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Low-Voltage / High Q Si Hyperabrupt Varactors

Rev. V5

MA4ST200 Series

• North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400

• India Tel: +91.80.4155721

• China Tel: +86.21.2407.1588

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

M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make

changes to the product(s) or information contained herein without notice.

ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions

is considering for development. Performance is based on target specifications, simulated results,

and/or prototype measurements. Commitment to develop is not guaranteed.

PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology

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.

Commitment to produce in volume is not guaranteed.

Features

• Surface Mount Packages

(SOT-23, SC70 3LD, SOD-323)

• High Q at Low Voltages

• High Capacitance Ratio at Low Voltages

• SPC Process for Superior C-V Repeatability

• Available as Single and Common Cathode Pairs

Tape and Reel Packaging

• Designed for Commercial Wireless Applications

• Lead-Free (RoHS Compliant) equivalents avail-

able with 260°C reflow compatibility

Description

M/A-COM’s MA4ST200 series is a ion-implanted,

hyperabrupt junction, silicon tuning varactors in

SOT-23, SC70 3LD, and SOD- 323 surface mount

packages. This series of varactors is designed for

high Q and low voltage operation. Each varactor

type has a Q greater than 400 at -2 V. These diodes

are offered with standard Sn/Pb plating , as well as

100% matte Sn plating on our RoHS compliant

equivalent devices.

Applications

The MA4ST200 series tuning varactors are useful

for wide band tuning and low phase noise applica-

tions where the supply voltage is limited to 5 volts or

less. These varactors have been specifically de-

signed for use in the wireless communications up to

the 2.4 GHz band. Applications include VCOs and

voltage tuned filters.

Absolute Maximum Ratings

1,2

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

Parameter

Absolute Maximum

Reverse Voltage

12 V

Forward Current

50 mA

Operating Temperature

-55 °C to +125 °C

Storage Temperature

-55 °C to +125 °C

Total Power Dissipation

250 mW

Part Number

RoHS Compliant Base

Part Number

MA4ST230

MAVR-000230

MA4ST240

MAVR-000240

MA4ST250

MAVR-000250

0.25

0.5

0.75

1.0

2.0

3.0

350

FREQUENCY (GHz)

JCT

NMT

AMPS

TACS

NMT

IS-136/95

GSM

PDC

CT2

Active Pagers

DECT

PHP

DCS1800

WLAN

GPS

PCS

SMR

340

330

320

Typical Device Selection by Frequency

Configurations

RoHS Compliant Parts

Specifications are subject to change without prior notification