1206 LED SMD Blue Zener Diode LED Protection

1206 SMD LED Blue color with Zener Diode 

This is a Blue SMD LED that pakcage in 1206 SMD LED case. Which make it be a mini blue SMD LED. 

Normally there will just one single chip inside of blue LED. But in this 1206BC-ZR, please check in the picture as follow, there have two chips inside the package. One is white and conntected with two gold wire, which is blue LED chip. It's the light source of the SMD LED. On the other hand, there have a tinny black chip, which is Zener Diode. 

What is the Zener diode, why there will have a zener diode and what is it work for?

First, zener diode is a special type of diode designed to reliably allow current to flow"backwards" when a certain set reverse voltage, known as the zenner voltage, is reached. For some application, LED might be damaged by high voltage or static electricity. In order to protect the LED, it will be better when we add a zener diode to the inner circuit. Then the zener diode can protect the LED from high voltage and static electrisity. 

Of course, not just this 1206 SMD LED, if you need some protection for other SMD LED or LED lamp. Such as 0603 SMD LED, 2835 SMD LED 5050 SMD LED ect. It's all available.

1206 SMD LED Size: 

*This size are also available in multi-wavelength LED, such as RGB LED, Amber LED or some custom LED ect*

Electrical Parameters:

*Pulse forward current confition: Duty 1% and Pulse width=10us.

*Soldering confition: Soldering confition must be completed with 3 secongds at 260℃

*Luminous intensity is measured by ZWL600.

*λD is derived from the CIE chromaticity diagram and represents the single wavelength which defines the color of the device.

Product Detail of 1206 SMD LED with Zener Diode:

In LED production progress, every detail are all very important to the quanlity of our SMD LED. 

Pure gold wire can make sure the LED have more stable performance when it under the high current. Stable LED chip can keep the LED emits uniform brightness and color. High quality epoxy can portect the LED chip inside well and the Zener diode can protect the LED from the high voltage and static electrisity; 

Main application of Blue 450nm LED, 460nm LED and 470nm LED:

Manufacturing Process of SMD LED:

HANDLING PRECAUTIONS:

Compare to epoxy encapsulant that is hard and brittle, silicone is softer and flexible Althouth its characteristiec significantly reduces thermal stress, it is more susceptible to damage by extemal mechanical force. As a result, special handling precautions need to be observed during assembly using silicone encapsulated Led products. Failure to comply might lead to damage and premature failure of the led

1. Handle the component along the side surfaces by using forceps or appropriate tools.

2, Do not directly touch or handle the silicone lens surface. It may damage the internal circuitry.

3, Do not stack together assembled PCBS containing exposed LEDs. Impact may scratch the silicone lens or damage the internal circuitry.

4, 4-A The inner diameter of the SMD pickup nozzle should not exceed the size of the LED to prevent air leaks;

    4-B A plible material is suggested for the nozzle tip to avoid acratching or damaging the LED surface during pickup.

    4-C The dimension of the component must be accurately programmed in the pick-and-place machine to insure precise pickup and avoid damage during production;

    4-D As silicone encapsulation is permeable to gases, some corrosive substances such as H2S might corrode silver plationg of leadframe. Special care should be taken if an LED with silicone encapsulation is to used near such substances. 

5, Please aviod continued exposure to the condensing moisture environment and keep the product away from repid transitions in ambiemt temperature.

6, Product in the original sealed package is recommended to be assembled within 24 hours of opening.