Equivalent & Substitute Parts: VCC 1810 Incandescent Lamp

Part Overview

The VCC 1810 is an incandescent lamp rated at 6.3V with a clear round domed top lens and miniature bayonet base. This component is classified as obsolete, making identification of functionally equivalent substitute parts essential for system maintenance and component sourcing. The lamp delivers 1.4 MSCP (Mean Spherical Candle Power) and is designed for applications requiring low-voltage indicator or illumination functions with bayonet-style base mounting.

Key Parameters

Parameter	Value	Significance for Substitution
Voltage Rating	6.3V	Critical electrical parameter; substitute must match or be compatible with circuit voltage
Lens Style	Round with Domed Top	Determines optical output pattern and mechanical fit in fixture
Lens Size	RT-3 1/4	Physical dimension affecting fixture compatibility
Lead Style	Miniature Bayonet	Base type must be compatible with socket design
Type	Incandescent	Technology classification; determines operational characteristics
MSCP	1.4	Light output intensity; affects visibility and application suitability
Color	Clear	Optical transmission characteristic
RoHS Status	ROHS3 Compliant	Environmental and regulatory compliance requirement

Substitute Part Grouping Explanation

Substitution of the VCC 1810 is evaluated based on the following critical parameters:

Voltage Compatibility: The substitute part must operate at 6.3V to ensure safe integration into the existing circuit without modification.

Base Type Compatibility: Both the main part (miniature bayonet) and substitute part (BA9S bayonet - single contact) utilize bayonet-style bases. The BA9S is a recognized bayonet standard that provides mechanical and electrical compatibility with miniature bayonet sockets.

Lens Size and Style: The main part features an RT-3 1/4 round domed top lens. The substitute part specifies T-3.25 / BA9S base configuration, which represents equivalent physical dimensions within standard incandescent lamp sizing conventions.

Light Output: The main part delivers 1.4 MSCP; the substitute delivers 0.65 MSCP. This difference must be evaluated against application requirements for illumination intensity.

Regulatory Compliance: Both parts carry EAR99 ECCN classification and comply with applicable trade regulations. RoHS compliance status is documented for the main part.

Parameter Comparison

Parameter	VCC 1810 (Main Part)	CEC Industries 1866 (Substitute)	Match Status
Voltage Rating	6.3V	6.3V	Match
Type	Incandescent	Incandescent	Match
Color	Clear	Not specified	Assumed compatible
Lens Size	RT-3 1/4	T-3.25	Equivalent
Lead Style	Miniature Bayonet	BA9S Bayonet - Single Contact	Compatible
MSCP	1.4	0.65	Difference noted
ECCN	EAR99	EAR99	Match
Product Status	Obsolete	Active	Substitute is current production

Engineering Selection Recommendations

Voltage and Base Compatibility: The CEC Industries 1866 operates at 6.3V with a BA9S bayonet base, meeting the electrical and mechanical requirements for substitution into fixtures designed for the VCC 1810.

Light Output Consideration: The CEC Industries 1866 produces 0.65 MSCP compared to the VCC 1810's 1.4 MSCP. Applications requiring the original light intensity level must evaluate whether reduced output is acceptable for the intended function.

Product Status: The VCC 1810 is obsolete; the CEC Industries 1866 is in active production. Selection of the active substitute ensures long-term component availability and supply chain continuity.

Regulatory Compliance: Both parts carry EAR99 classification. The VCC 1810 is documented as ROHS3 compliant. Compliance documentation for the CEC Industries 1866 should be verified against specific application requirements.

Frequently Asked Questions (FAQ)

Q: Can the CEC Industries 1866 be directly installed in a fixture designed for the VCC 1810?

A: The CEC Industries 1866 features a BA9S bayonet base, which is mechanically and electrically compatible with miniature bayonet sockets. Direct installation is supported from a base compatibility standpoint. Verify that the fixture socket accepts BA9S bayonet bases.

Q: What is the impact of the lower MSCP rating on the CEC Industries 1866?

A: The CEC Industries 1866 delivers 0.65 MSCP versus the VCC 1810's 1.4 MSCP. This represents approximately 46% of the original light output. Applications sensitive to illumination intensity must evaluate whether this reduction affects performance or visibility requirements.

Q: Are both parts RoHS compliant?

A: The VCC 1810 is documented as ROHS3 compliant. RoHS compliance status for the CEC Industries 1866 is not specified in the provided data and should be confirmed through the manufacturer if regulatory compliance is a requirement.

Q: What does the T-3.25 / BA9S designation mean?

A: T-3.25 refers to the lens diameter in eighths of an inch (T-3.25 = 3.25/8 inch diameter). BA9S is the standardized bayonet base designation. This configuration is equivalent to the RT-3 1/4 miniature bayonet specification of the main part.

Q: Why is the VCC 1810 listed as obsolete?

A: Obsolete status indicates the part is no longer in active production. The CEC Industries 1866 represents an active production alternative with equivalent electrical and mechanical characteristics.

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