3BWC-201 Equivalent and Substitute Parts

Part Overview

The Bivar Inc. 3BWC-201 is a blue LED indication component with a T-1 form factor designed for through-hole mounting applications. This part is rated at 4V forward voltage with a 15mcd luminous intensity and features a clear, domed lens with 20° viewing angle. The 3BWC-201 is classified as obsolete, necessitating the identification of suitable alternative components for new designs and production requirements. Substitute parts must maintain compatibility with the electrical parameters and mechanical form factor while considering current availability and product status.

Substiute Parts

3BWC-201

Bivar Inc.In Stock: 10843BWC-201 Datasheet

Current PartRFQ

5219918F

DialightIn Stock: 21185219918F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The 5219918F from Dialight is identified as a suitable substitute for the 3BWC-201 based on alignment of critical electrical and mechanical parameters. Substitution eligibility is determined by the following key parameters:

• Color and Lens Characteristics: Both parts are blue LEDs with clear, domed round lenses
• Mounting Configuration: Both utilize through-hole radial mounting
• Operational Current: Both are rated at 20mA test current
• Form Factor: Both fit the 3mm LED category with comparable physical dimensions
• Regulatory Compliance: Both share identical ECCN and HTSUS classifications
• Moisture Sensitivity: Both are rated MSL 1 (Unlimited)

The substitute part exhibits differences in forward voltage (3.5V versus 4V), luminous intensity (460mcd versus 15mcd), viewing angle (50° versus 20°), and wavelength specifications (470nm dominant versus 430nm peak). These parameter variations must be evaluated within the context of the specific application circuit design.

Parameter Comparison

Engineering Selection Recommendations

The 5219918F is an active product from Dialight with ROHS3 compliance and REACH Unaffected status, providing compliance advantages over the obsolete 3BWC-201. The substitute part shares core mechanical compatibility in through-hole radial configuration and identical regulatory trade classifications.

Circuit design integration requires accommodation of the 0.5V forward voltage differential (3.5V versus 4V). The significantly higher luminous intensity of the 5219918F (460mcd versus 15mcd) and wider viewing angle (50° versus 20°) may require circuit-level current limiting adjustments to maintain intended brightness levels in the application.

The 6.35mm maximum height of the 5219918F compared to the 5.10mm height of the original part necessitates verification of physical fit within the target PCB assembly and enclosure design constraints.

Frequently Asked Questions (FAQ)

Q: Can the 5219918F directly replace the 3BWC-201 without circuit modifications?

A: Direct mechanical substitution is possible due to shared through-hole radial mounting. However, the 0.5V forward voltage difference requires circuit evaluation. The substitute's higher luminous intensity may necessitate current limiting adjustments to achieve equivalent visual indication intensity.

Q: What physical constraints should be considered when substituting the 5219918F for the 3BWC-201?

A: The 5219918F has a maximum height of 6.35mm compared to the 3BWC-201's 5.10mm. PCB layout, enclosure clearances, and component spacing must accommodate this 1.25mm height increase.

Q: Are there compliance differences between these parts?

A: Both parts share identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications. The 5219918F carries active ROHS3 compliance and REACH Unaffected status, providing regulatory advantages for current production and distribution.

Q: How do the optical characteristics compare?

A: The 3BWC-201 has a 20° viewing angle at 15mcd, while the 5219918F has a 50° viewing angle at 460mcd. Application requirements for brightness and beam distribution determine whether these differences necessitate circuit adjustments or are compatible with the intended design function.

Q: What is the lens size difference between these parts?

A: The 3BWC-201 is specified as 3mm T-1, while the 5219918F is specified as 2.92mm diameter. Both fall within the 3mm LED category with functionally equivalent round domed lens profiles.