LA T67F-U2AB-24-1-20-R18-Z Equivalent & Substitute Parts

Part Overview

The LA T67F-U2AB-24-1-20-R18-Z is an amber LED indication component manufactured by ams-OSRAM USA INC. in the TOPLED® series. This discrete 2-PLCC surface mount LED operates at 2.15V forward voltage with a dominant wavelength of 617nm and delivers 1180mcd at 20mA test current. The component is designated as Last Time Buy, indicating discontinued production status. Identification of equivalent and substitute parts is necessary to ensure design continuity and procurement availability for applications currently utilizing this amber LED indicator.

Substiute Parts

LA T67F-U2AB-24-1-20-R18-Z

ams-OSRAM USA INC.In Stock: 1064LA T67F-U2AB-24-1-20-R18-Z Datasheet

Current PartRFQ

KS DELPS1.22-TIVH-68-H3Q4-20-S

ams-OSRAM USA INC.In Stock: 39746KS DELPS1.22-TIVH-68-H3Q4-20-S Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LA T67F-U2AB-24-1-20-R18-Z is constrained by the following critical parameters:

Electrical Compatibility Parameters:

• Forward voltage (Vf) tolerance: 2.15V nominal operation
• Test current: 20mA standard
• Viewing angle: 120° minimum
• Mounting type: Surface mount requirement

Mechanical Compatibility Parameters:

• Package type: 2-lead surface mount configuration
• Lens transparency: Clear
• Lens style: Flat top configuration
• Physical footprint: Dimensions and height constraints for PCB layout

Regulatory & Compliance Parameters:

• RoHS3 compliance mandatory
• MSL rating: 2 (1 Year) or equivalent
• REACH unaffected status

The substitute part KS DELPS1.22-TIVH-68-H3Q4-20-S shares the same manufacturer, series designation (TOPLED®), mounting type, electrical test parameters, and regulatory compliance status. However, this substitute differs in color (red vs. amber), wavelength specification, package form factor (2-SMD flat lead vs. 2-PLCC), and physical dimensions. Substitution is applicable only when color change from amber to red is functionally acceptable within the application circuit.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration: Product Status

The LA T67F-U2AB-24-1-20-R18-Z carries Last Time Buy status, indicating end-of-life production. The KS DELPS1.22-TIVH-68-H3Q4-20-S maintains Active product status with significantly higher inventory availability (39,702 units vs. 978 units), ensuring long-term procurement viability.

Regulatory Compliance

Both components satisfy ROHS3 compliance and REACH unaffected requirements, meeting current environmental and hazardous substance directives. MSL ratings are identical at Level 2 (1 Year), ensuring equivalent moisture handling and storage protocols.

Electrical Compatibility

Forward voltage differential is 0.05V (2.15V vs. 2.2V), within typical circuit tolerance for LED indication applications. Test current remains constant at 20mA. Viewing angle specification is identical at 120°. The substitute exhibits lower luminous intensity (680mcd vs. 1180mcd), requiring circuit evaluation for brightness adequacy in the target application.

Mechanical and Optical Constraints

Package form factor change from 2-PLCC to 2-SMD flat lead necessitates PCB layout modification. Physical dimensions differ substantially: main part measures 3.20mm L x 2.80mm W x 2.10mm H; substitute measures 1.40mm L x 0.80mm W x 0.70mm H. Lens geometry transitions from round to oval configuration. These mechanical differences require design review for footprint compatibility and optical performance validation.

Color Specification

The substitute part is red (628nm dominant wavelength) versus amber (617nm dominant wavelength). Color substitution is permissible only when application requirements allow red indication in place of amber signaling.

Frequently Asked Questions (FAQ)

Q: Can the KS DELPS1.22-TIVH-68-H3Q4-20-S directly replace the LA T67F-U2AB-24-1-20-R18-Z without PCB modification?

A: No. The substitute part uses a different package type (2-SMD flat lead vs. 2-PLCC) and has significantly different physical dimensions (1.40mm x 0.80mm x 0.70mm vs. 3.20mm x 2.80mm x 2.10mm). PCB footprint redesign is required.

Q: What is the forward voltage difference between these parts, and does it affect circuit design?

A: The forward voltage difference is 0.05V (2.15V main vs. 2.2V substitute). This differential is within standard LED circuit tolerance and does not require current-limiting resistor recalculation for typical indication applications.

Q: Is the brightness reduction from 1180mcd to 680mcd significant?

A: The substitute part delivers 57.6% of the original luminous intensity. Application-specific evaluation is required to determine if reduced brightness remains adequate for the intended indication function.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both components are ROHS3 compliant and REACH unaffected, meeting current environmental and hazardous substance requirements.

Q: What is the impact of the color change from amber to red?

A: Color change alters the visual indication spectrum. Substitution is valid only when the application circuit and user interface design accommodate red indication in place of amber signaling.

Q: How do the moisture sensitivity levels compare?

A: Both parts carry identical MSL ratings of Level 2 (1 Year), requiring equivalent moisture control and storage protocols during handling and assembly.

Q: What is the inventory status difference between these parts?

A: The main part (Last Time Buy) has 978 units available. The substitute (Active status) has 39,702 units in stock, providing significantly greater long-term procurement availability.

Q: Do both parts use the same mounting technology?

A: Yes. Both are surface mount components. However, the package types differ (2-PLCC vs. 2-SMD flat lead), requiring different solder pad geometries and reflow profiles.