Data Sheet

BB179LX
UHF variable capacitance diode
Rev. 01 — 13 April 2006
Preliminary data sheet
1. Product profile
1.1 General description
The BB179LX is a planar technology variable capacitance diode in a SOD882T ultra small
leadless plastic SMD package. The excellent matching performance is achieved by gliding
matching and a Direct Matching Assembly (DMA) procedure.
1.2 Features
n
n
n
n
n
Excellent linearity
Excellent matching to 2 % DMA
Ultra small leadless SMD package
Cd(28V): 2.1 pF; Cd(1V) to Cd(28V) ratio typical 9
Low series resistance
1.3 Applications
n Voltage Controlled Oscillators (VCO)
n Electronic tuning in VHF television tuners
2. Pinning information
Table 1.
Pin
Discrete pinning
Description
1
cathode
2
anode
Simplified outline
1
2
Transparent
top view
[1]
Symbol
[1]
sym008
The marking bar indicates the cathode.
3. Ordering information
Table 2.
Ordering information
Type number Package
BB179LX
Name
Description
Version
-
leadless ultra small plastic package; 2 terminals;
body 1.0 × 0.6 × 0.4 mm
SOD882T
BB179LX
Philips Semiconductors
UHF variable capacitance diode
4. Marking
Table 3.
Marking
Type number
Marking code
BB179LX
L4
5. Limiting values
Table 4.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
Parameter
Min
Max
Unit
VR
reverse voltage
Conditions
-
30
V
IF
forward current
-
20
mA
Tstg
storage temperature
−55
+150
°C
Tj
junction temperature
−55
+125
°C
6. Characteristics
Table 5.
Characteristics
Tj = 25 °C unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
IR
reverse current
see Figure 3
VR = 30 V
-
-
10
nA
VR = 30 V; Tj = 85 °C
-
-
200
nA
-
0.65
-
Ω
rs
diode series resistance
f = 470 MHz; Cd = 30 pF; see Figure 2
Cd
diode capacitance
see Figure 1 and Figure 4; f = 1 MHz;
VR = 1 V
18.2
-
21.3
pF
VR = 28 V
1.95
2.1
2.22
pF
C d ( 1V )
---------------C d ( 2V )
diode capacitance ratio
f = 1 MHz
-
1.27
-
C d ( 1V )
------------------C d ( 28V )
diode capacitance ratio
f = 1 MHz
8.45
9
10.9
C d ( 25V )
------------------C d ( 28V )
diode capacitance ratio
f = 1 MHz
-
1.05
-
diode capacitance
matching
VR = 1 V to 28 V; in sequence of 5
diodes (gliding)
-
-
2
∆C d
---------Cd
BB179LX_1
Preliminary data sheet
%
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 13 April 2006
2 of 7
BB179LX
Philips Semiconductors
UHF variable capacitance diode
001aae543
30
001aae544
0.8
rs
(Ω)
Cd
(pF)
0.6
20
0.4
10
0.2
0
10−1
1
102
10
0
10−1
1
102
10
VR (V)
VR (V)
f = 1 MHz; Tj = 25 °C.
f = 470 MHz; Tj = 25 °C.
Fig 1. Diode capacitance as a function of reverse
voltage; typical values
001aae541
103
IR
(nA)
Fig 2. Diode serial resistance as a function of reverse
voltage; typical values
001aae542
10−2
TCCd
(K−1)
102
10−3
10
10−4
1
0
20
40
60
80
100
10−5
10−1
1
Tj (°C)
102
10
VR (V)
Tj = 25 °C to 85 °C.
Fig 3. Reverse current as function of junction
temperature; maximum values
Fig 4. Temperature coefficient of diode capacitance
as a function of reverse voltage; typical values
BB179LX_1
Preliminary data sheet
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 13 April 2006
3 of 7
BB179LX
Philips Semiconductors
UHF variable capacitance diode
7. Package outline
Leadless ultra small plastic package; 2 terminals; body 1 x 0.6 x 0.4 mm
SOD882T
(2×)
L1 (2×)
w
1
2
M
A
b (2×)
(2×)
w
M
B
e1
A
A1
y
A
E
D
(1)
B
0
UNIT
A
mm
0.40
0.36
0.04
1 mm
scale
DIMENSIONS (mm are the original dimensions)
A1
max
0.5
b
D
E
e1
L1
w
y
0.55
0.45
0.65
0.55
1.05
0.95
0.65
0.30
0.22
0.1
0.03
Note
1. The marking bar indicates the cathode
OUTLINE
VERSION
REFERENCES
IEC
JEDEC
JEITA
EUROPEAN
PROJECTION
ISSUE DATE
04-12-14
06-04-12
SOD882T
Fig 5. Package outline SOD882T
BB179LX_1
Preliminary data sheet
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 13 April 2006
4 of 7
BB179LX
Philips Semiconductors
UHF variable capacitance diode
8. Revision history
Table 6.
Revision history
Document ID
Release date
Data sheet status
Change notice
Supersedes
BB179LX_1
20060413
Preliminary data sheet
-
-
BB179LX_1
Preliminary data sheet
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 13 April 2006
5 of 7
BB179LX
Philips Semiconductors
UHF variable capacitance diode
9. Legal information
9.1
Data sheet status
Document status[1][2]
Product status[3]
Definition
Objective [short] data sheet
Development
This document contains data from the objective specification for product development.
Preliminary [short] data sheet
Qualification
This document contains data from the preliminary specification.
Product [short] data sheet
Production
This document contains the product specification.
[1]
Please consult the most recently issued document before initiating or completing a design.
[2]
The term ‘short data sheet’ is explained in section “Definitions”.
[3]
The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status
information is available on the Internet at URL http://www.semiconductors.philips.com.
9.2
Definitions
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. Philips Semiconductors does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liability for the consequences of
use of such information.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is intended
for quick reference only and should not be relied upon to contain detailed and
full information. For detailed and full information see the relevant full data
sheet, which is available on request via the local Philips Semiconductors
sales office. In case of any inconsistency or conflict with the short data sheet,
the full data sheet shall prevail.
9.3
Disclaimers
General — Information in this document is believed to be accurate and
reliable. However, Philips Semiconductors does not give any representations
or warranties, expressed or implied, as to the accuracy or completeness of
such information and shall have no liability for the consequences of use of
such information.
Right to make changes — Philips Semiconductors reserves the right to
make changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all information supplied prior
to the publication hereof.
Suitability for use — Philips Semiconductors products are not designed,
authorized or warranted to be suitable for use in medical, military, aircraft,
space or life support equipment, nor in applications where failure or
malfunction of a Philips Semiconductors product can reasonably be expected
to result in personal injury, death or severe property or environmental
damage. Philips Semiconductors accepts no liability for inclusion and/or use
of Philips Semiconductors products in such equipment or applications and
therefore such inclusion and/or use is for the customer’s own risk.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. Philips Semiconductors makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) may cause permanent
damage to the device. Limiting values are stress ratings only and operation of
the device at these or any other conditions above those given in the
Characteristics sections of this document is not implied. Exposure to limiting
values for extended periods may affect device reliability.
Terms and conditions of sale — Philips Semiconductors products are sold
subject to the general terms and conditions of commercial sale, as published
at http://www.semiconductors.philips.com/profile/terms, including those
pertaining to warranty, intellectual property rights infringement and limitation
of liability, unless explicitly otherwise agreed to in writing by Philips
Semiconductors. In case of any inconsistency or conflict between information
in this document and such terms and conditions, the latter will prevail.
No offer to sell or license — Nothing in this document may be interpreted
or construed as an offer to sell products that is open for acceptance or the
grant, conveyance or implication of any license under any copyrights, patents
or other industrial or intellectual property rights.
9.4
Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
10. Contact information
For additional information, please visit: http://www.semiconductors.philips.com
For sales office addresses, send an email to: [email protected]
BB179LX_1
Preliminary data sheet
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Rev. 01 — 13 April 2006
6 of 7
BB179LX
Philips Semiconductors
UHF variable capacitance diode
11. Contents
1
1.1
1.2
1.3
2
3
4
5
6
7
8
9
9.1
9.2
9.3
9.4
10
11
Product profile . . . . . . . . . . . . . . . . . . . . . . . . . .
General description. . . . . . . . . . . . . . . . . . . . . .
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pinning information . . . . . . . . . . . . . . . . . . . . . .
Ordering information . . . . . . . . . . . . . . . . . . . . .
Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . .
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . .
Package outline . . . . . . . . . . . . . . . . . . . . . . . . .
Revision history . . . . . . . . . . . . . . . . . . . . . . . . .
Legal information. . . . . . . . . . . . . . . . . . . . . . . .
Data sheet status . . . . . . . . . . . . . . . . . . . . . . .
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contact information. . . . . . . . . . . . . . . . . . . . . .
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
1
1
1
1
1
2
2
2
4
5
6
6
6
6
6
6
7
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© Koninklijke Philips Electronics N.V. 2006.
All rights reserved.
For more information, please visit: http://www.semiconductors.philips.com.
For sales office addresses, email to: [email protected]
Date of release: 13 April 2006
Document identifier: BB179LX_1
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