7030 lamp bead positive and negative electrode how to divide 7030 patch lamp bead how to distinguish the positive and negative electrode

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In the field of electronics, 7030 lamp bead is a widely used component, but many people may not know how to divide the positive and negative poles of 7030 lamp bead, especially for beginners is a big problem. This paper will detail the differentiation method between the positive and negative poles of the 7030 beads and how to correctly install the 7030 patch beads.

First: the positive and negative electrode of the 7030 lamp bead

7030 Light bead is a light-emitting diode that is widely used in electronic devices because of its small size and bright light emitting. Before installing the 7030 beads, we need to know the positive and negative poles of the 7030 beads.

7030 The beads usually have two feet, one of which is the positive pole and the other is the negative pole. On the two feet of the 7030 lamp beads, there is usually a shorter foot and a longer foot, and the longer foot is generally the positive pole foot. In addition, the positive pole of the 7030 bead can be judged by appearance. On the positive foot of the bead, there is usually a bulge or a small triangle, which is to facilitate the user to distinguish between the positive and negative poles.

Second: 7030 lamp bead installation method

Before installing the 7030 lamp beads, we need to prepare some necessary tools, such as the multimeter, welding tools, etc. Before welding, it is necessary to distinguish the positive and negative poles of the 7030 beads and determine the position of the beads as needed.

Next, we need to measure the positive and negative poles of the bead with a multimeter. Adjust the multimeter to the voltage gear, and then connect the positive and negative poles of the lamp bead to the two interfaces of the multimeter respectively. If the brightness of the lamp bead becomes stronger, it means that the connection is correct, otherwise the positive and negative poles of the lamp bead need to be replaced.

Next, we need to weld the lamp beads to the circuit board. Before welding, it is necessary to apply a layer of welding aid, and then align the positive and negative poles of the lamp bead at the pad for welding. After welding, use the multimeter to ensure the connection.

Third: 7030 patch lamp bead differentiation method

7030 The patch lamp bead is a commonly used surface mounting element, with its small size, good luminous effect, and is widely used in the production of electronic products. Unlike the 7030 lamp beads, the positive and negative poles of the 7030 patch lamp beads are more difficult to distinguish. Therefore, before installation, we need to study the appearance structure properly in order to install correctly.

7030 The positive and negative poles of the patch lamp bead are generally marked at the bottom. Usually, at the positive pole of the patch bead, there is a short horizontal line, or a small dot. In addition, some manufacturers will also mark it on the outer packaging, so that users can install it correctly.

Fourth: 7030 patch lamp bead installation method

Before installing the 7030 patch lamp beads, we need to prepare some necessary tools, such as welding tools, tin absorber, etc. Before installation, it is necessary to distinguish the positive and negative poles of the patch bead and determine the position of the bead as needed.

Next, we need to paste the patch lamp beads to the circuit board. Before pasting, it is necessary to apply some welding additives to the welding pad of the circuit board to facilitate welding. Then, the positive and negative poles of the patch bead align with the pad for welding. After welding, remove the excess solder with a tin absorber to ensure normal connection.

Fifth: how to avoid the lamp bead damage

When installing 7030 beads or 7030 patch beads, we need to pay attention to the following points:

1. Do not reverse the positive and negative connection of the bead, otherwise it will cause the bead to burn.

2. The positive and negative poles of the lamp bead should not be connected backwards, otherwise it will lead to a short circuit.

3. Do not use too much solder during welding, otherwise it will cause the lamp bead to fail.

4. Before welding, apply a layer of welding additives to make the welding smoother.

5. After welding, use a multimeter to confirm that the connection is normal.

Finally, the above is for "7030 lamp bead positive and negative how to divide 7030 patch lamp bead how to distinguish the positive and negative" how do you think? For more, check out the recommendations below, which is a summary of this article

This paper mainly introduces the differentiation method of the positive and negative poles of the 7030 bead, and how to correctly install the 7030 patch bead. When installing the beads, we need to pay attention to the correctness of the connection to avoid component damage or short circuit. I hope this article can help beginners and make it easier for them to make electronic devices.