MPC3BWT LED Panel Indicator Equivalent & Substitute Parts

Part Overview

The MPC3BWT is a panel-mounted LED indicator manufactured by Bivar Inc., designed for 4V, 25mA operation with a blue 430nm wavelength output at 15mcd brightness. This component is classified as obsolete, necessitating identification of active alternative models that maintain electrical and mechanical compatibility for continued system integration.

Substiute Parts

MPC3BWT

Bivar Inc.In Stock: 953MPC3BWT Datasheet

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MPC3BWD

Bivar Inc.In Stock: 996MPC3BWD Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The MPC3BWD qualifies as a substitute based on maintained electrical and mechanical parameters. Substitution compatibility is determined by the following criteria:

Maintained Parameters:

• Voltage: 4V (identical)
• Current: 25mA (identical)
• Lamp Color: Blue (identical)
• Wavelength - Peak: 430nm (identical)
• Panel Cutout Dimensions: 0.24" (6.10mm) (identical)
• Lens Size: 3mm, T-1 (identical)
• Lens Style: Round with Domed Top (identical)
• Panel Cutout Shape: Round (identical)

Varied Parameters:

• Millicandela Rating: 15mcd (MPC3BWT) vs. 10mcd (MPC3BWD)
• Viewing Angle: 20° (MPC3BWT) vs. 35° (MPC3BWD)
• Lens Transparency: Clear (MPC3BWT) vs. Diffused (MPC3BWD)
• Product Status: Obsolete (MPC3BWT) vs. Active (MPC3BWD)
• Termination Style: Not specified (MPC3BWT) vs. PC Pin (MPC3BWD)

Parameter Comparison

Engineering Selection Recommendations

The MPC3BWD is an active production substitute for the obsolete MPC3BWT. Both components maintain identical electrical ratings (4V, 25mA) and mechanical form factors (0.24" panel cutout, 3mm T-1 lens). The MPC3BWD carries ROHS3 compliance and REACH Unaffected designation, supporting regulatory requirements for applications transitioning from the obsolete MPC3BWT.

Key distinctions between the parts involve optical characteristics: the MPC3BWD provides diffused lens transparency with increased viewing angle (35° vs. 20°) and reduced brightness (10mcd vs. 15mcd). Applications requiring the original 15mcd output with clear lens characteristics may require optical performance validation before adopting the MPC3BWD substitute.

Frequently Asked Questions (FAQ)

Q: Can MPC3BWD directly replace MPC3BWT in existing designs? A: Electrical and mechanical compatibility is confirmed. Optical performance differs due to lens transparency (diffused vs. clear) and brightness rating (10mcd vs. 15mcd). Design review is required to confirm acceptability of these optical differences in the target application.

Q: What is the primary reason for substitution? A: The MPC3BWT is classified as obsolete. The MPC3BWD is an active product from the same manufacturer in the same MPC3 series, providing continuity for ongoing component procurement.

Q: Are there differences in panel cutout requirements? A: No. Both components require identical 0.24" (6.10mm) round panel cutout dimensions. No mechanical modification to existing panel assemblies is necessary.

Q: What are the lens transparency differences? A: The MPC3BWT features a clear lens for direct color viewing. The MPC3BWD features a diffused lens, which spreads light over a wider area with reduced peak brightness. This affects visual appearance and viewing angle characteristics.

Q: What is the impact of the 35° vs. 20° viewing angle? A: The MPC3BWD provides a wider viewing angle (35°) compared to the MPC3BWT (20°). This expands the cone of brightness visibility but reduces peak apparent brightness at direct angles.

Q: Are compliance certifications different between the parts? A: The MPC3BWD provides documented ROHS3 compliance and REACH Unaffected status. The MPC3BWT compliance certifications are not specified. Applications with regulatory requirements should reference the MPC3BWD certifications.

Q: What electrical parameters must be considered in substitution? A: Voltage (4V) and current (25mA) are identical between both parts. Circuit design for the MPC3BWT requires no electrical modification when adopting the MPC3BWD.