Surface Mount

Abrupt Tuning Varactors

MA45430 Series

M/A-COM, Inc.

North America:

Tel. (800) 366-2266

s

Asia/Pacific: Tel. +81 3 3263 8761

s

Europe: Tel. +44 (1344) 869 595

Fax (800) 618-8883

Fax +81 3 3263 8769

Fax +44 (1344) 300 020

1

Specifications Subject to Change Without Notice.

V3.00

Features

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Surface Mount Package

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Low Cost

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High Quality Factor

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Tape and Reel Packaging Available

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SPC Controlled Process for Superior C-V Repeatability

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Available as Singles and Common Cathode Pairs

Description

The MA45430 series are abrupt junction silicon tuning

varactors in the SOT-23 surface mount package. These

thermal oxide passivated diodes feature high capacitance

ratio and quality factor. They are well suited for tuning in

the HF to UHF frequency bands. The standard capaci-

tance tolerance is ±10%, with tighter tolerances available.

Capacitance matching at one or more bias voltages is

also available.

Applications

The MA45430 series tuning varactor is useful for tuning

applications in the HF through UHF ranges. Applications

include VCOs and voltage tuned filters in radios, cable

TV tuners and test instruments where low cost and excel-

lent lot-to-lot repeatability are critical.

Ordering Information

The part numbers shown are for single diodes. When

ordering diodes in common cathode pairs add suffix

“CK.” For example, MA45436CK specifies model number

MA45436 as a common cathode pair. To order parts on

tape and reel add suffix T/R to the end of the part num-

ber. i.e. MA45436CK - T/R.

Mounting Information

The diagram below indicates the recommended mount-

ing pad configuration for the SOT-23 package. Solder

paste containing flux should be screened onto the pads

to a thickness of 0.005 inches. The SOT-23 device is

placed in position, firmly adhering to the solder paste.

Permanent attachment is performed by a reflow soldering

procedure. The tab temperature must not exceed 275°C

and the body temperature must not exceed 250°C.

SOT-23

Configurations

TOP VIEW

(SINGLE)

(COMMON CATHODE PAIR)

Absolute Maximum Ratings at 25°C

Note:

1. At 25

Parameter

Absolute Maximum

Reverse Voltage

30 V

Forward Current

50 mA

250 mW

Junction Operating Temperature

-55°C to +150°C

Storage Temperature

-55°C to +150°C