ALPHA SMV1245-011 Datasheet

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

Specifications subject to change without notice. 5/99A

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

SMV1245-011

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

Description

The SMV1245-011 is a surface mount varactor diode in the
SOD-323 plastic package. It is designed for very low series
resistance applications such as RF and microwave
VCOs.

Parameter Condition Frequency Min. Typ. Max. Unit

Breakdown V oltage (VBR)I

R

= 10 µA 26.00 V

Reverse Current (IR)V

R

= 10 V 50.00 nA

Capacitance (CT)C

T

@ 1 V, VR= 1 V, F = 1 MHz 4.40 5.40 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) 3.50 4.20

Series Resistance (RS)V

R

= 1 V, F = 500 MHz 2.00 Ω

Electrical Specifications at 25°C

Hyperabrupt Junction Tuning Varactor SMV1245-011

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

Specifications subject to change without notice. 5/99A

1

10

0 1 2 3 4 5 6 7 8 9 10 11 12

Capacitance (pF)

Varactor Voltage (V)

Capacitance vs. Voltage

0.090 (2.30 mm) MIN.

0.108 (2.70 mm) MAX.

0.045 (1.15 mm) MIN.

0.053 (1.35 mm) MAX.

0.050

(1.25 mm) MAX.

0.006

(0.15 mm) TYP.

0.008 (0.20 mm) NOM.

0.004 (0.10 mm) MAX.

0.010 (0.25 mm) MIN.

0.010

(0.25 mm) MIN.

0.016

(0.40 mm) MAX.

0.063 (1.60 mm) MIN.

0.071 (1.80 mm) MAX.

CATHODE

INDICATOR

21

Typical Performance Data

SOD-323

Capacitance vs. Voltage

VR(V) CT(pF)

0.0 7.37

0.5 5.84

1.0 4.93

1.5 4.28

2.0 3.79

2.5 3.40

3.0 3.06

3.5 2.76

4.0 2.51

4.5 2.28

5.0 2.09

5.5 1.92

6.0 1.78

6.5 1.66

7.0 1.55

7.5 1.46

8.0 1.38

8.5 1.32

9.0 1.26

9.5 1.20

10.0 1.16

10.5 1.12

11.0 1.08

11.5 1.05

12.0 1.02