PTB20188 - 4 Watts P-Sync/ 470-860 MHz UHF TV Linear Power Transistor
The 20188 is an NPN common emitter UHF power transistor intended for 25 Vdc class A operation from 470 to 860 MHz.
It is rated at 4 watts output power, and may be used for both CW and PEP applications.
Ion implantation, nitride surface passivation and gold metallization are used to ensure excellent