Characteristic Value
Reverse Voltage (VR) 12 V
Forward Current (IF) 20 mA
Power Dissipation (PD) 250 mW
Storage Temperature (TST) -55°C to +150°C
Operating Temperature (TOP) -55°C to +125°C
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
■ High Capacitance Ratio, C
1 V/C4 V
= 5 Typ.
■ Multiple Packages SOT-23, SOD-323,
SC-70 and SC-79
■ Designed for High Volume Commercial
Applications
■ SPICE Models are Available
SMV1211–SMV1215
Description
The SMV1211–SMV1215 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
♦ SMV1211-001
♦ SMV1212-079 ♦ SMV1212-001 ♦ SMV1212-004 ♦ SMV1212-074
♦ SMV1213-079 ♦ SMV1213-011 ♦ SMV1213-001 ♦ SMV1213-004 ♦ SMV1213-074
♦ SMV1214-001
♦ SMV1215-011 ♦ SMV1215-001
LS= 0.7 nH LS= 1.5 nH LS= 1.5 nH LS= 1.4 nH LS= 1.4 nH
♦ Available through distribution.
For other packages or configurations, please contact the factory.
Hyperabrupt Junction Tuning Varactors SMV1211–SMV1215
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
VR = 1 V
VR = 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
01 23 45
R
S
(Ω)
SMV1215
SMV1214
SMV1213
SMV1212
SMV1211
Typical Performance Data
CT@ 1 V CT@ 1 V RS @ 4 V Q
Part CT@ 1 V CT@ 2.5 V CT@ 4 V CT@ 2.5 V CT@ 4 V 500 MHz @ 4 V
Number (pF) (pF) (pF) (Ratio) (Ratio) (ΩΩ) 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 25°C
Reverse V oltage VR(IR= 10 µA): 12 V
Reverse Current I
R(VR
= 8 V):20 nA
1.0
10.0
100.0
1000.0
6.0 8.04.0
Reverse Voltage (V)
Capacitance vs. Reverse Voltage
2.00
Capacitance (pF)
SMV1212
SMV1213
SMV1214
SMV1215
SMV1211
Hyperabrupt Junction Tuning Varactors SMV1211–SMV1215
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
MCPR
S
Number (pF) (V) (pF) (ΩΩ)
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
VR(V) CT(pF) CT(pF) CT(pF) CT(pF) CT(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
EG = 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 SMV1211–SMV1215
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
21
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
12
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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