AA3528ASURCK Equivalent & Substitute Parts

Part Overview

The AA3528ASURCK is a red surface-mount LED indicator manufactured by Kingbright, featuring a 630nm dominant wavelength and 250mcd luminous intensity. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing production and maintenance applications. The part operates at 1.95V forward voltage with a 20mA test current and is housed in a 2-PLCC surface-mount package with clear lens configuration.

Substiute Parts

AA3528ASURCK

KingbrightIn Stock: 2139AA3528ASURCK Datasheet

Current PartRFQ

AA3528SURSK

KingbrightIn Stock: 793AA3528SURSK Datasheet

SimilarRFQ

SML-LX2832SIC-TR

Lumex Opto/Components Inc.In Stock: 2349SML-LX2832SIC-TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AA3528ASURCK are identified based on strict electrical and mechanical parameter alignment within the red LED indicator category. The substitution logic is based on the following critical parameters:

Electrical Parameters:

• Color: Red
• Wavelength range: 630nm dominant wavelength (±20nm tolerance acceptable)
• Luminous intensity: 250mcd minimum
• Forward voltage: 1.95V to 2.0V range
• Test current: 20mA

Mechanical Parameters:

• Package type: 2-PLCC surface-mount
• Lens configuration: Clear, round with flat top
• Lens diameter: 2.40mm
• Physical dimensions: 3.20mm L x 2.80mm W
• Height: 2.10mm maximum

Compliance Parameters:

• RoHS3 compliance required
• REACH unaffected status

Parts meeting these criteria are classified as direct parametric equivalents. Parts with reduced luminous intensity (100mcd) are classified as similar alternatives with functional limitations.

Parameter Comparison

Engineering Selection Recommendations

AA3528SURSK (Kingbright)

This part is a Kingbright product within the same AA3528 base series and maintains active product status. It shares identical electrical characteristics (1.95V forward voltage, 20mA test current) and mechanical specifications (2-PLCC package, 3.20mm x 2.80mm dimensions, 2.10mm height). The primary difference is reduced luminous intensity at 100mcd compared to the 250mcd of the main part. This substitute is suitable for applications where lower brightness is acceptable. RoHS3 compliance and MSL 3 rating provide improved moisture handling compared to the main part's MSL 4 rating.

SML-LX2832SIC-TR (Lumex Opto/Components Inc.)

This part is a parametric equivalent from an alternative manufacturer with active product status. It maintains the 250mcd luminous intensity requirement and shares identical mechanical specifications (2-PLCC package, 3.20mm x 2.80mm dimensions, 2.10mm height, 120° viewing angle). Forward voltage is 2V, representing a 0.05V increase from the main part's 1.95V specification. Peak wavelength is 636nm, within acceptable red LED range. RoHS3 compliance and MSL 3 rating are provided. This substitute is suitable for direct replacement in applications where the forward voltage tolerance accommodates the 2V specification.

Frequently Asked Questions (FAQ)

Q: Can AA3528SURSK be used as a direct replacement for AA3528ASURCK?

A: AA3528SURSK shares identical electrical and mechanical specifications with the main part, including 1.95V forward voltage, 20mA test current, and 2-PLCC package configuration. The primary difference is luminous intensity at 100mcd versus 250mcd. Selection depends on brightness requirements of the application. Both parts are RoHS3 compliant and surface-mount compatible.

Q: What is the key difference between AA3528SURSK and SML-LX2832SIC-TR?

A: Both parts maintain 250mcd luminous intensity and identical mechanical dimensions. The primary differences are manufacturer (Kingbright versus Lumex), forward voltage (1.95V versus 2V), and peak wavelength (650nm versus 636nm). Both are RoHS3 compliant and suitable for 2-PLCC surface-mount applications.

Q: Is the 0.05V forward voltage difference between AA3528ASURCK and SML-LX2832SIC-TR significant?

A: The forward voltage difference of 0.05V (1.95V versus 2V) is within typical LED operating tolerances. Circuit design must accommodate this specification. Verify that the application's current-limiting resistor and power supply design can operate at 2V forward voltage without exceeding maximum current ratings.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. AA3528SURSK and SML-LX2832SIC-TR are both RoHS3 compliant, matching the compliance status of the main part AA3528ASURCK.

Q: What is the difference in moisture sensitivity between the main part and substitutes?

A: AA3528ASURCK has MSL 4 (72 hours), while both AA3528SURSK and SML-LX2832SIC-TR have MSL 3 (168 hours). MSL 3 provides extended moisture protection, reducing risk during storage and handling.

Q: Can these parts be used interchangeably in existing PCB designs?

A: All three parts share identical 2-PLCC package configuration, 3.20mm x 2.80mm footprint, and 2.10mm maximum height. PCB layout compatibility is maintained. Electrical circuit compatibility depends on forward voltage tolerance and brightness requirements of the specific application.