Semiconductor Group 1 Nov-27-1996
BCR 400W
Active Bias Controller
Characteristics
• Supplies stable bias current even at low battery voltage
and extreme ambient temperature variation
• Low voltage drop of 0.7V
Application notes
• Stabilizing bias current of NPN transistors and FETs from
from less than 0.2mA up to more than 200mA
• Ideal supplement for SIEGET and other RF transistors
• also usable as current source up to 5mA
Type Marking Ordering Code Pin Configuration Package
BCR 400W W4s Q62702-C2481 1 GND/E
NPN
2 Contr/B
NPN
3 V
S
4 Rext/C
NPN
SOT-343
(E
NPN
,B
NPN
,C
NPN
are electrodes of a stabilized NPN transistor)
Maximum Ratings
Parameter Symbol Values Unit
Supply voltage V
S
18 V
Control current I
Contr.
10 mA
Control voltage V
Contr.
16 V
Reverse voltage between all terminals V
R
0.5
Total power dissipation, T
S
= 117°C P
tot
330 mW
Junction temperature T
j
150 °C
Storage temperature T
stg
- 65 ... + 150
Thermal Resistance
Junction ambient
1)
R
thJA
≤ 170 K/W
Junction - soldering point R
thJS
≤ 100
1) Package mounted on pcb 40mm x 40mm x 1.5mm / 6cm
2
Cu