Low - Voltage / Wide Band Si Hyperabrupt Varactors

MA4ST300

M/A-COM Division of AMP Incorporated

3 North America: Tel. (800) 366-2266, Fax (800) 618-8883 3 Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087

3 Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020

www.macom.com

AMP and Connecting at a Higher Level are trademarks.

Specifications subject to change without notice.

V4.00

100

300

500

700

900

0

123456

R e ve r s e V o l t a g e ( V )

10 0

10 00

0. 1

1

10

R e ve r s e V o lt a g e ( V )

M A 4S T 3 20

M A 4S T 3 40

M A 4S T 3 50

M A 4S T 3 30

1

10

100

0. 1

1

10

R e ver se V o l t ag e ( V )

M A 4S T 320

M A 4S T 330

M A 4S T 350

M A 4S T 340

Absolute Maximum Rating

1

Parameter

Ratings

Device Current

100 Ma

Power Dissipation

2, 3

650 mW

RF Input Power

+13 dBm

Junction Temperature

200°C

Storage Temperature

-65°C to +200°C

Thermal Resistance:

θ

Typical Performance Curves

Total Capacitance vs Reverse Voltage at 1 MHz

Nominal Change in Capacitance with Temperature

Nominal Q at 50 MHz vs Reverse Voltage

Electrical Specifications @ T

Breakdown Voltage @ I

Reverse Leakage Current @ V

Part No.

C

T

C

T

Capacitance Ratio

Q Factor

(pF)

(pF)

f=1 MHz, V

f=1 MHz, V

C

f=50 MHz, V

Min.

Nom.

Max.

Max.

Typ.

Min.

MA4ST320

48.0

58.0

63.0

19.0

3.2

300

MA4ST330

22.0

26.0

30.0

9.0

3.2

350

MA4ST340

15.0

18.5

21.0

6.5

3.2

350

MA4ST350

9.5

11.8

13.5

4.5

3.2

400

Ordering Information

These varactors are available in the three case styles shown.

When ordering, specify the desired case style by adding the case

designation (287 for SOT-23, 1146 for SOT-323, 1141 for

SOD-323) as a suffix to the model number.

For example,

MA4ST330-1141 specifies the MA4ST330 varactor in the

SOD-323 package. The MA4ST320 is available in the SOT-23

and SOD-323 packages only. The model number indicated is

for a single varactor. The MA4ST330, 340 and 350 are avail-

able in common cathode pairs in the SOT-23 package, and are

specified by adding “CK” to the end of the model number. For

example MA4ST330CK-287 specifies the MA4ST330 varactor

in common cathode pairs.