5mm LED - Yellow 590nm 30 Degree Viewing Angle
Date：
2024-06-18
The 5mm yellow LED you're referring to has the following specifications:
- Color: Yellow
- Wavelength: 590nm
- Viewing Angle: 30 degrees
Key Features:
- Size: The LED is 5mm*8.7 in diameter.
- Color and Wavelength: It emits yellow light with a wavelength of 590 nanometers, which is typical for yellow LEDs.
- Viewing Angle: The light emitted from the LED spreads out over a 30-degree angle, which is relatively narrow and useful for applications where focused light is needed.
Common Applications:
- Indicator Lights: Used in electronic devices to indicate status (on/off, activity).
- Displays: Used in various display technologies.
- Signage: Used in signs and signal lights where a yellow color is needed.
- DIY Projects: Popular in hobby electronics for various custom projects.
Additional Specifications:
- Forward Voltage: Typically around 2.0-2.2V.
- Forward Current: Generally about 20mA.
- Luminous Intensity: Varies but often in the range of 500 to 1500 mcd (millicandela) depending on the specific LED.
Usage Tips:
- Current Limiting Resistor: Always use a current-limiting resistor in series with the LED to prevent it from burning out. The value of the resistor can be calculated using Ohm's Law: R=Vsupply−VforwardIforwardR = \frac{V_{supply} - V_{forward}}{I_{forward}}R=IforwardVsupply−Vforward.
- Polarity: LEDs are directional components with a positive (anode) and negative (cathode) terminal. The longer lead is typically the anode (+), and the shorter lead is the cathode (-).
Example Circuit:
If you're connecting the LED to a 5V power supply, you can calculate the resistor value as follows:
- Supply Voltage (V_supply): 5V
- Forward Voltage (V_forward): 2.1V (average for yellow LEDs)
- Forward Current (I_forward): 20mA (0.02A)
R=5V−2.1V0.02A=2.9V0.02A=145ΩR = \frac{5V - 2.1V}{0.02A} = \frac{2.9V}{0.02A} = 145 \OmegaR=0.02A5V−2.1V=0.02A2.9V=145Ω
So, you would use a resistor close to 145 ohms, commonly 150 ohms as a standard value.
By following these guidelines, you can effectively incorporate a 5mm yellow LED with a 590nm wavelength and a 30-degree viewing angle into your projects.
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