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PTB 20237
150 Watts, 470鈥?60 MHz
UHF TV Power Transistor
Description
The 20237 is a class AB, NPN, common emitter UHF TV power
transistor intended for 28 Vdc operation from 470 to 860 MHz. Rated
at 150 watts minimum output power, it may be used for both CW and
PEP applications. Ion implantation, nitride surface passivation and gold
metallization ensure excellent device reliability. 100% lot traceability
is standard.
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470鈥?60 MHz, 28 Volts
Class AB Characteristics
50% Collector Efficiency at 150 Watts
Gold Metallization
Silicon Nitride Passivated
Typical Output Power vs. Input Power
200
Output Power (Watts)
175
150
125
100
75
50
25
0
0
4
8
12
16
20
24
202
37
LOT
COD
E
V
CC
= 28 V
I
CQ
= 0.800 A Total
f = 860 MHz
Input Power (Watts)
Package 20236
Maximum Ratings
Parameter
Collector-Emitter Voltage
Collector-Base Voltage
Emitter-Base Voltage (collector open)
Collector Current (continuous)
Total Device Dissipation at Tflange = 25擄C
Above 25擄C derate by
Storage Temperature Range
Thermal Resistance (Tflange = 70擄C)
T
STG
R
胃JC
Symbol
V
CER
V
CBO
V
EBO
I
C
P
D
Value
55
60
4
25
330
1.89
鈥?0 to +150
0.53
Unit
Vdc
Vdc
Vdc
Adc
Watts
W/擄C
擄C
擄C/W
1
9/28/98
1
2
3
4
