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SML-D12M8WT86 Yellow-Green Chip LED: A Reliable Choice for Miniaturized Status Indication
9/15/2026 6:20:02 PM
ROHM Semiconductor, as a globally renowned semiconductor manufacturer, has a product line covering a wide range from integrated circuits to discrete devices. In today's growing demand for miniaturization and high reliability, ROHM's SML-D12M8WT86 LED has become a preferred solution for many electronic device designers due to its excellent performance.
Product Positioning and Core Features
The SML-D12M8WT86 belongs to ROHM's EXCELED™ series of yellow-green surface-mount chip LEDs. It uses an AlGaInP (aluminum gallium indium phosphide) chip structure and is encapsulated in milky-white diffused resin, effectively improving the uniformity of light output. Its core positioning is to provide stable, clear status indication within a limited space.
The most prominent feature of this device is its ultra-small 0603 (1608 metric) package, with physical dimensions of only 1.6 mm × 0.8 mm × 0.55 mm, allowing it to be easily integrated into space-sensitive electronic products such as smartphones and wearable devices.
Key Specifications at a Glance
|
Parameter |
Specification |
|
Emitting Color |
Yellowish-Green |
|
Forward Voltage (Vf) |
Typical 2.2 V (range 1.2 V ~ 2.7 V) |
|
Forward Current (If) |
20 mA |
|
Dominant Wavelength (λD) |
Typical 572 nm (range 569 nm ~ 575 nm) |
|
Luminous Intensity |
Typical 25 mcd (range 10 mcd ~ 63 mcd) |
|
Power Dissipation |
54 mW |
|
Operating Temperature |
-40°C ~ +85°C |
|
Package Size |
1.6 × 0.8 × 0.55 mm (0603) |
|
RoHS |
Compliant |
The above parameters are compiled from ROHM's official product page and authorized distributor data.
Typical Applications
Thanks to its miniaturization and high reliability, the SML-D12M8WT86 has a wide range of applications. In consumer electronics, it is commonly found in smartphones, tablets, and TWS earbuds, used to indicate power, charging, or Bluetooth connection status. In home appliances and office equipment, it can serve as a function indicator for routers, smart speakers, or printers. In addition, automotive-grade models in this series (such as the SML-D12M8WT86M) comply with the AEC-Q102 standard and can be used for interior switch backlighting or instrument panel indication.
Frequently Asked Questions
Q: What are the benefits of the "milky-white diffused resin" package used in the SML-D12M8WT86?
A: The milky-white diffused resin can evenly scatter the light emitted by the LED chip, making the emitting surface appear softer and more uniform. This avoids the "hot spot" phenomenon that may occur with traditional transparent packaging, thereby providing a more comfortable visual indication effect.
Q: How do I determine the current-limiting resistor value when designing a circuit?
A: Assuming a 5 V power supply, based on a typical forward voltage of 2.2 V and a forward current of 20 mA, the current-limiting resistor is R = (5 V - 2.2 V) / 0.02 A = 140 Ω. In practical applications, it is recommended to choose a standard value such as 150 Ω, and ensure the resistor's power rating is sufficient.
Q: Does this LED have different luminous intensity grades?
A: Yes. According to the datasheet, the luminous intensity of the SML-D12M8WT86 is divided into 4 brightness grades, ranging from 10 mcd to 63 mcd, with a typical value of 25 mcd. This means that during large-volume procurement, the brightness of products in the same batch will be controlled within a narrower range to ensure display consistency.
Conclusion
ROHM's SML-D12M8WT86 is an indicator LED that strikes an excellent balance among miniaturization, reliability, and performance. Its standard 0603 package and mature AlGaInP technology make it a robust choice for status indication in everything from consumer electronics to industrial equipment and even automotive electronics. For engineers pursuing miniaturized designs and stable supply, this is a trustworthy component.
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