MB403-W24-CW-BP LED Replacement Lamp - Equivalent & Substitute Parts

Part Overview

The MB403-W24-CW-BP is an active-status LED lamp replacement designed as a white miniature bayonet (BA9S) light source for 24V applications. This T-3 1/4 form factor lamp delivers 1560 millicandela output and serves general purpose lighting requirements. Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part specifications, enabling direct functional replacement in compatible fixtures and assemblies.

Key Parameters

Parameter	Value	Substitution Relevance
Base Type	Miniature Bayonet (BA9S)	Physical mounting interface; must match for mechanical compatibility
Size / Dimension	T - 3 1/4	Form factor; determines fit in lamp housing and optical envelope
Voltage - Forward (Vf)	24V	Operating voltage; critical for electrical compatibility and circuit integration
Color	White	Light output specification; determines visual performance in application
Millicandela Rating	1560mcd	Luminous intensity; defines brightness output for functional equivalence
Configuration	Single	LED arrangement; indicates single-element design
RoHS Status	ROHS3 Compliant	Environmental compliance; required for regulated applications

Substitute Part Grouping Explanation

Substitute parts for the MB403-W24-CW-BP are identified based on strict parameter alignment in the following categories:

Primary Substitution Criteria:

Base Type: Miniature Bayonet (BA9S) — mechanical interface must be identical
Size / Dimension: T - 3 1/4 — form factor must match housing constraints
Color: White — optical output specification must be equivalent
Millicandela Rating: 1560mcd — luminous intensity must be identical
Configuration: Single — LED arrangement must match
RoHS Status: ROHS3 Compliant — environmental compliance must be maintained

Voltage-Dependent Substitution: The MB403 series includes variants at different operating voltages (6V and 24V). Substitution between voltage variants is not permitted without circuit redesign, as forward voltage (Vf) directly determines circuit compatibility and safe operation.

Parameter Comparison

Parameter	MB403-W24-CW-BP (Main)	MB403-W24-CW (Substitute)	MB403-W6AC-CW (Voltage Variant)
Manufacturer	Visual Communications Company - VCC	Visual Communications Company - VCC	Visual Communications Company - VCC
Base Type	Miniature Bayonet (BA9S)	Miniature Bayonet (BA9S)	Miniature Bayonet (BA9S)
Size / Dimension	T - 3 1/4	T - 3 1/4	T - 3 1/4
Voltage - Forward (Vf)	24V	24V	6V
Color	White	White	White
Millicandela Rating	1560mcd	1560mcd	1560mcd
Configuration	Single	Single	Single
Series	MB403	MB403	MB403
Product Status	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99	EAR99
HTSUS	8541.41.0000	8541.41.0000	8541.41.0000

Engineering Selection Recommendations

For 24V Applications: The MB403-W24-CW serves as a direct parametric equivalent to the MB403-W24-CW-BP. Both parts maintain identical electrical specifications (24V forward voltage), mechanical interface (BA9S miniature bayonet), form factor (T-3 1/4), and optical output (1560mcd white). Both are active-status products with ROHS3 compliance and REACH unaffected status. Selection between these two 24V variants is based on packaging and inventory availability.

For 6V Applications: The MB403-W6AC-CW is a voltage variant within the MB403 series. This part is not a substitute for 24V applications. It is specified only for circuits designed for 6V operation. Use of the 6V variant in a 24V circuit will result in component failure and circuit malfunction.

Compliance Considerations: All three parts maintain ROHS3 compliance and REACH unaffected status, meeting environmental regulatory requirements for regulated markets and applications.

Frequently Asked Questions (FAQ)

Q: Can MB403-W24-CW replace MB403-W24-CW-BP directly? A: Yes. Both parts share identical electrical parameters (24V), mechanical interface (BA9S), form factor (T-3 1/4), and optical output (1560mcd white). Direct substitution is supported.

Q: What is the difference between MB403-W24-CW-BP and MB403-W24-CW? A: The primary difference is packaging designation. The "-BP" suffix indicates bulk packaging. Both parts are electrically and mechanically equivalent for 24V applications.

Q: Can MB403-W6AC-CW be used in place of MB403-W24-CW-BP? A: No. The MB403-W6AC-CW operates at 6V forward voltage, while MB403-W24-CW-BP operates at 24V. These are voltage variants designed for different circuit architectures. Using a 6V part in a 24V circuit will damage the component.

Q: What determines whether a part can substitute for MB403-W24-CW-BP? A: Substitution requires matching parameters: Miniature Bayonet (BA9S) base type, T-3 1/4 form factor, 24V forward voltage, white color, 1560mcd output, single configuration, and ROHS3 compliance.

Q: Are all MB403 series lamps compatible with the same fixtures? A: No. MB403 series lamps are available in different voltage ratings (6V and 24V). Fixture compatibility depends on the circuit voltage. Verify the operating voltage of your application before selecting a part.

Q: What is the significance of the BA9S base type? A: BA9S is the miniature bayonet socket standard. This mechanical interface determines physical mounting in the fixture. All substitute parts must use BA9S to ensure proper mechanical fit.

Q: Are there any moisture sensitivity considerations for these parts? A: MB403-W24-CW-BP and MB403-W24-CW do not specify moisture sensitivity level (MSL: Not Applicable). MB403-W6AC-CW specifies MSL 1 (Unlimited). For applications with moisture exposure, verify storage and handling requirements with component documentation.

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