LS T676-Q1R2-1 Red LED 2-PLCC SMD Equivalent & Substitute Parts

Part Overview

The LS T676-Q1R2-1 is a red LED indication component manufactured by ams-OSRAM USA INC. in a 2-PLCC surface mount package. This part operates at 2V forward voltage with a dominant wavelength of 633nm and delivers 125.5mcd at 20mA test current. The component features a clear, colorless lens with 120° viewing angle and round flat-top lens style.

The LS T676-Q1R2-1 carries an obsolete product status. Locating equivalent or substitute components becomes necessary for ongoing production support, design refresh cycles, or when inventory depletion occurs. Active alternatives with identical or compatible electrical and mechanical parameters are available from the same manufacturer and qualified third-party suppliers.

Substiute Parts

LS T676-Q1R2-1

ams-OSRAM USA INC.In Stock: 932LS T676-Q1R2-1 Datasheet

Current PartRFQ

LS T676-P2S1-1-Z

ams-OSRAM USA INC.In Stock: 1031LS T676-P2S1-1-Z Datasheet

Parametric EquivalentRFQ

LS T676-Q1R2-1-Z

ams-OSRAM USA INC.In Stock: 63279LS T676-Q1R2-1-Z Datasheet

Parametric EquivalentRFQ

AA3528SRS

KingbrightIn Stock: 847AA3528SRS Datasheet

Parametric EquivalentRFQ

VFHR1104LS-TR

Stanley Electric CoIn Stock: 718VFHR1104LS-TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LS T676-Q1R2-1 is determined by strict alignment across the following critical parameters:

Mandatory Matching Parameters:

• Package / Case: 2-PLCC
• Mounting Type: Surface Mount
• Lens Size: 2.40mm Dia
• Lens Style: Round with Flat Top
• Lens Transparency: Clear
• Color: Red
• Viewing Angle: 120°
• Size / Dimension: 3.20mm L x 2.80mm W
• Height (Max): 2.10mm
• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

Electrical Parameters (Allowable Tolerance Range):

• Voltage - Forward (Vf) Typical: 1.85V to 2.0V
• Current - Test: 20mA
• Wavelength - Dominant: 632nm to 640nm
• Wavelength - Peak: 640nm to 660nm
• Millicandela Rating: 125.5mcd minimum

Substitute parts must satisfy all mandatory matching parameters and fall within the specified electrical tolerance ranges. Parts meeting these criteria are classified as direct parametric equivalents suitable for drop-in replacement in circuit designs originally specified for the LS T676-Q1R2-1.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: LS T676-Q1R2-1-Z

The LS T676-Q1R2-1-Z is the direct parametric equivalent manufactured by ams-OSRAM USA INC. This part maintains identical electrical specifications (2V forward voltage, 125.5mcd, 633nm dominant wavelength) and mechanical dimensions as the obsolete LS T676-Q1R2-1. The primary distinction is product status (Active) and packaging format (Tape & Reel). This part carries ROHS3 compliance and MSL 2 rating identical to the original. Selection of this part eliminates obsolescence risk while preserving design performance characteristics.

Secondary Recommendation: LS T676-P2S1-1-Z

The LS T676-P2S1-1-Z is an active ams-OSRAM product offering increased luminous intensity (140mcd versus 125.5mcd) while maintaining all other mechanical and electrical parameters. This part is suitable for applications where enhanced brightness is acceptable or beneficial. Forward voltage remains 2V, wavelength specifications remain 633nm dominant and 645nm peak. ROHS3 compliance and MSL 2 rating are maintained.

Alternative Recommendation: VFHR1104LS-TR

The VFHR1104LS-TR manufactured by Stanley Electric Co is an active product meeting all mechanical substitution criteria. Electrical parameters fall within acceptable tolerance: 2V forward voltage, 140mcd intensity, 632nm dominant wavelength. This part carries ROHS3 compliance. MSL rating differs (2A versus 2), reflecting different moisture sensitivity specifications. This part is suitable for applications where multi-source qualification is required.

Not Recommended: AA3528SRS

The AA3528SRS manufactured by Kingbright carries obsolete product status and MSL 3 rating (168 hours versus 1 year). While mechanical dimensions and package type match, the forward voltage specification (1.85V) and wavelength characteristics (640nm dominant, 660nm peak) deviate from the original design parameters. This part is suitable only for applications where the electrical parameter variations are explicitly acceptable.

Frequently Asked Questions (FAQ)

Q: Can LS T676-Q1R2-1-Z be used as a direct replacement for LS T676-Q1R2-1?

A: Yes. The LS T676-Q1R2-1-Z is a direct parametric equivalent. All electrical specifications (2V forward voltage, 20mA test current, 125.5mcd, 633nm dominant wavelength) and mechanical dimensions (2-PLCC package, 3.20mm L x 2.80mm W, 2.10mm height) are identical. The primary difference is packaging format (Tape & Reel versus bulk) and active product status. Circuit performance is equivalent.

Q: What is the difference between LS T676-Q1R2-1-Z and LS T676-P2S1-1-Z?

A: Both parts are manufactured by ams-OSRAM and share identical mechanical specifications and forward voltage (2V). The LS T676-P2S1-1-Z delivers higher luminous intensity (140mcd versus 125.5mcd). Selection depends on application brightness requirements. If the original design specified 125.5mcd, the LS T676-Q1R2-1-Z maintains exact performance. If increased brightness is acceptable, the LS T676-P2S1-1-Z provides enhanced intensity.

Q: Is VFHR1104LS-TR compatible with the original LS T676-Q1R2-1?

A: Yes, with qualification. The VFHR1104LS-TR meets all mechanical substitution criteria and maintains 2V forward voltage and 120° viewing angle. Luminous intensity is 140mcd (versus 125.5mcd original). Wavelength characteristics are 632nm dominant and 640nm peak, within acceptable tolerance of the original 633nm and 645nm specifications. MSL rating differs (2A versus 2). This part is suitable for applications where multi-source component qualification is acceptable.

Q: Why is AA3528SRS listed as a substitute if it has different electrical parameters?

A: The AA3528SRS meets all mandatory mechanical matching criteria (2-PLCC package, 2.40mm lens, 3.20mm x 2.80mm dimensions, 120° viewing angle, clear lens). However, forward voltage (1.85V versus 2V) and wavelength characteristics (640nm dominant versus 633nm) differ from the original specification. This part is suitable only for applications where these electrical parameter variations are explicitly acceptable or where the design can accommodate 1.85V forward voltage operation.

Q: What packaging formats are available for substitutes?

A: The LS T676-Q1R2-1 original part is supplied in bulk packaging. Active substitutes are available in Tape & Reel (TR) format: LS T676-Q1R2-1-Z, LS T676-P2S1-1-Z, and VFHR1104LS-TR. The AA3528SRS is available in Cut Tape (CT) and Digi-Reel® format. Tape & Reel packaging is standard for high-volume production environments. Packaging selection depends on assembly process requirements and volume specifications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification. The original LS T676-Q1R2-1 is also ROHS3 compliant. All parts maintain REACH Unaffected status. Regulatory compliance is maintained across all recommended substitutes.

Q: What is the significance of MSL (Moisture Sensitivity Level) differences?

A: MSL rating specifies the maximum time a component can be stored at uncontrolled humidity before requiring baking. The original LS T676-Q1R2-1 carries MSL 2 (1 Year). Recommended substitutes LS T676-Q1R2-1-Z and LS T676-P2S1-1-Z maintain MSL 2 (1 Year). The VFHR1104LS-TR carries MSL 2A (4 Weeks), requiring more frequent baking cycles. The AA3528SRS carries MSL 3 (168 Hours), requiring the most frequent baking. MSL differences affect component storage and handling procedures but do not impact circuit performance.

Q: Can I use LS T676-P2S1-1-Z if my design requires exactly 125.5mcd?

A: The LS T676-P2S1-1-Z delivers 140mcd, exceeding the original 125.5mcd specification. If the design requires exactly 125.5mcd for brightness matching or power budget constraints, use LS T676-Q1R2-1-Z instead. If increased brightness is acceptable or beneficial, LS T676-P2S1-1-Z is suitable.

Q: What are the wavelength tolerance implications for color matching?

A: The original LS T676-Q1R2-1 specifies 633nm dominant wavelength and 645nm peak wavelength. Substitutes maintain these specifications (LS T676-Q1R2-1-Z, LS T676-P2S1-1-Z) or operate within acceptable tolerance (VFHR1104LS-TR at 632nm dominant, 640nm peak; AA3528SRS at 640nm dominant, 660nm peak). For applications requiring precise color matching across multiple components, verify wavelength specifications with the specific production lot.