LED RED/YLW DIFFUSED T-1 T/H 3SBC-R/Y-F Equivalent & Substitute Parts

Part Overview

The 3SBC-R/Y-F is a bidirectional red and yellow LED indicator manufactured by Bivar Inc., designed for through-hole mounting in T-1 (3mm) form factor applications. This component provides discrete LED indication with diffused lens characteristics suitable for general-purpose signaling and status display functions.

The 3SBC-R/Y-F is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this component.

Substiute Parts

3SBC-R/Y-F

Bivar Inc.In Stock: 10853SBC-R/Y-F Datasheet

Current PartRFQ

WP937EYW

KingbrightIn Stock: 2132WP937EYW Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3SBC-R/Y-F are identified based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Lens size: T-1 (3mm) form factor
• Color configuration: Red and Yellow bidirectional capability
• Lens transparency: Diffused
• Mounting type: Through hole radial package
• Voltage range: Forward voltage within acceptable operating margins
• Current rating: 20mA test current compatibility
• Moisture sensitivity: MSL 1 classification

Substitution Logic: The WP937EYW from Kingbright meets the core mechanical and electrical requirements for substitution. Both components share identical lens size (T-1/3mm), bidirectional configuration, diffused lens transparency, through-hole radial mounting, and MSL 1 rating. Forward voltage specifications differ slightly between red and yellow channels, and millicandela ratings vary, but both components operate within the same 20mA test current specification and support equivalent application requirements.

Parameter Comparison

Engineering Selection Recommendations

WP937EYW (Kingbright) as Primary Substitute:

The WP937EYW is the designated substitute for the obsolete 3SBC-R/Y-F. This component maintains mechanical compatibility through identical T-1 (3mm) lens size, radial through-hole package configuration, and diffused lens characteristics. Both components share MSL 1 rating and equivalent ECCN/HTSUS classifications.

The WP937EYW carries active product status, ensuring ongoing availability and supply chain support. The component is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for new designs and production continuity.

Forward voltage specifications for the WP937EYW are slightly elevated (2V Red, 2.1V Yellow) compared to the 3SBC-R/Y-F (1.7V Red, 2V Yellow), representing a 0.3V to 0.1V increase. Both components operate at identical 20mA test current. Millicandela ratings differ, with the 3SBC-R/Y-F providing higher brightness (15mcd Red, 20mcd Yellow) versus the WP937EYW (10mcd Red, 8mcd Yellow). The WP937EYW offers a wider viewing angle (60° versus 45°).

Selection of the WP937EYW is appropriate for applications where the original 3SBC-R/Y-F is no longer available and where the specified electrical and mechanical parameters are compatible with circuit design requirements.

Frequently Asked Questions (FAQ)

Q: Can the WP937EYW directly replace the 3SBC-R/Y-F in existing designs?

A: The WP937EYW is mechanically compatible with the 3SBC-R/Y-F, sharing identical T-1 (3mm) lens size, radial through-hole package, and diffused lens configuration. Forward voltage specifications differ slightly. Circuit designs must accommodate the 0.1V to 0.3V increase in forward voltage and the reduced millicandela ratings (10mcd Red, 8mcd Yellow versus 15mcd Red, 20mcd Yellow). Verify that these electrical parameter variations are acceptable for the intended application.

Q: What are the key mechanical compatibility factors?

A: Both components feature T-1 (3mm) lens size, round domed-top lens style, white lens color, diffused transparency, radial through-hole mounting, and equivalent package dimensions (height difference of 0.30mm maximum). These parameters ensure physical interchangeability in standard through-hole PCB layouts.

Q: How do the brightness specifications compare?

A: The 3SBC-R/Y-F provides 15mcd Red and 20mcd Yellow output. The WP937EYW provides 10mcd Red and 8mcd Yellow output. Applications requiring specific brightness levels must account for this reduction in luminous intensity.

Q: What is the viewing angle difference?

A: The 3SBC-R/Y-F has a 45° viewing angle, while the WP937EYW has a 60° viewing angle. The wider viewing angle of the WP937EYW may provide improved visibility across a broader range of observation angles.

Q: Are there regulatory compliance differences?

A: The WP937EYW is ROHS3 compliant and REACH unaffected. The 3SBC-R/Y-F compliance status is not specified. Both components share identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications. The WP937EYW's active regulatory status supports compliance requirements for new production.

Q: Why is the 3SBC-R/Y-F classified as obsolete?

A: Obsolete status indicates the component is no longer manufactured or supported by Bivar Inc. The WP937EYW, with active product status from Kingbright, provides ongoing supply chain availability and manufacturer support.