1.8HCL LED Red Clear 1.8MM Through Hole

Part Overview

The Bivar Inc. 1.8HCL is a red LED indicator with clear lens, rated at 1.8mm diameter for through-hole mounting applications. This component is classified as obsolete and has been superseded by active production alternatives. Sourcing equivalent or substitute parts is necessary to maintain design continuity and ensure supply chain reliability for ongoing production or repair applications.

Substiute Parts

1.8HCL

Bivar Inc.In Stock: 8731.8HCL Datasheet

Current PartRFQ

1.8HD

Bivar Inc.In Stock: 8541.8HD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The Bivar Inc. 1.8HD qualifies as a functional substitute for the 1.8HCL based on matching core electrical and mechanical parameters. Both parts share the following critical characteristics that enable substitution:

Matching Parameters:

• Same lens diameter (1.80mm Dia)
• Identical forward voltage (2V typical)
• Identical peak wavelength (625nm - red spectrum)
• Same mounting type (Through Hole radial)
• Identical maximum height (3.00mm)
• Same moisture sensitivity rating (MSL 1 - Unlimited)

Variant Parameters: The 1.8HD differs in lens transparency (diffused vs. clear), current rating (20mA vs. 2mA test current), and millicandela rating (20mcd vs. 4.5mcd), reflecting its active production status and enhanced specifications.

Parameter Comparison

Engineering Selection Recommendations

The 1.8HD is suitable as a substitute for the obsolete 1.8HCL in applications requiring red LED indication at 1.8mm diameter and through-hole mounting. Both parts maintain identical forward voltage (2V) and peak wavelength (625nm), ensuring compatibility with existing bias circuits and optical alignment requirements.

The 1.8HD carries ROHS3 compliance certification, meeting current environmental regulatory standards for component qualification. The increase in current rating (20mA vs. 2mA) and luminous intensity (20mcd vs. 4.5mcd) reflects the active production variant, providing enhanced brightness performance without circuit modification, provided the circuit current source permits the higher operating current.

The transition from clear to diffused lens transparency in the 1.8HD affects light distribution characteristics; designs sensitive to specific luminous intensity distribution should evaluate optical compatibility during qualification.

Frequently Asked Questions (FAQ)

Q: Are the 1.8HCL and 1.8HD mechanically interchangeable? A: Yes. Both parts have identical lens diameter (1.80mm), maximum height (3.00mm), and radial through-hole mounting configuration, permitting direct footprint interchange.

Q: What is the primary difference between these parts? A: The 1.8HD features a diffused lens with higher brightness output (20mcd vs. 4.5mcd) and current rating (20mA vs. 2mA), while the 1.8HCL has a clear lens. Both maintain the same forward voltage and red wavelength.

Q: Can I use the 1.8HD as a substitute in a circuit designed for the 1.8HCL? A: The 1.8HD is compatible from an electrical standpoint, as both parts operate at 2V forward voltage and the same peak wavelength (625nm). Circuit current sourcing capability must accommodate the 20mA test current of the 1.8HD.

Q: Does the diffused lens on the 1.8HD affect visual performance? A: The diffused lens on the 1.8HD provides a wider viewing angle (50° vs. 35°) and more uniform light distribution compared to the clear lens on the 1.8HCL. Applications requiring narrow-angle, high-intensity indication should evaluate this specification change.

Q: What are the compliance and availability considerations? A: The 1.8HD is in active production with ROHS3 compliance certification. The 1.8HCL is obsolete status. For new designs and ongoing production support, the 1.8HD is the recommended selection.