Equivalent & Substitute Parts for 3SBC-Y/G

Part Overview

The 3SBC-Y/G is a bidirectional LED indicator manufactured by Bivar Inc., featuring green and yellow light emission in a T-1 (3mm) through-hole package. This part provides dual-color indication capability with diffused lens optics suitable for panel-mount applications. The 3SBC-Y/G is classified as obsolete, necessitating identification of active substitute components that maintain functional compatibility within the specified electrical and mechanical parameters.

Substiute Parts

3SBC-Y/G

Bivar Inc.In Stock: 11683SBC-Y/G Datasheet

Current PartRFQ

3BC-Y/G

Bivar Inc.In Stock: 8063BC-Y/G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3SBC-Y/G is determined by the following critical parameters:

Mechanical Compatibility:

• Package type: T-1 (3mm) through-hole radial configuration
• Lens style: Diffused, round with domed top
• Maximum height: 4.50mm
• Mounting type: Through hole

Electrical Compatibility:

• Color configuration: Green and yellow bidirectional operation
• Forward voltage tolerance: Green 2.1V–2.2V, Yellow 2.0V
• Test current: 20mA for both colors
• Wavelength peak: 568nm green, 590nm yellow

Regulatory Compliance:

• Moisture sensitivity level MSL 1
• ECCN and HTSUS classification alignment

The substitute part 3BC-Y/G meets the mechanical and electrical envelope requirements. However, the millicandela rating differs significantly (6mcd green, 4mcd yellow versus 40mcd green, 150mcd yellow), and the viewing angle is reduced to 45°. These differences reflect a lower-brightness variant within the same product family.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement:

The 3BC-Y/G is the active substitute for the obsolete 3SBC-Y/G. Both components share identical mechanical form factors (T-1 package, 4.50mm height, through-hole radial configuration) and core electrical characteristics (bidirectional green/yellow operation, 20mA test current, matching wavelengths).

Compliance Advantage:

The 3BC-Y/G carries ROHS3 compliance certification, whereas the 3SBC-Y/G does not specify RoHS status. For applications subject to RoHS requirements, the 3BC-Y/G provides regulatory alignment.

Brightness Consideration:

The 3BC-Y/G exhibits reduced luminous intensity (6mcd green, 4mcd yellow) compared to the 3SBC-Y/G (40mcd green, 150mcd yellow). Circuit design must accommodate this lower brightness output through appropriate current limiting and optical positioning.

Viewing Angle Reduction:

The 3BC-Y/G viewing angle is 45° versus 55° for the 3SBC-Y/G. Applications requiring wide-angle visibility must account for this 10° reduction in angular distribution.

Frequently Asked Questions (FAQ)

Q: Can the 3BC-Y/G replace the 3SBC-Y/G in existing designs?

A: The 3BC-Y/G is mechanically and electrically compatible for through-hole mounting. Forward voltage specifications (2.1V green, 2.0V yellow) fall within acceptable tolerance of the original part (2.2V green, 2.0V yellow). However, the significantly lower brightness output (6mcd/4mcd versus 40mcd/150mcd) requires circuit verification to ensure adequate visibility in the target application.

Q: What is the primary difference between these two parts?

A: Both parts are T-1 (3mm) bidirectional green/yellow LEDs from Bivar Inc. The 3SBC-Y/G is obsolete with higher brightness ratings and a 55° viewing angle. The 3BC-Y/G is an active product with lower brightness and a 45° viewing angle, offering ROHS3 compliance.

Q: Are the packages identical?

A: Yes. Both components use T-1 (3mm) radial through-hole packages with 4.50mm maximum height, diffused round domed lenses, and identical pin configurations for bidirectional operation.

Q: Does the forward voltage difference affect circuit design?

A: The forward voltage difference is minimal (0.1V for green, 0V for yellow). Standard current-limiting resistor calculations will accommodate this variance. Verify final brightness output under actual operating conditions.

Q: Is the 3BC-Y/G suitable for high-visibility applications?

A: The 3BC-Y/G's reduced brightness (6mcd green, 4mcd yellow) is suitable for indicator applications requiring moderate visibility. Applications demanding high brightness or long-distance visibility may require alternative components with higher millicandela ratings.

Q: What is the inventory status?

A: The 3SBC-Y/G (obsolete) has 1077 pieces in stock. The 3BC-Y/G (active) has 768 pieces in stock.