ALPHA SMV1135-004, SMV1135-011 Datasheet

Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com 1

Specifications subject to change without notice. 6/01A

Hyperabrupt Junction Tuning Varactor

Features

■ High Tuning Ratio

■ Low Series Resistance

■ SOD-323 Package

■ Designed for High Volume, Low Cost

Applications

■ Available in Tape and Reel Packaging

SMV1135 Series

Description

The SMV1135-011 is a surface mount varactor diode in the
SOD-323 plastic package. It is designed for very high
capacitance tuning ratio while having low series resistance,
which makes this device especially attractive for wideband
VCO applications.

Characteristic Value

Forward Current (IF) 20 mA
Power Dissipation (PD) 250 mW
Storage Temperature (TST) -55°C to +150°C
Operating Temperature (TOP) -55°C to +125°C

Absolute Maximum Ratings

Parameter Condition Min. Typ. Max. Unit

Reverse Current (IR)V

R

= 21 V 20.00 nA

Capacitance (CT)C

T

@ 1 V, VR= 1 V, F = 1 MHz 8.20 10.00 pF

Capacitance Ratio (CTR)C

T

(1 V)/CT(3 V) 1.47 1.76

Capacitance Ratio (CTR)C

T

(1 V)/CT(9 V) 3.70 4.50

Series Resistance (RS)V

R

= 1 V, F = 500 MHz 1.20 Ω

Breakdown V oltage (VBR)I

R

= 10 µA 28.00 V

Electrical Specifications at 25°C

Single Common Cathode

SOD-323 SOT-23

SMV1135-011 SMV1135-004

Hyperabrupt Junction Tuning Varactor SMV1135 Series

2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com

Specifications subject to change without notice. 6/01A

Series Resistance vs. Voltage

0.6

0.7

0.8

0.9

1.0

1.1

1.2

1.3

1.4

0 5 10 15 20

Voltage (V)

R

S

(Ω)

Varactor Voltage (V)

Capacitance vs. Voltage

Capacitance (pF)

0

2

4

8

6

10

12

0 5 10 15 20

Relative Capacitance Change

vs. Temperature

Temperature (˚C)

Percentage Change (%)

-10

-5

0

5

10

-40 -20 0 20 40 60 80

3 V

20 V

Relative Series Resistance

Change vs. Temperature

Temperature (˚C)

Percentage Change (%)

-10

-5

0

5

10

-40 -20 0 20 40 60 80

Typical Performance Data

VR(V) CT(pF)

0.5 10.34

1.0 8.69

2.5 5.98

3.0 5.38

6.0 3.11

10.0 1.92

20.0 1.17

Capacitance vs. Voltage