ALPHA SMV1146-011, SMV1147-011, SMV1148-011, SMV1142-011, SMV1143-011 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
■ Frequency Linear Design
■ Low Series Resistance
■ Available in the SOD-323 and SC-79
Packages
■ Designed for High Volume Commercial
Applications
■ SPICE Models are Available
SMV1142–SMV1148
Description
The SMV1142–SMV1148 series of silicon hyperabrupt
junction varactor diodes are specifically designed with an
increasing gamma vs. voltage characteristic. This
characteristic will result in improved VCO frequency-voltage
linearity, in comparison to a conventional hyperabrupt
junction varactor . This family of varactors is characterized
for capacitance and resistance over temperature. SPICE
models are provided.
♦ Available through distribution.
For other packages or configurations, please contact the factory.
Single Single
SC-79 SOD-323
♦ SMV1142-011
♦ SMV1143-011
♦ SMV1144-011
♦ SMV1145-079 ♦ SMV1145-011
♦ SMV1146-011
♦ SMV1147-011
♦ SMV1148-011
LS= 0.7 nH LS= 1.5 nH
Hyperabrupt Junction Tuning Varactors SMV1142–SMV1148
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
1.0
10.0
100.0
6.0 8.04.0
Reverse Voltage (V)
Capacitance vs. Reverse Voltage
2.00
Capacitance (pF)
SMV1148
SMV1147
SMV1146
SMV1145
SMV1144
SMV1143
SMV1142
-3
-2
-1
0
1
2
3
4
5
-40 -20 0 20 40 60 80
Percentage Change (%)
Temperature (˚C)
Relative Capacitance Change
vs. Temperature
VR = 1 V
VR = 4 V
12
10
8
6
4
2
0
-2
-4
-6
-8
-40 -20 0 20 40 60 80
Percentage Change (%)
Temperature (˚C)
Relative Series Resistance Change
vs. Temperature
0.4
0.6
0.8
Reverse Voltage (V)
Series Resistance vs. Reverse Voltage
@ 500 MHz
01 23 45
R
S
(Ω)
SMV1142
SMV1143
SMV1144
SMV1145
SMV1147
SMV1148
SMV1146
Typical Performance Data
C
T
C
T
CT@ 1 V CT@ 1 V RS@ 3 V Q
Part CT@ 1 V @ 3 V @ 6 V CT@ 3 V CT@ 6 V 500 MHz @ 3 V
Number (pF) (pF) (pF) (Ratio) (Ratio) (ΩΩ) 50 MHz
Min. Max. Typ. Typ. Min. Max. Min. Max. Max. Typ.
SMV1142 8.20 10.00 5.8 3.5 1.50 1.65 2.43 2.93 0.70 800
SMV1143 11.60 14.20 8.2 4.9 1.50 1.65 2.45 2.95 0.65 600
SMV1144 14.65 17.95 10.4 6.1 1.50 1.65 2.46 2.96 0.65 500
SMV1145 25.50 31.20 18.1 10.6 1.50 1.65 2.50 3.00 0.60 300
SMV1146 37.80 46.20 26.4 15.5 1.50 1.65 2.50 3.00 0.60 200
SMV1147 54.60 66.70 38.6 22.6 1.50 1.65 2.50 3.00 0.55 150
SMV1148 62.00 76.00 44.1 25.2 1.50 1.65 2.50 3.00 0.50 150
Electrical Specifications at 25°C
Reverse V oltage VR(IR= 10 µA): 12 V
Reverse Current I
R(VR
= 9.6 V):20 nA
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