete status, sourcing direct replacements requires evaluation of mechanically and electrically compatible alternatives that maintain system performance requirements.

Substiute Parts

FHG.0B.305.CLAD31Z

LEMOIn Stock: 759FHG.0B.305.CLAD31Z Datasheet

Current PartRFQ

W20L0C-P05MFG0-320S

ODUIn Stock: 1074W20L0C-P05MFG0-320S Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FHG.0B.305.CLAD31Z is determined by the following critical parameters:

Mandatory Matching Parameters:

• Connector type: Plug, Male Pins
• Number of positions: 5
• Termination method: Solder Cup
• Fastening mechanism: Push-Pull
• Mounting configuration: Free Hanging (In-Line), Right Angle
• Insert material: Polyetheretherketone (PEEK)
• Contact finish: Gold plating on mating surfaces

Allowable Variation Parameters:

• Shell size designation (305 vs. alternative sizing schemes)
• Shielding configuration (shielded vs. unshielded, based on application requirements)
• Current rating (substitute must meet or exceed 6.5A minimum)
• Operating temperature range (substitute must cover application-specific temperature requirements)
• Shell and backshell material composition (brass, copper alloy, or equivalent)

The ODU W20L0C-P05MFG0-320S qualifies as a substitute based on matching connector type, pin count, termination, fastening, and mounting configuration. However, differences in shielding, temperature range, and current rating require application-level evaluation.

Parameter Comparison

Engineering Selection Recommendations

The W20L0C-P05MFG0-320S from ODU represents a functionally compatible alternative to the obsolete FHG.0B.305.CLAD31Z based on core connector architecture and electrical interface parameters.

Compatibility Assessment:

The substitute maintains mechanical and electrical compatibility for the primary connector interface: 5-position male pin configuration with solder cup termination and push-pull coupling. Both connectors provide equivalent contact finish (gold plating), ingress protection (IP50), and insert material (PEEK).

Critical Differences Requiring Application Evaluation:

The ODU connector operates within a reduced temperature range (-40°C to 120°C) compared to the LEMO original (-55°C to 250°C). Applications requiring operation below -40°C or above 120°C cannot use this substitute without thermal performance verification.

The ODU connector is unshielded, whereas the LEMO original is shielded. Applications requiring electromagnetic interference mitigation must evaluate whether unshielded operation is acceptable or if additional shielding measures are necessary.

The ODU connector provides higher current capacity (7.5A vs. 6.5A), meeting or exceeding the original specification.

Compliance Status:

The ODU W20L0C-P05MFG0-320S is active product status, ensuring ongoing availability and supply chain stability. The LEMO original is obsolete, necessitating transition to alternative sources. Both connectors carry ECCN EAR99 classification and HTSUS code 8536.69.4020.

Frequently Asked Questions (FAQ)

Q: Can the W20L0C-P05MFG0-320S directly replace the FHG.0B.305.CLAD31Z in all applications?

A: Direct replacement is possible only when application requirements align with the ODU connector's specifications. The reduced operating temperature range (-40°C to 120°C vs. -55°C to 250°C) and unshielded design must be evaluated against system requirements. Current capacity is adequate (7.5A exceeds the 6.5A original specification).

Q: What is the impact of the unshielded design on system performance?

A: The ODU connector lacks the shielding present in the LEMO original. Applications sensitive to electromagnetic interference or operating in high-noise environments must assess whether unshielded operation introduces signal integrity risks. If shielding is required, alternative shielded connectors or external shielding measures may be necessary.

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

A: Both connectors use solder cup termination with identical contact finish (gold plating) and insert material (PEEK). Solder joint procedures and wire gauge compatibility should be verified against the specific connector datasheets, but the termination method is functionally equivalent.

Q: What is the temperature operating range limitation?

A: The ODU connector operates from -40°C to 120°C, compared to the LEMO original's -55°C to 250°C range. Applications requiring operation outside the ODU range require alternative connector selection. High-temperature applications (above 120°C) cannot use this substitute.

Q: Is the push-pull fastening mechanism identical?

A: Both connectors use push-pull fastening with equivalent mechanical operation. Mating and unmating procedures are functionally compatible.

Q: What packaging considerations apply to the substitute?

A: The ODU connector is supplied in bulk packaging, whereas the LEMO original packaging is not specified. Procurement quantities and handling procedures should be confirmed with the supplier.