High volume commercial system varactor diode Skyworks SMV1247-079LF with hyperabrupt junction technology
Product Overview
The Skyworks SMV1247-SMV1255 series are silicon hyperabrupt junction varactor diodes designed for low tuning voltage Voltage Controlled Oscillators (VCOs) in high-volume commercial systems. These varactors are characterized for capacitance and resistance over temperature, offering a high capacitance ratio of 12 typical (C0.3V/C4.7V). They are rated MSL1 at 260 C and are available in various lead-free and RoHS-compliant packages.
Product Attributes
- Brand: Skyworks Solutions, Inc.
- Product Line: Hyperabrupt Junction Tuning Varactors
- Certifications: Skyworks Green (compliant with applicable legislation and halogen-free)
- Moisture Sensitivity Level: MSL1 at 260 C
- Packaging Compliance: RoHS-compliant (Pb-free)
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 (CDM, Class 4) | ESD | 1000 | V | |
| Electrostatic discharge (HBM, Class 1A) | ESD | 250 | V | |
| Electrostatic discharge (MM, Class A) | ESD | <50 | V |
Electrical Specifications (TOP = 25 C, Unless Otherwise Noted)
| Part Number | Capacitance (pF) | Capacitance Ratio (Typ) | RS @ 3 V, 500 MHz () | Q @ 3 V, 50 MHz (Min Typ) | ||
|---|---|---|---|---|---|---|
| CT @ 0.3 V | CT @ 4.7 V | CT @ 0.3 V / CT @ 4.7 V | CT @ 1 V / CT @ 3 V | |||
| SMV1247 | 6.5 - 7 | 0.7 - 0.78 | 9.5 Typ | 4.6 Typ | 1500 | 6.0 |
| SMV1248 | 15.0 - 17 | 1.5 - 1.70 | 10.8 Typ | 4.7 Typ | 700 | 3.3 |
| SMV1249 | 28.0 - 31 | 2.6 - 2.80 | 11.0 Typ | 5.3 Typ | 600 | 2.2 |
| SMV1251 | 38.0 - 42 | 3.4 - 3.80 | 11.0 Typ | 4.8 Typ | 400 | 1.6 |
| SMV1253 | 48.0 - 53 | 4.3 - 4.80 | 11.0 Typ | 4.7 Typ | 350 | 1.4 |
| SMV1255 | 58.0 - 64 | 5.2 - 5.80 | 11.0 Typ | 5.1 Typ | 350 | 1.3 |
Capacitance vs Reverse Voltage (Table 4)
| VR (V) | SMV1247 (pF) | SMV1248 (pF) | SMV1249 (pF) | SMV1251 (pF) | SMV1253 (pF) | SMV1255 (pF) |
|---|---|---|---|---|---|---|
| 0 | 8.86 | 22.62 | 37.35 | 53.65 | 69.32 | 81.21 |
| 0.5 | 6.17 | 16.32 | 25.88 | 38.23 | 50.23 | 58.28 |
| 1.0 | 4.37 | 12.33 | 18.18 | 28.09 | 37.07 | 43.27 |
| 1.5 | 2.96 | 9.12 | 12.08 | 20.13 | 27.57 | 31.49 |
| 2.0 | 1.88 | 6.27 | 7.27 | 13.55 | 19.37 | 21.50 |
| 2.5 | 1.22 | 3.93 | 4.44 | 8.60 | 12.39 | 13.40 |
| 3.0 | 0.95 | 2.57 | 3.40 | 5.78 | 7.77 | 8.51 |
| 3.5 | 0.83 | 1.95 | 2.96 | 4.57 | 5.77 | 6.51 |
| 4.0 | 0.77 | 1.71 | 2.72 | 3.95 | 4.86 | 5.58 |
| 4.5 | 0.73 | 1.59 | 2.51 | 3.58 | 4.34 | 5.07 |
| 5.0 | 0.70 | 1.49 | 2.38 | 3.33 | 4.01 | 4.76 |
| 5.5 | 0.68 | 1.44 | 2.30 | 3.16 | 3.78 | 4.58 |
| 6.0 | 0.67 | 1.40 | 2.24 | 3.03 | 3.62 | 4.46 |
| 6.5 | 0.66 | 1.36 | 2.19 | 2.94 | 3.50 | 4.39 |
| 7.0 | 0.65 | 1.33 | 2.14 | 2.88 | 3.41 | 4.33 |
| 7.5 | 0.64 | 1.31 | 2.09 | 2.83 | 3.34 | 4.29 |
| 8.0 | 0.64 | 1.30 | 2.03 | 2.79 | 3.28 | 4.26 |
SPICE Model Parameters
| Part Number | CJO (pF) | VJ (V) | M | CP (pF) | RS () |
|---|---|---|---|---|---|
| SMV1247 | 8.47 | 80 | 0.70 | 0.54 | 4.9 |
| SMV1248 | 22.12 | 138 | 1.00 | 0.87 | 2.4 |
| SMV1249 | 36.40 | 80 | 0.70 | 1.68 | 1.7 |
| SMV1251 | 52.48 | 100 | 0.76 | 2.00 | 1.4 |
| SMV1253 | 51.8 | 73.6 | 0.487 | 2.7 | 1.1 |
| SMV1255 | 80.00 | 135 | 1.00 | 2.74 | 1.0 |
Package Dimensions (Example: SC-79)
Refer to Figures 6-13 in the datasheet for detailed package and tape/reel dimensions for SC-79, SOD-323, SOD-882, and SOT-23 packages.
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