1. According to the needs of the product manufacturing process in the SMT process of the electronics industry, usually the 8-channel oven temperature tester is relatively modest and can take into account both simple and slightly complex processes. However, the number of channels for selecting the oven temperature tester for the puzzle (multiple plate) and IC pitch<0.3mm (BGA, CSP, DIE...) is better, during the reflow process of these products, A 5 degree plate surface temperature difference is enough to cause severe consequences of cold welding. For companies that have BGA ball rolling requirements, because the temperature difference between the four corners when welding is required cannot be >8 degrees, the number of channels is better when the furnace temperature tester is purchased. In the semiconductor industry, especially the oven temperature tester for IC packaging, it is best to select according to how many Units a SubStrate has. Because as a semiconductor company in the SMT upstream industry, welding is performed on a wafer (DIE) rather than a chip (IC), and the temperature required for its welding is more accurate. Therefore, the number of channels selected should be above 12. 2. First of all, the comparison of parameters: Usually each furnace temperature tester will list the characteristics of its own products, of course, the accuracy of these parameters can not be believed, but can be used as a reference for the primary selection, such as "sampling frequency "The fastest is 0. 01 seconds, certainly better than 0.1 seconds. Lithium batteries are certainly better than nickel-metal hydride batteries. USB communication is definitely better than RS232, and memory (sample points) is definitely larger than memory." The good... 3. Physical size: The physical size mainly refers to the width of the furnace temperature tester. If the width of the furnace temperature tester is too wide, it will cause the PCB with a narrower temperature than the furnace temperature tester to be difficult to place in the orbit of the reflow oven. Convenience. Usually suitable width (insulation box) is between 90---110mm. The narrower it should be, the better. 4. Lead-free process: The consideration of the lead-free process of the furnace temperature tester is mainly the insulation effect of the thermal insulation box. In general, the lead-free process temperature requirements are 20-30 degrees higher than the normal process. Will this 20-30 degrees cause the internal IC of the furnace temperature tester to be unstable? Cause sampling temperature is not accurate? In turn, lead-free process OK, the ordinary process must be OK. 5. On-site testing: Before the purchase, we must conduct on-site testing. Only on-site testing can detect the problem. I choose to build a technical strength and more professional company cooperation! For example, Shenzhen Branch can be sent to Automation Technology Co., Ltd. is a more professional company. KRC series of tester models are more optional, the price is relatively comparable Reasonable! Especially the world's largest brand they have a considerable price advantage! Do not try! Puncture Power On Off Current Transformer Puncture Power On Off Current Transformer,Current Transformer,Current Transformer With Puncture,Split Electric Quantity Acquisition Module Zibo Tongyue Electronics Co., Ltd , https://www.tongyueelectron.com
5.1: Stability of the instrument The same reflow oven can be tested repeatedly to compare, and the problem can be seen.
5.2: The accuracy of the instrument can be set to different trigger temperatures, different sampling frequencies for test comparison.
5.3: The ease of use and completeness of software operation (especially the simpler the new company suggests to choose the operation) The operation software of a well-known brand is layered on top of each other and makes people confused. Because the software is not structured, modular. Without a paste library or equipment library, process analysis is impossible. This is a big flaw.
5. 4: After-sales service (best warranty time is longer, the faster the maintenance cycle, the better, the more technical support points, the better.) f. Price Now buy the furnace temperature tester can choose many brands, to do the price Inexpensiveness is not difficult.