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MA4ST079 thru MA4ST083 Series
Surface Mount Hyperabrupt Wide-Band Tuning Varactors
Rev. V6
Features
* * * * * * Low Cost Very High Capacitance Ratio from 1 to 8 Volts Surface Mount Package High Quality Factor Useful for Battery Applications SPC Monitored Ion Implantation for Excellent CV Repeatability * Singles and Common Cathode Pairs * Available in Tape and Reel * Lead-Free (RoHs Compliant) equivalents available with 260C reflow compatibility
SOT-23
Absolute Maximum Ratings 1,2 @ TA=+25 C (Unless Otherwise Noted)
Parameter
Reverse Voltage Forward Current Power Dissipation Operating Temperature Storage Temperature
Description
The MA4ST079 through MA4ST083 series of silicon hyperabrupt junction tuning varactors is produced with ion implantation and advanced epitaxial growth techniques. These diodes have thermal oxide passivation, and feature very high capacitance ratio and quality factor. They are well suited for use from the sub-HF through UHF frequency range. The standard capacitance tolerance is 10%, with tighter tolerances available. Capacitance matching at one or more bias voltages is also available.These diodes are offered with standard Sn/Pb plating , as well as 100% matte Sn plating on our RoHs compliant equivalent devices.
Absolute Maximum
12 V 50 mA 50mW @25C -65 C to +125 C -65 C to +125 C
1. Operation of this device above any one of these parameters may cause permanent damage. 2. Please refer to application note M538 for surface mounting instructions
Configurations
Applications
The MA4ST079 through MA4ST083 series of hyperabrupt junction tuning varactors is suggested for usage where a large frequency change is required with only a small change in tuning voltage. This series is appropriate for usage in wide band voltagecontrolled oscillators and voltage controlled filters which require the largest rate of change of capacitance with voltage. The large change in capacitance from 1 to 8 volts makes them very attractive for battery operated or other systems with limited available control voltage. The MA4ST079 through MA4ST083 family can be used in VCOs and VTFs from approximately 100 KHz through the UHF frequency band.
Ordering Information
Part Number
MA4ST079 MA4ST080 MA4ST081 MA4ST082 MA4ST083
RoHs Compliant Part Number3
MAVR-000079-XXXXXX MAVR-000080-XXXXXX MAVR-000081-XXXXXX MAVR-000082-XXXXXX MAVR-000083-XXXXXX
1
Specifications are subject to change without prior
3. Suffix refers to package style , configuration and packaging requirements. See electrical specification for complete part number offerings notification
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions * North America Tel: 800.366.2266 / Fax: 978.366.2266 is considering for development. Performance is based on target specifications, simulated results, * Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 and/or prototype measurements. Commitment to develop is not guaranteed. * Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Visit www.macomtech.com for additional data sheets and product information. Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.
MA4ST079 thru MA4ST083 Series
Surface Mount Hyperabrupt Wide-Band Tuning Varactors
Rev. V6
Electrical Specifications @ TA = +25 C
Breakdown Voltage @ IR = 10A, Vb = 12 V Minimum Reverse Leakage Current @ VR =10V, IR = 100 nA Maximum Temperature Coefficient of Capacitance @VR=8 Volts, TCC=400ppm/C Typical
Ct (pF) Part Number Base 1 RoHS Compliant Part No. Base 1
2
Typ. Capacitance Ratio Ct1V/Ct8V
VR = 8 V f = 1 MHz Max. 11.8 5.5 5.5 2.4 2.4 1.8 1.8 1.3 1.3 VR = 1V/8V f = 1 MHz Typ. 9.1 8.9 8.9 8.5 8.5 8.2 8.2 7.8 7.8
Typical Q
VR = 1 V f = 1 MHz Min.
VR = 2.5 V f = 1 MHz Min. 48.7 22.3 22.3 9.1 9.1 6.6 6.6 4.5 4.5 Max. 59.5 27.3 27.3 11.1 11.1 8.0 8.0 5.5 5.5
VR = 4 V f = 1 MHz Max 27.3 13.1 13.1 5.2 5.2 3.8 3.8 2.6 2.6
VR = 4 V f = 50 MHz Typ. 80 150 150 300 300 350 350 450 450
MA4ST079CK-287T MA4ST080-287T MA4ST080CK-287T MA4ST081-287T MA4ST081CK-287T MA4ST082-287T MA4ST082CK-287T MA4ST083-287T MA4ST083CK-287T
MAVR-000079-0287FT MAVR-000080-0287AT MAVR-000080-0287FT MAVR-000081-0287AT MAVR-000081-0287FT MAVR-000082-0287AT MAVR-000083-0287AT MAVR-000083-0287FT
87.4 40.0 40.0 16.2 16.2 11.5 11.5 7.9 7.9
Typical Performance Curves 3
Total Capacitance vs. Reverse Voltage Nominal vs. Reverse Voltage
1. 2. 3. 2
The prefix defines package style, configuration and packaging information. Contact representative for complete part identification. Capacitance @ 1 MHz Performance curves also reflect that of the RoHs equivalent part
Specifications are subject to change without prior notification
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions * North America Tel: 800.366.2266 / Fax: 978.366.2266 is considering for development. Performance is based on target specifications, simulated results, * Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 and/or prototype measurements. Commitment to develop is not guaranteed. * Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Visit www.macomtech.com for additional data sheets and product information. Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.
MA4ST079 thru MA4ST083 Series
Surface Mount Hyperabrupt Wide-Band Tuning Varactors
Rev. V6
Case Styles SOT-23 (Case Style 287)
F D A N
SOT-23 (Case Style 287)
DIM.
A B C D E F G H J K L
INCHES MIN. MAX.
0.048 0.008 0.040 0.013 0.020 0.003 0.006 0.110 0.119 0.047 0.056 0.037 typical 0.075 typical 0.103 0.024 10 max. 2 . . .30
MILLIMETERS MIN. MAX.
1.22 0.20 1.00 0.35 0.50 0.08 0.15 2.80 3.00 1.20 1.40 0.95 typical 1.90 typical 2.60 0.60
M G
B K
L H J C E
DIM.
GRADIENT
Mounting Information
The illustration indicates the recommended mounting pad configuration for the SOT-23 package. Solder paste containing flux should be screened onto the pads to a thickness of 0.005- 0.007 inches. The plastic package is placed in position, firmly adhering to the solder paste. Permanent attachment is performed by a reflow soldering procedure during which the tab temperature does not exceed +275 C and the body temperature does not exceed +250 C, for standard models and +260 C for the RoHS compliant devices. Please refer to Application Note M538 for surface mounting instructions.
M N
SOT-23
.030 min. 0.80
.035 min. 0.90 .037 0.95 0.75 1.9
.090 2.2
Dimenstions: inches mm
3
Specifications are subject to change without prior notification
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions * North America Tel: 800.366.2266 / Fax: 978.366.2266 is considering for development. Performance is based on target specifications, simulated results, * Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 and/or prototype measurements. Commitment to develop is not guaranteed. * Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Visit www.macomtech.com for additional data sheets and product information. Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.

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