ALPHA SMV1413-001, SMV1417-001, SMV1417-004, SMV1411-001, SMV1405-001 Datasheet
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Characteristic Value
Reverse Voltage (VR) 30 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
Abrupt Junction Tuning Varactors
Features
■ High Q
■ Low Series Resistance for Low Phase
Noise
■ Multiple Packages SOT-23, SOD-323,
SC-70 and SC-79
■ Designed for High Volume Commercial
Applications
■ SPICE Models are Available
SMV1405–SMV1419
Description
The SMV1405–SMV1419 series of silicon abrupt junction
varactor diodes are designed for use in VCOs requiring tight
capacitance tolerances. 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 devices are characterized for capacitance over
temperature.SPICE models are provided.
Single Single Common Cathode Common Cathode
SC-79 SOT-23 SOT-23 SC-70
♦ SMV1405-079 ♦ SMV1405-001 ♦ SMV1405-074
♦ SMV1408-001
♦ SMV1411-001
♦ SMV1413-001
♦ SMV1417-001 ♦ SMV1417-004
♦ SMV1419-001
LS= 0.7 nH LS= 1.5 nH LS= 1.5 nH LS= 1.4 nH
♦ Available through distribution.
For other packages or configurations, please contact the factory.
Abrupt Junction Tuning Varactors SMV1405–SMV1419
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
0.1
1.0
10.0
100.0
Reverse Voltage (V)
Capacitance vs. Reverse Voltage
Capacitance (pF)
0 5 10 15 20 25 30
SMV1419
SMV1417
SMV1413
SMV1411
SMV1408
SMV1405
-5
-4
-3
-1
-2
0
1
2
3
5
4
6
-40 -20 0 20 40 60 80
Percentage Change (%)
Temperature (˚C)
Relative Capacitance Change
vs. Temperature
VR = 1 V
VR = 4 V VR = 30 V
Typical Performance Data
Typical Capacitance Values
SMV1405 SMV1408 SMV1411 SMV1413 SMV1417 SMV1419
VR(V) CT(pF) CT(pF) CT(pF) CT(pF) CT(pF) CT(pF)
0.0 2.67 4.08 7.58 9.24 19.20 23.44
0.5 2.12 3.36 6.05 7.39 15.30 18.72
1.0 1.84 2.94 5.21 6.37 13.16 16.64
1.5 1.70 2.60 4.66 5.71 11.76 14.38
2.0 1.55 2.38 4.27 5.22 10.74 13.14
2.5 1.44 2.24 4.00 4.85 9.95 12.18
3.0 1.34 2.08 3.72 4.55 9.32 11.42
4.0 1.25 1.88 3.35 4.10 8.35 10.26
5.0 1.17 1.72 3.08 3.77 7.64 9.40
10.0 0.95 1.28 2.32 2.85 5.62 7.00
20.0 0.77 1.01 1.69 2.12 4.09 5.10
30.0 0.63 0.95 1.48 1.77 3.79 4.30
C
T
C
T
CT@ 0 V RS@ 4 V Q
Part @ 0.5 V @ 1 V C
T
@ 4 V CT@ 30 V 500 MHz @ 4 V
Number (pF) (pF) (pF) (Ratio) (ΩΩ) 50 MHz
Typ. Typ. Min. Max. Min. Max. Typ.
SMV1405 2.1 1.8 1.21 1.45 4.1 0.80 3200
SMV1408 3.4 2.9 1.75 2.11 4.1 0.60 2900
SMV1411 6.0 5.2 3.10 3.76 4.2 0.40 2500
SMV1413 7.4 6.4 3.64 4.42 4.2 0.35 2400
SMV1417 15.3 13.2 7.51 9.15 4.3 0.22 1800
SMV1419 18.7 16.6 9.13 11.13 4.4 0.20 1600
Electrical Specifications at 25°C
Reverse V oltage VR(IR= 10 µA): 30 V
Reverse Current I
R(VR
= 24 V):20 nA
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