MB403-R28-CR LED Lamp Equivalent & Substitute Parts

Part Overview

The MB403-R28-CR is an active-status red LED lamp replacement featuring a miniature bayonet (BA9S) base, designed for general purpose lighting applications. This T-3 1/4 form factor lamp operates at 28V forward voltage with a wavelength of 634nm and delivers 2180 millicandela output. The lamp is manufactured by Visual Communications Company (VCC) and is ROHS3 compliant. Substitute parts are identified based on matching mechanical form factor, base type, color specification, and optical output while accommodating different voltage requirements within the same product series.

Substiute Parts

MB403-R28-CR

Visual Communications Company - VCCIn Stock: 928MB403-R28-CR Datasheet

Current PartRFQ

MB403-R24-CR

Visual Communications Company - VCCIn Stock: 927MB403-R24-CR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MB403-R28-CR is determined by strict adherence to the following parameters:

Mandatory Matching Parameters:

• Base Type: Miniature Bayonet (BA9S)
• Size / Dimension: T-3 1/4
• Color: Red
• Wavelength: 634nm
• Millicandela Rating: 2180mcd
• Configuration: Single
• Series: MB403
• Manufacturer: Visual Communications Company (VCC)

Variable Parameter:

• Voltage - Forward (Vf) (Typ): May differ based on circuit requirements

The MB403-R24-CR qualifies as a parametric equivalent because it maintains identical mechanical, optical, and structural specifications while operating at 24V instead of 28V. Both parts share the same series designation, base type, form factor, color, wavelength, and light output intensity. The voltage difference reflects application-specific circuit design requirements and does not affect the lamp's physical compatibility or optical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

For MB403-R28-CR Selection: Select the MB403-R28-CR when the circuit design specifies 28V forward voltage operation. This part is active-status, ROHS3 compliant, and maintains full compatibility with BA9S miniature bayonet sockets. Current inventory of 895 pieces supports immediate procurement.

For MB403-R24-CR Selection: Select the MB403-R24-CR when the circuit design specifies 24V forward voltage operation. This substitute maintains identical mechanical, optical, and compliance characteristics while accommodating lower voltage system requirements. Current inventory of 869 pieces supports immediate procurement. Both parts carry identical RoHS3 compliance and REACH unaffected status.

Compliance Basis: Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8541.41.0000. Selection between these parts is determined solely by the system voltage requirement, not by compliance or availability considerations.

Frequently Asked Questions (FAQ)

Q: Can MB403-R24-CR replace MB403-R28-CR in any application?

A: Substitution is valid only when the circuit design operates at 24V. The substitute part is not interchangeable in 28V circuits. Verify the system voltage specification before substitution.

Q: Are the mechanical dimensions identical between these parts?

A: Yes. Both parts feature T-3 1/4 form factor and miniature bayonet (BA9S) base type. Physical socket compatibility is identical.

Q: Do these parts produce the same light output?

A: Yes. Both parts deliver 2180 millicandela at 634nm wavelength (red spectrum). Optical output intensity is identical.

Q: What is the primary difference between MB403-R28-CR and MB403-R24-CR?

A: The only difference is forward voltage: MB403-R28-CR operates at 28V, while MB403-R24-CR operates at 24V. All other specifications are identical.

Q: Are both parts currently available?

A: Yes. MB403-R28-CR has 895 pieces in stock; MB403-R24-CR has 869 pieces in stock. Both are active-status products.

Q: Do these parts meet RoHS requirements?

A: Yes. Both MB403-R28-CR and MB403-R24-CR are ROHS3 compliant and REACH unaffected.

Q: Can I use these lamps in general purpose lighting applications?

A: Yes. Both parts are designated for general purpose lighting applications with miniature bayonet base compatibility.