ALPHA SMV1233-003, SMV1233-004, SMV1233-011, SMV1233-073, SMV1233-074 Datasheet
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Characteristic Value
Reverse Voltage (VR) 15 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
ESD Human Body Model Class 1B
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. 6/99A
Hyperabrupt T uning V aractors
Features
■ High Capacitance Ratio,
C
1 V/C3 V
= 1.8, C
1 V/C6 V
= 3.1
■ Low Series Resistance for Low
Phase Noise
■ Multiple Packages SOT-23, SOD-323,
SC-70 and SC-79
■ Designed for High Volume Commercial
Applications
■ Full Characterization with SPICE Models
SMV1232–SMV1237
Description
The SMV1232–SMV1237 series of silicon hyperabrupt
junction varactor diodes are designed for use in VCOs with
low tuning voltage operation.The low resistance of these
varactors makes them appropriate for high Q resonators
in wireless system VCOs to frequencies be yond 2.5 GHz.
The SMV1232–SMV1237 series is fully characterized for
capacitance and resistance over temperature.SPICE model
is provided.
♦ Available through distribution.
For other packages or configurations, please contact the factory.
Single Single Single Common Anode Common Cathode Common Anode Common Cathode
SC-79 SOD-323 SOT-23 SOT-23 SOT-23 SC-70 SC-70
♦ SMV1232-079 ♦ SMV1232-011 ♦ SMV1232-074
♦ SMV1233-079 ♦ SMV1233-011 ♦ SMV1233-001 ♦ SMV1233-003 ♦ SMV1233-004 ♦ SMV1233-073 ♦ SMV1233-074
♦ SMV1234-079 ♦ SMV1234-011 ♦ SMV1234-001 ♦ SMV1234-003 ♦ SMV1234-004 ♦ SMV1234-073 ♦ SMV1234-074
♦ SMV1235-079 ♦ SMV1235-011 ♦ SMV1235-001 ♦ SMV1235-004 ♦ SMV1235-074
♦ SMV1236-079 ♦ SMV1236-011 ♦ SMV1236-001 ♦ SMV1236-004 ♦ SMV1236-074
♦ SMV1237-001 ♦ SMV1237-004
LS= 0.7 nH LS= 1.5 nH LS= 1.5 nH LS= 1.5 nH LS= 1.5 nH LS= 1.4 nH LS= 1.4 nH
Hyperabrupt Tuning Varactors SMV1232–SMV1237
2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 6/99A
0.1
10.0
1.0
100.0
6.0 8.04.0
Reverse Voltage (V)
Capacitance vs. Reverse Voltage
2.00
Capacitance (pF)
SMV1237
SMV1236
SMV1235
SMV1234
SMV1233
SMV1232
-4
-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 = 3 V
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 @ 500 MHz
0
1
2
Reverse Voltage (V)
Series Resistance vs. Reverse Voltage
@ 500 MHz
0 1 2 3 4 5
R
S
(Ω)
SMV1232
SMV1233
SMV1234
SMV1235
SMV1237
SMV1236
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.
SMV1232 2.34 2.86 1.5 0.94 1.5 1.9 2.6 3.3 1.50 1400
SMV1233 3.00 3.60 1.8 1.10 1.5 1.9 2.6 3.3 1.20 1200
SMV1234 5.85 7.15 3.6 2.00 1.6 2.0 2.8 3.4 0.80 1000
SMV1235 10.35 12.65 6.4 3.60 1.6 2.0 2.9 3.4 0.60 750
SMV1236 15.50 18.50 9.2 5.30 1.6 2.0 3.0 3.5 0.50 700
SMV1237 45.00 54.00 26.9 14.40 1.6 2.0 3.0 3.5 0.25 500
Electrical Specifications at 25°C
Reverse Voltage VR(IR= 10 µA): 15 V
Reverse Current I
R(VR
= 12 V):20 nA
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