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

product(s) or information contained herein without notice. M/A-COM makes

no warranty, representation or guarantee regarding the suitability of its

products for any particular purpose, nor does M/A-COM assume any liability

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

information.

• North America Tel: 800.366.2266 / Fax: 978.366.2266

• Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300

• Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298

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

Also Offering

RoHS Compliant

Equivalent Parts

Low-Voltage / High Q

Si Hyperabrupt Varactors

V2

MA4ST200 Series

1

Features

(SOT-23, SOT-323, SOD-323)

Tape and Reel Packaging

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, SOT-323, 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.

RoHS Compliant parts

(Unless Otherwise Noted)

1

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

Fig. 1 Typical Device Selection by Frequency

Configurations