ST意法半导体部分封装外观不同的原因
发布时间：2018/7/7
案例： 
某LED生产工厂客户反馈采购同一个型号L78M05CDT-TR前后从不同供应商购买的产品有外观明显差异，其中散热片一个有凹槽一个无凹槽（见图1）这是因为封装工厂工艺不同，实际都为ST原厂出品,并不影响使用,原厂有出具PCN文件声明，另外芯片本体打字有区分不同的封装工厂。不同的代码对应代表不同的封装工厂（见图2）需要PCN文件附件请联系在线客服索取。
图1
图2
TO-252封装外观不同大致有以下型号：
L78M05ABDT
L78M05ABDT-TR
L78M05ACDT
L78M05ACDT-TR
L78M05CDT
L78M05CDT-TR
L78M06ABDT
L78M06ABDT-TR
L78M06ACDT-TR
L78M06CDT
L78M06CDT-TR
L78M08ABDT
L78M08ABDT-TR
L78M08ACDT
L78M08ACDT-TR
L78M08CDT
L78M08CDT-TR
L78M09ABDT
L78M09ABDT-TR
L78M09ACDT
L78M09ACDT-TR
L78M09CDT
L78M09CDT-TR
L78M12ABDT
L78M12ABDT-TR
L78M12ACDT
L78M12ACDT-TR
L78M12CDT
L78M12CDT-TR
L78M15ABDT
L78M15ABDT-TR
L78M15ACDT
L78M15ACDT-TR
L78M15CDT
L78M15CDT-TR
L78M18ABDT
L78M18ABDT-TR
L78M18ACDT-TR
L78M18CDT
L78M18CDT-TR
L78M20ABDT
L78M20ABDT-TR
L78M20ACDT-TR
L78M20CDT-TR
L78M24ABDT
L78M24ABDT-TR
L78M24ACDT
L78M24ACDT-TR
L78M24CDT
L78M24CDT-TR
LD1117ADT
LD1117ADT-TR
LD1117ADT18
LD1117ADT18TR
LD1117ADT25
LD1117ADT25TR
LD1117ADT33
LD1117ADT33TR
LD1117DT
LD1117DT18
LD1117DT18TR
LD1117DT25
LD1117DT25C
LD1117DT25CTR
LD1117DT25TR
LD1117DT28TR
LD1117DT30
LD1117DT30CTR
LD1117DT30TR
LD1117DT33
LD1117DT33C
LD1117DT33CTR
LD1117DT33TR
LD1117DT50
LD1117DT50C
LD1117DT50CTR
LD1117DT50TR
LD1117DTTR
L78M05ABDT
L78M05ABDT-TR
L78M05ACDT
L78M05ACDT-TR
L78M05CDT
L78M05CDT-TR
L78M06ABDT
L78M06ABDT-TR
L78M06ACDT-TR
L78M06CDT
L78M06CDT-TR
L78M08ABDT
L78M08ABDT-TR
L78M08ACDT
L78M08ACDT-TR
L78M08CDT
L78M08CDT-TR
L78M09ABDT
L78M09ABDT-TR
L78M09ACDT
L78M09ACDT-TR
L78M09CDT
L78M09CDT-TR
L78M12ABDT
L78M12ABDT-TR
L78M12ACDT
L78M12ACDT-TR
L78M12CDT
L78M12CDT-TR
L78M15ABDT
L78M15ABDT-TR
L78M15ACDT
L78M15ACDT-TR
L78M15CDT
L78M15CDT-TR
L78M18ABDT
L78M18ABDT-TR
L78M18ACDT-TR
L78M18CDT
L78M18CDT-TR
L78M20ABDT
L78M20ABDT-TR
L78M20ACDT-TR
L78M20CDT-TR
L78M24ABDT
L78M24ABDT-TR
L78M24ACDT
L78M24ACDT-TR
L78M24CDT
L78M24CDT-TR
LD1117ADT
LD1117ADT-TR
LD1117ADT18
LD1117ADT18TR
LD1117ADT25
LD1117ADT25TR
LD1117ADT33
LD1117ADT33TR
LD1117DT
LD1117DT18
LD1117DT18TR
LD1117DT25
LD1117DT25C
LD1117DT25CTR
LD1117DT25TR
LD1117DT28TR
LD1117DT30
LD1117DT30CTR
LD1117DT30TR
LD1117DT33
LD1117DT33C
LD1117DT33CTR
LD1117DT33TR
LD1117DT50
LD1117DT50C
LD1117DT50CTR
LD1117DT50TR
LD1117DTTR
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