LW1141W-TR White Diffused LED 3216 SMD Equivalent & Substitute Parts

Part Overview

The LW1141W-TR is a white diffused LED manufactured by Stanley Electric Co in the 1206 (3216 Metric) surface mount package. This component is classified as obsolete, indicating discontinued production and limited availability. The part functions as a white LED indication element with a forward voltage of 3V and a brightness rating of 80 millicandela at 10mA test current. Due to its obsolete status, identifying equivalent and substitute parts is necessary for ongoing design support, production continuity, and component sourcing in applications requiring white diffused LED indicators.

Substiute Parts

LW1141W-TR

Stanley Electric CoIn Stock: 804LW1141W-TR Datasheet

Current PartRFQ

VCEW1151CDS-3BZH3-TR

Stanley Electric CoIn Stock: 116224VCEW1151CDS-3BZH3-TR Datasheet

SimilarRFQ

SML-LX1206UWW-TR

Lumex Opto/Components Inc.In Stock: 10441SML-LX1206UWW-TR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LW1141W-TR are identified based on the following critical parameters that determine functional and mechanical compatibility:

Primary Substitution Criteria:

• Color: White
• Lens Transparency: Diffused
• Mounting Type: Surface Mount
• Lens Style: Rectangle with Flat Top
• Configuration: Standard

Secondary Compatibility Parameters:

• Package / Case format (1206/3216 Metric preferred for direct replacement)
• Voltage - Forward (Vf) within acceptable circuit design tolerance
• Millicandela Rating (brightness level for indication function)
• Physical dimensions and height constraints
• Surface mount compatibility

The substitute parts listed below meet the primary criteria and maintain functional equivalence as white diffused LED indicators in surface mount configuration. Package variations and electrical parameter differences are documented to enable informed selection based on specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

SML-LX1206UWW-TR (Lumex Opto/Components Inc.)

This substitute maintains the 1206 (3216 Metric) package format, providing direct mechanical compatibility with the LW1141W-TR footprint. The part is in active production status with ROHS3 compliance and improved moisture sensitivity rating (MSL 2 vs. MSL 3). Forward voltage is 3.5V compared to 3V, requiring circuit verification for voltage-dependent applications. Brightness output is 90mcd at 20mA test current, slightly higher than the original 80mcd at 10mA. Physical dimensions are comparable with minimal height reduction (1.10mm vs. 1.90mm), suitable for space-constrained designs. This option is recommended for applications prioritizing package compatibility and long-term availability.

VCEW1151CDS-3BZH3-TR (Stanley Electric Co)

This substitute is manufactured by the same original equipment manufacturer, ensuring design consistency and quality standards. The part is in active production with ROHS3 compliance and superior moisture sensitivity (MSL 2A). However, the package format is 0603 (1608 Metric), requiring PCB layout modification and is not a direct mechanical replacement. Forward voltage is 3.1V, closer to the original 3V specification. Brightness is 120mcd at 20mA, providing higher light output. Significantly reduced physical dimensions (1.60mm L x 0.80mm W, 0.80mm height) enable compact designs. This option is suitable for new designs or redesigns where space optimization is prioritized and package change is acceptable.

Product Status Consideration

Both substitute parts are in active production status, ensuring long-term component availability and supply chain stability compared to the obsolete LW1141W-TR. Selection between substitutes depends on whether existing PCB layouts require package compatibility (SML-LX1206UWW-TR) or whether design flexibility permits package optimization (VCEW1151CDS-3BZH3-TR).

Frequently Asked Questions (FAQ)

Q: Can SML-LX1206UWW-TR be used as a direct replacement for LW1141W-TR without PCB modification?

A: Yes. Both parts use the 1206 (3216 Metric) surface mount package with identical footprint dimensions (3.00mm L x 1.50mm W for LW1141W-TR; 3.20mm L x 1.60mm W for SML-LX1206UWW-TR). Physical dimensions are compatible with existing PCB layouts. Circuit design verification is required due to forward voltage difference (3V vs. 3.5V).

Q: Can VCEW1151CDS-3BZH3-TR be used as a direct replacement for LW1141W-TR without PCB modification?

A: No. VCEW1151CDS-3BZH3-TR uses the 0603 (1608 Metric) package, which has different footprint dimensions (1.60mm L x 0.80mm W) compared to the 1206 package. PCB layout redesign is required for this substitution.

Q: What are the key electrical differences between the main part and substitutes?

A: Forward voltage varies: LW1141W-TR operates at 3V, SML-LX1206UWW-TR at 3.5V, and VCEW1151CDS-3BZH3-TR at 3.1V. Test current differs: LW1141W-TR uses 10mA, while both substitutes use 20mA. Brightness ratings are 80mcd (main), 90mcd (SML-LX1206UWW-TR), and 120mcd (VCEW1151CDS-3BZH3-TR). These differences require circuit analysis to confirm compatibility with existing current-limiting resistor values and brightness requirements.

Q: Which substitute offers better long-term availability?

A: Both SML-LX1206UWW-TR and VCEW1151CDS-3BZH3-TR are in active production status. SML-LX1206UWW-TR has higher inventory (10,348 pcs) compared to VCEW1151CDS-3BZH3-TR (116,156 pcs). Both are preferable to the obsolete LW1141W-TR for new designs and ongoing production.

Q: Are there compliance or environmental differences between the parts?

A: Both substitutes are ROHS3 compliant and REACH unaffected, compared to the main part with unspecified RoHS status. Moisture sensitivity levels differ: LW1141W-TR is MSL 3 (168 hours), SML-LX1206UWW-TR is MSL 2 (1 year), and VCEW1151CDS-3BZH3-TR is MSL 2A (4 weeks). Lower MSL ratings indicate better moisture tolerance and longer shelf life.

Q: What viewing angle differences exist between the parts?

A: LW1141W-TR specifies 160° and 170° viewing angles. SML-LX1206UWW-TR specifies 140° viewing angle. VCEW1151CDS-3BZH3-TR does not specify viewing angle. For applications requiring wide-angle visibility, LW1141W-TR and SML-LX1206UWW-TR are preferred.

Q: Can I use either substitute in a circuit designed for the LW1141W-TR without modification?

A: SML-LX1206UWW-TR requires circuit verification due to higher forward voltage (3.5V vs. 3V) and different test current (20mA vs. 10mA). VCEW1151CDS-3BZH3-TR requires both circuit verification and PCB redesign due to package change. Direct substitution without analysis is not recommended for either part.