Characteristic
Value
Forward Current (I
F
)
20 mA
Power Dissipation (P
D
)
250 mW
Storage Temperature (T
ST
)
-55C to +150C
Operating Temperature (T
OP
)
-55C to +125C
Absolute Maximum Ratings
Skyworks Solutions, Inc. [781] 376-3000
Fax [781] 376-3100 Email sales@skyworksinc.com www.skyworksinc.com
1
Specifications subject to change without notice. 5/03A
Abrupt Junction Tuning Varactors
Features
High Q
Low Series Resistance for Low Phase
Noise
Multiple Packages: SOD-323 and SC-79
Designed for High Volume Commercial
Applications
SPICE Models are Available
SMV1493SMV1494
Description
The SMV1493 and SMV1494 silicon abrupt junction
varactor diodes are designed for use in VCOs requiring
tight capacitance tolerances. The low resistance of these
varactors makes them appropriate for high Q resonators
in wireless system VCOs to frequencies beyond 2.5 GHz.
Available through distribution.
For other packages or configurations,
please contact the factory.
Single
Single
SOD-323
SC-79
SMV1493-011
SMV1493-079
SMV1494-079
L
S
= 1.5 nH
L
S
= 0.7 nH
R
S
@ 1 V
Part
C
T
@ 1 V
C
T
@ 4 V
500 MHz
Number
(pF)
(pF)
(
)
Min.
Max.
Min.
Max.
Max.
SMV1493
17.4
20.0
10.0
12.1
0.50
SMV1494
36.3
41.7
20.7
25.3
0.45
Electrical Specifications at 25C
Reverse Voltage V
R
(I
R
= 10
A): 12 V
Reverse Current I
R
(V
R
= 10 V): 20 nA
Abrupt Junction Tuning Varactors
SMV1493SMV1494
2
Skyworks Solutions, Inc. [781] 376-3000
Fax [781] 376-3100 Email sales@skyworksinc.com www.skyworksinc.com
Specifications subject to change without notice. 5/03A
Part
C
JO
V
J
M
C
P
R
S
Number
(pF)
(V)
(pF)
(
)
SMV1493
29
0.63
0.47
0
0.50
SMV1494
58
0.63
0.47
0
0.45
Reverse Voltage (V)
Capacitance vs. Reverse Voltage
Capacitance (pF)
0
10
20
30
40
50
60
0
2
4
6
8
10
SMV1494
SMV1493
Typical Performance Data
Capacitance vs. Reverse Voltage
SPICE Model
SMV1493
SMV1494
V
R
(V)
C
T
(pF)
C
T
(pF)
0.0
28.7
57.8
0.2
25.6
51.5
0.4
23.3
46.9
0.6
21.5
43.4
0.8
20.1
40.5
1.0
19.0
38.4
1.2
17.9
36.3
1.4
17.0
34.6
1.6
16.2
33.0
1.8
15.5
31.6
2.0
15.0
30.6
2.2
14.4
29.5
2.4
13.9
28.5
2.6
13.5
27.6
2.8
13.1
26.7
3.0
12.7
26.1
3.2
12.4
25.3
3.4
12.0
24.7
3.6
11.7
24.1
3.8
11.4
23.5
4.0
11.2
23.1
4.2
10.9
22.6
4.4
10.7
22.1
4.6
10.5
21.7
4.8
10.3
21.3
5.0
10.1
20.9
6.0
9.2
19.2
7.0
8.5
17.9
8.0
8.0
16.7
9.0
7.6
15.7
10.0
7.1
14.7
1. Values extracted from measured performance.
2. For package inductance (L
S
) refer to package type.
3. For more details refer to the "Varactor SPICE Models for RF VCO
Applications" Application Note.
DIODE
Varactor_Diode
AREA = 1
MODEL = Diode_Model
MODE = nonlinear
RES
R
S
R = R
S
IND
L
S
L = L
S
CAP
C
P
C = C
P
PORT
P_anode
port = 1
PORT
P_Cathode
port = 2
DIODEM
Diode_Model
I
S
= 1.00e-14
R
S
= 0
N = 1
T
T
= 0
C
JO
= C
JO
M = M
V
J
= V
J
E
G
= 1.11
X
TI
= 3
K
F
=0
A
F
=1
F
C
= 0.5
B
V
= 0
I
BV
= 1e-3
I
SR
= 0
N
R
= 2
I
KF
= 0
N
BV
= 1
I
BVL
= 0
N
BVL
= 1
T
BV1
= 0
T
NOM
= 27
F
FE
= 1
Abrupt Junction Tuning Varactors
SMV1493SMV1494
Skyworks Solutions, Inc. [781] 376-3000
Fax [781] 376-3100 Email sales@skyworksinc.com www.skyworksinc.com
3
Specifications subject to change without notice. 5/03A
SOD-323
0.090 (2.30 mm) MIN.
0.108 (2.74 mm) MAX.
0.045 (1.15 mm) MIN.
0.053 (1.35 mm) MAX.
0.050
(1.25 mm) MAX.
0.006
(0.15 mm) TYP.
0.008 (0.20 mm) NOM.
0.004 (0.10 mm) MAX.
0.010 (0.25 mm) MIN.
0.010
(0.25 mm) MIN.
0.016
(0.40 mm) MAX.
0.063 (1.60 mm) MIN.
0.071 (1.80 mm) MAX.
CATHODE
INDICATOR
2
1
SC-79
0.060 (1.50 mm) MIN.
0.067 (1.70 mm) MAX.
0.010
(0.25 mm) MIN.
0.014
(0.35 mm) MAX.
0.043 (1.10 mm) MIN.
0.051 (1.30 mm) MAX.
0.020
(0.50 mm) MIN.
0.028
(0.70 mm) MAX.
0.003
(0.07 mm) MIN.
0.008
(0.20 mm) MAX.
10 MAX.
10 MAX.
0.028
(0.70 mm) MIN.
0.035
(0.90 mm) MAX.
0.006 (0.15 mm) MIN.
CATHODE
INDICATOR
1
2
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