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2SB824 replacement.


I have a few ideas but I may be wrong. What would be a good replacement part for a 2SB824?

2SB817 is a little more robust .....
Palomar MAX MOD is even better ....... a little bigger in physical size, but is a drop in replacement. Will have to drill a new mounting hole 1/4" ~ 5/16" higher in the chassis, but is very good upgrade ......
 
2SB817 is TO3 P - flat pack package - all listed above are size equivalents.

Else 2SA1012 converts to 2SB826 PNP 12A

The TO-220 has the power wattage dissipation limitation.
 
Thanks mike that sounds better. This is a part I never delt with before. And my choises would have been wrong. Glad I asked.

Andy the smaller replacements are a lot less robust.:)
 
I hear ya!

Was just saying the TO-220 types have only so much wattage they can dissipate - the TO-3P and the 247 styles have the bigger die surface area to drain off the heat.

The problem is with the radio - not the part = the size needed to upgrade versus the amount of room the radio actually has for that.

A TO3-P Flat pack is a big transistor - can't squeeze them in too well on a PC-122. At least not without several extensions ...

Hey, as long as you got room!

:+> Andy <+:
 
I hear ya!

Was just saying the TO-220 types have only so much wattage they can dissipate - the TO-3P and the 247 styles have the bigger die surface area to drain off the heat.

The problem is with the radio - not the part = the size needed to upgrade versus the amount of room the radio actually has for that.

A TO3-P Flat pack is a big transistor - can't squeeze them in too well on a PC-122. At least not without several extensions ...

Hey, as long as you got room!

:+> Andy <+:
Yes Andy this is a Realistic TRC-485 almost the same as a PC-122
 
Hopefully you can make it fit without drilling an additional mounting hole. I hate the process of cleaning up all the metal debris scattered about the radio. If it’s steel, try placing a powerful magnet close to the drill bit. My favorite magnet for that purpose can be found inside a bad hard drive. Those extremely powerful flat magnets are also great for finding embedded stud screws in your drywall.
 
Sunbulls... A saw a video today how a guy used the same magnet under a roof panel to mount a magnetic antenna on a ford aluminum cab pick up.

I use a whitney punch. but am putting in a BD912 in this.
 
Nomad I knew there was a TIP number that would fit. I used one once before and was sure I had notes on it in my Realistic file but somehow could not find the notes. Thank You.
 

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