M/A-COM, Inc.

North America:

Tel. (800) 366-2266

s

Asia/Pacific: Tel. +81 (03) 3226-1671

s

Europe: Tel.

+44 (1344) 869 595

Fax (800) 618-8883

Fax +81 (03) 3226-1451

Fax +44 (1344) 300 020

2

Specifications Subject to Change Without Notice.

V3.00

Step Recovery Diodes

MA43000, MA44600, MA44700 Series

Snap Varactors

Notes:

1. When ordering, specify the desired case style by adding the case des-

ignation as a suffix to the model number. Case styles for the MA44600

series are 30, 91 and 93. To order in chip form, add the suffix “134” to

the model number. The nominal chip size for the MA44600 series is

15 mils.

Junction3

Minimum2

Capacitance

Minimum

Transition Time T

S

4

Reverse

Range (C

Lifetime

(ps)

Model1

Voltage V

R

Min./Max.

10 mA/6 mA

Number

(Volts)

(pF)

TI (ns)

Nominal

Max.

MA44621A

20

0.2 / 0.3

7

50

100

MA44621B

20

0.3 / 0.4

7

50

100

MA44621C

20

0.4 / 0.5

7

50

100

MA44622A

20

0.5 / 0.7

7

50

100

MA44622B

20

0.7 / 0.9

7

50

100

MA44631A

30

0.3 / 0.5

8

70

100

MA44631B

30

0.5 / 0.7

8

70

100

MA44631C

30

0.7 / 0.9

8

70

100

MA44641A

40

0.4 / 0.6

12

90

150

MA44641B

40

0.6 / 0.8

12

90

150

MA44641C

40

0.8 / 1.1

12

90

150

MA44652A

50

0.5 / 0.7

15

150

200

MA44652B

50

0.7 / 0.9

15

150

200

MA44652C

50

0.9 / 1.1

15

150

200

MA44663A

60

0.7 / 0.9

20

250

300

MA44663B

60

0.9 / 1.1

20

250

300

MA44663C

60

1.1 / 1.5

20

250

300

MA44663D

60

1.5 / 2.0

20

250

300

2. Reverse voltage (V

3. Junction capacitance is measured at a reverse voltage of 6 volts and a

frequency of 1 MHz.

4. Transition time is measured between 20% and 80% points on the volt-

age recovery trace. Test conditions are +10 mA and -10 volts.

30

91

93

134