©2003 Fairchild Semiconductor Corporation Rev. A, September 2003
BF240
Absolute Maximum Ratings* Ta=25°C unless otherwise noted
* These ratings are limiting values above which the serviceability of any semiconductor device may be impaired.
NOTES:
1) These ratings are based on a maximum junction temperature of 150 degrees C.
2) These are steady state limits. The factory should be consulted on applications involving pulsed or low duty cycle operations
Electrical Characteristics Ta=25°C unless otherwise noted
* Pulse Test: Pulse Width ≤ 300µs, Duty Cycle ≤ 2.0%
Thermal Charac teris tics TA=25°C unless otherwise noted
Symbol Parameter Value Units
VCEO Collector-Emitter Voltage 40 V
VCBO Collector-Base Voltage 40 V
VEBO Emitter-Base Voltage 4.0 V
ICCollector Current - Continuous 50 mA
TJ, TSTG Operating and Storage Junction Temperature Range - 55 ~ 150 °C
Symbol Parameter Test Condition Min. Max. Units
Off Characteristics
V(BR)CEO Collector-Emitter Br eakdown Voltage * IC = 1.0mA, IB = 0 40 V
V(BR)CBO Co llector-B ase Brea kdownVoltage IC = 100µA, IE = 0 40 V
V(BR)EBO E mitter- Base Br eakdown Voltage IE = 10µA, IC = 0 4.0 V
ICBO Collector Cut-off Current VCB = 20V, IE = 0 100 nA
On Characteristics
hFE DC Current Gain IC = 1mA, VCE = 10V 65 225
VCE(sat) Collector-Emit ter Saturati on Vo ltage IC = 1mA, IB = 0.1mA 0.65 V
VBE(sat) Base-Emitter Saturat ion Voltage IC = 1mA, IB = 0.1mA 0.74 V
Small Signal Characteristics
fTCurrent gain Bandwidth Product IC = 7.0mA, VCE = 10V,
f = 100MHz 1100 MHz
Cre Common-Emitter Ruerse
Transfer Capacitance VCB = 10V, IE = 0, f = 1.0MHz 0.34 pF
Symbol Parameter Max. Units
PDTotal Device Dissipation
Derate above 25°C350
2.8 mW
mW/°C
RθJC Thermal Resistance, Junction to Case 125 °C/W
RθJA Thermal Resistance, Junction to Ambient 357 °C/W
BF240
NPN RF Transistor
TO-92
1. Collector 2. Emitter 3. Base
1
0.46 ±0.10
1.27TYP
(R2.29)
3.86MAX
[1.27 ±0.20]1.27TYP
[1.27 ±0.20]
3.60 ±0.20
14.47 ±0.40
1.02 ±0.10
(0.25) 4.58 ±0.20
4.58 +0.25
–0.15
0.38 +0.10
–0.05
0.38 +0.10
–0.05
TO-92
Package Dimensions
BF240
Dimensions in Millimeters
©2003 Fairchild Semiconductor Corporation Rev. A, September 2003
©2003 Fairchild Semiconductor Corporation Rev. I5
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