MRF492 Datasheet, PDF (2/2 Pages) Motorola, Inc – RF POWER TRANSISTOR NPN SILICON

20 STERN AVE.
SPRINGFIELD, NEW JERSEY 07081
U.S.A.
, One.
TELEPHONE: [phone]
[phone]
FAX: [phone]
MRF492, MRF492A
ELECTRICAL CHARACTERISTICS |TC = 25°C unless otherwise noted)
Characteristic
Symbol
Mln
Typ
M«x
Unit
OFF CHARACTERISTICS
Collector-Eminer Breakdown Voltage
(IC= lOOmAdc, IB = 0)
VIBRICEO 18
—
—
Vdc
Collector-Emitter Breakdown Voltage
(IC * 60 mAdc, VBE = 0)
VIBRICES ³⁶
—
—
Vdc
Emitter-Base Breakdown Voltage
IE =10 mAdc. lc = 0)
VIBHIEBO ^4.0
—
—
Vdc
Collector Cutoff Current
(Vce=13,6Vdc.VBE = OI
ICES
—
—
20
mAdc
ON CHARACTERISTICS
DC Current Gain
(lc * S.O Adc, VCE = S.O Vdc)
KFE
10
—
1SO
—
DYNAMIC CHARACTERISTICS
Output Capacitance
(VcB='5Vdc. IE-O. f * 1.0 MHj)
Cob
—
275
450
pF
FUNCTIONAL TESTS
Common-Emitter Amplifier Power Gain
(Vcc =12.8 Vdc, Pout = 70 W, f * 50 MHi)
GPE
11
13
—
dB
Collector Efficiency
(VCC = 1 2.5 Vdc, Pou, = 70 W. f = 50 MHz)
1
50
—
—
%
FIGURE 1 - 50 MHi TEST CIRCUIT
RFC2
-< * 12.5 Vdc
RF Input >
<r
C4i
Cl, C8 - 9.0-180 pF, Arco 463
C2. C3. C4 — 80-^80 pF, Arco 466
C5 — 1000 pF, 360 V, Unelco
CO — 10)iF, 2SVdc
C7 — 0.01 t.F. Ceramic
RFC1 — 10 /iH Molded Choke
RFC2 — 12 Turns. #18 AWG. Enameled Wire Closewound
on a 2 W Carbon Resistor
LI - 2 Turns, »18 AWG Enameled Wire, 0.4- ID,
0.15* Long
L2 — Loop. «12 AWG Wire. 0.6' High. 0.4' Wiee
L3 — 2 Turns, #12 AWG Wire, ID 0.4', 0 28" Long
Bead — FerrHe Bead Ferroxcube #68-590-86/38
Quality Semi-Conductors