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Performance Silicon Varactor Diode SKYWORKS SMV1235-079LF for High Q Resonators in Wireless Systems

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Performance Silicon Varactor Diode SKYWORKS SMV1235-079LF for High Q Resonators in Wireless Systems

Diode Configuration : 1 Independent

DC Reverse Voltage(Vr) : 15V

Series Resistance (Rs) : 600mΩ

Diode Capacitance : 6.4pF@3V;3.6pF@6V

Description : 1 Independent 15V 600mΩ SC-79 Variable Capacitance (Varicaps, Varactors) RoHS

Mfr. Part # : SMV1235-079LF

Model Number : SMV1235-079LF

Package : SC-79

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Skyworks SMV123x Series: Hyperabrupt Junction Tuning Varactors

Product Overview

The Skyworks SMV123x series comprises silicon hyperabrupt junction varactor diodes engineered for low tuning voltage Voltage Controlled Oscillators (VCOs). These varactors feature low series resistance, making them ideal for high-Q resonators in wireless system VCOs operating at frequencies exceeding 10 GHz. The series is characterized for capacitance and resistance over temperature, offering reliable performance in demanding applications.

Product Attributes

  • Brand: Skyworks Solutions, Inc.
  • Product Line: SMV123x Series
  • Technology: Silicon Hyperabrupt Junction
  • Compliance: Skyworks Green (Halogen-free, RoHS-compliant)
  • Moisture Sensitivity Level: MSL1 at 260 C

Technical Specifications

Absolute Maximum Ratings

Parameter Symbol Minimum Maximum Units
Reverse voltage VR 15 V
Forward current IF 20 mA
Power dissipation PDIS 250 mW
Operating temperature TOP -55 +125 C
Storage temperature TSTG -55 +150 C
Electrostatic discharge: Human Body Model (HBM), Class 1B ESD 1000 V

Electrical Specifications (TOP = 25 C, Unless Otherwise Noted)

Part Number CT @ 1 V (pF) CT @ 3 V (pF) CT @ 6 V (pF) CT @ 1 V / CT @ 3 V (Ratio) CT @ 1 V / CT @ 6 V (Ratio) RS @ 3 V, 500 MHz ()
Min Max Typ Min Max Min Max Typ
SMV1231 1.43 1.72 0.97 0.61 1.5 1.8 2.5 2.90
SMV1232 2.34 2.86 1.50 0.94 1.5 1.9 2.6 3.3 1.50
SMV1233 3.00 3.60 1.80 1.10 1.5 1.9 2.6 3.3 1.20
SMV1234 5.85 7.15 3.60 2.00 1.6 2.0 2.8 3.4 0.80
SMV1235 10.35 12.65 6.40 3.60 1.6 2.0 2.9 3.4 0.60
SMV1236 15.50 18.50 9.20 5.30 1.6 2.0 3.0 3.5 0.50
SMV1237 45.00 54.00 26.90 14.40 1.6 2.0 3.0 3.5 0.40

Capacitance vs Reverse Voltage

VR (V) CT (pF) SMV1231 CT (pF) SMV1232 CT (pF) SMV1233 CT (pF) SMV1234 CT (pF) SMV1235 CT (pF) SMV1236 CT (pF) SMV1237
0 2.35 4.15 5.08 9.63 18.22 26.75 71.82
0.5 1.87 3.22 3.95 7.53 14.12 20.61 56.10
1.0 1.58 2.67 3.28 6.28 11.67 17.02 46.89
1.5 1.40 2.28 2.80 5.39 9.91 14.38 40.33
2.0 1.22 1.97 2.41 4.68 8.52 12.29 35.13
2.5 1.09 1.72 2.09 4.09 7.36 10.56 30.71
3.0 0.970 1.51 1.82 3.58 6.40 9.16 26.87
3.5 0.882 1.35 1.62 3.15 5.62 8.04 23.57
4.0 0.794 1.22 1.45 2.81 4.99 7.19 20.83
4.5 0.732 1.13 1.33 2.54 4.50 6.53 18.62
5.0 0.683 1.05 1.24 2.32 4.11 6.01 16.87
5.5 0.648 0.99 1.16 2.15 3.80 5.61 15.48
6.0 0.613 0.94 1.10 2.02 3.55 5.28 14.36
6.5 0.590 0.90 1.05 1.90 3.34 5.02 13.46
7.0 0.567 0.86 1.01 1.80 3.17 4.81 12.72
7.5 0.551 0.84 0.98 1.72 3.03 4.64 12.11
8.0 0.534 0.81 0.96 1.65 2.91 4.49 11.61
9.0 0.512 0.78 0.92 1.55 2.73 4.28 10.87
10.0 0.497 0.76 0.90 1.47 2.61 4.13 10.38
11.0 0.492 0.75 0.88 1.42 2.53 4.02 10.06
12.0 0.487 0.74 0.87 1.38 2.47 3.95 9.84
13.0 0.480 0.73 0.86 1.35 2.43 3.89 9.68
14.0 0.472 0.73 0.85 1.33 2.40 3.84 9.56
15.0 0.466 0.72 0.84 1.32 2.38 3.80 9.47

SPICE Model Parameters

Part Number CJO (pF) VJ (V) M CP (pF) RS ()
SMV1231 1.88 10.13 4.999 0.44 2.50
SMV1232 3.43 8.36 4.690 0.68 1.50
SMV1233 4.21 11.87 6.430 0.81 1.20
SMV1234 8.36 7.95 3.960 1.15 0.80
SMV1235 15.85 8.78 4.570 2.15 0.60
SMV1236 22.89 9.62 5.230 3.59 0.50
SMV1237 61.40 14.51 6.780 8.90 0.25

Package and Marking Information

Package Type Marking Package Inductance (LS)
SC-79 Cathode and HF 0.7 nH
SOD-323 KA3 1.5 nH
SOT-23 A 1.5 nH
SC-70 Cathode and HG 1.4 nH
SOD-882 Y 0.45 nH
SC-79 Cathode and HK
SOD-323 B
SOT-23 Cathode and HS
SC-70 DQ
SOD-882 G
SC-79 Cathode and HX
SOD-323 Cathode and HY
SOT-23 EQ
SC-70 R
SOD-882 DT1

2403111455_SKYWORKS-SMV1235-079LF_C150886.pdf


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