1999 May 12 2
Philips Semiconductors Preliminary specification
Low-voltage variable capacitance diode BB143
FEATURES
• Excellent linearity
• Ultra small plastic SMD package
• C4: 2.25 pF; ratio: 2.35
• Low series resistance.
APPLICATIONS
• Voltage controlled oscillators (VCO).
DESCRIPTION
The BB143 is a variable capacitance diode, fabricated in
planar technology, and encapsulated in the
SOD523 (SC-79) ultra small plastic SMD package.
PINNING
PIN DESCRIPTION
1 cathode
2 anode
Fig.1 Simplified outline (SOD523; SC-79)
and symbol.
Marking code: L.
Orientation of marking code as shown.
Cathode side indicated by a bar.
handbook, halfpage
12
MBL026
L
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
ELECTRICAL CHARACTERISTICS
T
j
=25°C unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
V
R
continuous reverse voltage
−
6V
V
RM
peak reverse voltage in series with a 10 kΩ resistor
−
8V
I
F
continuous forward current −
20 mA
T
stg
storage temperature
−55
+150 °C
T
j
operating junction temperature
−55
+150 °C
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
I
R
reverse current V
R
= 6 V; see Fig.3 −−
10
nA
V
R
=6V; T
j
=85°C; see Fig.3 −−
200
nA
r
s
diode series resistance f = 470 MHz; V
R
=1V − 0.5 −Ω
C
d
diode capacitance V
R
= 1 V; f = 1 MHz;
see Figs 2 and 4
4.75 5.3 5.75 pF
V
R
= 4 V; f = 1 MHz;
see Figs 2 and 4
2.05 2.25 2.55 pF
capacitance ratio f = 1 MHz 2.1 2.35 −
C
d1V()
C
d4V()
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