BCR400W Datasheet, PDF (1/7 Pages) Siemens Semiconductor Group – Active Bias Controller (Supplies stable bias current even at low battery voltage and extreme ambient temperature variation)

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
BCR 400W
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
Maximum Ratings
(E_NPN,B_NPN,C_NPN are electrodes of a stabilized NPN transistor)
Parameter
Symbol
Values
Unit
Supply voltage
Control current
Control voltage
Reverse voltage between all terminals
Total power dissipation, T_S = 117°C
Junction temperature
Storage temperature
V_S
I_Contr.
V_Contr.
V_R
P_tot
T_j
T_stg
18
V
10
mA
16
V
0.5
330
mW
150
°C
- 65 ... + 150
Thermal Resistance
Junction ambient ¹⁾
Junction - soldering point
R_thJA
R_thJS
≤ 170
K/W
≤ 100
1) Package mounted on pcb 40mm x 40mm x 1.5mm / 6cm² Cu
Semiconductor Group
1
Nov-27-1996