Do you know the basic knowledge of PCBA board?

Pcba boards are different from PCB circuit boards in many ways, whether it is electronic components or processing processes, there are more or less differences. Today we will introduce the basic knowledge specific to PCBA boards!

Three-in-one board

The three-in-one board is a kind of board that eliminates lithium battery protection in order to save costs.

Basic functions: over-discharge, over-charge, over-current, short-circuit, under-voltage

Because all functions are controlled by a single IC, if this IC is broken, it may cause the PCBA board to lose control. During the charging process, if the IC is broken, the circuit may still be connected. Without IC overcharge protection, the power supply will still be charging when it is fully charged, causing the battery to overcharge, the battery to heat up, and even serious damage may occur. Battery burning or explosion.

With lithium battery protection board

PCBA with lithium battery protection is equivalent to double protection of the lithium battery of the PCBA circuit board in the circuit.

Basic functions: over-discharge, over-charge, over-current, short-circuit, under-voltage. In other words, when the big IC breaks down, two small ICs can control the entire circuit. After the power supply is fully charged, the circuit will be disconnected for protection. Avoid hurting people and causing greater losses.

Scraps

The so-called scraps are the scraps discarded by the placement machine when mounting the PCB, or the scraps removed during the repair process. These scraps are not "waste", they can be recycled and reused!

Ordinary single panel

The input voltage is generally 5V and the current is 1A (±200MAH)

The output voltage is generally 5V and the current is 1A (±200MAH)

These are the little knowledge about PCBA boards. Judging from many details, most of them are protecting lithium batteries, protecting the safety of circuit boards and even the safety of the entire electronic equipment to prevent some irreversible safety accidents.