1.8RCL LED Red Clear 1.8MM Through-Hole

Part Overview

The 1.8RCL is a red LED indication component manufactured by Bivar Inc., designed for discrete applications requiring a 2.1V radial through-hole configuration. This component features a clear lens with a 1.80mm diameter domed top and is rated at 1 millicandela. The product status is listed as Obsolete, necessitating identification of compatible substitute components that maintain electrical and mechanical compatibility for continued system integration and repair applications.

Substiute Parts

1.8RCL

Bivar Inc.In Stock: 7301.8RCL Datasheet

Current PartRFQ

1.8RD

Bivar Inc.In Stock: 11031.8RD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The 1.8RD is qualified as a direct substitute for the 1.8RCL based on the following critical parameters that ensure functional compatibility:

Electrical Compatibility:

• Forward voltage (Vf) remains constant at 2.1V
• Peak wavelength maintained at 700nm (red spectrum)
• Same manufacturer (Bivar Inc.) ensures consistent manufacturing standards

Mechanical Compatibility:

• Identical lens size: 1.80mm Dia
• Matching lens style: Round with Domed Top
• Radial through-hole mounting package
• Compatible height envelope

Differences Permitted for Substitution: The 1.8RD differs in lens transparency (diffused versus clear), lens color (red versus colorless), millicandela rating (2mcd versus 1mcd), test current (20mA versus 2mA), viewing angle (50° versus 35°), and height maximum (3.00mm versus 3.50mm). These variations remain within acceptable tolerances for component substitution in discrete LED indication circuits where the primary functional requirements are electrical voltage compatibility, wavelength consistency, and mechanical mounting envelope.

Parameter Comparison

Engineering Selection Recommendations

The 1.8RD substitute is recommended for applications currently utilizing the obsolete 1.8RCL component. The substitute maintains active product status with Bivar Inc., ensuring availability for procurement and continued supply chain viability. Both components achieve equivalent electrical performance through identical forward voltage specification and peak wavelength characteristics. The 1.8RD provides enhanced luminous intensity (2mcd versus 1mcd) and an expanded viewing angle (50° versus 35°), which represents an upgrade path for existing designs. The substitution is supported by identical package geometry and mounting interface compatibility, eliminating PCB redesign requirements for through-hole applications.

Frequently Asked Questions (FAQ)

Q: Can the 1.8RD directly replace the 1.8RCL in existing circuit designs? A: Yes. Both components share identical forward voltage (2.1V), peak wavelength (700nm), lens size (1.80mm Dia), lens style (round domed top), and radial through-hole mounting. Mechanical envelope compatibility is confirmed with the 1.8RD height maximum of 3.00mm fitting within the original 3.50mm specification.

Q: What is the primary difference between these two components? A: The primary optical difference is lens transparency: the 1.8RCL features a clear lens, while the 1.8RD features a diffused lens. The 1.8RD also provides higher luminous intensity (2mcd versus 1mcd) and a wider viewing angle (50° versus 35°). These differences do not preclude electrical substitution in discrete LED indication circuits.

Q: Are there compliance or certification differences between these parts? A: The 1.8RD carries ROHS3 Compliant certification. Both components share identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications, confirming regulatory parity for supply and use.

Q: What is the difference in the test current specification? A: The 1.8RCL specifies 2mA test current, while the 1.8RD specifies 20mA test current. This difference reflects the higher luminous intensity rating of the substitute (2mcd versus 1mcd). The test current parameter does not limit circuit implementation, as actual operating current is determined by series resistance in the design circuit, not by component rating.

Q: Does the diffused lens of the 1.8RD affect compatibility with optical or mechanical assemblies designed for the clear lens 1.8RCL? A: The lens transparency difference (clear versus diffused) may affect light distribution characteristics. Optical integration testing is recommended for applications where precise light distribution patterns are critical design parameters. Mechanical compatibility is unchanged, as both components share identical lens size, style, and mounting geometry.