Siemens BB545 Datasheet
BB 545
Silicon Tuning Diode
Preliminary data
• For tuning UHF and VHF TV Tuners
• Large capacitance ratio, low series resistance
Type Marking Ordering Code Pin Configuration Package
BB 545 white U Q62702-B583 1 = K 2 = A SOD-323
Maximum Ratings
Parameter Symbol Values Unit
Diode reverse voltage
Forward current
Operating temperature range
Storage temperature
V
I
T
T
F
R
op
stg
30 V
20 mA
- 55 ... + 150 °C
- 55 ... + 150
Thermal Resistance
Junction ambient
1) Package mounted on epoxy pcb 40mm x 40mmm x 1.5mm / 0.5cm2 Cu
1)
R
thJA
≤
450 K/W
Semiconductor Group 1 Jan-31-1997
BB 545
Electrical Characteristics at
T
=25°C, unless otherwise specified
A
Parameter Symbol Values Unit
min. typ. max.
DC characteristics
Reverse current
V
= 30 V,
R
V
= 30 V,
R
T
= 25 °C
A
T
= 85 °C
A
I
R
-
-
-
-
10
200
nA
AC characteristics
Diode capacitance
V
= 1 V, f = 1 MHz
R
V
= 2 V, f = 1 MHz
R
V
= 25 V, f = 1 MHz
R
V
= 28 V, f = 1 MHz
R
Capacitance ratio
V
= 2 V,
R
V
= 25 V, f = 1 MHz
R
C
C
T
T2
pF
18.5
13.2
1.85
1.8
/
C
T25
20
14.8
2.07
2
21.5
16.4
2.28
2.2
-
6.3 7.2 8.1
Capacitance ratio
V
= 1 V,
R
V
= 28 V, f = 1 MHz
R
Capacitance matching
V
= 1 ... 28 V, f = 1 MHz
R
Series resistance
V
= 3 V, f = 470 MHz
R
Series inductance
1)
C
∆
r
L
/
C
T1
T28
9 10 11
C
/
C
T
T
%
- - 2.5
s
Ω
- 0.6 -
s
- 2 - nH
Semiconductor Group 2 Jan-31-1997
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