1

Low Tuning Voltage / Low Rs Silicon Hyperabrupt

Varactor Diode

Rev. V8

MA4ST1200 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

• Low Series Resistance at Low Tuning Voltages

• High Capacitance Ratio at Low Tuning Voltages

• Surface Mount Plastic Packages : SC-79, SOD-

323, SC-70 ( 3L )

• SPC Process for Superior C vs V Repeatability

• Lead-Free (RoHs Compliant) equivalents avail-

able with 260°C reflow compatibility

Description

M/A-COM’s MA4ST1200 series is a highly repeat-

able, UHCVD/ion-implanted, hyperabrupt silicon tun-

ing varactor in a cost effective surface mount pack-

age. This series of varactors is designed for high

capacitance ratio, and high Q for low battery voltage

operation. It is efficient for wide band tuning and low

phase noise application where the supply voltage is

limited to 5 volts or less. The Varactors are offered

as Singles in SC-79, and SOD-323 along with a

Common Cathode version offered in the SC-70, 3

Lead. These diodes are offered with standard Sn/Pb

plating , as well as with 100% matte Sn plating on

our RohS compliant equivalent devices.

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

SOD-323

SC-70 (3 lead)

SC-79

Part Number

RoHs Compliant Part Number

Configuration

Package

Package Cp

(pF)

Package Ls

(nH)

MAVR-001230-12790T

Single

SC-79

0.10

0.6

MAVR-001240-12790T

Single

SC-79

0.10

0.6

MA4ST1231-1141T

Single

SOD-323

0.11

1.2

MA4ST1241-1141T

Single

SOD-323

0.11

1.2

MA4ST1230CK-1146T

MA4ST1231CK-1146T

Common Cathode

SC-70 (3L)

0.12

1.3

MA4ST1240CK-1146T

MA4ST1241CK-1146T

Common Cathode

SC-70 (3L)

0.12

1.3

Specifications subject to change without prior notification