LS T67F-T1V1-1-Z Equivalent & Substitute Parts

Part Overview

The LS T67F-T1V1-1-Z is a red LED indication component manufactured by ams-OSRAM USA INC., configured as a 2-PLCC surface mount discrete device. This part operates at a forward voltage of 2.05V with a dominant wavelength of 633nm and delivers 590 millicandela at 20mA test current. The component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and production continuity. Substitute parts must maintain functional compatibility across optical, electrical, and mechanical parameters while meeting current availability and compliance standards.

Substiute Parts

LS T67F-T1V1-1-Z

ams-OSRAM USA INC.In Stock: 996LS T67F-T1V1-1-Z Datasheet

Current PartRFQ

LS T67D-T2V1-1-1-20-R18-Z

ams-OSRAM USA INC.In Stock: 14790LS T67D-T2V1-1-1-20-R18-Z Datasheet

Parametric EquivalentRFQ

AA3528SES/J3-AMT

KingbrightIn Stock: 1182AA3528SES/J3-AMT Datasheet

Parametric EquivalentRFQ

QBLP670-R-2897

QT Brightek (QTB)In Stock: 4240QBLP670-R-2897 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LS T67F-T1V1-1-Z are selected based on strict parametric equivalence across the following critical criteria:

Optical Parameters: Dominant wavelength range (620nm–635nm), lens size (2.40mm diameter), lens style (round with flat top), lens transparency (clear), and viewing angle (120°).

Electrical Parameters: Forward voltage tolerance (2.0V–2.2V typical), test current (20mA), and millicandela rating (590mcd minimum).

Mechanical Parameters: Package type (2-PLCC), surface mount configuration, physical dimensions (3.20mm L x 2.80mm W), and maximum height (2.10mm).

Compliance Parameters: RoHS3 compliance, REACH unaffected status, and moisture sensitivity level compatibility.

Substitute parts are grouped into three categories: direct ams-OSRAM equivalents with minor forward voltage variation, active Kingbright alternatives with comparable optical output, and QT Brightek options with extended availability.

Parameter Comparison

Engineering Selection Recommendations

LS T67D-T2V1-1-1-20-R18-Z (ams-OSRAM): This part provides the closest parametric match to the LS T67F-T1V1-1-Z, maintaining identical wavelength specifications (633nm dominant, 645nm peak), millicandela rating (590mcd), and mechanical dimensions. Forward voltage increases from 2.05V to 2.2V, representing a 7.3% variation within acceptable tolerance for indication applications. Both parts share obsolete product status and identical RoHS3 compliance. This substitute is suitable for direct replacement in existing designs with minimal circuit modification. Tape & Reel packaging provides production-scale availability (14,731 units in stock).

AA3528SES/J3-AMT (Kingbright): This active product offers superior optical output (650mcd versus 590mcd) with a dominant wavelength of 635nm, representing a 2nm shift from the original specification. Forward voltage matches the LS T67D variant at 2.2V. Mechanical compatibility is complete across all dimensions and package type. Active product status ensures long-term availability and supply chain stability. Moisture sensitivity level increases to MSL 3 (168 hours), requiring adjusted handling protocols during storage and assembly. This substitute is appropriate for new designs or production transitions requiring extended component lifecycle.

QBLP670-R-2897 (QT Brightek): This part delivers the highest optical output (690mcd) with a dominant wavelength of 620nm, representing a 13nm shift toward the shorter wavelength end of the red spectrum. Forward voltage is lowest at 2.0V, providing the most efficient electrical operation. Active product status and Tape & Reel packaging support high-volume production. Moisture sensitivity level is MSL 3 (168 hours). This substitute is suitable for applications where increased brightness is beneficial and the 620nm wavelength is acceptable for visual indication purposes. The lower forward voltage reduces power dissipation in current-limiting circuits.

All three substitute parts maintain full mechanical and package compatibility with the original LS T67F-T1V1-1-Z, supporting direct PCB footprint reuse without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the LS T67D-T2V1-1-1-20-R18-Z directly replace the LS T67F-T1V1-1-Z without circuit modification?

A: The LS T67D-T2V1-1-1-20-R18-Z is a direct parametric equivalent with identical wavelength, millicandela rating, and mechanical specifications. The forward voltage increase from 2.05V to 2.2V (7.3% variation) is within standard tolerance for LED indication circuits. Direct replacement is supported without circuit redesign for most applications. Current-limiting resistor values may require minor adjustment if precise brightness matching is required.

Q: What is the wavelength difference between the original part and the Kingbright substitute?

A: The AA3528SES/J3-AMT has a dominant wavelength of 635nm compared to the original 633nm, representing a 2nm difference. This variation is imperceptible to human vision in red indication applications and falls within the standard red LED spectrum range. Peak wavelength shifts from 645nm to 640nm, a 5nm difference. Both wavelengths are suitable for identical application purposes.

Q: Why does the QT Brightek part have a lower forward voltage?

A: The QBLP670-R-2897 operates at 2.0V typical forward voltage, 50mV lower than the original 2.05V specification. This difference reflects variations in semiconductor material composition and junction design between manufacturers. Lower forward voltage results in reduced power dissipation and heat generation in current-limiting circuits, which can be advantageous in thermally constrained applications.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All substitute parts maintain identical 2-PLCC package configuration with matching dimensions (3.20mm L x 2.80mm W, 2.10mm maximum height). PCB footprints, solder pad layouts, and component placement are fully compatible without modification.

Q: What is the impact of moisture sensitivity level differences?

A: The original LS T67F-T1V1-1-Z and LS T67D-T2V1-1-1-20-R18-Z are rated MSL 2 (1 year floor life), while the Kingbright and QT Brightek substitutes are rated MSL 3 (168 hours floor life). MSL 3 components require more stringent moisture control during storage and assembly. Dry-pack storage with desiccant is required, and components must be used within 168 hours of package opening. Standard SMT assembly processes accommodate MSL 3 components without additional equipment.

Q: Which substitute part is recommended for new product designs?

A: The AA3528SES/J3-AMT (Kingbright) is recommended for new designs due to active product status, ensuring long-term availability and supply chain stability. The QBLP670-R-2897 (QT Brightek) is an alternative for high-volume production requiring maximum brightness and lowest power consumption. Both parts provide superior availability compared to the obsolete LS T67F-T1V1-1-Z.

Q: Can these parts be used interchangeably in existing production?

A: The LS T67D-T2V1-1-1-20-R18-Z provides the closest match for direct substitution in existing production due to identical optical and electrical specifications. The Kingbright and QT Brightek parts require evaluation of brightness and wavelength acceptance criteria for specific applications before production implementation.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts are ROHS3 compliant and REACH unaffected, matching the original LS T67F-T1V1-1-Z compliance status. These certifications support use in regulated markets and applications requiring environmental compliance documentation.