MRF857 MOTOROLA [Motorola, Inc], MRF857 Datasheet - Page 4

• Manufacturer Part Number: MRF857
• Description: NPN SILICON RF POWER TRANSISTOR
• Manufacturer: MOTOROLA [Motorola, Inc]

MRF857S
4
850
800
750
700
650
600
550
3.5
2.5
1.5
0.5
50
4
3
2
1
0
0
0
0
Figure 3. MRF857S Output Power & Power Gain
(This device is MTBF limited for V CE
2
0.05
4
6
Figure 5. MRF857S DC SOA
0.1
8
P in , INPUT POWER (WATTS)
versus Input Power
10 12 14 16 18 20 22 24 26 28
0.15
P out
G pe
V CE (Vdc)
0.2
14.5
13.5
12.5
15
14
13
12
830
0.25
840
V CC = 24 Vdc
I C = 300 mA
f = 870 MHz
Figure 2. Performance of MRF857S in
0.3
TYPICAL CHARACTERISTICS
850
T j = 175 C
T f = 50 C
20 Vdc.)
0.35
Broadband Circuit
860
f, FREQUENCY (MHz)
V CC = 24 Vdc
I C = 300 mA
P out = 2.1 W (CW)
0.4
G pe
16
15
14
13
12
11
10
9
8
870
VSWR
1.00E+08
1.00E+07
1.00E+06
1.00E+05
1.00E+04
1.00E+03
1.00E+02
880
1500
1000
500
0
0
100
890
9.80E+06
2
Figure 6. MRF857S MTBF Factor versus
120
4
900
2.01E+06
6
Figure 4. MRF857S DC SOA
140
T J , JUNCTION TEMPERATURE ( C)
910
Junction Temperature
8
4.82E+05
4
3.5
3
2.5
2
1.5
1
10 12 14 16 18 20 22 24 26 28
160
MOTOROLA RF DEVICE DATA
1.32E+05
V CE (Vdc)
180
4.03E+04
200
1.37E+04
2.02E+03
220
T j = 150 C
T f = 50 C
5.05E+03
240
8.67E+02
260