SM1206BWC Blue LED 1206 SMD Equivalent & Substitute Parts

Part Overview

The SM1206BWC is an active blue LED indication component manufactured by Bivar Inc. in 1206 (3216 Metric) surface mount package format. This discrete LED operates at 3.9V forward voltage with a dominant wavelength of 466nm and provides 9mcd luminous intensity at 20mA test current. The component is RoHS3 compliant and available in Tape & Reel packaging with 690 pieces in current inventory stock.

Substitute parts are identified when equivalent functional performance can be achieved within the allowed electrical and mechanical parameters of the 1206 SMD LED category, including forward voltage tolerance, wavelength range, viewing angle specifications, and physical dimensions.

Substiute Parts

SM1206BWC

Bivar Inc.In Stock: 757SM1206BWC 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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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SM1206BWC are qualified based on the following allowed parameters:

Electrical Compatibility Criteria:

• Color: Blue
• Lens Transparency: Clear
• Package / Case: 1206 (3216 Metric)
• Mounting Type: Surface Mount
• Current - Test: 20mA
• Wavelength range: Blue spectrum (428nm to 473nm dominant wavelength acceptable)
• Forward Voltage (Vf): Range 3.2V to 3.9V
• Viewing Angle: 120° to 140°

Mechanical Compatibility Criteria:

• Supplier Device Package: 1206
• Size / Dimension: 3.20mm L x 1.60mm W (±0.06mm tolerance standard)
• Height (Max): 0.70mm to 1.10mm
• Lens Size: 2.00mm x 1.50mm to 2.06mm x 1.60mm

Compliance Criteria:

• RoHS3 Compliant
• Product Status: Active

The following substitute parts meet these criteria and are therefore electrically and mechanically compatible with the SM1206BWC for direct replacement in 1206 SMD LED indication applications.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts are active products with RoHS3 compliance status, meeting regulatory requirements equivalent to the SM1206BWC.

Packaging Consideration: The SM1206BWC is supplied in Tape & Reel (TR) format. Direct packaging equivalents in TR format are 5988291107F (Dialight), APT3216QBC/D (Kingbright), and SML-LX1206USBC-TR (Lumex). The 5988291102F (Dialight) is supplied in Strip format and LTST-C150TBKT (Lite-On) is supplied in Cut Tape & Digi-Reel format; these require packaging format conversion for equivalent reel-based assembly processes.

Moisture Sensitivity Level (MSL): The SM1206BWC has MSL 4 (72 Hours), while all substitute parts have MSL 3 (168 Hours). MSL 3 components provide extended moisture protection windows during storage and handling.

Height Profile: The SM1206BWC has maximum height of 1.10mm. The Dialight parts (5988291102F and 5988291107F) have reduced height of 0.70mm, and the Kingbright APT3216QBC/D has 0.75mm height. These lower-profile alternatives are suitable for space-constrained PCB designs. The Lite-On LTST-C150TBKT and Lumex SML-LX1206USBC-TR maintain the 1.10mm height profile.

Luminous Intensity: The SM1206BWC provides 9mcd at 20mA test current. Substitute parts provide higher luminous intensity: Dialight parts deliver 140mcd, Kingbright delivers 100mcd, Lite-On delivers 104mcd, and Lumex delivers 25mcd. Higher intensity alternatives are suitable for applications requiring increased visibility; lower intensity alternatives are not recommended for direct replacement without circuit redesign.

Forward Voltage: The SM1206BWC operates at 3.9V typical. Substitute parts operate at 3.2V to 3.5V, representing a 0.4V to 0.7V reduction. Circuit designs must accommodate this voltage differential in current-limiting resistor calculations to maintain 20mA test current specification.

Wavelength: The SM1206BWC has dominant wavelength of 466nm (peak 428nm). Substitute parts range from 465nm to 473nm dominant wavelength, representing acceptable blue spectrum variation within standard LED color classification.

Viewing Angle: The SM1206BWC provides 140° viewing angle. Substitute parts provide 120° to 140° viewing angle. The Kingbright APT3216QBC/D at 120° has narrower viewing angle and is suitable only for applications where directional light output is acceptable.

Frequently Asked Questions (FAQ)

Q: Can 5988291102F (Dialight Strip packaging) be used as a direct substitute for SM1206BWC (Tape & Reel)?

A: The 5988291102F is electrically and mechanically compatible with the SM1206BWC. However, it is supplied in Strip format rather than Tape & Reel format. Strip packaging requires manual component handling and is not compatible with automated reel-based pick-and-place assembly equipment. Use of this part requires either manual assembly processes or packaging format conversion.

Q: What is the impact of forward voltage differences between SM1206BWC (3.9V) and substitute parts (3.2V to 3.5V)?

A: Forward voltage differences directly affect circuit current-limiting resistor values. A 0.7V reduction in forward voltage (comparing SM1206BWC at 3.9V to 5988291102F at 3.2V) increases available voltage across the current-limiting resistor, resulting in higher LED current at fixed resistor values. Circuits must be recalculated using Ohm's Law: R = (Vsupply - Vf) / Iled. Failure to adjust resistor values will result in excessive LED current and reduced component lifespan.

Q: Why do substitute parts have higher millicandela ratings than the SM1206BWC?

A: Millicandela rating represents luminous intensity at specified test current (20mA). Higher ratings indicate greater light output at the same current. The SM1206BWC provides 9mcd, while Dialight parts provide 140mcd and Kingbright provides 100mcd. Higher intensity alternatives are suitable for applications requiring increased visibility. Selection should be based on application brightness requirements; using higher intensity components in circuits designed for lower intensity may result in excessive brightness and reduced component lifespan if current is not reduced through circuit modification.

Q: Is the reduced height of Dialight parts (0.70mm vs. 1.10mm) compatible with existing PCB designs?

A: The Dialight 5988291102F and 5988291107F have maximum height of 0.70mm compared to the SM1206BWC at 1.10mm. This 0.40mm height reduction is compatible with PCB designs and does not create mechanical interference issues. Reduced height components are suitable for space-constrained applications and are electrically equivalent. No PCB redesign is required for height reduction.

Q: What is the significance of MSL rating differences?

A: The SM1206BWC has Moisture Sensitivity Level (MSL) 4 with 72-hour moisture protection window. All substitute parts have MSL 3 with 168-hour moisture protection window. MSL 3 components provide extended protection against moisture absorption during storage and handling. Lower MSL ratings (higher numbers) indicate greater moisture sensitivity and shorter safe storage periods. MSL 3 components are superior for supply chain logistics and long-term inventory management.

Q: Can APT3216QBC/D (120° viewing angle) replace SM1206BWC (140° viewing angle)?

A: The APT3216QBC/D has narrower viewing angle of 120° compared to the SM1206BWC at 140°. This component is suitable only for applications where directional light output is acceptable and where the narrower viewing angle does not compromise visibility requirements. Applications requiring wide-angle light distribution should use substitute parts with 130° to 140° viewing angle specifications.

Q: Which substitute part is most suitable for automated Tape & Reel assembly processes?

A: The 5988291107F (Dialight), APT3216QBC/D (Kingbright), and SML-LX1206USBC-TR (Lumex) are all supplied in Tape & Reel (TR) format and are directly compatible with automated pick-and-place assembly equipment. The LTST-C150TBKT (Lite-On) is supplied in Cut Tape & Digi-Reel format and requires reel conversion. The 5988291102F (Dialight) is supplied in Strip format and is not compatible with standard reel-based assembly without manual handling or packaging conversion.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts are RoHS3 compliant, meeting the same regulatory requirements as the SM1206BWC. All parts are active products with current manufacturing status.