Toshiba 2SC4793/2SA1837 reborn

The SOA curves for the newer Toshiba parts are way lower at higher voltages, looking at their datasheets Unavoidable with smaller dies. 2SA1837 , 2SC4793 still made by UTC, sold at Profusion. They meet all specs. For power transistors, 2SA1302G , 2SC3281G from ON semi are just like originals, and great SOA you won't find in small die formats.
 
The SOA curves for the newer Toshiba parts are way lower at higher voltages, looking at their datasheets Unavoidable with smaller dies. 2SA1837 , 2SC4793 still made by UTC, sold at Profusion. They meet all specs. For power transistors, 2SA1302G , 2SC3281G from ON semi are just like originals, and great SOA you won't find in small die formats.
Edit : I meant that Toshiba 2SA1302 , 2SC3281 is now ON MJL1302G , MJL3281G
 
The SOA curves for the newer Toshiba parts are way lower at higher voltages, looking at their datasheets Unavoidable with smaller dies. 2SA1837 , 2SC4793 still made by UTC, sold at Profusion. They meet all specs. For power transistors, 2SA1302G , 2SC3281G from ON semi are just like originals, and great SOA you won't find in small die formats.
The die is same, as all internal capacitance are same. The package is the only difference.
 
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