MB403-W28-CW-BP LED Replacement Lamp Equivalent & Substitute Parts

Part Overview

The MB403-W28-CW-BP is an active-status LED replacement lamp manufactured by Visual Communications Company (VCC). This component is a white miniature bayonet (BA9S) LED lamp rated at 28V, designed in T-3 1/4 form factor for general purpose lighting applications. The part replaces multiple miniature bayonet lamp types and is suitable for applications requiring standardized LED lamp substitution. Equivalent and substitute parts within the MB403 series provide voltage-rated alternatives while maintaining identical mechanical and optical characteristics.

Substiute Parts

MB403-W28-CW-BP

Visual Communications Company - VCCIn Stock: 909MB403-W28-CW-BP Datasheet

Current PartRFQ

MB403-W24-CW

Visual Communications Company - VCCIn Stock: 1074MB403-W24-CW Datasheet

Parametric EquivalentRFQ

MB403-W28-CW

Visual Communications Company - VCCIn Stock: 847MB403-W28-CW Datasheet

Parametric EquivalentRFQ

MB403-W6AC-CW

Visual Communications Company - VCCIn Stock: 882MB403-W6AC-CW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution within the MB403 series is determined by the following parameters:

Fixed Parameters (Must Match for Substitution):

• Base Type: Miniature Bayonet (BA9S)
• Size / Dimension: T-3 1/4
• Color: White
• Millicandela Rating: 1560mcd
• Configuration: Single
• Series: MB403
• Applications: General Purpose Lighting
• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

Variable Parameter (Determines Voltage Rating):

• Voltage - Forward (Vf) (Typ): 6V, 24V, or 28V

The MB403-W28-CW-BP can be substituted with MB403-W24-CW or MB403-W6AC-CW based on system voltage requirements. All three parts share identical mechanical form factor, optical output, and compliance certifications. Selection depends exclusively on the forward voltage specification required by the application circuit.

Parameter Comparison

Engineering Selection Recommendations

All parts within the MB403 series maintain Active product status and full compliance with ROHS3 and REACH regulations. Selection between MB403-W28-CW-BP, MB403-W24-CW, MB403-W28-CW, and MB403-W6AC-CW is determined solely by the system voltage requirement:

• 28V Systems: MB403-W28-CW-BP or MB403-W28-CW
• 24V Systems: MB403-W24-CW
• 6V Systems: MB403-W6AC-CW

All substitute parts deliver identical optical output (1560mcd), mechanical compatibility (BA9S base, T-3 1/4 form factor), and regulatory compliance. Component selection should be based on circuit voltage specification to ensure proper lamp operation and longevity.

Frequently Asked Questions (FAQ)

Q: Can MB403-W28-CW-BP be used in a 24V circuit?

A: No. The MB403-W28-CW-BP is rated for 28V forward voltage. Use MB403-W24-CW for 24V applications. Applying incorrect voltage will result in improper lamp operation.

Q: Are all MB403 series lamps mechanically interchangeable?

A: Yes. All MB403 series lamps share identical base type (Miniature Bayonet BA9S), form factor (T-3 1/4), and optical output (1560mcd). Mechanical and optical interchangeability is guaranteed across voltage variants.

Q: What is the difference between MB403-W28-CW-BP and MB403-W28-CW?

A: Both parts are identical in electrical and optical specifications. The difference is packaging designation: MB403-W28-CW-BP indicates bulk packaging with specific handling requirements, while MB403-W28-CW is the base part number. Verify packaging requirements for your procurement process.

Q: Are these lamps RoHS and REACH compliant?

A: Yes. All MB403 series lamps are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory standards for electronic components.

Q: Can I substitute MB403-W6AC-CW for MB403-W28-CW-BP?

A: Only if your application circuit operates at 6V. The lamps are mechanically and optically identical but have different voltage ratings. Substitution is valid only when the system voltage matches the lamp's forward voltage specification.

Q: What applications are these lamps suitable for?

A: MB403 series lamps are rated for General Purpose Lighting applications. They are suitable for any application requiring miniature bayonet-base white LED lamps with standardized optical output.