Equivalent & Substitute Parts: VCC 79 Incandescent Lamp RT-1.75 Wedge 6V

Part Overview

The VCC 79 is an incandescent lamp designed for 6V applications with a round domed top lens configuration and wedge base connection. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing maintenance and repair operations. The lamp delivers 0.6 MSCP (Mean Spherical Candle Power) and is housed in a clear RT-1 3/4 form factor. Due to its obsolete status, sourcing equivalent active production parts ensures supply chain continuity and system reliability.

Substiute Parts

79

Visual Communications Company - VCCIn Stock: 108779 Datasheet

Current PartRFQ

79

CEC IndustriesIn Stock: 88479 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VCC 79 is determined by strict alignment of electrical and mechanical parameters. The following criteria establish functional equivalence:

Electrical Parameters (Non-negotiable):

• Voltage Rating: 6V (exact match required)
• MSCP Output: 0.6 (exact match required)

Mechanical Parameters (Non-negotiable):

• Lead Style: Wedge base connection
• Lens Size: T-1.75 or RT-1 3/4 designation (equivalent form factors)
• Lens Style: Round with domed top configuration

Compliance Parameters (Required for modern applications):

• RoHS Compliance status
• ECCN and HTSUS classifications for regulatory alignment

The CEC Industries 79 meets all substitution criteria through identical voltage rating, MSCP output, wedge base configuration, and equivalent T-1.75 lens size specification.

Parameter Comparison

Engineering Selection Recommendations

The CEC Industries 79 incandescent lamp serves as a direct functional equivalent to the obsolete VCC 79 component. Selection is based on the following engineering criteria:

Electrical Compatibility: Both parts operate at 6V with identical 0.6 MSCP output, ensuring equivalent light intensity in target applications.

Mechanical Compatibility: The wedge base configuration and T-1.75 lens size (equivalent to RT-1 3/4) provide identical physical interface characteristics for socket mounting and optical performance.

Regulatory Compliance: Both parts maintain RoHS compliance and share identical ECCN/HTSUS classifications, supporting seamless integration into regulated supply chains.

Product Status Advantage: The CEC Industries 79 maintains active production status, providing reliable long-term availability compared to the obsolete VCC 79.

Inventory Availability: CEC Industries 79 stock of 866 pieces supports immediate procurement requirements.

Frequently Asked Questions (FAQ)

Q: Can the CEC Industries 79 directly replace the VCC 79 in existing applications?

A: Yes. Both lamps share identical voltage rating (6V), light output (0.6 MSCP), wedge base configuration, and equivalent lens form factors (T-1.75 and RT-1 3/4 are equivalent designations). Mechanical and electrical interfaces are identical.

Q: What is the difference between RT-1 3/4 and T-1.75 lens size designations?

A: RT-1 3/4 and T-1.75 represent equivalent form factors in incandescent lamp nomenclature. Both designations describe a 1.75-inch diameter round lens with domed top configuration. The CEC Industries part uses the T-1.75 designation with base specification W2X4.9D, which is functionally identical to the VCC RT-1 3/4 wedge configuration.

Q: Are there any compliance differences between the two parts?

A: Both parts maintain RoHS compliance and share identical ECCN (EAR99) and HTSUS (8539.29 series) classifications. The VCC 79 specifies ROHS3 compliance while the CEC Industries 79 specifies general RoHS compliance; both meet current regulatory requirements.

Q: What is the MSL (Moisture Sensitivity Level) for the CEC Industries substitute?

A: The CEC Industries 79 lists MSL as Not Applicable, which is standard for incandescent lamps. The VCC 79 specifies MSL 1 (Unlimited), indicating no moisture sensitivity constraints. Both parts are suitable for standard storage and handling conditions.

Q: Can I use the CEC Industries 79 in applications requiring ROHS3 specific certification?

A: The CEC Industries 79 carries RoHS compliance certification. If ROHS3 specific certification is a contractual requirement, verify with the supplier whether the part meets ROHS3 designation or if general RoHS compliance satisfies application requirements.