LRC BB133 Datasheet
VHF V ariable Capacitance
LESHAN RADIO COMPANY, LTD.
Diode
FEATURES
· Excellent linearity
· Excellent matching to 0.7% DMA
· Very small plastic SMD package
· C28: 2.5 pF; ratio: 16.
· Low series resistance.
APPLICATIONS
· Electronic tuning in VHF television
tuners, band B up to 460 MHz
· VCO.
1
CATHODE
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL PARAMETER MIN. MAX. UNIT
V
R
I
F
T
stg
T
j
continuous reverse voltage – 30 V
continuous forward current – 20 mA
storage temperature –55 +150 °C
operating junction temperature –55 +125 °C
DESCRIPTION
The BB133 is a variable capacitance
diode fabricated in planar technology, and
encapsulated in the SOD323 very small
plastic SMD package.
The excellent matching performance is
achieved by gliding matching and a direct
matching assembly procedure. The unmatched type, BB150 has the same
specification.
2
ANODE
BB133
1
2
SOD– 323
MARKING DIAGRAM
P3
ELECTRICAL CHARACTERISTICS
j = 25 °C unless otherwise specified.
T
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
R reverse current VR = 30 V; see Fig.2 – 10 nA
I
R = 30 V; Tj = 85 °C; see Fig.2 – 200 nA
V
s diode series resistance f = 100 MHz; note 1 – 0.9 Ω
r
d diode capacitance VR = 0.5 V; f = 1 MHz; see Figs 1 and 3 38 46 pF
C
R = 28 V;f = 1 MHz; see Figs 1 and 3 2.2 2.6 pF
V
d( 0.5V ) capacitance ratio f = 1 MHz 14 21
C
d (28V )
C
capacitance matching VR = 0.5 to 28 V; in a sequence of 4 diodes – 0.7 %
d (gliding)
∆C
d VR= 0.5 to 28 V; in a sequence of 15 diodes – 2 %
C
(gliding)
Note
R is the value at which Cd = 30 pF.
1. V
BB133–1/2
LESHAN RADIO COMPANY, LTD.
f = 1 MHz; Tj = 25 °C.
Fig.1 Diode capacitance as a function of reverse voltage; typical values.
BB133
Tj °C.
Fig.2 Reverse current as a function of junction
temperature; maximum values.
Tj = 0 to 85 °C.
V
(V).
R
Fig.3 Temperature coefficient of diode
capacitance as a function of
reverse voltage; typical values.
BB133–2/2
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