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2024年1月18日 · Forces the board to be parallel to the TO3 mounting surface, which is inconvenient (most heat sinks are vertical for better convection, most boards are horizontal) Can't separate board from heatsink without desoldering it, which makes maintenance problematic. More expensive than plastic packages, more expensive and labor intensive mounting. etc.

2013年8月8日 · \$\begingroup\$ Also, TO-3 has a fairly unfavourable geometry for placing the silicon inside the package. The amount of silicon die that fits inside is very small considering the package footprint and the material between the substrate and heatsinkable outside profile is thick.

2015年7月28日 · Notice the dot above the capacitor. This connects the output of the PNP TO3 Transistors, the Capacitor Anode, and PIN 3 of the 7812, it's VOUT. This means they are electronically connected. The Capacitor is a filter capacitor for the 7812, for stability. All it needs to be is physically connected to the VOUT trace. Just like any other component.

2012年10月21日 · TO-3 devices are typically mounted on the inside of any enclosing heat sink, rather than the outside. The way you have mounted it would prevent the part from being soldered directly onto a PCB.

Installing a TO220 into a TO3 design is simple with a different size fastener for a smaller hole size and 5 in-lb max torque until you get into thermal design ( essential for any EE to learn) This biggest issue is max Pd depends on the heatsink on the board.

2016年6月22日 · The data sheet explicitly said not to open the TO3 package as beryllium oxide (BeO) was used for thermal transfer. Today I learnt that BeO ceramic can be used as an insulator in magnetrons in domestic microwave ovens, e.g. …

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2015年11月9日 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

2020年3月17日 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.