ST448
ST448 is RF & MICROWAVE TRANSISTORS HF SSB APPLICATIONS manufactured by SGS Thomson.
DESCRIPTION
The SD1731 is a 50 V epitaxial silicon NPN planar transistor designed primarily for SSB munications. This device utilizes emitter ballasting for improved ruggedness and reliability. ABSOLUTE MAXIMUM RATINGS (T case = 25° C)
Symbol Parameter Value Un it
1. Collector 2. Emitter
3. Base 4. Emitter
VCBO VCEO VEBO IC PDISS TJ TSTG
Collector-Base Voltage Collector-Emitter Voltage Emitter-Base Voltage Device Current Power Dissipation (Theatsink ≤ 25°C) Junction Temperature Storage Temperature
110 55 4.0 20 257 +200
- 65 to +150
V V V A W °C °C
THERMAL DATA RTH(j-c) RTH(c-s)
S e pte m ber 6, 1 99 6
Junction-Case Thermal Resistance Case-Heatsink Thermal Resistance
0.48 0.2
°C/W °C/W
SD1731-14 (ST448)
ELECTRICAL SPECIFICATIONS STATIC (Tcase = 25°C)
S ym bo l Te s t C o n ditio n s Va lu e Min. Typ . Ma x. Un it
BVCBO BVCEO BVEBO ICEO ICES h FE
IC = 2 00 m A IC = 2 00 m A IE = 2 0 m A VC E = 30 V VC E = 55 V VC E = 6 V
IE = 0 m A IB = 0 m A IC = 0 m A IB = 0 m A VBE = 0V IC = 1 0 A
110 55 4.0
- - 5
- -
- -
- -
- -
- 5 10 20
V V V m A m A
- DYNAMIC (Theatsink = 25°C)
S ym bo l Te s t C o nd itio ns Va lu e Min. Typ. Ma x. Un it
POUT GP
- IMD- η c- COB
Note:
- f 1 f = 3 0 MHz P OUT = 250 W P E P P OUT = 250 W P E P P OUT = 250 W P E P f = 1 MHz =
30.00 MHz, f2
VCC = 50 V VCC = 50 V VCC = 50 V VCC = 50 V VCB = 5 0 V =
30.001 MHz
ICQ = 150 m A ICQ = 150 m A ICQ = 150 m A ICQ = 150 m A
250...
