Hyperabrupt Tuning Varactors

SMV1247–SMV1255

2

Alpha Industries, Inc. [781] 935-5150

• Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com

Specifications subject to change without notice. 1/00A

0.1

1.0

10.0

100.0

6.0

8.0

4.0

Reverse Voltage (V)

Capacitance vs. Reverse Voltage

2.0

0

SMV1253

SMV1251

SMV1249

SMV1255

SMV1248

SMV1247

-3

-2

-1

0

1

2

3

-40

-20

0

20

40

60

80

Temperature (˚C)

Relative Capacitance Change

vs. Temperature

-50

-25

0

25

50

75

100

Temperature (˚C)

Relative Series Resistance Change

vs. Temperature @ 500 MHz

-25

-20

-10

-15

-5

0

5

10

15

0

1.0

2.0

3.0

4.0

3.5

2.5

1.5

0.5

Reverse Voltage (V)

Series Resistance vs. Reverse Voltage

@ 500 MHz

01

2

3

4

5

SMV1247

SMV1251

SMV1253

SMV1255

SMV1248

SMV1249

Typical Performance Data

Q

Part

@ 0.3 V

@ 4.7 V

@ 1 V

@ 3 V

@ 3 V

Number

(pF)

(pF)

(pF)

(pF)

(Ratio)

(Ratio)

(

Ω

Ω)

50 MHz

Min.

Typ.

Typ.

Max.

Typ.

Typ.

Min.

Typ.

Typ.

Max.

Typ.

SMV1247

6.5

7

0.7

0.78

4.4

0.95

9.5

10.0

4.6

2.0

1500

SMV1248

15.0

17

1.5

1.70

12.3

2.60

10.8

12.0

4.7

1.8

700

SMV1249

28.0

31

2.6

2.80

18.2

3.40

11.0

12.1

5.3

1.5

600

SMV1251

38.0

42

3.4

3.80

28.1

5.80

11.0

12.2

4.8

1.3

400

SMV1253

48.0

53

4.3

4.80

37.0

7.80

11.0

12.3

4.7

1.2

350

SMV1255

58.0

64

5.2

5.80

43.3

8.50

11.0

12.3

5.1

1.0

350

Electrical Specifications at 25°C