QTLP650CBTR Blue LED 1206 SMD Equivalent & Substitute Parts

Part Overview

The QTLP650CBTR is an active blue LED indication component manufactured by Everlight Electronics Co Ltd, designed for surface mount applications in the 1206 (3216 Metric) package format. This discrete LED operates at 3.8V forward voltage with a 20mA test current and delivers 20 millicandela brightness at 465nm dominant wavelength. The component is ROHS3 compliant and maintains active product status with 844 pieces currently in stock.

Substitute parts are identified to address inventory availability, lead time constraints, or specific application requirements where electrical and mechanical parameters remain within acceptable tolerance ranges for the intended circuit design.

Substiute Parts

QTLP650CBTR

Everlight Electronics Co LtdIn Stock: 929QTLP650CBTR Datasheet

Current PartRFQ

APT3216QBC/D

KingbrightIn Stock: 3973APT3216QBC/D Datasheet

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LTST-C150TBKT

Lite-On Inc.In Stock: 164345LTST-C150TBKT Datasheet

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SML-LX1206USBC-TR

Lumex Opto/Components Inc.In Stock: 43809SML-LX1206USBC-TR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the QTLP650CBTR are qualified based on strict alignment with the following critical parameters:

Critical Parameters (Must Match):

• Package / Case: 1206 (3216 Metric)
• Mounting Type: Surface Mount
• Color: Blue
• Lens Transparency: Clear
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 3 (168 Hours)

Major Parameters (Acceptable Variance):

• Voltage - Forward (Vf): 3.3V to 3.8V range acceptable for most indication circuits
• Current - Test: 20mA standard specification
• Wavelength - Dominant: 465nm to 470nm range maintains blue color perception
• Viewing Angle: 120° to 140° range acceptable for indication applications

Minor Parameters (Flexible):

• Millicandela Rating: 20mcd to 104mcd range acceptable depending on circuit design
• Lens Size: Minor dimensional variations within 1206 package constraints

All three substitute parts meet the critical parameter requirements and fall within acceptable variance for major parameters.

Parameter Comparison

Engineering Selection Recommendations

APT3216QBC/D (Kingbright)

This substitute is suitable for applications where higher brightness output is acceptable. The 3.3V forward voltage is 0.5V lower than the main part, requiring circuit design verification to ensure proper current limiting and brightness control. The reduced height (0.75mm vs 1.30mm) provides improved PCB clearance. All regulatory compliance and moisture sensitivity specifications match the main part. Active product status and substantial inventory (3865 pieces) support supply chain continuity.

LTST-C150TBKT (Lite-On Inc.)

This substitute offers the highest inventory availability (164274 pieces) and is optimized for high-volume production environments. The 3.3V forward voltage and 470nm dominant wavelength maintain blue color specification within acceptable tolerance. The 104mcd brightness rating represents a significant increase over the main part, suitable for applications requiring enhanced visibility. Reduced height (1.10mm) and full regulatory compliance make this option suitable for space-constrained designs. Cut Tape and Digi-Reel packaging options provide flexibility in procurement quantities.

SML-LX1206USBC-TR (Lumex Opto/Components Inc.)

This substitute provides the closest brightness match (25mcd vs 20mcd) and maintains the 140° viewing angle specification of the main part. The 3.5V forward voltage represents a 0.3V reduction, requiring minimal circuit design adjustment. Peak wavelength of 470nm aligns with blue color specification. Height of 1.10mm offers improved PCB clearance compared to the main part. Tape & Reel packaging and substantial inventory (43777 pieces) support automated assembly processes. Full regulatory compliance and REACH unaffected status confirm environmental qualification.

Frequently Asked Questions (FAQ)

Q: Can APT3216QBC/D be used as a direct replacement for QTLP650CBTR?

A: APT3216QBC/D meets all critical package, mounting, color, and compliance specifications. The 3.3V forward voltage is 0.5V lower than the main part. Direct substitution requires circuit design verification to confirm the current limiting resistor value produces acceptable brightness levels at the lower voltage. The reduced height (0.75mm) may affect PCB layout if vertical clearance is constrained.

Q: What is the primary difference between LTST-C150TBKT and the main part?

A: LTST-C150TBKT maintains identical package and mounting specifications but operates at 3.3V forward voltage (0.5V lower) and delivers 104mcd brightness compared to 20mcd. The dominant wavelength shifts from 465nm to 470nm, remaining within blue color specification. This substitute is suitable for applications requiring higher brightness or where lower forward voltage reduces power consumption. Circuit design verification is required to confirm brightness acceptability.

Q: Is SML-LX1206USBC-TR compatible with the same circuit design as QTLP650CBTR?

A: SML-LX1206USBC-TR is highly compatible. The 3.5V forward voltage is only 0.3V lower than the main part, typically requiring minimal or no circuit design adjustment. Brightness (25mcd) and viewing angle (140°) closely match the main part specifications. The 470nm peak wavelength maintains blue color perception. This substitute is suitable for direct replacement in most indication circuit applications.

Q: How do the viewing angles affect substitution decisions?

A: The main part QTLP650CBTR specifies 140° viewing angle. APT3216QBC/D provides 120° viewing angle, representing a 20° reduction in light distribution width. LTST-C150TBKT and SML-LX1206USBC-TR maintain 130° and 140° viewing angles respectively. For applications requiring wide-angle visibility, SML-LX1206USBC-TR or the main part are preferred. For focused indication applications, the narrower 120° angle of APT3216QBC/D is acceptable.

Q: What packaging options are available for each substitute?

A: QTLP650CBTR is supplied in standard packaging format. APT3216QBC/D is available in Tape & Reel (TR) format, suitable for automated pick-and-place assembly. LTST-C150TBKT offers both Cut Tape (CT) and Digi-Reel packaging options, providing flexibility for varying production volumes. SML-LX1206USBC-TR is supplied in Tape & Reel format. Packaging selection should align with assembly process requirements and procurement volume.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All three substitute parts (APT3216QBC/D, LTST-C150TBKT, and SML-LX1206USBC-TR) are ROHS3 compliant with Moisture Sensitivity Level 3 (168 Hours), matching the main part QTLP650CBTR. All parts meet current environmental and regulatory requirements for electronic component manufacturing and assembly.

Q: Which substitute offers the best inventory availability?

A: LTST-C150TBKT provides the highest inventory availability with 164274 pieces in stock, followed by SML-LX1206USBC-TR with 43777 pieces and APT3216QBC/D with 3865 pieces. The main part QTLP650CBTR has 844 pieces available. Inventory levels support supply chain planning and lead time management for production schedules.