LS A676-P2S1-1-0-20-R33-Z Equivalent & Substitute Parts

Part Overview

The LS A676-P2S1-1-0-20-R33-Z is a red 633nm LED indication component manufactured by ams-OSRAM USA INC. in the SIDELED® series. This surface mount, right-angle LED features a 2.40mm round lens with flat top, rated at 140 millicandela with a 120° viewing angle. The component is packaged as a 2-SMD Boomerang configuration and operates at 2V forward voltage with 20mA test current.

The product status is listed as Obsolete. Locating equivalent substitute components is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this LED specification.

Substiute Parts

LS A676-P2S1-1-0-20-R33-Z

ams-OSRAM USA INC.In Stock: 18445LS A676-P2S1-1-0-20-R33-Z Datasheet

Current PartRFQ

AA4040SURSK

KingbrightIn Stock: 135783AA4040SURSK Datasheet

Parametric EquivalentRFQ

XZMDK67S

SunLEDIn Stock: 41567XZMDK67S Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the LS A676-P2S1-1-0-20-R33-Z are selected based on strict electrical and mechanical compatibility criteria. The following parameters establish the substitution basis:

Critical Matching Parameters:

• Color: Red
• Lens Style: Round with Flat Top
• Lens Size: 2.40mm Dia
• Lens Color: Colorless
• Lens Transparency: Clear
• Mounting Type: Surface Mount, Right Angle
• Package / Case: 2-SMD, Boomerang
• Size / Dimension: 4.00mm L x 3.60mm W
• Current - Test: 20mA
• Viewing Angle: 120°
• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

Allowable Parameter Variations:

• Wavelength - Dominant: 630nm to 633nm (red spectrum range)
• Wavelength - Peak: 645nm (consistent across all parts)
• Voltage - Forward (Vf) (Typ): 1.95V to 2V (within standard LED tolerance)
• Millicandela Rating: 140mcd to 150mcd (brightness within acceptable range)
• Height (Max): 4.00mm to 4.20mm (mechanical fit tolerance)
• Moisture Sensitivity Level (MSL): 2 to 3 (both acceptable for standard assembly)

The identified substitute parts meet all critical parameters and fall within allowable electrical and mechanical tolerances for direct substitution in the LS A676-P2S1-1-0-20-R33-Z application.

Parameter Comparison

Engineering Selection Recommendations

Both AA4040SURSK (Kingbright) and XZMDK67S (SunLED) are active product alternatives to the obsolete LS A676-P2S1-1-0-20-R33-Z. Both substitute components satisfy all critical electrical and mechanical parameters required for direct substitution.

Compliance Status: All three components maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory alignment for current manufacturing standards.

Product Availability: The LS A676-P2S1-1-0-20-R33-Z is obsolete. The AA4040SURSK maintains 135,676 units in stock inventory, while the XZMDK67S maintains 41,539 units in stock inventory. Both active alternatives provide supply chain continuity.

Electrical Performance: The substitute components operate at 1.95V forward voltage compared to the original 2V specification, representing a 0.05V reduction within standard LED operating tolerance. Both substitutes deliver millicandela ratings of 148mcd to 150mcd, exceeding the original 140mcd specification. Dominant wavelength shifts from 633nm to 630nm remain within the red spectrum range and are imperceptible in indication applications.

Mechanical Compatibility: Both substitutes maintain identical footprint dimensions (4.00mm L x 3.60mm W) and identical lens specifications (2.40mm round with flat top, colorless, clear). Height variation (4.00mm versus 4.20mm) falls within standard PCB assembly tolerances.

Packaging Consideration: The original component is supplied in Cut Tape (CT) packaging. Both substitutes are supplied in Tape & Reel (TR) packaging, which is standard for high-volume production environments and compatible with automated assembly equipment.

Frequently Asked Questions (FAQ)

Q: Can AA4040SURSK and XZMDK67S be used interchangeably with LS A676-P2S1-1-0-20-R33-Z?

A: Yes. Both components meet all critical electrical and mechanical parameters. Forward voltage operates within 0.05V of the original specification. Millicandela ratings exceed the original 140mcd specification. Lens geometry, mounting type, and package footprint are identical. Both components are ROHS3 compliant and REACH unaffected.

Q: What is the difference between the two substitute parts?

A: AA4040SURSK (Kingbright) and XZMDK67S (SunLED) are functionally equivalent. Both operate at 1.95V forward voltage and deliver 148-150mcd brightness. Both feature identical 2.40mm round lenses with flat tops and 120° viewing angles. The primary difference is manufacturer source and inventory availability. AA4040SURSK maintains higher stock levels (135,676 units) compared to XZMDK67S (41,539 units).

Q: Does the 0.05V forward voltage difference affect circuit design?

A: No. The 1.95V forward voltage of the substitute components falls within standard LED operating tolerance and does not require circuit redesign. Current-limiting resistor calculations remain valid for 20mA test current applications.

Q: Are the substitute components available in Cut Tape packaging?

A: Both AA4040SURSK and XZMDK67S are supplied in Tape & Reel (TR) packaging. Cut Tape (CT) packaging is not available for these active alternatives. Tape & Reel packaging is standard for automated assembly and is compatible with standard pick-and-place equipment.

Q: What is the impact of the 0.20mm height difference?

A: The substitute components measure 4.00mm maximum height compared to the original 4.20mm specification. This 0.20mm reduction is within standard PCB assembly tolerances and does not affect mechanical fit or optical performance in right-angle mounting applications.

Q: Do the substitute components have different moisture sensitivity requirements?

A: The original LS A676-P2S1-1-0-20-R33-Z specifies MSL 2 (1 Year). Both substitutes specify MSL 3 (168 Hours). MSL 3 components require storage in dry conditions for 168 hours before reflow soldering. Standard moisture-controlled storage and handling procedures accommodate this requirement without process changes.

Q: Are there any wavelength differences that affect visual appearance?

A: The dominant wavelength shifts from 633nm to 630nm in the substitute components. Both wavelengths are within the red spectrum range. The peak wavelength remains 645nm across all components. This 3nm shift in dominant wavelength is imperceptible in indication applications and does not affect visual color appearance.