MA4ST1241-1279T - M/A-COM Technology Solutions, Inc.

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 Tuning Voltage/Low Rs

Silicon Hyperabrupt Varactor Diode V3

MA4ST1200 Series

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 ava ilable with

260°C reflow compatibility

Description

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

UHCVD/ion-implanted, hyperabrupt silicon tuning varactor in a

cost effective surface mount package. 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 @ TA=+25 °C

(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

SOD-323

SC-70 (3 lead)

SC-79

Part Number RoHs Compliant Part Number Configuration Package Package Cp

(pF) Package Ls

(nH)

MA4ST1231-1279T Single SC-79 0.10 0.6

MA4ST1241-1279T Single SC-79 0.10 0.6

MA4ST1230-1141T MA4ST1231-1141T Single SOD-323 0.11 1.2

MA4ST1240-1141T 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

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 Tuning Voltage/Low Rs

Silicon Hyperabrupt Varactor Diode V3

MA4ST1200 Series

Electrical Specifications @ TA = +25 °C

Breakdown Voltage @ IR = 10

A, Vb = 12 V Minimum

Reverse Leakage Current @ VR =10V, IR = 100 nA Maximum

1 The prefix defines package style, configuration and packaging information. Contact representative for complete part identification.

2 Capacitance @ 1 MHz

3 Series Resistance @ 100 MHz

Typical Capacitance vs. Biasin g Voltage

Part Number

Base

RoHs Compliant

Part Number Base1

(pF)2 Capacitance

Ratio Rs3

(Ohm)

VR = 0.5V VR = 4.0V Ct0.5/Ct4.0 VR = 2.0 V

Typ. Min. Nom. Max. Typ. Typ. Typ. Max.

MA4ST1230 MA4ST1231 10.1 4.2 4.7 5.2 2.75 3.67 0.40 0.70

MA4ST1240 MA4ST1241 7.1 3.0 3.4 3.8 2.05 3.46 0.40 0.70

VR = 2.0V

Typical Capacitance Change vs. Temperature

-4%

-2%

-40 -15 10 35 60 85

Temperature (degree C)

% of Capacitance Change

(relative to 25 C)

012345

Biasing Vol tage (V)

Capacitance (pF

)

MA4ST1230/1231

MA4ST1240/1241

0.00

0.20

0.40

0.60

0.80

1.00

0.00.51.01.52.02.53.0

Biasing Voltage (V)

Series Resistance (Ohm)

MA4ST1240/1241

MA4ST1230/1231

Typical Rs vs Biasing Voltage3

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 Tuning Voltage/Low Rs

Silicon Hyperabrupt Varactor Diode V3

MA4ST1200 Series

Typical Capacitance Values

Spice Model

VR (V) MA4ST1230 MA4ST1240

Ct (pF) Ct (pF)

0.5 10.170 7.016

1.0 7.839 5.424

1.5 6.062 4.213

2.0 4.840 3.370

2.5 4.053 2.829

3.0 3.527 2.466

3.5 3.155 2.208

4.0 2.877 2.016

4.5 2.661 1.865

5.0 2.488 1.746

Part Number N CJO

(pF) Vj

(V) M

MA4ST1230 1.1 12.7 3.136 2.6

MA4ST1240 1.1 8.65 3.170 2.6

Intrin si c Di ode Model

Cj0=Cj0

Vj=Vj

Fc=0.5

BV=20 V

M=M

Parasitic Cp & Ls

Are per Above Table

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 Tuning Voltage/Low Rs

Silicon Hyperabrupt Varactor Diode V3

MA4ST1200 Series

Case Styles

SC-70, 3 Lead

Case Style 1146

INCHES MILLIMETERS

DIM. MIN. MAX. MIN. MAX.

A 0.071 0.087 1.80 2.20

B 0.045 0.053 1.15 1.35

C 0.071 0.094 1.80 2.40

D 0.047 0.057 1.19 1.45

E 0.010 0.016 0.25 0.41

F 0.031 0.039 0.80 1.00

G 0.000 0.004 0.00 0.10

H 0.004 0.10

J 0.004 0.10

0.007

0.010 0.18

0.25

SOD-323

Case Style 1141

INCHES MILLIMETERS

DIM. MIN. MAX. MIN. MAX.

A ⎯ 0.043 ⎯ 1.1

B ⎯ 0.004 ⎯ 0.1

C ⎯ 0.008 ⎯ 0.2

D 0.010 0.016 0.25 0.4

E 0.003 0.006 0.08 0.15

F 0.063 0.075 1.6 1.9

G 0.045 0.057 1.15 1.45

H 0.091 0.106 2.3 2.7

10°MAX.

SC-79

Case Style 1279

INCHES MILLIMETERS

DIM. MIN. MAX. MIN. MAX.

A 0.020 0.028 0.50 0.71

B 0.003 0.008 0.08 0.20

C 0.006 0.010 0.15 0.25

D 0.010 0.014 0.25 0.36

E 0.059 0.067 0.08 0.15

F 0.043 0.051 1.50 1.30

G 0.011 0.012 0.28 0.30

H 0.037

typical 0.043 0.94 1.09

E F

Cathode

Mark

Seating

Plane

10° Max

G H

Topview

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 Tuning Voltage/Low Rs

Silicon Hyperabrupt Varactor Diode V3

MA4ST1200 Series

Mounting Information

The illustration indicates the recommended

mounting pad configuration for the

SC-79, SOT-323 and SOD-323 packages. 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.

SOT-323

0.030

0.80

0.030

0.80

0.030

0.80

0.075

1.9

0.030

0.80

inches

Dimenstions:

SOD-323

0.030

0.80

.090

2.2

0.030

0.80

inches

Dimenstions:

0.030

0.80

SC-79

0.020

0.50

0.053

1.35 inches

Dimenstions:

0.020

0.50