I would say it is a combination of the "Flat Lug Leads" and a "Bottom Thermal Plane Termination (8.3.14)
Veronika Anderson C.I.D | Sr. Electrical/Mechanical Design Engineer | Excelitas Technologies
Office: +1 626.967.9521 x 236
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-----Original Message-----
From: DesignerCouncil [mailto:[log in to unmask]] On Behalf Of [Jeffrey] [Jenkins]
Sent: Tuesday, August 26, 2014 8:36 AM
To: [log in to unmask]
Subject: Re: [DC] Type of Footprint
HI James,
I pulled the datasheet on this part and I'd probably use the IPC-A-610 Rev E para 8.3.9 "Flat Lug Leads" for guidance. Reason that I'd not use the bottom termination is because you have toe and side fillets for this part, and that the leads more closely matches the flat lug. This footprint also addresses the joint going beneath the part with note 4.
One quite often has to piece together an acceptable standard for parts that aren’t covered. When that occurs it's usually best to find the one that closely matches and then get everyone's (customer, QA, Eng, ETC) buy in.
Best Regards,
-Jeffrey
Jeffrey A. Jenkins CID+,CIT (IPC-A-610)
Senior PCB Staff Designer || L-3 Linkabit || Ph: 858-552-9832 || [log in to unmask]
>>
>> -----Original Message-----
>> From: DesignerCouncil [mailto:[log in to unmask]] On Behalf Of
>> James Jackson
>> Sent: Monday, August 25, 2014 7:29 PM
>> To: [log in to unmask]
>> Subject: [DC] Type of Footprint
>>
>> Diodes, Inc. has a pattern called PowerDI 123.
>>
>> These diodes are used on a board that is inspected to IPC-A-610
>> (latest rev).
>>
>> My question is this...
>>
>> Per Section 8 of the standard, what are the PowerDI 123 parts
>> classified as?
>>
>> I believe they fall into...
>>
>> 8.2.1 Chip Components - Bottom Only Terminations
>>
>> Someone else says that they are...
>>
>> 8.2.9 - Flat Lug Leads
>>
>> I am thinking that the Flat Lug Leads are the RF transistor category
>> parts.
>>
>> Anyway, we both may be wrong. Is there anyone who has knowledge that
>> can guide me in the right direction and help identify the type of
>> part that the PowerDI 123 is?
>>
>> Thanks in advance.
>>
>> Regards,
>>
>> James Jackson
>>
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