BF840 NXP Semiconductors, BF840 Datasheet - Page 3

• Manufacturer Part Number: BF840
• Description: Npn Medium Frequency Transistor
• Manufacturer: NXP Semiconductors

Philips Semiconductors
THERMAL CHARACTERISTICS
Note
1. Transistor mounted on an FR4 printed-circuit board.
CHARACTERISTICS
T
2004 Jan 13
R
I
I
h
V
C
f
j
CBO
EBO
T
SYMBOL
SYMBOL
FE
BE
th(j-a)
= 25 C unless otherwise specified.
re
NPN medium frequency transistor
thermal resistance from junction to ambient
collector cut-off current
emitter cut-off current
DC current gain
base-emitter voltage
feedback capacitance
transition frequency
PARAMETER
PARAMETER
I
I
I
I
I
I
E
C
C
C
C
C
= 0; V
= 0; V
= 1 mA; V
= 1 mA; V
= 0; V
= 1 mA; V
CB
EB
CB
= 20 V
= 4 V
= 10 V; f = 1 MHz
CONDITIONS
CE
CE
CE
= 10 V
= 10 V
= 10 V; f = 100 MHz
3
note 1
CONDITIONS
67
675
MIN.
VALUE
500
725
0.3
380
TYP.
Product specification
100
100
222
775
MAX.
BF840
UNIT
K/W
nA
nA
mV
pF
MHz
UNIT