Equivalent & Substitute Parts for 1051QC4 Neon Panel Indicator

Part Overview

The 1051QC4 is a neon panel indicator manufactured by Visual Communications Company (VCC), designed for AC applications in the 208V to 250V range. This component features a white neon lamp with a round lens and flat top design, utilizing quick connect termination at 0.187" (4.7mm). The part is classified as "Not For New Designs," indicating it has reached end-of-life status. This obsolescence necessitates identification of functionally equivalent alternatives for ongoing maintenance and new application development.

Substiute Parts

1051QC4

Visual Communications Company - VCCIn Stock: 10681051QC4 Datasheet

Current PartRFQ

6561009304F

DialightIn Stock: 11146561009304F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The 6561009304F from Dialight qualifies as a functional substitute for the 1051QC4 based on the following substitution criteria:

Mechanical Compatibility:

• Both parts feature identical panel cutout dimensions of 0.50" (12.70mm) in round configuration
• Both utilize round lens design with flat top styling
• Both employ quick connect termination, ensuring direct replacement capability in existing panel assemblies

Electrical Compatibility:

• The 6561009304F operates at 230V AC, which falls within the 208V to 250V operating envelope of the 1051QC4
• Both parts are rated for AC applications
• The substitute part draws 3mA at rated voltage, providing defined current characteristics absent in the original specification

Visual Consistency:

• Both parts feature white lamp color and white lens color
• Both maintain clear lens transparency for consistent visual indication

Regulatory Compliance:

• Both parts maintain ROHS3 compliance
• Both are REACH unaffected
• Both share identical ECCN classification (EAR99)

Key Difference - Technology Migration: The 6561009304F represents a technology transition from neon to LED illumination. This substitution is valid where LED-based indication is functionally acceptable for the application.

Parameter Comparison

Engineering Selection Recommendations

For Maintenance and Repair Applications: The 6561009304F is suitable for direct replacement of 1051QC4 units in existing installations. The mechanical interface is identical, and the electrical operating range encompasses the original specification. The substitute part is actively manufactured and supported, eliminating supply chain risk associated with the obsolete 1051QC4.

For New Design Applications: Since the 1051QC4 carries "Not For New Designs" status, the 6561009304F should be selected for all new panel indicator implementations requiring this form factor and voltage range. The active product status ensures long-term availability and technical support.

Compliance Considerations: Both parts maintain equivalent regulatory compliance profiles. The ROHS3 compliance, REACH unaffected status, and EAR99 ECCN classification are identical, eliminating compliance-related substitution barriers.

Technology Transition: The shift from neon to LED technology in the 6561009304F provides operational advantages including lower power consumption (3mA versus unspecified neon current) and extended service life. This transition is functionally transparent for panel indication applications where white light output is the primary requirement.

Frequently Asked Questions (FAQ)

Q: Can the 6561009304F directly replace the 1051QC4 without panel modification?

A: Yes. Both parts feature identical panel cutout dimensions (0.50" / 12.70mm round) and quick connect termination. No mechanical modification is required for direct substitution in existing panel assemblies.

Q: Is the 230V rating of the 6561009304F compatible with 208V to 250V applications?

A: Yes. The 230V rating of the substitute part falls within the 208V to 250V operating envelope of the original 1051QC4. The substitute is suitable for all applications within this voltage range.

Q: What is the primary difference between these two parts?

A: The 1051QC4 uses neon illumination technology, while the 6561009304F uses LED technology. Both produce white light output and are mechanically and electrically compatible. The LED substitute offers lower power consumption at 3mA.

Q: Are there any regulatory or compliance issues with substitution?

A: No. Both parts maintain identical ROHS3 compliance, REACH unaffected status, and EAR99 ECCN classification. Substitution does not introduce compliance complications.

Q: Why is the 1051QC4 marked "Not For New Designs"?

A: This designation indicates the part has reached end-of-life status and is no longer recommended for new product development. The 6561009304F, with active product status, is the appropriate selection for new applications.

Q: What is the packaging difference between these parts?

A: The 1051QC4 is supplied in bag packaging, while the 6561009304F is supplied in bulk packaging. This difference does not affect functional compatibility but may influence procurement and inventory management practices.

Q: Can the 6561009304F be used in applications originally designed for neon indicators?

A: Yes, provided the application requires only white light indication at the specified voltage and current levels. The LED substitute provides equivalent visual output with improved efficiency and reliability characteristics.