Page 1
查询BB157供应商
DISCRETE SEMICONDUCTORS
DATA SH EET
ook, halfpage
M3D049
BB157
VHF variable capacitance diode
Product specification
Supersedes data of 2002 Feb 06
2002 Mar 05
Page 2
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
Page 3
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
Page 4
Philips Semiconductors Product specification
VHF variable capacitance diode BB157
50
handbook, full pagewidth
C
d
(pF)
40
30
20
10
0
−1
10
f =1 MHz; Tj=25°C.
1
10
VR (V)
Fig.2 Diode capacitance as a function of reverse voltage; typical values.
MGU594
2
10
o
T ( C)
j
MLC816
1000
3
10
handbook, halfpage
I
R
(nA)
2
10
10
50
Fig.3 Reverse current as a function of junction
temperature; maximum values.
2002 Mar 05 4
−3
10
handbook, halfpage
TC
d
−1
(K
)
−4
10
−5
10
−1
10
110
Fig.4 Temperature coefficient of diode
capacitance as a function of reverse
voltage; typical values.
VR (V)
MGU595
2
10
Page 5
Philips Semiconductors Product specification
VHF variable capacitance diode BB157
PACKAGE OUTLINE
Plastic surface mounted package; 2 leads
A
A
1
c
L
p
H
E
v M
Q
A
SOD323
D
12
b
E
p
(1)
0 1 2 mm
DIMENSIONS (mm are the original dimensions)
A
UNIT b
1.1
mm
0.8
Note
1. The marking bar indicates the cathode.
OUTLINE
VERSION
SOD323 SC-76
1
A
max.
0.40
+ 0.05
0.25
− 0.05
cD
p
0.25
1.8
0.10
1.6
IEC JEDEC EIAJ
H
E
1.35
2.7
1.15
2.3
REFERENCES
E
L
0.45
0.15
p
A
scale
Qv
0.25
0.15
0.2
EUROPEAN
PROJECTION
ISSUE DATE
98-09-14
99-09-13
2002 Mar 05 5
Page 6
Philips Semiconductors Product specification
VHF variable capacitance diode BB157
DATA SHEET STATUS
PRODUCT
DATA SHEET STATUS
Objective data Development This data sheet contains data from the objective specification for product
Preliminary data Qualification This data sheet contains data from the preliminary specification.
Product data Production This data sheet contains data from the product specification. Philips
(1)
STATUS
(2)
DEFINITIONS
development. Philips Semiconductors reserves the right to change the
specification in any manner without notice.
Supplementary data will be published at a later date. Philips
Semiconductors reserves the right to change the specification without
notice, in order to improve the design and supply the best possible
product.
Semiconductors reserves the right to make changes at any time in order
to improve the design, manufacturing and supply. Changes will be
communicated according to the Customer Product/Process Change
Notification (CPCN) procedure SNW-SQ-650A.
Notes
1. Please consult the most recently issued data sheet before initiating or completing a design.
2. The product status of the device(s) described in this data sheet may have changed since this data sheet was
published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com.
DEFINITIONS
Short-form specification The data in a short-form
specification is extracted from a full data sheet with the
same type number and title. For detailed information see
the relevant data sheet or data handbook.
Limiting valuesdefinition Limitingvalues givenare in
accordance with the Absolute Maximum Rating System
(IEC 60134). Stress above one or more of the limiting
values may cause permanent damage to the device.
These are stress ratings only and operation of the device
atthese orat anyother conditionsabovethose givenin the
Characteristics sectionsof the specification isnot implied.
Exposure to limiting values for extended periods may
affect device reliability.
Application information Applications that are
described herein for any of these products are for
illustrative purposes only. Philips Semiconductors make
norepresentation orwarrantythat suchapplications willbe
suitable for the specified use without further testing or
modification.
DISCLAIMERS
Life support applications These products are not
designed for use in life support appliances, devices, or
systems where malfunction of these products can
reasonably beexpected toresult inpersonal injury.Philips
Semiconductorscustomers usingorselling theseproducts
for use in such applications do so at their own risk and
agree to fully indemnify Philips Semiconductors for any
damages resulting from such application.
Right to make changes Philips Semiconductors
reserves the right to make changes, without notice, in the
products, including circuits, standard cells, and/or
software, described or contained herein in order to
improve design and/or performance. Philips
Semiconductors assumes no responsibility or liability for
theuse ofany oftheseproducts, conveysno licenceortitle
under any patent, copyright, or mask work right to these
products,and makesno representationsor warrantiesthat
these products are free from patent, copyright, or mask
work right infringement, unless otherwise specified.
2002 Mar 05 6
Page 7
Philips Semiconductors Product specification
VHF variable capacitance diode BB157
NOTES
2002 Mar 05 7
Page 8
Philips Semiconductors – a w orldwide compan y
Contact information
For additional information please visit http://www.semiconductors.philips.com. Fax: +31 40 27 24825
For sales offices addresses send e-mail to: [email protected].
© Koninklijke Philips Electronics N.V. 2002
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
The information presented in this document doesnot formpart of any quotation or contract, is believed tobe accurateand reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
Printed in The Netherlands 613514/02/pp8 Date of release: 2002 Mar 05 Document order number: 9397 750 09413
SCA74
Loading...