Equivalent & Substitute Parts for 3BCC-R/Y LED Indicator

Part Overview

The 3BCC-R/Y 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 part features clear lens transparency with 8mcd red and 6mcd yellow brightness ratings at 2V forward voltage and 30mA test current. The product is classified as obsolete, necessitating identification of active equivalent components to maintain design continuity and ensure supply chain availability for new production and field replacements.

Substiute Parts

3BCC-R/Y

Bivar Inc.In Stock: 7933BCC-R/Y Datasheet

Current PartRFQ

3BC-3-R/Y-F

Bivar Inc.In Stock: 10683BC-3-R/Y-F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The 3BC-3-R/Y-F is identified as a substitute for the obsolete 3BCC-R/Y based on the following substitution criteria:

Matching Parameters (Substitution Basis):

• Dual color configuration: Red and Yellow LED indication
• Identical forward voltage: 2V Red, 2V Yellow
• Identical wavelength specifications: 625nm Red, 590nm Yellow
• Identical lens size: T-1 (3mm)
• Identical mounting type: Through Hole radial configuration
• Identical viewing angle: 40°
• Identical MSL rating: 1 (Unlimited)
• Same manufacturer: Bivar Inc.

Differing Parameters (Design Considerations):

• Configuration: Bidirectional (3BCC-R/Y) vs. Common Cathode (3BC-3-R/Y-F)
• Lens transparency: Clear (3BCC-R/Y) vs. Diffused (3BC-3-R/Y-F)
• Lens color: Colorless (3BCC-R/Y) vs. White (3BC-3-R/Y-F)
• Millicandela rating: 8mcd Red, 6mcd Yellow (3BCC-R/Y) vs. 30mcd Red, 20mcd Yellow (3BC-3-R/Y-F)
• Test current: 30mA (3BCC-R/Y) vs. 20mA (3BC-3-R/Y-F)
• Height: 4.50mm (3BCC-R/Y) vs. 7.00mm (3BC-3-R/Y-F)
• Product status: Obsolete (3BCC-R/Y) vs. Active (3BC-3-R/Y-F)

Parameter Comparison

Engineering Selection Recommendations

The 3BC-3-R/Y-F serves as the active equivalent for the obsolete 3BCC-R/Y. Selection of this substitute requires evaluation of the following factors:

Electrical Compatibility: Forward voltage and wavelength specifications are identical, ensuring optical and electrical baseline compatibility. Test current is reduced from 30mA to 20mA in the substitute, resulting in lower power consumption. The higher millicandela ratings (30mcd Red, 20mcd Yellow vs. 8mcd Red, 6mcd Yellow) provide increased brightness output.

Mechanical Compatibility: Both parts use T-1 (3mm) through-hole radial mounting. Height difference of 2.50mm (4.50mm vs. 7.00mm) must be evaluated against PCB layout constraints and enclosure clearances.

Configuration Differences: The main part uses bidirectional configuration while the substitute uses common cathode configuration. Circuit design modifications are required to accommodate this change in electrical topology.

Optical Differences: The main part features clear lens transparency with colorless lens, while the substitute features diffused lens transparency with white lens color. This affects light distribution characteristics and perceived brightness uniformity.

Compliance and Availability: The substitute is RoHS3 compliant and maintains active product status with confirmed inventory availability (1054 pcs), ensuring long-term supply chain viability compared to the obsolete main part.

Frequently Asked Questions (FAQ)

Q: Can the 3BC-3-R/Y-F directly replace the 3BCC-R/Y without circuit modifications?

A: No. The configuration change from bidirectional to common cathode requires circuit topology modifications. The bidirectional configuration allows independent control of each LED color, while common cathode configuration shares a common negative terminal. Circuit redesign is necessary.

Q: What is the impact of the 2.50mm height difference?

A: The 3BC-3-R/Y-F is 2.50mm taller (7.00mm vs. 4.50mm). This must be verified against PCB layout, component spacing, and enclosure clearance requirements. Physical fit validation is required before implementation.

Q: How does the diffused lens affect optical performance compared to the clear lens?

A: The diffused lens (3BC-3-R/Y-F) scatters light over a wider area with more uniform distribution, while the clear lens (3BCC-R/Y) provides more focused light output. The substitute's higher millicandela ratings (30mcd Red, 20mcd Yellow) compensate for diffusion losses but produce different visual characteristics.

Q: Are the forward voltage specifications identical?

A: Yes. Both parts operate at 2V forward voltage for red and yellow LEDs, ensuring compatibility with existing voltage regulation circuits.

Q: What is the significance of the reduced test current in the substitute?

A: The substitute operates at 20mA test current versus 30mA for the main part. This represents a 33% reduction in current draw, resulting in lower power consumption and reduced thermal generation. Existing current-limiting resistor values must be recalculated for the new operating point.

Q: Is the 3BC-3-R/Y-F RoHS compliant?

A: Yes. The 3BC-3-R/Y-F is RoHS3 compliant, meeting current environmental and regulatory requirements for electronic components.

Q: What is the wavelength compatibility between the two parts?

A: Wavelength specifications are identical: 625nm peak for red and 590nm peak for yellow. This ensures color consistency and compatibility with optical filters or detection circuits designed for the original part.