R5HDL LED Red Diffused Through-Hole Indicator

Part Overview

The Bivar Inc. R5HDL is a red LED discrete indicator designed for through-hole mounting applications with a 2V forward voltage and 1mcd luminous intensity. This component is classified as obsolete, making identification of compatible substitute parts essential for system maintenance and design continuity. The R5HDL operates as a standard red indication LED with diffused lens characteristics, suitable for applications requiring moderate brightness with wide viewing angles.

Substiute Parts

R5HDL

Bivar Inc.In Stock: 788R5HDL Datasheet

Current PartRFQ

LTL-433HR

Lite-On Inc.In Stock: 948LTL-433HR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete R5HDL is permissible with components meeting the following core parameters:

Primary Compatibility Criteria:

• Color: Red
• Lens Transparency: Diffused
• Mounting Type: Through Hole
• Package / Case: Radial
• Configuration: Standard
• Voltage - Forward (Vf) (Typ): 2V
• Lens Style: Rectangle with Flat Top

Secondary Considerations: Substitute parts may exhibit variations in:

• Millicandela Rating: The R5HDL operates at 1mcd; substitutes may range higher
• Current - Test: The R5HDL specifies 2mA; substitutes may require different test currents
• Viewing Angle: The R5HDL provides 120°; substitutes may offer wider angles
• Wavelength - Peak: The R5HDL operates at 625nm; substitutes may operate at proximate wavelengths within the red spectrum
• Physical dimensions: Lens size and height may vary slightly within mechanical tolerance ranges
• Moisture Sensitivity Level: May vary based on supplier specifications

The LTL-433HR from Lite-On Inc. qualifies as a direct substitute based on alignment with primary compatibility criteria.

Parameter Comparison

Engineering Selection Recommendations

The LTL-433HR from Lite-On Inc. is the qualified substitute for the obsolete R5HDL. Selection is supported by:

Product Status: The LTL-433HR maintains active production status, ensuring availability and continuity of supply. The R5HDL obsolescence necessitates this transition.

Regulatory Compliance: The LTL-433HR holds ROHS3 compliance and REACH affected status, satisfying modern regulatory requirements for electronic components. Both components share EAR99 classification and identical HTSUS codes (8541.41.0000).

Functional Equivalence: Both components operate at identical forward voltage (2V) and share common lens transparency (diffused), lens style (rectangle with flat top), mounting method (through hole), and package configuration (radial).

Performance Characteristics: The LTL-433HR delivers increased luminous intensity (3.7mcd versus 1mcd), broader viewing angle (140° versus 120°), and slightly higher test current specification (10mA versus 2mA). These parameters represent operational enhancements rather than limitations to substitution compatibility.

Physical Compatibility: Lens dimensions and maximum height differ marginally (5.00mm x 2.00mm and 7.50mm versus 4.90mm x 1.90mm and 7.00mm). These variations remain within acceptable mechanical tolerances for through-hole mounting applications with standard PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can the LTL-433HR directly replace the R5HDL without circuit modifications? A: The LTL-433HR operates at the same forward voltage (2V) as the R5HDL, enabling direct substitution in circuits designed for the original component. The increased luminous intensity (3.7mcd) and test current (10mA) represent functional improvements compatible with existing designs.

Q: What are the physical dimension differences between the R5HDL and LTL-433HR? A: The LTL-433HR exhibits slightly larger dimensions: lens size increases from 4.90mm x 1.90mm to 5.00mm x 2.00mm, and maximum height increases from 7.00mm to 7.50mm. These differences are minimal and accommodate standard through-hole PCB mounting patterns.

Q: How do wavelength specifications compare between these components? A: The R5HDL specifies a peak wavelength of 625nm, while the LTL-433HR provides a dominant wavelength of 623nm and peak wavelength of 635nm. Both operate within the red spectrum with compatible visual color presentation for indication applications.

Q: Are there compliance or regulatory advantages to using the LTL-433HR? A: Yes. The LTL-433HR holds ROHS3 compliance and addresses REACH regulatory requirements, which are important for modern electronic system design. The R5HDL obsolescence status may create sourcing complications for compliant designs.

Q: What considerations apply to moisture sensitivity? A: Both components share Moisture Sensitivity Level 1 (Unlimited), indicating equivalent moisture resistance and identical handling and storage requirements throughout product lifecycle.

Q: Does the broader viewing angle of the LTL-433HR affect substitution suitability? A: The LTL-433HR provides a 140° viewing angle compared to the R5HDL's 120°. This represents an enhancement for indication applications, providing wider visibility without compromising functionality.