M A COM MA46609, MA46607, MA46605, MA46604, MA46601 Datasheet

GaAs Abrupt
Tuning V aractors

Features

●

Highest Q

●

Large Capacitance Variation with Voltage

●

Custom Tailored Designs Available on Request

Description

The MA46600 series of microwave tuning varactors is a
family of abrupt junction gallium arsenide devices featur­ing Q factors in excess of 8000. This series is specifically
designed for broadband high Q tuning performance (up
to 8000 at -4 volts and 50 MHz) from L through Ka band.
Characteristics such as high reliability, low leakage and
close capacitance tracking between diodes are typical of
these devices. Standard capacitance matching is ± 10%,
but closer matching is available upon request. All diode
types are available in a wide selection of ceramic pack­ages as well as in chip form.

Applications

The MA46600 series of tuning varactors can be used for
both broad and narrow band tuning through Ka-band.
Typical applications include solid state tuning of VCOs
using transistors or Gunns as well as voltage tunable
filters and amplifier circuits. The GaAs abrupt junction
tuning varactors offer the highest Q of any tuning varac­tors and are utilized in high frequency applications where
Q is premium.

MA46600 Series

V3.00

Case Styles

M/A-COM, Inc.

Specifications Subject to Change Without Notice.

North America: Tel. [phone] ■ Asia/Pacific: Tel. [phone] ■ Europe: Tel. [phone]

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1

GaAs Abrupt Junction Tuning Varactors MA46600 Series

V3.00

Electrical Specifications at 25°C

Reverse

Model Voltage C

6

1,2

T4

Q @ -4 Volts CT0/CTVB(pF)

Number (Volts) ± 10% (pF) (Typical) (Typical)

MA46600 30 0.3 8000 1.9
MA46601 30 0.4 7500 2.1
MA46602 30 0.5 7000 2.5
MA46603 30 0.6 6500 2.8
MA46604 30 0.8 6000 3.2
MA46605 30 1.0 5700 3.4
MA46607 30 1.5 5000 3.8
MA46609 30 2.2 4000 4.0

Notes:

1. Capacitance is measured at 1 MHz on a bridge which has been bal­anced with shielded test holders connected in place but open circuited.

2. All GaAs tuning varactors are available in any case style shown in this
bulletin as well as in chip form.When ordering, specify the desired
case by adding the case designation as a suffix to the model number,
i.e., MA46601-30. For example, a MA46601-30 specifies a 30 volt tun­ing diode in a case style 30 with a C
Q at -4 volts and 50 MHz ≥7500.The capacitance values and capaci­tance ratios are for case style 30.Other case styles or chips will have
slightly different values.

3. All junctions are abrupt i.e., y = 0.50 ± .03.

4. Total capacitance ratios will vary with case choice due to differences in
case capacitance (Cp). Figure 1 shows the ratio for the 30 case style.

5. Case parasitics (Cpand Ls) are given for most case styles.

6. Breakdown voltage (VB) is specified at -10 µA.

between .36 and .44 pF and a

T14

Absolute Maximum Ratings at +25°C

Parameter

Temperature:
Operating -65°C to + 175°C
Storage -65°C to + 200°C
Voltage See Breakdown Voltage

Typical Performance Curve

CAPACITANCE CHANGE RATIOS FOR GaAs

TUNING VARACTORS IN CASE STYLE 30

10

9
8

7
6
5

4

(RATIO)

3

TV

/C

TO

C

2

1

1 2 3 4 6 8 10 20 30

UNPACKAGED CHIP

C

= 4.0pF

TO

C

= 2.0pF

TO

C

= 1.0pF

TO

C

= 0.5pF

TO

VOLTAGE (VOLTS)

Power Dissipation Cj < 1.0 pF max. @ 50 mW

(derate linearly to zero at 200°C)

Cj ≥ 1.0 pF min.@ 100 mW

Ratio

1,2

Environmental Ratings

Method Levels

Temperature, Storage 1031 See Maximum Ratings
Temperature, Cycling 1051 5 cycles, -65 to + 150 C
Shock 2016 500 g’s
Vibration 2056 15 g’s
Constant Acceleration 2006 20,000 g’s
Moisture Resistance 1021 10 days

2

Specifications Subject to Change Without Notice.

North America: Tel. [phone] ■ Asia/Pacific: Tel. [phone] ■ Europe: Tel. [phone]

Fax [phone] Fax [phone] Fax [phone]

M/A-COM, Inc.