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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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