Philips BB157 Technical data
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M3D049
BB157
VHF variable capacitance diode
Product specification
Supersedes data of 2002 Feb 06
2002 Mar 05
Philips Semiconductors Product specification
VHF variable capacitance diode BB157
FEATURES
• High linearity
• Excellent matching to 2% DMA
• Very small plastic SMD package
• C25: 2.75 pF; ratio: min. 11
• Low series resistance.
APPLICATIONS
• Electronic tuning in VHF television tuners
• Voltage controlled oscillators (VCO).
DESCRIPTION
The BB157 is a variable capacitance diode, fabricated in
planar technology and encapsulated in the SOD323
(SC-76) very small plastic SMD package. The excellent
matching performance is achieved by gliding matching
and a Direct Matching Assembly (DMA) procedure.
MARKING
TYPE NUMBER MARKING CODE
BB157 PG
PINNING
PIN DESCRIPTION
1 cathode
2 anode
handbook, 2 columns
12
MAM392
The marking bar indicates the cathode.
Fig.1 Simplified outline SOD323 (SC76) and
symbol.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134).
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
V
R
V
RM
I
F
T
stg
T
j
continuous reverse voltage − 30 V
peak reverse voltage in series with a 10 kΩ resistor − 35 V
continuous forward current − 20 mA
storage temperature −55 +150 °C
operating junction temperature −55 +150 °C
2002 Mar 05 2
Philips Semiconductors Product specification
VHF variable capacitance diode BB157
CHARACTERISTICS
Tj=25°C unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
I
R
r
s
C
d
C
d2V()
------------------C
d25V()
C
d1V()
------------------C
d28V()
C
∆
d
---------C
d
reverse current VR= 30 V; see Fig.3 −−10 nA
V
= 30 V; Tj=85°C; see Fig.3 −−200 nA
R
diode series resistance f = 470 MHz; VR=5V −−0.75 Ω
diode capacitance VR= 1 V; f = 1 MHz; see Figs 2 and 4 37.5 − 43.8 pF
V
= 2 V; f = 1 MHz; see Figs 2 and 4 29.3 − 34.2 pF
R
= 25 V; f = 1 MHz; see Figs 2 and 4 2.57 − 2.92 pF
V
R
V
= 28 V; f = 1 MHz; see Figs 2 and 4 2.42 − 2.76 pF
R
capacitance ratio f = 1 MHz 11 −−
capacitance ratio f = 1 MHz 14.85 −−
capacitance matching V
= 2 to 25 V; in a sequence of 15
R
−−2%
diodes (gliding)
2002 Mar 05 3
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