BLW78 Datasheet, PDF (9/16 Pages) NXP Semiconductors – HF/VHF power transistor

Philips Semiconductors
HF/VHF power transistor
Product specification
BLW78
OPERATING NOTE
Below 50 MHz a base-emitter resistor of 4,7 Ω is
recommended to avoid oscillation. This resistor must be
effective for r.f. only.
handboo_rik_,,_xh³ⁱalfpage
(Ω)
2
1
ri
0
xi
−1
MGP553
xi
ri
−2
−3
0
100
f (MHz)
200
V_CE = 28 V; P_L = 100 W; T_h = 25 °C;
typical values; class-B operation.
Fig.12 Input impedance (series components).
6
handbook, halfpage
RL, XL
(Ω)
4
RL
MGP554
2
XL
0
0
100
V_CE = 28 V; P_L = 100 W; T_h = 25 °C;
typical values; class-B operation.
f (MHz)
200
Fig.13 Load impedance (series components).
30
handbook, halfpage
Gp
(dB)
20
typ
10
MGP555
0
0
100
f (MHz)
200
V_CE = 28 V; P_L = 100 W; T_h = 25 °C;
typical values; class-B operation.
Fig.14
August 1986
9