LED Panel Indicator 405-BG24H-O Equivalent & Substitute Parts

Part Overview

The 405-BG24H-O is a panel-mount LED indicator manufactured by Visual Communications Company (VCC), designed for 24V applications requiring a green light output. This component is classified as Obsolete and is no longer in active production. The 405 series LED features a 0.25" (6.35mm) round panel cutout with PC pin termination, delivering 10 millicandela at 60° viewing angle with a peak wavelength of 565nm.

Due to its obsolete status, sourcing replacement units from original inventory becomes increasingly difficult. Identifying functionally equivalent substitute parts ensures design continuity and maintains system reliability for applications currently utilizing this component.

Substiute Parts

405-BG24H-O

Visual Communications Company - VCCIn Stock: 823405-BG24H-O Datasheet

Current PartRFQ

L65DG24L

Visual Communications Company - VCCIn Stock: 4930L65DG24L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 405-BG24H-O are identified based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Lamp Color: Green (required for visual indication consistency)
• Voltage Rating: 24V (required for circuit compatibility)
• Termination Style: PC Pin (required for mechanical and electrical connection)
• Panel Cutout Shape: Round (required for panel mounting)

Secondary Compatibility Considerations:

• Current Rating: Substitute current must not exceed circuit design limits
• Millicandela Rating: Substitute brightness should provide adequate visibility
• Wavelength - Peak: Substitute wavelength should remain within green spectrum range
• Viewing Angle: Substitute viewing angle affects visibility in specific applications
• Panel Cutout Dimensions: Substitute cutout size must accommodate existing panel openings or allow for minor mechanical adaptation

The L65DG24L meets the primary compatibility criteria as a green 24V LED with PC pin termination and round panel cutout. Secondary parameter variations exist and are documented in the Parameter Comparison table below.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: L65DG24L

The L65DG24L is the designated substitute for the obsolete 405-BG24H-O based on the following engineering factors:

1. Voltage Compatibility: Both components operate at 24V, ensuring direct circuit compatibility without modification to power supply or current-limiting resistor calculations.

2. Termination Compatibility: PC pin termination on both components allows direct connection to existing PCB layouts or panel-mount sockets without adapter requirements.

3. Color and Spectrum: Green lamp color with peak wavelength of 570nm (compared to 565nm) maintains visual indication consistency within the green spectrum range.

4. RoHS3 Compliance: Both components meet ROHS3 requirements, ensuring regulatory compliance for new designs and replacements.

5. Active Production Status: The L65DG24L is in active production with 4902 units in stock, providing reliable long-term availability compared to the obsolete 405-BG24H-O.

Design Considerations for Implementation:

• Panel Cutout Modification: The L65DG24L requires a 0.315" (8.00mm) panel opening versus the original 0.25" (6.35mm). Existing panel cutouts must be enlarged or a mechanical adapter ring must be fabricated.

• Current Reduction: The L65DG24L draws a maximum of 10mA compared to the original 17mA. This reduction improves circuit efficiency and reduces thermal load. Existing current-limiting resistor values may require adjustment to maintain optimal brightness.

• Viewing Angle Narrowing: The L65DG24L provides a 30° viewing angle versus the original 60°. Applications requiring wide-angle visibility may experience reduced visibility at extreme angles. Assess application requirements before substitution.

• Brightness Reduction: The L65DG24L delivers 8mcd compared to the original 10mcd. This 20% reduction in brightness is within acceptable limits for most indicator applications but should be verified for visibility in high-ambient-light environments.

• Lens Diffusion: The L65DG24L features a diffused lens compared to the clear lens of the original. This diffusion improves light distribution uniformity and reduces glare, which may be beneficial for certain applications.

Frequently Asked Questions (FAQ)

Q: Can the L65DG24L be used as a direct drop-in replacement for the 405-BG24H-O?

A: The L65DG24L is functionally equivalent for 24V green LED indicator applications with PC pin termination. However, it is not a direct drop-in replacement due to panel cutout dimension differences (0.315" versus 0.25"). The panel opening must be enlarged from 6.35mm to 8.00mm, or a mechanical adapter must be used.

Q: What is the impact of the lower current rating on my circuit?

A: The L65DG24L draws a maximum of 10mA compared to the original 17mA. This reduction is beneficial for circuit efficiency and thermal management. If your circuit uses a fixed current-limiting resistor, the LED brightness will decrease proportionally. Recalculate the resistor value using Ohm's law (R = (V_supply - V_led) / I_desired) to maintain desired brightness levels.

Q: Will the narrower 30° viewing angle affect my application?

A: The L65DG24L provides a 30° viewing angle compared to the original 60°. This narrower angle concentrates light output in a smaller cone, which may reduce visibility at extreme angles. Assess your application's viewing geometry. If operators view the indicator from multiple angles, the reduced viewing angle may impact usability.

Q: Are there any compliance or certification differences?

A: Both the 405-BG24H-O and L65DG24L are ROHS3 compliant. The L65DG24L carries additional REACH Unaffected status. Both components are classified under HTSUS 8541.41.0000 and ECCN EAR99. No compliance barriers exist for substitution.

Q: What is the difference between the clear and diffused lenses?

A: The original 405-BG24H-O features a clear lens, while the L65DG24L features a diffused lens. The diffused lens scatters light more uniformly across the viewing angle, reducing glare and improving visibility in certain lighting conditions. The clear lens provides more concentrated light output. Choose based on your specific visibility requirements.

Q: Is the L65DG24L available in sufficient quantity for production?

A: Yes. The L65DG24L is in active production status with 4902 units currently in stock, ensuring reliable availability for both prototype and production quantities.

Q: What wavelength difference exists between these components?

A: The 405-BG24H-O has a peak wavelength of 565nm, while the L65DG24L has a peak wavelength of 570nm. Both wavelengths fall within the green spectrum range and are visually indistinguishable to the human eye. No functional impact exists for indicator applications.