AA3528ASRC Equivalent & Substitute Parts

Part Overview

The AA3528ASRC is a red 640nm LED indication component manufactured by Kingbright in a 2-PLCC surface mount package. This part is classified as obsolete, necessitating identification of equivalent substitute components for ongoing production and maintenance applications. The AA3528ASRC operates at a forward voltage of 1.85V with a test current of 20mA and delivers 150 millicandela of luminous intensity through a clear, round lens with flat top configuration.

Due to its obsolete status, equivalent substitute parts with matching or compatible electrical and mechanical parameters are required to maintain design continuity and ensure component availability for new builds and field replacements.

Substiute Parts

AA3528ASRC

KingbrightIn Stock: 758AA3528ASRC Datasheet

Current PartRFQ

AA3528SRS

KingbrightIn Stock: 847AA3528SRS Datasheet

Parametric EquivalentRFQ

67-21-R7SC-T1R1S1B7E-2T8-AM

Everlight Electronics Co LtdIn Stock: 68467-21-R7SC-T1R1S1B7E-2T8-AM Datasheet

Parametric EquivalentRFQ

LS T676-R1S1-1-Z

ams-OSRAM USA INC.In Stock: 46092LS T676-R1S1-1-Z Datasheet

Parametric EquivalentRFQ

VFHV1104LS-TR

Stanley Electric CoIn Stock: 1112VFHV1104LS-TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AA3528ASRC is determined by strict adherence to the following critical parameters:

Mechanical Compatibility Parameters:

• Package type: 2-PLCC surface mount
• Physical dimensions: 3.20mm L x 2.80mm W, 2.10mm maximum height
• Lens configuration: Round with flat top, 2.40mm diameter
• Mounting type: Surface mount

Electrical Compatibility Parameters:

• Forward voltage range: 1.85V to 2.05V (acceptable variance for red LED indication circuits)
• Test current: 20mA
• Luminous intensity: 150mcd to 170mcd (acceptable variance for indication applications)
• Wavelength - Dominant: 616nm to 640nm (red spectrum)
• Viewing angle: 120°

Regulatory Compliance Parameters:

• RoHS3 compliance required
• REACH unaffected status
• ECCN: EAR99
• HTSUS: 8541.41.0000

All substitute parts listed maintain identical mechanical footprints and package configurations, ensuring direct PCB compatibility. Electrical parameters fall within acceptable tolerances for red LED indication circuits. All substitutes maintain full regulatory compliance with the original component.

Parameter Comparison

Engineering Selection Recommendations

AA3528SRS (Kingbright)

The AA3528SRS is a direct parametric equivalent to the AA3528ASRC, manufactured by the same supplier. Both components share identical electrical specifications (1.85V forward voltage, 150mcd luminous intensity, 640nm dominant wavelength) and mechanical configurations. The AA3528SRS is classified as obsolete, matching the status of the primary component. This part is suitable for applications requiring exact electrical and optical performance matching. Moisture sensitivity level is improved (MSL 3 versus MSL 4), providing enhanced reliability in storage and handling.

67-21-R7SC-T1R1S1B7E-2T8-AM (Everlight Electronics Co Ltd)

The 67-21-R7SC-T1R1S1B7E-2T8-AM is an active product offering higher luminous intensity (168mcd versus 150mcd) with a slightly elevated forward voltage (2.05V versus 1.85V). The dominant wavelength shifts to 630nm, representing a slight shift toward the orange-red spectrum. This component is suitable for applications where increased brightness is acceptable and forward voltage tolerance permits the 0.2V increase. Active product status ensures long-term availability.

LS T676-R1S1-1-Z (ams-OSRAM USA INC.)

The LS T676-R1S1-1-Z is an active TOPLED® series component with forward voltage of 2V and luminous intensity of 168mcd. The dominant wavelength is 633nm, positioned between the original component and the Everlight option. This part offers the highest inventory availability (46,014 pieces) and improved moisture sensitivity level (MSL 2). Active product status and established supply chain make this option suitable for new designs and high-volume applications.

VFHV1104LS-TR (Stanley Electric Co)

The VFHV1104LS-TR is an active product from the 1104LS series with forward voltage of 2V and luminous intensity of 170mcd. The dominant wavelength is 616nm, representing the shortest wavelength in the substitute group and the most orange-shifted appearance. This component offers the highest luminous intensity specification and is packaged in Tape & Reel format. Active product status and established manufacturing ensure availability for production applications.

Selection Basis:

Component selection is determined by product status (active versus obsolete), regulatory compliance (all options maintain ROHS3 compliance and REACH unaffected status), and availability requirements. For applications requiring exact electrical matching, AA3528SRS is appropriate. For new designs prioritizing long-term availability and supply chain stability, LS T676-R1S1-1-Z or VFHV1104LS-TR are recommended due to active product status and established manufacturing relationships.

Frequently Asked Questions (FAQ)

Q: Can the AA3528SRS be used as a direct replacement for the AA3528ASRC?

A: Yes. The AA3528SRS is a parametric equivalent with identical electrical specifications (1.85V forward voltage, 150mcd luminous intensity, 640nm dominant wavelength) and mechanical configuration (2-PLCC package, 3.20mm x 2.80mm x 2.10mm dimensions). Both components are classified as obsolete. The primary difference is improved moisture sensitivity level (MSL 3 versus MSL 4).

Q: What is the forward voltage tolerance when substituting the AA3528ASRC with active products?

A: The substitute active products operate at forward voltages between 2V and 2.05V, compared to the original 1.85V. This represents a 0.15V to 0.2V increase. Circuit designs must accommodate this voltage variance through appropriate current-limiting resistor adjustment or confirmation that the LED driver circuit tolerates the higher forward voltage specification.

Q: Are all substitute parts mechanically compatible with the original PCB layout?

A: Yes. All substitute parts maintain identical 2-PLCC package configuration with matching physical dimensions (3.20mm L x 2.80mm W, 2.10mm maximum height) and lens specifications (2.40mm diameter round lens with flat top). Direct PCB footprint compatibility is assured.

Q: What is the difference in luminous intensity between the original and substitute parts?

A: The AA3528ASRC and AA3528SRS both specify 150mcd. The active substitute products specify higher luminous intensity: 67-21-R7SC-T1R1S1B7E-2T8-AM (168mcd), LS T676-R1S1-1-Z (168mcd), and VFHV1104LS-TR (170mcd). This represents a 12% to 13% increase in brightness, which is acceptable for indication applications where increased visibility is not detrimental.

Q: How do the wavelength specifications differ among substitute options?

A: The original AA3528ASRC specifies 640nm dominant wavelength (660nm peak). Substitute parts range from 616nm to 640nm dominant wavelength. The LS T676-R1S1-1-Z (633nm) and 67-21-R7SC-T1R1S1B7E-2T8-AM (630nm) provide closest wavelength matching. The VFHV1104LS-TR (616nm) produces a more orange-shifted appearance. All wavelengths remain within the red spectrum suitable for indication applications.

Q: What is the significance of product status (Active versus Obsolete)?

A: Active products are in current production with established supply chains and long-term availability assurance. Obsolete products have limited remaining inventory and no ongoing manufacturing. For new designs and high-volume applications, active products (67-21-R7SC-T1R1S1B7E-2T8-AM, LS T676-R1S1-1-Z, VFHV1104LS-TR) are recommended. For maintenance and field replacement of existing designs, obsolete equivalents (AA3528SRS) may be appropriate if inventory is available.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, matching the regulatory compliance of the original AA3528ASRC component.

Q: What packaging options are available for the substitute parts?

A: AA3528SRS is available in Cut Tape (CT) and Digi-Reel® packaging. LS T676-R1S1-1-Z is available in Cut Tape (CT) and Digi-Reel® packaging. VFHV1104LS-TR is available in Tape & Reel (TR) packaging. 67-21-R7SC-T1R1S1B7E-2T8-AM packaging specification is not provided in the available data.

Q: Which substitute part offers the best long-term availability?

A: The LS T676-R1S1-1-Z offers the highest inventory availability (46,014 pieces) and is classified as an active product in the TOPLED® series. This component is recommended for applications requiring maximum supply chain stability and long-term sourcing assurance.