SM1206UBWC LED Blue Clear 1206 SMD - Equivalent & Substitute Parts

Part Overview

The SM1206UBWC is an active blue LED indication component manufactured by Bivar Inc., configured as a 1206 (3216 Metric) surface mount discrete device. This component operates at 3.3V forward voltage with a 470nm dominant wavelength and 115mcd brightness rating. Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design flexibility permits equivalent performance from alternative manufacturers while maintaining electrical and mechanical compatibility within the 1206 package specification.

Substiute Parts

SM1206UBWC

Bivar Inc.In Stock: 761SM1206UBWC Datasheet

Current PartRFQ

5988291102F

DialightIn Stock: 21935988291102F Datasheet

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5988291107F

DialightIn Stock: 119905988291107F Datasheet

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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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CTL1206FBL1T

VenkelIn Stock: 33626CTL1206FBL1T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by compliance with the following parameters:

• Package Compatibility: All candidates must conform to 1206 (3216 Metric) surface mount package specifications with matching footprint dimensions (3.20mm L x 1.60mm W)
• Electrical Parameters: Forward voltage must be within the acceptable range (2.8V to 3.5V) to ensure compatibility with 3.3V supply circuits; test current remains at 20mA
• Color and Wavelength: Blue LED indication requirement with wavelength between 460nm and 475nm
• Optical Performance: Millicandela rating between 25mcd and 140mcd for indication purposes
• Viewing Angle: Range of 120° to 140°
• Regulatory Compliance: ROHS3 compliance required; REACH status unaffected acceptable

Six substitute parts have been identified across five manufacturers: Dialight (two variants with different packaging), Kingbright, Lite-On Inc., Lumex Opto/Components Inc., and Venkel.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory conformance equivalent to the original SM1206UBWC. The Dialight 5988291107F provides the closest parametric alignment with enhanced brightness (140mcd), matching the 470nm wavelength region and 140° viewing angle while offering lower profile (0.70mm) in standard Tape & Reel packaging. The Lite-On LTST-C150TBKT delivers direct dimensional and electrical compatibility (1.10mm height, 3.3V, 470nm, 104mcd) with higher inventory availability. The Venkel CTL1206FBL1T operates at lower forward voltage (2.8V), providing design margin in power-constrained applications with excellent brightness (125mcd) and standard viewing angle (140°). The Kingbright APT3216QBC/D operates at matched 3.3V with reduced viewing angle (120°) and slightly lower brightness (100mcd). The Lumex component operates at elevated voltage (3.5V) with significantly reduced brightness (25mcd), suitable only for applications not requiring high luminosity. Selection depends on specific design constraints including board height restrictions, supply voltage characteristics, and brightness requirements.

Frequently Asked Questions (FAQ)

Q: What makes a part eligible as a substitute for the SM1206UBWC? A: Substitutes must conform to the 1206 (3216 Metric) surface mount package with matching footprint (3.20mm L x 1.60mm W), forward voltage between 2.8V and 3.5V, blue wavelength between 460nm and 475nm, viewing angle of 120° or greater, millicandela rating between 25mcd and 140mcd, and ROHS3 compliance.

Q: Can I use the Lumex SML-LX1206USBC-TR as a direct replacement? A: The Lumex part maintains 1206 package compatibility and 3.5V forward voltage operation. However, its 25mcd brightness is substantially lower than the 115mcd original specification, making it unsuitable for applications requiring standard LED indication brightness. Use is restricted to specialized low-brightness indication applications.

Q: Which substitute offers the best supply availability? A: The Lite-On Inc. LTST-C150TBKT demonstrates the highest reported inventory (164,274 pieces) with direct electrical and mechanical compatibility to the original part, matching 3.3V forward voltage, 470nm wavelength, and 1.10mm height.

Q: Do all substitutes have identical height specifications? A: No. The Dialight variants (5988291102F and 5988291107F) provide the lowest profile at 0.70mm, compared to 1.10mm for the original SM1206UBWC and LTST-C150TBKT, and 1.20mm for the Venkel CTL1206FBL1T. Height differences may impact board layout and design clearance calculations.

Q: What is the difference between the two Dialight parts? A: The 5988291102F is supplied in Strip packaging, while 5988291107F is supplied in Tape & Reel (TR). Both share identical electrical and optical specifications (3.2V, 473nm, 140mcd) and are otherwise equivalent.

Q: Is forward voltage variation between substitutes an issue? A: Forward voltage variation from 2.8V to 3.5V across available substitutes permits selection based on power supply design. The 3.3V-rated parts (Bivar original, Kingbright, Lite-On) match standard supply voltages directly. The Venkel 2.8V variant provides lower voltage operation with design margin, while the Lumex 3.5V part operates at elevated voltage requiring careful supply consideration.

Q: Why does the Kingbright APT3216QBC/D have a 120° viewing angle while others are 140°? A: Viewing angle is determined by lens design and phosphor configuration. The Kingbright part maintains functional indication capability within 120° with comparable brightness (100mcd), satisfying indication requirements in applications where narrower viewing angles are acceptable.