NXP BB181 DATA SHEET
BB181
VHF variable capacitance diode
Rev. 03 — 16 February 2009 Product data sheet
1. Product profile
1.1 General description
The BB181 is a variable capacitance diode, fabricated in planar technology and
encapsulated in the SOD523 (SC-79) ultra small plastic SMD package.
1.2 Features
n Excellent linearity
n Ultra small plastic SMD package
n C
1.3 Applications
n Electronic tuning in satellite tuners
n Tunable coupling
n Voltage Controlled Oscillators (VCO)
d(28V)
: 1 pF; C
d(0V5)
to C
d(28V)
ratio : 14
2. Pinning information
Table 1. Pinning
Pin Description Simplified outline Graphic symbol
1 cathode
2 anode
[1] The marking bar indicates the cathode.
3. Ordering information
Table 2. Ordering information
Type number Package
BB181 SC-79 plastic surface mounted package; 2 leads SOD523
[1]
21
sym008
Name Description Version
NXP Semiconductors
4. Marking
Table 3. Marking codes
Type number Marking code
BB181 N
5. Limiting values
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol Parameter Conditions Min Max Unit
V
R
I
F
T
stg
T
j
BB181
VHF variable capacitance diode
reverse voltage - 30 V
forward current - 20 mA
storage temperature −55 +150 °C
junction temperature −55 +150 °C
6. Characteristics
Table 5. Characteristics
Tj = 25°C unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
I
R
r
s
C
d
C
d(0V5)/Cd(28V)
reverse current see Figure 2
=30V - - 10 nA
V
R
=30V; Tj=85°C - - 200 nA
V
R
diode series resistance f = 470 MHz at Cd=9pF - - 3 Ω
diode capacitance f = 1 MHz; see Figure 1 and
Figure 3
= 0.5 V 8 - 17 pF
V
R
= 28 V 0.7 - 1.055 pF
V
R
diode capacitance ratio (0.5 V to 28 V) f = 1 MHz 12 - 16
BB181_3 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 03 — 16 February 2009 2 of 6
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