### SML-R13YWT86P: Electronic Specifications and Overview The **SML-R13YWT86P** is a high-brightness, surface-mount (SMD) Light Emitting Diode (LED) manufactured by **ROHM Semiconductor**. It belongs to the SML-R1 series and is commonly used in compact consumer electronics for status indication. --- ### 1. Key Technical Specifications | Parameter | Specification | Details | | :--- | :--- | :--- | | **Color** | Yellow | Dominant Wavelength: ~590nm | | **Package Size** | 0603 (Metric 1608) | 1.6mm x 0.8mm x 0.36mm | | **Luminous Intensity** | 25 mcd to 63 mcd | Measured at $I_F = 20mA$ | | **Forward Voltage ($V_F$)** | 2.0V (Typical) | Max 2.4V | | **Forward Current ($I_F$)** | 20mA | Standard operating current | | **Operating Temp** | -40°C to +85°C | Industrial grade range | | **Lens Type** | Milky White | Diffused lens for wider viewing angle | --- ### 2. Component Features * **Ultra-Thin Profile:** With a height of only 0.36mm, it is ideal for thin devices like smartphones, wearables, and membrane switches. * **Material Composition:** It utilizes **AlGaInP** (Aluminium Gallium Indium Phosphide) technology, which provides high efficiency and reliability for yellow and orange spectrums. * **Viewing Angle:** Due to the milky white diffused lens, the light distribution is broad, reducing "hot spots" in indicator windows. --- ### 3. Application Examples The SML-R13YWT86P is versatile for several low-power lighting applications: 1. **Backlighting:** Small LCD screens or button keypads. 2. **Status Indicators:** Network routers, battery charging signals, or power-on LEDs. 3. **Wearable Tech:** Fitness trackers where PCB space and thickness are extremely limited. --- ### 4. Footprint and Soldering (Code Sample) When designing a PCB for this part, the landing pattern follows the standard 0603 SMD footprint. Below is a generic representation of the pad dimensions in millimeters: ```markdown PCB Land Pattern (Approximate): - Pad Width: 0.8mm - Pad Height: 0.6mm - Gap between pads: 0.8mm - Total Footprint: 2.4mm x 0.8mm ```