Philips BB145 Datasheet
DISCRETE SEMICONDUCTORS
DATA SH EET
M3D319
BB145
VCO variable capacitance diode
Preliminary specification 1999 Sep 15
Philips Semiconductors Preliminary specification
VCO variable capacitance diode BB145
FEATURES
• Ultra small plastic SMD package
• C4: 3 pF; ratio: 2.1
• Low series resistance.
APPLICATIONS
• Voltage controlled oscillators
(VCO).
DESCRIPTION
The BB145 is a planar technology
variable capacitance diode in a
SOD523 (SC-79) package.
PINNING
PIN DESCRIPTION
1 cathode
2 anode
handbook, 2 columns
12
U
Marking code: U.
Orientation of marking code as shown.
Cathode side indicated by a bar.
MBK441
Fig.1 Simplified outline
(SOD523; SC-79) and symbol.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
V
R
V
RM
I
F
T
stg
T
j
continuous reverse voltage − 6V
peak reverse voltage in series with a 10 kΩ resistor − 8V
continuous forward current − 20 mA
storage temperature −55 +150 °C
operating junction temperature −55 +150 °C
ELECTRICAL CHARACTERISTICS
Tj=25°C unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
I
R
r
s
C
d
C
d1V()
---------------C
d4V()
reverse current VR= 6 V; see Fig.3 −−10 nA
V
=6V; Tj=85°C; see Fig.3 −−200 nA
R
diode series resistance f = 470 MHz; VR=1V −−0.6 Ω
diode capacitance VR= 1 V; f = 1 MHz; see Figs 2 and 4 6.4 − 7.4 pF
= 4 V; f = 1 MHz; see Figs 2 and 4 2.75 − 3.25 pF
V
R
capacitance ratio f = 1 MHz −
2
−
1999 Sep 15 2
Philips Semiconductors Preliminary specification
VCO variable capacitance diode BB145
GRAPHICAL DATA
10
handbook, full pagewidth
C
d
(pF)
8
6
4
2
0
−1
10
f =1 MHz; Tj=25°C.
1
VR (V)
Fig.2 Diode capacitance as a function of reverse voltage; typical values.
MCD782
10
3
10
handbook, halfpage
I
R
(nA)
2
10
10
50
o
T ( C)
j
Fig.3 Reversecurrent asa functionofjunction
temperature; maximum values.
MLC816
−3
10
handbook, halfpage
TC
d
−1
(K
)
−4
10
−1
1000
10
110
MGS352
VR (V)
Fig.4 Temperature coefficient of diode
capacitance as a function of
reverse voltage; typical values.
1999 Sep 15 3
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