Equivalent & Substitute Parts: VCC 47 Incandescent Lamp RT-3.25 Miniature Bayonet 6.3V

Part Overview

The VCC 47 is an incandescent lamp rated at 6.3V with a round domed top lens configuration and miniature bayonet base. This component is classified as "Not For New Designs," indicating it is a legacy product. Finding equivalent or substitute parts is necessary for maintenance applications, field replacements, and systems requiring compatible lighting solutions where the original part number is unavailable or inventory is depleted.

Substiute Parts

47

Visual Communications Company - VCCIn Stock: 627247 Datasheet

Current PartRFQ

259

CEC IndustriesIn Stock: 1214259 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VCC 47 is constrained by the following critical parameters:

Voltage Compatibility: The substitute part must operate at 6.3V to ensure correct brightness and lamp life in the original circuit.

Lamp Type: Both parts must be incandescent technology to maintain electrical load characteristics and thermal behavior.

Base Configuration: The base type determines physical fit in the socket. The VCC 47 uses a miniature bayonet base. Substitute parts with different base types (such as wedge bases) are not mechanically compatible without socket modification.

Lens Size and Style: The lens dimensions and optical configuration affect form factor and light distribution. Differences in lens size or style may result in improper fit or altered optical performance.

Luminous Output (MSCP): While minor variations in MSCP are acceptable for functional equivalence, significant deviations may affect circuit performance or application requirements.

The CEC Industries 259 shares the 6.3V voltage rating and incandescent type but uses a wedge base (W2.1X9.5D) instead of a miniature bayonet base. This fundamental difference in base configuration makes the CEC 259 mechanically incompatible with sockets designed for the VCC 47.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution: The CEC Industries 259 cannot serve as a direct mechanical substitute for the VCC 47 due to incompatible base types. The VCC 47 requires a miniature bayonet socket, while the CEC 259 requires a wedge socket configuration.

Compliance Considerations: Both parts meet RoHS compliance requirements. The VCC 47 is ROHS3 compliant, and the CEC 259 is RoHS compliant, satisfying environmental and regulatory standards for their respective applications.

Product Status: The VCC 47 is designated "Not For New Designs," indicating it is a legacy component. The CEC Industries 259 is listed as "Active," suggesting ongoing availability and support.

Electrical Equivalence: Both lamps operate at 6.3V and use incandescent technology, making them electrically compatible in circuits designed for 6.3V incandescent loads. However, the higher MSCP of the CEC 259 (0.65 versus 0.5) indicates increased luminous output, which may affect application performance if brightness is a critical specification.

Frequently Asked Questions (FAQ)

Q: Can the CEC Industries 259 be used as a replacement for the VCC 47?

A: No. While both lamps share the same 6.3V voltage rating and incandescent technology, they use different base types. The VCC 47 uses a miniature bayonet base, and the CEC 259 uses a wedge base. These bases are not interchangeable without socket modification.

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

A: The primary difference is the base configuration. The VCC 47 has a miniature bayonet base, while the CEC 259 has a wedge base (W2.1X9.5D). Additionally, the CEC 259 produces higher luminous output (0.65 MSCP versus 0.5 MSCP).

Q: Are there any electrical compatibility concerns?

A: Both lamps are rated for 6.3V operation and use incandescent technology. Electrically, they are compatible with 6.3V circuits. However, the higher MSCP of the CEC 259 may result in increased brightness and potentially different thermal characteristics.

Q: What does "Not For New Designs" mean for the VCC 47?

A: This designation indicates the VCC 47 is a legacy product no longer recommended for new equipment designs. It remains available for maintenance and replacement in existing systems.

Q: How do I identify the correct base type for my application?

A: Examine the socket in your equipment. A miniature bayonet socket has a two-pin bayonet connection. A wedge socket has a flat, wedge-shaped contact interface. The socket type determines which lamp base is required.

Q: Are both lamps RoHS compliant?

A: Yes. The VCC 47 is ROHS3 compliant, and the CEC Industries 259 is RoHS compliant. Both meet environmental and regulatory standards.