ALPHA SMV1211-001, SMV1212-001, SMV1212-004, SMV1212-074, SMV1212-079 Datasheet
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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
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