carrier
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carrier [2012/11/11 09:07] – [Leadframe] azonenberg | carrier [2015/12/17 23:30] (current) – [Bonding wire] azonenberg | ||
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====== Resin mould ====== | ====== Resin mould ====== | ||
- | Its purpose is to protect the fragile die contained within. This includes physical stress and chemical stress such as moisture. On more advanced chips, it may also provide radiation protection or protections against reverse engineering. Typically an epoxy resin allowed | + | [[carrier: |
+ | |||
+ | Its purpose is to protect the fragile die contained within. This includes physical stress and chemical stress such as moisture. On more advanced chips, it may also provide radiation protection or protections against reverse engineering. Typically an epoxy resin mixed with various additives such as glass. | ||
====== Leadframe ====== | ====== Leadframe ====== | ||
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The center portion is called by many names. | The center portion is called by many names. | ||
+ | * Paddle (as found in [[http:// | ||
+ | * Die mounting paddle [Plastic MEMS 68] | ||
* Carrier island (eg by Beck's failure analysis) | * Carrier island (eg by Beck's failure analysis) | ||
- | * Paddle (as found in US patent [[http:// | ||
* Mounting surface (as found in [[http:// | * Mounting surface (as found in [[http:// | ||
- | * Die attach pad (as found [[http:// | + | * Die attach pad (as found [[http:// |
* Ceramic chip has "gold backing" | * Ceramic chip has "gold backing" | ||
- | As Beck's failure analysis is a well written published work I refer to it as a " | + | As Beck's failure analysis is a well written published work I originally referred |
+ | |||
+ | [[carrier: | ||
====== Bonding wire ====== | ====== Bonding wire ====== | ||
- | Thin, usually gold, wires to electrically connect the leadframe to the die. They are typically welded die or connected via conductive epoxy. Connection to the leadframe is probably welded, need some evidence though. | + | Thin, usually gold, wires to electrically connect the leadframe to the die. For more details see the article on [[bonding: |
====== Types ====== | ====== Types ====== | ||
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[[carrier: | [[carrier: | ||
+ | ====== References ====== | ||
+ | * Study and characterization of plastic encapsulated packages for MEMS (Plastic MEMS): http:// |
carrier.1352624847.txt.gz · Last modified: 2013/10/20 14:59 (external edit)