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
Alpha Industries, Inc. [781] 935-5150
Fax [617] 824-4579 Email sales@alphaind.com www.alphaind.com
1
Specifications subject to change without notice. 10/99A
Hyperabrupt Junction Tuning Varactors
Features
I High Q
I Low Series Resistance for Low Phase
Noise
I Multiple Packages SOD-323, SC-79
and SC-70
I Designed for High Volume Commercial
Applications
I SPICE Models are Available
SMV1129 and SMV1139
Description
The SMV1129 and SMV1139 silicon hyperabrupt junction
varactor diodes are designed for use in VCOs requiring
low resistance. The low resistance of these varactors
makes them appropriate for high Q resonators in
wireless system VCOs to frequencies beyond 2.5 GHz.
o Available through distribution.
For other packages or configurations, please contact the factory.
Single
Single
Common Anode
SOD-323
SC-79
SC-70
o SMV1129-011
o SMV1129-079
SMV1129-073
o SMV1139-011
o SMV1139-079
L
S
= 1.5 nH
L
S
= 0.7 nH
L
S
= 1.4 nH
C
T
@ 1 V
C
T
@ 1 V
R
S
@ 1 V
Part
C
T
@ 1 V
C
T
@ 3 V
C
T
@ 6 V
500 MHz
Number
(pF)
(Ratio)
(Ratio)
(
)
Min.
Typ.
Max.
Min.
Typ.
Min.
Typ.
Max.
SMV1129
17.50
19.0
20.50
1.4
1.53
2.0
2.5
0.4
SMV1139
4.95
5.4
5.85
1.4
1.53
2.0
2.5
0.6
Electrical Specifications at 25C
Reverse Voltage V
R
(I
R
= 10
A): 12 V
Reverse Current I
R
(V
R
= 10 V): 20 nA
Hyperabrupt Junction Tuning Varactors
SMV1129 and SMV1139
2
Alpha Industries, Inc. [781] 935-5150
Fax [617] 824-4579 Email sales@alphaind.com www.alphaind.com
Specifications subject to change without notice. 10/99A
Part
C
JO
V
J
M
C
P
R
S
Number
(pF)
(V)
(pF)
(
)
SMV1129
27.5
2.8
1.10
0
0.40
SMV1139
8.0
1.2
0.65
0
0.60
Reverse Voltage (V)
Capacitance vs. Reverse Voltage
Capacitance (pF)
0
5
10
15
20
25
30
0
2
4
6
8
10
SMV1139
SMV1129
Typical Performance Data
Capacitance vs. Reverse Voltage
SPICE Model
SMV1129
SMV1139
V
R
(V)
C
T
(pF)
C
T
(pF)
0
27.5
8.0
1
18.9
5.5
2
15.0
4.4
3
12.5
3.7
4
10.7
3.1
5
9.3
2.7
6
8.1
2.5
7
7.1
2.3
8
6.3
2.2
9
5.7
2.1
10
5.2
2.0
11
4.9
2.0
12
4.7
1.9
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
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
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
Hyperabrupt Junction Tuning Varactors
SMV1129 and SMV1139
Alpha Industries, Inc. [781] 935-5150
Fax [617] 824-4579 Email sales@alphaind.com www.alphaind.com
3
Specifications subject to change without notice. 10/99A
SC-70
3
2
1
0.031 (0.80 mm) MIN.
0.039 (1.00 mm) MAX.
0.000 (0.00 mm) MIN.
0.004 (0.10 mm) MAX.
0.010 (0.25 mm) MIN.
0.016 (0.40 mm) MAX.
0.071 (1.80 mm) MIN.
0.087 (2.20 mm) MAX.
0.071 (1.80 mm) MIN.
0.094 (2.40 mm) MAX.
0.045 (1.15 mm) MIN.
0.053 (1.35 mm) MAX.
0.026 (0.65 mm) REF.
0.051 (1.30 mm) REF.
0.004 (0.10 mm) MIN.
0.007 (0.18 mm) MAX.
0.004 (0.10 mm) MIN.
0.012 (0.30 mm) MAX.
0.014 (0.35 mm) REF.
PDF 
ZIP