1090QAX4-12V Incandescent Panel Indicator - Equivalent & Substitute Parts

Part Overview

The 1090QAX4-12V is an incandescent panel indicator manufactured by Visual Communications Company (VCC). This component is a white incandescent indicator with 12V operation, designed for panel-mount applications using quick connect termination. The part is classified as Obsolete, making identification of suitable substitute components necessary for ongoing maintenance, repair, and legacy system support. The 1090QAX4-12V remains in stock with 1,063 units available as new original inventory.

Substiute Parts

1090QAX4-12V

Visual Communications Company - VCCIn Stock: 10991090QAX4-12V Datasheet

Current PartRFQ

1090QC4-12V

Visual Communications Company - VCCIn Stock: 10631090QC4-12V Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1090QAX4-12V is determined by the following critical parameters that must remain constant across equivalent components:

Mandatory Matching Parameters:

• Voltage Rating: 12V
• Lamp Color: White
• Lens Color: White
• Panel Cutout Shape: Round
• Panel Cutout Dimensions: 0.50" (12.70mm)
• Termination Style: Quick Connect - 0.187" (4.7mm)
• Type: Incandescent

Allowable Variation:

• Lens Style: The 1090QAX4-12V features a round lens with domed top. Substitute parts may feature alternative lens geometries (such as flat top) provided all other parameters remain identical.

The 1090QC4-12V qualifies as a direct substitute based on matching all mandatory parameters. The primary distinction is the lens style variation (flat top versus domed top), which does not affect electrical compatibility or mechanical panel mounting.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement Applications:

The 1090QC4-12V serves as a direct electrical and mechanical substitute for the 1090QAX4-12V. Both components share identical voltage ratings, termination specifications, panel cutout dimensions, and RoHS3 compliance status. The lens style difference (domed versus flat top) represents a cosmetic variation that does not affect circuit functionality or panel mounting compatibility.

Compliance Considerations:

Both the main part and substitute maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity ratings. Both components carry EAR99 export classification and identical HTSUS codes (8539.29.3060), indicating regulatory equivalence for procurement and logistics purposes.

Product Status Context:

The 1090QAX4-12V is classified as Obsolete, while the 1090QC4-12V is classified as Not For New Designs. Both designations indicate legacy status. For applications requiring new component qualification, neither part is recommended for new design integration. For maintenance and repair of existing systems, both parts remain functionally equivalent and available from current inventory.

Frequently Asked Questions (FAQ)

Q: Can the 1090QC4-12V replace the 1090QAX4-12V in existing installations?

A: Yes. The 1090QC4-12V is electrically and mechanically compatible with the 1090QAX4-12V. Both components operate at 12V, use identical quick connect termination (0.187" / 4.7mm), and mount through identical 0.50" (12.70mm) round panel cutouts. The lens style difference (flat top versus domed top) does not affect compatibility.

Q: What is the difference between these two parts?

A: The primary difference is lens geometry. The 1090QAX4-12V features a round lens with domed top, while the 1090QC4-12V features a round lens with flat top. All electrical parameters, voltage ratings, termination styles, and panel mounting specifications are identical.

Q: Are both parts still available for purchase?

A: Yes. The 1090QAX4-12V has 1,063 units in stock as new original inventory. The 1090QC4-12V has 1,034 units in stock as new original inventory. Both are available for immediate procurement.

Q: What does "Obsolete" and "Not For New Designs" mean?

A: Obsolete indicates the 1090QAX4-12V is no longer in active production. Not For New Designs indicates the 1090QC4-12V is available for existing system support but should not be specified for new product development. Both designations reflect legacy component status.

Q: Do both parts meet RoHS compliance requirements?

A: Yes. Both the 1090QAX4-12V and 1090QC4-12V are ROHS3 compliant and carry identical MSL Level 1 (Unlimited) ratings, confirming equivalent environmental and regulatory compliance.

Q: Can I use either part interchangeably in my application?

A: Yes, provided your application accommodates the lens style difference. If the domed lens profile of the 1090QAX4-12V is functionally required, the flat top lens of the 1090QC4-12V may not be suitable. If lens style is not a functional requirement, both parts are fully interchangeable.