Belden AX103178 Fiber Optic Connector - Equivalent & Substitute Parts

Part Overview

The Belden AX103178 is an OPTIMAX LC KEYED MM 50 fiber optic connector classified as Obsolete. This connector is designed for multimode fiber optic applications requiring keyed LC connectivity. Due to its obsolete product status, identifying functionally equivalent active alternatives is essential for ongoing system maintenance, repairs, and new installations where this connector type is specified.

Substiute Parts

AX103178

Belden Inc.In Stock: 985AX103178 Datasheet

Current PartRFQ

AX105238-S1

Belden Inc.In Stock: 812AX105238-S1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part AX105238-S1 is identified as the manufacturer-recommended equivalent for the obsolete AX103178. Substitution eligibility is determined by the following parameters:

• Connector Type & Interface: Both parts are LC keyed fiber optic connectors, maintaining mechanical and optical interface compatibility
• Fiber Mode Classification: Both support multimode fiber applications (MM designation)
• Manufacturer Consistency: Both are manufactured by Belden Inc., ensuring design continuity and quality standards
• Regulatory Compliance: Both maintain identical REACH and ECCN classifications, confirming regulatory equivalence
• Tariff Classification: Identical HTSUS codes confirm functional category alignment

Parameter Comparison

Engineering Selection Recommendations

The AX105238-S1 is the designated manufacturer substitute for the obsolete AX103178. Selection of this substitute is supported by:

• Active Product Status: AX105238-S1 maintains active production status, ensuring long-term availability and supply chain continuity
• Regulatory Alignment: Both parts share identical REACH and ECCN classifications, confirming compliance equivalence for export and procurement purposes
• Manufacturer Authority: Belden Inc. has formally designated AX105238-S1 as the replacement, providing engineering confidence in functional compatibility
• Tariff Consistency: Identical HTSUS classification confirms categorization equivalence for customs and procurement documentation

Frequently Asked Questions (FAQ)

Q: Can AX105238-S1 be used as a direct replacement for AX103178?

A: Yes. AX105238-S1 is the manufacturer-recommended substitute. Both connectors are LC keyed fiber optic connectors designed for multimode fiber applications and share identical regulatory classifications.

Q: What is the difference between the two part descriptions?

A: The AX103178 is designated as OPTIMAX LC KEYED MM 50, while AX105238-S1 is designated as FX BR U LC KEYED SL OM4 1/PK. Both designations refer to LC keyed multimode fiber optic connectors. The descriptive variations reflect product line nomenclature updates; the functional connector interface remains equivalent.

Q: Why is AX103178 listed as Obsolete?

A: Obsolete status indicates that the AX103178 is no longer in active production. AX105238-S1 represents the current active product offering from Belden Inc. for this connector type.

Q: Are there packaging differences between these parts?

A: AX103178 packaging is not specified in available documentation. AX105238-S1 is supplied in Bulk packaging. Verify packaging requirements for your specific procurement needs.

Q: Do both parts have the same regulatory compliance status?

A: Yes. Both parts are REACH Unaffected and classified under ECCN EAR99, with identical HTSUS code 8536.70.0000. Regulatory compliance is equivalent.