VEW1147LS-TR Equivalent & Substitute Parts

Part Overview

The VEW1147LS-TR is a white diffused LED indicator manufactured by Stanley Electric Co, configured as a 2-PLCC surface mount component with a 3.3V forward voltage rating and 1500mcd luminous intensity. This part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The component is designed for white LED indication applications requiring discrete 3.3V operation in compact surface mount packages.

Substiute Parts

VEW1147LS-TR

Stanley Electric CoIn Stock: 20376VEW1147LS-TR Datasheet

Current PartRFQ

VSEW1154LDS-E-3D4N4-TR

Stanley Electric CoIn Stock: 719VSEW1154LDS-E-3D4N4-TR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the VEW1147LS-TR is determined by strict alignment of the following critical parameters:

Package Compatibility: The substitute part must utilize the 2-PLCC surface mount package with identical mechanical dimensions (3.20mm L x 2.80mm W, 2.10mm max height) to ensure PCB footprint compatibility without design modification.

Optical Characteristics: The substitute must maintain white color emission with diffused lens transparency and round flat-top lens style at 2.40mm diameter. Viewing angle must remain at 120° to preserve application-specific visibility requirements.

Electrical Parameters: Forward voltage (Vf) tolerance and test current (30mA) establish the operational envelope. Luminous intensity (millicandela rating) may vary within acceptable ranges for the application category, provided the substitute meets or exceeds the original specification.

Environmental Compliance: Moisture sensitivity level (MSL 3, 168 Hours) and regulatory compliance (REACH Unaffected, EAR99 ECCN classification) must be maintained or improved.

The VSEW1154LDS-E-3D4N4-TR meets these substitution criteria through identical package geometry, optical configuration, and environmental specifications, with enhanced luminous intensity (2300mcd) and active product status.

Parameter Comparison

Engineering Selection Recommendations

The VSEW1154LDS-E-3D4N4-TR is a direct substitute for the obsolete VEW1147LS-TR based on the following engineering criteria:

Package and Mechanical Compatibility: Both components share identical 2-PLCC package geometry and surface mount footprint dimensions, eliminating PCB redesign requirements.

Optical and Electrical Alignment: The substitute maintains the same white diffused lens configuration, 120° viewing angle, and 30mA test current. The forward voltage increases from 3.3V to 3.4V (0.1V differential) and luminous intensity increases from 1500mcd to 2300mcd, both representing performance enhancements within the white LED indicator category.

Product Status and Compliance: The substitute is classified as active product status, ensuring long-term availability and supply chain continuity. Both components maintain identical REACH and ECCN compliance classifications, with the substitute additionally certified as ROHS3 Compliant, providing enhanced environmental compliance.

Regulatory and Environmental Specifications: Moisture sensitivity level (MSL 3, 168 Hours) and all regulatory classifications remain consistent between the main part and substitute, supporting seamless integration into existing supply chain and quality management systems.

Frequently Asked Questions (FAQ)

Q: Can the VSEW1154LDS-E-3D4N4-TR be used as a direct replacement without PCB modification?

A: Yes. Both components utilize the 2-PLCC package with identical mechanical dimensions (3.20mm L x 2.80mm W, 2.10mm height), ensuring footprint compatibility without PCB redesign.

Q: What is the significance of the forward voltage difference (3.3V vs 3.4V)?

A: The 0.1V increase from 3.3V to 3.4V represents a minor voltage shift within typical LED operating tolerances. Circuit designs accommodating 3.3V operation will function with the 3.4V substitute; however, current-limiting resistor values may require recalculation for precise brightness control in applications with tight voltage regulation.

Q: Why does the substitute have higher luminous intensity (2300mcd vs 1500mcd)?

A: The VSEW1154LDS-E-3D4N4-TR represents an enhanced version of the white LED indicator line, offering improved brightness performance. This enhancement is compatible with applications requiring the original 1500mcd specification, as the substitute exceeds the minimum requirement.

Q: Are there any compliance or certification differences between the two parts?

A: The substitute includes ROHS3 Compliance certification in addition to the shared REACH Unaffected and EAR99 ECCN classifications. Both components maintain identical moisture sensitivity levels (MSL 3, 168 Hours) and HTSUS classifications.

Q: What is the inventory status difference, and how does it affect procurement?

A: The VEW1147LS-TR (obsolete) has 20,300 units in stock, while the VSEW1154LDS-E-3D4N4-TR (active) has 686 units available. The active status of the substitute ensures continued availability for future procurement cycles, whereas the obsolete part represents limited remaining inventory.

Q: Are the optical characteristics identical between the two parts?

A: Yes. Both components feature white color emission, yellow lens color, diffused lens transparency, round flat-top lens style, 2.40mm lens diameter, and 120° viewing angle. These specifications are fully compatible for white LED indication applications.