How to choose a furnace temperature tester?

1. With the development of the times and the changes in the electronics industry, according to the needs of product process improvement, in the SMT process of the electronics industry, usually a 12 channel furnace temperature tester is more suitable, which can balance simple and slightly complex processes. However, for splicing (multiple connected boards) and IC pitch<0.3mm (BGA, CSP, DIE...), the more channels to choose the furnace temperature tester, the better. In the reflow soldering process of these products, a temperature difference of 5 ℃ on the board surface is sufficient to cause serious consequences of cold welding. For companies that require BGA ball planting, as the temperature difference between the four corners during welding cannot exceed 8 ℃, it is better to purchase a furnace temperature tester with more channels. In the semiconductor industry, especially for furnace temperature testers used in IC packaging, it is best to choose based on how many units a SubStrategy has. As a semiconductor company in the upstream industry of SMT, it welds wafers (DIEs) rather than chips (ICs), and the temperature required for welding is more accurate. Therefore, the number of channels selected should be at least 16. However, in the industry, both the American KIC furnace temperature tester and the British DATAPAQ furnace temperature tester have a maximum of 12 channels, while only Wickon from Germany has 12, 16, 20, 24, 28, and 32 channel furnace temperature testers. The authorized agent of Wickon furnace temperature tester is Shenzhen Shihan Electronic Technology Co., Ltd. (www.Wickon. net).

2. First, compare the parameters: Usually, each furnace temperature tester will list the characteristics of their own product. Of course, the accuracy of these parameters cannot be fully trusted, but they can be used as a reference for initial selection. For example, if the "sampling frequency" is as fast as 0.01 seconds, it is definitely better than 0.1 seconds. Lithium batteries are definitely better charged than nickel hydrogen batteries, USB communication is definitely better than RS232, and memory (sampling points) is definitely better than small memory

3. Physical dimensions: Physical dimensions mainly refer to the width of the furnace temperature tester. If the width of the furnace temperature tester itself is too wide, it will make it difficult to place a PCB narrower than the furnace temperature tester on the track of the reflux furnace, which is very inconvenient. The suitable width (insulation box) is usually between 60-90mm. It should be as narrow as possible.

4. Lead free process: For the lead-free process of the furnace temperature tester, the main consideration is the insulation effect of the insulation box. Usually, after the lead-free process is completed, it is best not to exceed 50 ℃ for the internal temperature of the furnace temperature tester. Excessive internal temperature can cause unstable IC operation of the furnace temperature tester itself? Causing sampling temperature deviation!

5. Internal data storage, preferably capable of storing multiple sets of data to reduce unnecessary back and forth running time and improve the efficiency of the testing instrument's furnace temperature. It is generally recommended to store 24 sets of data.

6. Charging function: The charging function is quite important for furnace temperature testers. For KIC furnace temperature testers, changing the battery frequently can be a headache. However, changing the battery of DATAPAQ furnace temperature testers after two years is also a headache. Its battery is non-standard and the price is difficult to accept. Therefore, when choosing a furnace temperature tester, it is necessary to consider this vulnerable part. Of course, it is best not to charge for 365 days, but currently it seems that only the Wickon furnace temperature tester 365 on the market does not require charging. After reading the data, it will naturally charge and there will be a battery indicator light indicating an alarm, which is very practical.

7. PWI optimization function: This function was first created by the KIC furnace temperature tester. Many brands of furnace temperature testers now have this function, which is indeed a contribution to the reflow soldering process. For SMT process engineers, adjusting the flow welding curve back is the most worry free thing. Therefore, it is also necessary to consider it when purchasing, making it convenient for oneself, and improving the process is one of the essential software.

8. On site testing: Before purchasing, it is necessary to conduct on-site testing, as only on-site testing can identify problems

8.1: The stability of the instrument can be repeatedly tested on the same reflux furnace for comparison, and the problem can be identified.

8.2: The accuracy of the instrument can be tested and compared at different triggering temperatures and sampling frequencies.

8.3: Ease of use and completeness of software operations (especially for new companies, it is recommended to choose the simpler the operation, the better). A well-known brand of operating software is nested layer by layer, making people feel confused. Because the software is not structured or modular. Without a solder paste warehouse and equipment warehouse, it is impossible to conduct process analysis. This is a major flaw.

8. 4: After sales service: (It is best to have a longer warranty period, and the faster the repair cycle, the better. Of course, the more technical support points, the better.)

8.5 Price: There are many brands to choose from when purchasing a furnace temperature tester, and it is not difficult to achieve good quality at a reasonable price. Choosing the most suitable furnace temperature tester for oneself is the best option.

I choose to cooperate with a company that has technical strength and is relatively professional! For example, Shenzhen Shihan Electronic Technology Co., Ltd. is a relatively professional company. There are many brands, strong options, and relatively reasonable prices. They represent numerous international brands, and relatively speaking, their prices are quite competitive! Try it out!