Philips BB187 Datasheet
DISCRETE SEMICONDUCTORS
DATA SH EET
M3D319
BB187
VHF variable capacitance diode
Product specification
Supersedes data of 1999 Sep 15
1999 Oct 19
Philips Semiconductors Product specification
VHF variable capacitance diode BB187
FEATURES
• High linearity
• Excellent matching to 2% DMA
• Ultra small plastic SMD package
• C25: 2.75 pF; ratio: 12
• Low series resistance.
APPLICATIONS
• Electronic tuning in VHF television
tuners
• Voltage controlled oscillators
DESCRIPTION
The BB187 is a planar technology
variable capacitance diode in a
SOD523 (SC-79) package. The
excellent matching performance is
achieved by gliding matching and a
direct matching assemblyprocedure.
PINNING
PIN DESCRIPTION
1 cathode
2 anode
handbook, 2 columns
12
X
MBK441
Marking code: X.
Orientation of marking code as shown.
Cathode side indicated by a bar.
Fig.1 Simplified outline
(SOD523; SC-79) and symbol.
(VCO).
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 − 32 V
peak reverse voltage in series with a 10 kΩ resistor − 35 V
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
d2V()
------------------C
d25V()
C
∆
d
---------C
d
reverse current VR= 30 V; see Fig.3 −−10 nA
V
= 30 V; Tj=85°C; see Fig.3 −−200 nA
R
diode series resistance f = 470 MHz; VR=5V −−0.75 Ω
diode capacitance VR= 2 V; f = 1 MHz; see Figs 2 and 4 29.3 − 34.2 pF
= 25 V; f = 1 MHz; see Figs 2 and 4 2.57 − 2.92 pF
V
R
capacitance ratio f = 1 MHz 11 −−
capacitance matching VR= 2 to 25 V; in a sequence of 15
−−2%
diodes (gliding)
1999 Oct 19 2
Philips Semiconductors Product specification
VHF variable capacitance diode BB187
GRAPHICAL DATA
50
handbook, full pagewidth
C
d
(pF)
40
30
20
10
0
−1
10
f = 1 MHz; Tj=25°C.
1
10 10
VR (V)
Fig.2 Diode capacitance as a function of reverse voltage; typical values.
MCD781
2
3
10
handbook, halfpage
I
R
(nA)
2
10
10
50
o
T ( C)
j
Fig.3 Reversecurrentasafunctionofjunction
temperature; maximum values.
MLC816
V (V)
R
MLC815
2
3
10
handbook, halfpage
TC
d
(K−1)
4
10
5
10
1
1000
10
11010
Fig.4 Temperature coefficient of diode
capacitance as a function of
reverse voltage; typical values.
1999 Oct 19 3
Loading...