LED Panel Indicator MPR3BWT Equivalent & Substitute Parts

Part Overview

The MPR3BWT is a panel-mounted LED indicator manufactured by Bivar Inc., featuring a blue clear lens with 15mcd brightness at 430nm wavelength. This component is classified as obsolete, necessitating identification of active substitute parts for new designs and ongoing production requirements. The MPR3 series provides standardized panel cutout dimensions (0.24" / 6.10mm) and consistent electrical ratings across multiple lens configurations, enabling direct substitution within defined parameter boundaries.

Substiute Parts

MPR3BWT

Bivar Inc.In Stock: 766MPR3BWT Datasheet

Current PartRFQ

MPR3BWD

Bivar Inc.In Stock: 961MPR3BWD Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution within the MPR3 series is determined by strict alignment of critical electrical and mechanical parameters. The following parameters must remain constant for direct substitution:

Critical Parameters (Non-Negotiable):

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

Application-Dependent Parameters (Substitution Allowed with Design Review):

• Lens Transparency: Clear vs. Diffused
• Millicandela Rating: 15mcd vs. 10mcd
• Viewing Angle: 20° vs. 35°

The MPR3BWD qualifies as a substitute part because it maintains all critical parameters while offering variations in optical characteristics. The diffused lens and reduced brightness (10mcd vs. 15mcd) with wider viewing angle (35° vs. 20°) represent trade-offs suitable for applications where brightness uniformity and wider visibility are prioritized over peak intensity.

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution (MPR3BWT to MPR3BWD):

The MPR3BWD is the qualified substitute for the obsolete MPR3BWT. Both parts share identical electrical ratings (4V, 25mA) and mechanical specifications (0.24" panel cutout, 3mm T-1 lens form factor), ensuring circuit-level and mechanical compatibility without modification to existing designs.

Product Status Consideration:

The MPR3BWT is classified as obsolete, while the MPR3BWD maintains active production status with 919 units in current inventory. Transition to MPR3BWD is necessary for ongoing procurement and new production builds.

Compliance and Certification:

Both parts carry identical regulatory classifications (ECCN: EAR99, HTSUS: 8541.41.0000) and moisture sensitivity ratings (MSL 1 - Unlimited). The MPR3BWD includes RoHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements.

Optical Performance Trade-offs:

The MPR3BWD introduces three optical parameter variations:

• Lens transparency changes from clear to diffused, reducing peak brightness concentration
• Millicandela rating decreases from 15mcd to 10mcd (33% reduction)
• Viewing angle increases from 20° to 35° (75% increase)

These changes result in more uniform brightness distribution across a wider viewing angle at the cost of reduced peak intensity. Selection between these variants depends on application requirements for brightness uniformity versus peak brightness concentration.

Frequently Asked Questions (FAQ)

Q: Can MPR3BWD directly replace MPR3BWT in existing circuit designs?

A: Yes. Both parts operate at identical voltage (4V) and current (25mA) ratings. No circuit modifications are required. The panel cutout dimensions (0.24" / 6.10mm) and lens form factor (3mm T-1 round domed) are identical, enabling direct mechanical substitution.

Q: What is the primary difference between MPR3BWT and MPR3BWD?

A: The primary differences are optical characteristics. MPR3BWT features a clear lens with 15mcd brightness and 20° viewing angle. MPR3BWD features a diffused lens with 10mcd brightness and 35° viewing angle. Both maintain the same blue color (430nm wavelength) and electrical specifications.

Q: Why is MPR3BWT listed as obsolete?

A: MPR3BWT is no longer in active production. The MPR3BWD serves as the active substitute within the MPR3 series, providing equivalent electrical and mechanical compatibility with alternative optical characteristics.

Q: Does the diffused lens of MPR3BWD affect brightness perception?

A: Yes. The diffused lens distributes light more uniformly across a wider 35° viewing angle compared to the clear lens 20° angle of MPR3BWT. The 10mcd rating of MPR3BWD represents 33% lower peak brightness than the 15mcd of MPR3BWT. Applications requiring maximum peak brightness should evaluate this trade-off.

Q: Are there packaging differences between MPR3BWT and MPR3BWD?

A: MPR3BWT packaging is listed as "-" (not specified). MPR3BWD is supplied in Tray packaging. Confirm packaging requirements with procurement specifications for your application.

Q: Do both parts meet current environmental regulations?

A: MPR3BWD carries RoHS3 compliance and REACH unaffected status. Both parts share identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications. Moisture sensitivity level is identical (MSL 1 - Unlimited) for both parts.

Q: What inventory status should I expect?

A: MPR3BWT (obsolete) has 744 units in stock. MPR3BWD (active) has 919 units in current inventory. For new designs and ongoing production, source from MPR3BWD inventory.

Q: Can I use MPR3BWD in applications originally designed for MPR3BWT?

A: Yes, provided your application can accommodate the optical differences. If the design requires 15mcd peak brightness with 20° viewing angle, evaluate whether 10mcd with 35° viewing angle meets functional requirements. Electrical and mechanical compatibility is guaranteed.