LRC BB142 Datasheet
LESHAN RADIO COMPANY, LTD.
Low-voltage variable capacitance diode
BB 142
FEATURES
· Excellent linearity
· Ultra small plastic SMD package
· C4: 2.05 pF; ratio: 2.2
· Low series resistance.
APPLICATIONS
· Voltage controlled oscillators (VCO).
1
CATHODE
DESCRIPTION
The BB142 is a variable capacitance
diode, fabricated in planar
technology, and encapsulated in the
SOD523 (SC-79) ultra small plastic
SMD package.
2
ANODE
2
SOD523 SC-79
MARKING CODE:K
1
LIMITING V ALUES 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
ELECTRICAL CHARACTERISTICS T
continuous reverse voltage – 6 V
peak reverse voltage in series with a 10 kΩ resistor – 8 V
continuous forward current – 20 mA
storage temperature –55 +150 °C
operating junction temperature –55 +150 °C
=25°C unless otherwise specified.
j
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
I
r
C
C
C
R
s
d
d ( 1V)
d ( 4V)
reverse current V R = 6 V; see Fig.2 – – 10 nA
=6 V; T j =85°C; see Fig.2 – – 200 nA
V
R
diode series resistance f = 470 MHz; V R =1 V – 0.5 – Ω
diode capacitance V R = 1 V; f = 1 MHz;
see Figs 1 and 3
= 4 V; f = 1 MHz;
V
R
see Figs 1 and 3
4 4.6 4.9 pF
1.85 2.05 2.35 pF
capacitance ratio f = 1 MHz 2 2.2 –
K
1
2
BB142–1/2
10
( pF )
C d
LESHAN RADIO COMPANY, LTD.
BB 142
8
6
4
2
0
–1
10
110
V R ( V )
Fig.1 Diode capacitance as a function of reverse voltage; typical values.
3
10
(nA)
R
2
I
10
10
0 50 100
T j ( °C )
Fig.2 Reverse current as a function of junction
temperature; maximum values.
-3
10
)
-1
( K
d
TC
-4
10
–1
10
Fig.3 Temperature coefficient of diode capacitance as a function of
reverse voltage; typical values.
110
V R ( V )
BB142–2/2
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