3ADL-S

Part Overview

The 3ADL-S is an amber LED indication component manufactured by Bivar Inc., designed for discrete 2V radial applications in through-hole mounting configurations. This part is currently listed as Obsolete, necessitating identification of functionally equivalent substitute components for ongoing production requirements and design updates. The part operates at a forward voltage of 2V with a test current of 2mA and provides amber light output at 605nm peak wavelength with 4 millicandela brightness rating.

Substiute Parts

3ADL-S

Bivar Inc.In Stock: 11303ADL-S Datasheet

Current PartRFQ

SLR-322DU3F

Rohm SemiconductorIn Stock: 2156SLR-322DU3F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The identification of suitable substitute parts for the 3ADL-S is determined by the following critical parameters:

Electrical Compatibility: Forward voltage (Vf) of 2V is the primary electrical constraint. The substitute part must operate within the same voltage class to ensure direct circuit compatibility without requiring redesign of current-limiting networks.

Optical Output Characteristics: Peak wavelength of 605nm (amber/orange spectrum) defines the color output. The millicandela rating of 4mcd establishes the minimum brightness requirement for indication applications. Substitutes must maintain this wavelength range and brightness threshold.

Physical Form Factor: Through-hole mounting with radial package configuration is mandatory for mechanical compatibility with existing PCB designs. The T-1 lens size (3mm) and round domed lens style ensure optical consistency and mounting compatibility.

Lens Transparency: The diffused lens characteristic is integral to the optical function and must be preserved in substitutes.

The SLR-322DU3F from Rohm Semiconductor meets these substitution criteria through compatibility in forward voltage, wavelength range, mounting type, package style, and lens characteristics.

Parameter Comparison

Engineering Selection Recommendations

The SLR-322DU3F is suitable as a substitute for the obsolete 3ADL-S based on the following factors:

Product Status Alignment: The SLR-322DU3F carries Active product status, ensuring ongoing manufacturer support, continued production, and supply chain availability, contrasting with the Obsolete status of the original component.

Compliance and Certifications: Both components share identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications, confirming regulatory and tariff equivalence. The SLR-322DU3F is ROHS3 Compliant and REACH Unaffected, establishing full environmental compliance for modern manufacturing standards.

Electrical Equivalence: Identical forward voltage (2V) and matching wavelength (605nm) ensure direct functional compatibility in existing circuit designs without modification to current-limiting resistors or power supply configurations.

Physical Compatibility: Matching through-hole radial package style, T-1 lens size, round domed lens style, and diffused transparency ensure direct mechanical compatibility with existing PCB designs and mounting fixtures.

Frequently Asked Questions (FAQ)

Q: Can the SLR-322DU3F directly replace the 3ADL-S without circuit modifications? A: Yes. Both components operate at 2V forward voltage with identical wavelength characteristics (605nm), allowing direct substitution in existing circuit designs without resistor or power supply adjustments.

Q: What is the difference between amber and orange color designation? A: Both the 3ADL-S and SLR-322DU3F operate at 605nm peak wavelength in the amber-orange spectrum. The color designation reflects the subjective appearance of the light output at this wavelength. The electrical and optical specifications remain functionally equivalent.

Q: Does the higher millicandela rating (6.3mcd vs 4mcd) create compatibility issues? A: No. The higher brightness of the SLR-322DU3F (6.3mcd) exceeds the original specification (4mcd) and provides improved visibility. This is a beneficial characteristic when substituting obsolete components.

Q: Are the dimensional differences significant? A: The height difference (5.40mm versus 5.97mm) is within acceptable tolerance for through-hole mounting applications. Both components use identical T-1 3mm lens size and radial package configuration, ensuring mechanical compatibility with existing PCB designs.

Q: Is the SLR-322DU3F available for immediate procurement? A: The SLR-322DU3F carries Active product status and is currently in stock, providing supply chain continuity for redesigned or updated production requirements.