Page 1
®
FEATURES AND BENEFITS
High capacitance ratio
n
Tuned for 900 Mhz band in mobile phone
n
Surface mount device
n
DESCRIPTION
The STDV901J is a variable capacitance diode in
SOD-323 package. This diode is intended to be
used in mobile phone application to control the
VCO frequency.
SOD-323
STVD901J
VARICAP
47
A
K
ABSOLUTE RATINGS (limiting values)
Symbol Parameter Value Unit
V
I
T
stg
T
T
Continuous reverse voltage 6 V
R
Continuous forward current 20 mA
F
Storage temperature range - 65 to +150 °C
Maximum junction temperature 150 °C
j
Maximum temperature for soldering 260 °C
L
January 2003 - Ed: 2
1/4
Page 2
STVD901J
STATIC ELECTRICAL CHARACTERISTICS (Tj = 25°C otherwise specified)
Symbol Parameter Tests Conditions Min. Typ. Max. Unit
I
R
Continuous reverse current VR=6V 10 nA
THERMAL RESISTANCE
Symbol Parameter Value Unit
R
th (j-a)
Junction to ambient 500 °C/W
ELECTRICAL CHARACTERISTICS
Symbol Parameter Tests Conditions Min. Typ. Max. Unit
C
t
r
f
L
s
Cd (0.25 V)
Diode capacitance VR= 0.25 V f = 1 MHz 3.6 4 4.4 pF
Diode series resistance VR= 1V f = 100 MHz 0.5 Ohm
Series inductance 1.5 nH
Capacitance ratio f = 1 MHz 2
/ Cd (2.7 V)
Fig. 1: Reverse leakage current versus reverse
voltage applied (typical values).
Fig. 2: Relative variation of reverse leakage current versus junction temperature (typical values).
I (µA)
R
1.E+01
Tj=125°C
1.E+00
1.E-01
1.E-02
V (V)
1.E-03
0.0 2.0 4.0 6.0 8.0 10.0
R
Tj=100°C
Tj=75°C
Tj=25°C
2/4
I [T ] / I [T =25°C)
Rj Rj
1.E+04
1.E+03
1.E+02
1.E+01
1.E+00
V =6V
R
T (°C)
j
25 50 75 100 125
Page 3
STVD901J
Fig. 3: Junction capacitance versus reverse
voltage applied (typical values).
C(pF)
6.0
5.0
4.0
3.0
2.0
1.0
V (V)
0.0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
R
F=1MHz
V =30mV
OSC RMS
T=25°C
j
Fig. 5: Serie resistance versus reverse voltage applied (typical values).
Rs( )Ω
10
F=100MHz
V =100mV
OSC RMS
T=25°C
j
Fig. 4: Relative variation of junction capacitance
versus junction temperature (typical values).
C[T ] / C [T =25°C]
jj
1.10
1.08
1.06
1.04
1.02
1.00
0.98
0.96
0.94
0.92
F=1MHz
V =30mV
OSC RMS
V =2.7V
R
V =0.25V
R
V =0V
R
T (°C)
j
-40 -20 0 20 40 60 80 100 120 140
Fig. 6: Thermal resistancejunctionto ambient versuscopper surface under each lead (printed circuit
board, epoxy FR4, Cu=35µm).
R (°C/W)
th(j-a)
600
550
500
1
V (V)
0
0.1 1.0 10.0
R
Fig. 7: PSpice parameters.
Diode parameters
Parameters Value Unit
Is 1.892e-8 A
N 1.256
Rs 0.62 Ω
Isr 8.090e-10 A
Cjo 5.178e-12 F
M 0.638
450
400
350
300
0 5 10 15 20 25 30 35 40 45 50
S(mm )
2
Ls = 1.5nH *
Vj 0.487 V
All others available parameters are set to default.
* Ls depends on package; this value is for SOD-323.
3/4
Page 4
STVD901J
PACKAGE MECHANICAL DATA
SOD-323
H
b
A1
REF.
Millimeters Inches
Min. Max. Min. Max.
DIMENSIONS
E
A 1.17 0.046
A1 0 0.1 0 0.004
D
A
b 0.25 0.44 0.01 0.017
c 0.1 0.25 0.004 0.01
c
Q1
D 1.52 1.8 0.06 0.071
E 1.11 1.45 0.044 0.057
H 2.3 2.7 0.09 0.106
L
L 0.1 0.46 0.004 0.02
Q1 0.1 0.41 0.004 0.016
MARKING
Type Marking Package Weight Base qty Delivery mode
STVD901J 47 SOD-323 0.005g 3000 Tape& reel
Informationfurnishedis believed to be accurate and reliable. However, STMicroelectronicsassumesnoresponsibility for the consequences of
useof such information nor for any infringementofpatents or other rights of third partieswhichmay result from its use. Nolicenseis granted by
implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to
change without notice. This publication supersedes and replaces all information previously supplied.
STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written
approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics
© 2003 STMicroelectronics - Printed in Italy - All rights reserved.
STMicroelectronics GROUP OF COMPANIES
Australia - Brazil - Canada - China - Finland - France - Germany
Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore
Spain - Sweden - Switzerland - United Kingdom - United States.
http://www.st.com
4/4
Loading...