Thick or thin film ceramic substrates are used for modem microwave circuit.Solderabilit.Solderability of film conductor as soldering pad has direct influence son reliability of circuit.

• 现代微波电路大多采用厚膜或薄膜陶瓷基板制作，焊接区为股导体，其焊接性直接影响电路的可靠性。