ASMT-AR00-ARS00 Equivalent & Substitute Parts

Part Overview

The ASMT-AR00-ARS00 is a red LED (628nm) surface mount component rated at 1W with a 2-SMD gull wing exposed pad package. This part is classified as obsolete, making substitute identification necessary for ongoing production and maintenance applications. The component delivers 73 lm/W efficiency at 350mA test current with a forward voltage of 2.1V typical and a 140° viewing angle.

Substiute Parts

ASMT-AR00-ARS00

Broadcom LimitedIn Stock: 8098ASMT-AR00-ARS00 Datasheet

Current PartRFQ

ASMT-AR00-AST00

Broadcom LimitedIn Stock: 5129ASMT-AR00-AST00 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ASMT-AR00-ARS00 is determined by the following critical parameters:

• Color and Wavelength: Red spectrum LEDs within 620nm–635nm range are functionally equivalent
• Electrical Characteristics: Forward voltage (Vf) of 2.1V and maximum current rating of 500mA must be maintained
• Optical Performance: Viewing angle of 140° and luminous flux output within acceptable operational ranges
• Package Compatibility: 2-SMD gull wing configuration with matching footprint and height specifications
• Compliance Standards: RoHS3 compliance and MSL rating for manufacturing process compatibility

The ASMT-AR00-AST00 meets these substitution criteria as a manufacturer-recommended alternative from the same base product family (ASMT-AR00).

Parameter Comparison

Engineering Selection Recommendations

The ASMT-AR00-AST00 is the manufacturer-recommended substitute for the obsolete ASMT-AR00-ARS00. Both components share identical electrical ratings (2.1V Vf, 350mA test current, 500mA maximum) and optical characteristics (140° viewing angle, red spectrum). The substitute demonstrates improved luminous efficiency (88 lm/W versus 73 lm/W) and higher luminous flux output (65lm versus 54lm), providing enhanced performance within the same electrical envelope.

The ASMT-AR00-AST00 maintains active product status, ensuring supply chain availability and manufacturing support. Both components are RoHS3 compliant and suitable for surface mount assembly processes. The primary consideration is the footprint dimension difference: the substitute measures 7.40mm x 7.40mm versus the main part's 8.00mm diameter, requiring PCB layout verification for mechanical fit. Height specifications remain identical at 4.20mm maximum seated height.

Frequently Asked Questions (FAQ)

Q: Can the ASMT-AR00-AST00 directly replace the ASMT-AR00-ARS00 in existing designs?

A: Electrical compatibility is confirmed (identical Vf, current ratings, and viewing angle). PCB footprint verification is required due to dimensional differences: the substitute is 7.40mm x 7.40mm versus the original 8.00mm diameter. Reflow profile compatibility is maintained for both 2-SMD gull wing packages.

Q: What is the significance of the wavelength difference (628nm versus 625nm)?

A: Both wavelengths fall within the red spectrum range (620nm–635nm) and are visually indistinguishable in typical lighting applications. The 625nm wavelength of the substitute is within the acceptable red LED spectrum for color-critical applications.

Q: How do the MSL ratings differ between these parts?

A: The main part carries MSL 2 (1 Year storage), while the substitute is MSL 2A (4 Weeks storage). MSL 2A requires more stringent moisture control during storage and handling. Verify that manufacturing processes and storage conditions accommodate the more restrictive MSL rating.

Q: Is the improved efficiency of the substitute a concern for circuit design?

A: The ASMT-AR00-AST00 delivers 88 lm/W compared to 73 lm/W, resulting in higher light output at identical current levels. This represents improved performance and does not require circuit redesign. Current-limiting resistor values remain valid for the same forward voltage specification.

Q: Are there package compatibility issues with the gull wing configuration?

A: Both parts use 2-SMD gull wing packages with identical 4.20mm maximum height. The footprint dimension change (8.00mm to 7.40mm) requires PCB layout adjustment. Reflow soldering parameters are compatible for both configurations.