在General inspection instruction的PART AC里面,有这样一段话:
Substitution of Non-Specified PWB's - Before a printed wiring board may be used, current UL certification documentation must be checked to ensure that the maximum solder temperature and dwell time is as indicated and that the printed wiring board has minimum flammability and operating temperature ratings as specified in the individual Test Reports or other specified requirements. Acceptable UL certification documentation includes: (a) the current edition of the Recognized Component Directory or Supplement; (b) the UL Online Certification Directory (http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.html).
上面这段话的意思是不是说,在使用印刷电路板之前,必须查阅当前的UL认证文档,以确保单个测试报告或其它规范要求中的最高焊接温度和焊接停留时间为规定值,并且其印刷电路板已达到规定的最低易燃和工作温度等级?
这里的solder temperature和dwell time 是指锡炉的温度和驻留时间,还是包括手动焊接时烙铁的温度和驻留时间?这个温度和驻留时间是不是指PCB的UL档案中的solder的温度和时间?
还有,PCB上是否一定要打上UL认可元件标志,公司名称,型号?这些信息如果是打在包装上,包装材料是否需要PGAA的认证?