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whatsoever arising out of the use or application of any product(s) or

information.

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Visit www.macom.com for additional data sheets and product information.

Also Offering

RoHs Compliant

Equivalent Parts

Surface Mount Hyperabrupt

Wide-Band Tuning Varactors

MA4ST079 thru

MA4ST083 Series V4

1

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

C-V Repeatability

•

Singles and Common Cathode Pairs

•

Available in Tape and Reel

•

Lead-Free (RoHs Compliant) equivalents avail-

able with 260°C reflow compatibility

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 fre-

quency range. The standard capacitance tolerance is

±10%, with tighter tolerances available. Capacitance

matching at one or more bias voltages is also avail-

able.These diodes are offered with standard Sn/Pb plat-

ing , as well as 100% matte Sn plating on our RoHs com-

pliant equivalent devices.

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 volt-

age 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

(Unless Otherwise Noted)

1

1. Operation of this device above any one of these parameters

may cause permanent damage.

Parameter

Absolute Maximum

Reverse Voltage

12 V

Forward Current

50 mA

Operating Temperature

-65 °C to +125 °C

Storage Temperature

-65 °C to +125 °C

Power Dissipation

50mW @25°C

Part Number

RoHs Compliant Part Number

1

MA4ST079

MAVR-000079-XXXXXX

MA4ST080

MAVR-000080-XXXXXX

MA4ST081

MAVR-000081-XXXXXX

MA4ST082

MAVR-000082-XXXXXX

MA4ST083

MAVR-000083-XXXXXX

ments. Contact representative for complete part number information.

SOT-23

Configurations