PCB News - Purchase BGA soldering station

Purchase BGA soldering station

BGA soldering station is generally called BGA rework station. It is a special equipment used when BGA chips have soldering problems or need to be replaced with new BGA chips. Because the temperature requirements for BGA chip soldering are relatively high, heating tools (such as Hot air gun) cannot meet its needs. When the BGA soldering station is working, it uses the standard reflow soldering curve. Therefore, the effect of using it for BGA rework is very good. If you use a better BGA soldering station, the success rate can reach more than 98%.

As a maintenance person of a circuit board manufacturer, how should I choose my own equipment-BGA soldering station? In order for everyone to purchase the BGA soldering station they want contentedly, we will start from many directions and discuss together how to choose the BGA soldering station you want.

BGA soldering station purchase
1. The size range of the circuit board to be repaired

Decide the size of the work surface of the BGA soldering station you buy. Generally speaking, the size of ordinary notebooks and computer motherboards are smaller than 420x400mm. This is a basic indicator when selecting a model.

2. Soldering chip size

The maximum and minimum size of the chip must be known. Generally, the supplier will equip 4 nozzles. The size of the maximum and minimum chip determines the size of the optional nozzle.

3. Power supply

Generally, the main power wire of the individual repair shop is 2.5m2, and the power of the BGA soldering station should not be greater than 4500W, otherwise, the introduction of the power cord will be a hassle.

4. Is it 3 temperature zones

Including upper heating head, lower heating head, infrared preheating zone. Three temperature zones are the standard configuration. At present, products with two temperature zones appear on the market, including only the upper heating head and the infrared preheating zone. The welding success rate is very low. Please pay attention to it when buying.

5. Whether the lower heating head can move up and down

The lower heating head can move up and down, which is one of the necessary functions of the BGA soldering station. Because when welding a relatively large circuit board, the tuyere of the lower heating head is structurally designed to serve as an auxiliary support. If it can't move up and down, it can't play the role of auxiliary support, and the success rate of welding is greatly reduced.

6. Whether it has intelligent curve setting function

When applying the BGA soldering station, the temperature profile setting is the most important aspect. If the temperature curve of the BGA soldering station is not set correctly, the success rate of welding is very low, and the welding or disassembly is impossible. Now there is a product on the market that can set the temperature curve intelligently: GM5360 of Jinbangda Technology, the temperature curve setting is very convenient. BGA soldering station

7. Whether it has welding function

If the temperature curve setting is not accurate, using this function can greatly improve the welding success rate. The welding temperature can be adjusted during the heating process.

8. Does it have a cooling function

Generally, a cross-flow fan is used for cooling.

9. Whether built-in vacuum pump

When it is convenient to disassemble the bga chip, suck the BGA chip.

10. Do not choose BGA soldering station controlled by temperature instrument

BGA soldering stations controlled by temperature instruments have many problems. The main problem is the high failure rate. The current temperature control instruments on the market are basically fakes. Taiwan’s genuine temperature control instruments support temperature curves, and the price is 1200-2000 yuan/unit. BGA soldering station temperature control is the core function. Inferior temperature control instruments cannot guarantee temperature control accuracy and welding quality. The temperature meter data setting is cumbersome. You need to switch from number to number. After entering a temperature curve, you don't want to enter the second one, that is, the man-machine interface is very unfriendly.

11. BGA soldering station temperature control accuracy

Generally, the soldering temperature accuracy requirement of reflow soldering is ±1 degree Celsius, and the bga rework station with temperature control accuracy greater than ±1 degree Celsius is recommended not to buy, because the temperature control accuracy is low, there is no way to reach the precise temperature set by your temperature curve. Especially in the small pitch bga welding, it is extremely easy to produce bridging. Some company's products cannot achieve this accuracy because the control technology of temperature control accuracy is not good enough.

12. Is the actual temperature curve displayed on the screen?

When the temperature curve is displayed on the screen, some manufacturers only display the set curve instead of the actual temperature curve. This is very problematic. If he dare not open the actual temperature curve to the customer, it proves that his temperature control accuracy is very low.

Precautions for buying BGA soldering station
1. The equipment must have safety protection functions, such as failure of thermocouples, fans, and heating devices, no safety accidents can occur. BGA rework station

2. The selection of the components of the equipment must be good, and the wiring must be standardized.

3. The equipment has a self-test function, which is convenient for users to locate faults.

4. The interface settings are reasonable, the operation is convenient, and the function buttons are easy to find.

5. BGA soldering station in the second temperature zone cannot be purchased. Because the second temperature zone has only a preheating zone and an upper temperature zone, if you want to ensure the quality of welding, the temperature of the preheating zone must be adjusted to a very high temperature. The power of the preheating zone is very large, generally around 3000W, and the electricity consumption is only Become stress. If the preheating zone is not opened, it is impossible to weld well.

6. BGA soldering station with temperature control instrument type cannot be purchased. Because the quality of temperature control instruments is very poor, the failure rate is high. The temperature data setting is very inconvenient.

7. BGA soldering stations with lower heating heads that do not support the lifting function cannot be purchased. Because the heating head can move up and down, it is one of the necessary functions of the BGA soldering station. Because when welding a relatively large PCB, the tuyere of the lower heating head is structurally designed to serve as an auxiliary support. If it can't move up and down, it can't play the role of auxiliary support, and the success rate of welding is greatly reduced.

In the era of the Internet, countless BGA soldering stations have flooded our lives and the world, leading to the birth of a large number of difficult households. As the maintenance personnel of the SMT processing factory, you must carefully study these factors that determine the quality of the BGA soldering station, and choose a satisfactory BGA rework station for yourself.