MRF240A

The MRF240A is a kind of NPN silicon RF power transistor. It is designed for class C amplifier applications in VHF mobile radios.

There are some features of MRF240A as follows: (1)PG=9.0 dB min. at 40 W /160 MHz; (2)c=55% min. at 40 W /160 MHz; (3)Omnigold metalization system.

The following is about the maximum ratings of MRF240A: (1)IC: 8.0 A; (2)VCBO: 36 V; (3)VCEO: 18 V; (4)VEBO: 4.0 V; (5)PDISS: 100 W @ TC = 25; (6)TJ: -65 to +200 ; (7)TSTG: -65 to +150; (8)JC: 2.9/W.

The last one is about the characteristics of MRF240A at TC=25. (1): the minimum BVCES at IC=20 mA is 36 V; (2): the minimum BVCEO at IC=20 mA is 18 V; (3): the minimum BVEBO at IE=5.0 mA is 4.0 V; (4): the maximum ICBO at VCB=15 V is 10 mA; (5): the minimum hFE at VCE=5.0 V, IC=4.0 A is 10 and the maximum is 150; (6): the maximum Cob at VCB=12.5 V, f=1.0 MHz is 125 pF; (7): the minimum PG at VCC=12.5 V, POUT=40 W, f=160 MHz is 9.0 dB and the typical is 10 dB ; (8): the minimum C at VCC=12.5 V, POUT=40 W, f=160 MHz is 55%.