Characteristic
Value
Reverse Voltage (V
R
)
12 V
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. 1/01A
Hyperabrupt Junction Tuning Varactors
Features
s
High Capacitance Ratio, C
1 V
/C
4 V
= 5 Typ.
s
Multiple Packages SOT-23, SOD-323,
SC-70 and SC-79
s
Designed for High Volume Commercial
Applications
s
SPICE Models are Available
SMV1211SMV1215
Description
The SMV1211SMV1215 series of silicon hyperabrupt
junction varactor diodes are designed for use in VCOs with
low tuning voltage operation. This family of varactors is
characterized for capacitance and resistance over
temperature. SPICE models are provided.
Single
Single
Single
Common Cathode
Common Cathode
SC-79
SOD-323
SOT-23
SOT-23
SC-70
o
SMV1211-001
o
SMV1212-079
o
SMV1212-001
o
SMV1212-004
o
SMV1212-074
o
SMV1213-079
o
SMV1213-011
o
SMV1213-001
o
SMV1213-004
o
SMV1213-074
o
SMV1214-001
o
SMV1215-011
o
SMV1215-001
L
S
= 0.7 nH
L
S
= 1.5 nH
L
S
= 1.5 nH
L
S
= 1.4 nH
L
S
= 1.4 nH
o
Available through distribution.
For other packages or configurations, please contact the factory.
Hyperabrupt Junction Tuning Varactors
SMV1211SMV1215
2
Alpha Industries, Inc. [781] 935-5150
Fax [617] 824-4579
Email sales@alphaind.com
www.alphaind.com
Specifications subject to change without notice. 1/01A
-3
-2
-1
0
1
2
3
-40
-20
0
20
40
60
80
Percentage Change (%)
Temperature (C)
Relative Capacitance Change
vs. Temperature
V
R
= 1 V
V
R
= 4 V
-40
-20
0
20
40
60
80
Percentage Change (%)
Temperature (C)
Relative Series Resistance Change
vs. Temperature @ 500 MHz
-15
-10
-5
0
5
10
15
0
1
2
3
4
Reverse Voltage (V)
Series Resistance vs. Reverse Voltage
@ 500 MHz
0
1
2
3
4
5
R
S
(
)
SMV1215
SMV1214
SMV1213
SMV1212
SMV1211
Typical Performance Data
C
T
@ 1 V
C
T
@ 1 V
R
S
@ 4 V
Q
Part
C
T
@ 1 V
C
T
@ 2.5 V
C
T
@ 4 V
C
T
@ 2.5 V
C
T
@ 4 V
500 MHz
@ 4 V
Number
(pF)
(pF)
(pF)
(Ratio)
(Ratio)
(
)
50 MHz
Min.
Typ.
Min.
Max.
Typ.
Max.
Typ.
Typ.
Typ.
Min.
SMV1211
95.0
100.0
40.0
65.0
20
25.0
2
5
0.4
80
SMV1212
42.0
50.0
18.0
27.0
9
12.0
2
5
0.8
150
SMV1213
17.0
22.0
8.5
10.5
4
5.5
2
5
1.4
200
SMV1214
14.5
16.0
6.5
7.8
3
4.8
2
5
1.7
300
SMV1215
8.7
9.5
4.3
5.5
2
2.9
2
5
2.8
350
Electrical Specifications at 25C
Reverse Voltage V
R
(I
R
= 10
A): 12 V
Reverse Current I
R
(V
R
= 8 V): 20 nA
1.0
10.0
100.0
1000.0
6.0
8.0
4.0
Reverse Voltage (V)
Capacitance vs. Reverse Voltage
2.0
0
Capacitance (pF)
SMV1212
SMV1213
SMV1214
SMV1215
SMV1211
Hyperabrupt Junction Tuning Varactors
SMV1211SMV1215
Alpha Industries, Inc. [781] 935-5150
Fax [617] 824-4579
Email sales@alphaind.com
www.alphaind.com
3
Specifications subject to change without notice. 1/01A
Part
C
JO
V
J
M
C
P
R
S
Number
(pF)
(V)
(pF)
(
)
SMV1211
168.00
500
54
0.0
0.4
SMV1212
72.47
110
67
4.5
0.8
SMV1213
28.90
190
105
2.2
1.4
SMV1214
22.74
190
106
1.5
1.7
SMV1215
14.36
190
115
1.1
2.8
Typical Capacitance Values
SPICE Model
SMV1211
SMV1212
SMV1213
SMV1214 SMV1215
V
R
(V)
C
T
(pF)
C
T
(pF)
C
T
(pF)
C
T
(pF)
C
T
(pF)
0.0
162.6
72.4
30.0
26.0
14.8
0.5
122.3
55.3
22.8
19.6
11.3
1.0
98.6
44.9
18.1
15.6
9.1
1.5
80.4
36.9
15.3
12.4
7.5
2.0
64.2
29.9
12.3
9.6
6.0
2.5
48.2
22.9
9.2
6.8
4.5
3.0
34.1
16.3
6.4
4.7
3.1
3.5
24.7
11.8
4.5
3.5
2.3
4.0
19.4
9.3
3.5
2.9
1.9
4.5
16.4
7.9
3.0
2.5
1.7
5.0
14.6
7.0
2.6
2.3
1.5
5.5
13.3
6.4
2.4
2.1
1.4
6.0
12.4
6.0
2.2
2.0
1.3
6.5
11.7
5.7
2.1
1.9
1.3
7.0
11.2
5.5
2.0
1.8
1.2
7.5
10.8
5.3
1.9
1.8
1.2
8.0
10.5
5.1
1.9
1.7
1.2
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
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
Hyperabrupt Junction Tuning Varactors
SMV1211SMV1215
4
Alpha Industries, Inc. [781] 935-5150
Fax [617] 824-4579
Email sales@alphaind.com
www.alphaind.com
Specifications subject to change without notice. 1/01A
SOT-23
3
2
1
0.035 (0.89 mm) MIN.
0.044 (1.12 mm) MAX.
0.0005 (0.01 mm) MIN.
0.004 (0.10 mm) MAX.
0.012 (0.30 mm) MIN.
0.020 (0.50 mm) MAX.
0.003 (0.080 mm) MIN.
0.008 (0.20 mm) MAX.
8 MAX.
0.022 (0.55 mm) REF.
0.110 (2.80 mm) MIN.
0.120 (3.04 mm) MAX.
0.083 (2.10 mm) MIN.
0.104 (2.64 mm) MAX.
0.037 (0.95 mm) REF.
0.047 (1.20 mm) MIN.
0.055 (1.40 mm) MAX.
0.076 (1.92 mm) REF.
0.020 (0.51 mm) REF.
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
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.
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