سٽي سائڊ آف 85 ٪ حاصل ڪريو
The IPC has provided a new generation of test coupons, the “D-Coupons” from Appendix A in the IPC-2221 standard. The testing criteria for the 4-wire Kelvin resistance test is provided in IPC-TM-650, Method 2.6.27A. The thermal shock is per IPC-TM-650, Method 2.6.7.2.
ڪوپن ڪوڊ ڏيکاريو