Equivalent & Substitute Parts for 3BC-Y/G

Part Overview

The 3BC-Y/G is a bidirectional LED indicator manufactured by Bivar Inc., featuring green and yellow light emission in a diffused 3mm T-1 through-hole package. This component is designed for discrete LED indication applications requiring dual-color capability with radial lead configuration. The part maintains Active product status and is RoHS3 compliant. Substitute parts are identified to provide alternative sourcing options when the primary part becomes unavailable or when inventory requirements necessitate alternative suppliers.

Substiute Parts

3BC-Y/G

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

Current PartRFQ

5219478F

DialightIn Stock: 20775219478F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

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

Primary Substitution Criteria:

• Bidirectional configuration with green and yellow color capability
• 3mm lens size with diffused transparency
• Through-hole radial mounting
• Forward voltage compatibility: Green 2.0V–2.1V, Yellow 2.0V–2.1V
• Test current: 20mA for both colors
• Millicandela rating within acceptable tolerance: Green 6mcd±10%, Yellow 4mcd±10%
• RoHS3 compliance and MSL Level 1 rating

The substitute part 5219478F from Dialight meets these criteria with compatible electrical characteristics and mechanical form factor, enabling direct functional replacement in circuit designs.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: 3BC-Y/G (Bivar Inc.)

The 3BC-Y/G remains the specified component for applications where the original design parameters are required. This part is Active in product status and maintains full RoHS3 compliance with MSL Level 1 rating, suitable for standard manufacturing and storage conditions.

Substitute Part: 5219478F (Dialight)

The 5219478F qualifies as a functional equivalent based on matching electrical specifications, identical mounting configuration, and compatible optical characteristics. This part is also Active in product status with RoHS3 compliance and MSL Level 1 rating.

Design Considerations for Substitution:

The 5219478F exhibits a wider viewing angle (80° versus 45°), which may alter the optical performance in applications requiring directional indication. The increased height (5.70mm versus 4.50mm) must be verified against PCB layout constraints and mechanical clearance requirements. Both parts operate at identical test currents (20mA) and forward voltages within acceptable tolerance, ensuring circuit-level compatibility when properly integrated into the design.

Frequently Asked Questions (FAQ)

Q: Can 5219478F directly replace 3BC-Y/G in existing designs?

A: Electrical compatibility is confirmed. Mechanical verification is required for two parameters: the 5219478F is 1.20mm taller (5.70mm versus 4.50mm), and the viewing angle is wider (80° versus 45°). PCB layout and optical design must accommodate these differences.

Q: Are the forward voltage specifications compatible?

A: Yes. Both parts operate at 2.1V for green emission. The yellow emission differs by 0.1V (3BC-Y/G at 2.0V, 5219478F at 2.1V), which is within standard circuit tolerance for LED indicator applications at 20mA test current.

Q: Do both parts meet the same compliance standards?

A: Yes. Both 3BC-Y/G and 5219478F are RoHS3 compliant with MSL Level 1 (Unlimited) rating. Both carry EAR99 ECCN classification and fall under HTSUS code 8541.41.0000.

Q: What is the difference in brightness between these parts?

A: The 5219478F provides slightly higher brightness: 6.3mcd green (versus 6mcd) and 4.3mcd yellow (versus 4mcd). This represents approximately 5% increase in light output, which may be imperceptible in most indicator applications but should be considered in light-sensitive designs.

Q: Are there any package or lead configuration differences?

A: No. Both parts use identical radial through-hole packaging with round domed-top diffused lenses in 3mm form factor. Lead spacing and PCB footprint are compatible.

Q: What inventory status should be considered for procurement?

A: The 3BC-Y/G has 768 pieces in stock. The 5219478F has 1972 pieces in stock, providing greater availability for high-volume requirements or extended lead-time mitigation.