LESHAN RADIO COMPANY, LTD.
BB181–1/2
VHF variable capacitance diode
SOD523 SC-79
1
2
BB 181
2
ANODE
1
CATHODE
FEATURES
· Excellent linearity
· Ultra small plastic SMD package
· C28: 1 pF; ratio: 14.
APPLICATIONS
· Electronic tuning in satellite tuners
· Tuneable coupling
· Voltage controlled oscillators (VCO).
DESCRIPTION
The BB181 is a variable capacitance diode, fabricated in planar technology and
encapsulated in the SOD523 (SC-79) ultra small plastic SMD package.
LIMITING VALUESIn accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL PARAMETER MIN. MAX. UNIT
V R continuous reverse voltage – 30 V
I
F
continuous forward current – 20 mA
T stg storage temperature – 55 +150 °C
T
j
operating junction temperature – 55 +150 °C
ELECTRICAL CHARACTERISTICS T
j
=25°C unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
I
R
reverse current V
R
= 30 V; see Fig.2 – 10 nA
V R =30 V; Tj =85°C; see Fig.2 – 200 nA
r
s
diode series resistance f = 470 MHz; note 1 – 3 Ω
C d diode capacitance V R = 0.5 V; f = 1 MHz; see Figs 1 and 3 8 17 pF
V
R
= 28 V; f = 1 MHz; see Figs 1 and 3 0.7 1.055 pF
C d(0.5V)
C
d(28V )
capacitance ratio f = 1 MHz 12 16
Note
1. V
R
is the value at which Cd = 9 pF.
MARKING CODE:N
N
1
2