MA44631C91中文资料

V3.00

Step Recovery Diodes

MA43000,MA44600,

MA44700 Series

Features

q Low Transition Times q Tight Capacitance Ranges

q

High Voltage and Low Thermal Resistance for Higher Input Power

q

Surface Mount Package Available (SOT-23)

Description

The MA44600 series of Step Recovery diodes is designed for use in low and moderate power multipliers with out-put frequencies of up to 20 GHz. These Step Recovery diodes generate harmonics by storing a charge as the diode is driven to forward conductance by the positive voltage of the input signal. When the signal reverses polarity, this charge is extracted. The Step Recovery diode will appear as a low impedance current source until all the charge is extracted, then it will “snap” to a higher imped-ance. This causes a voltage pulse to form in the impulse circuit of the multiplier. Step Recovery diodes make excellent high order multipliers such as comb generators.They are also useful as efficient moderate power X2- X4multipliers.

Applications

High Order Narrow Band Moderate Power Multipliers (MA44600 series)

Comb Generators (MA43592, MA43543)

High Power Circuit Tested Multiplier (MA43000 Series)

Surface Mount Low Power Multipliers (MA44700 Series)

V3.00 Electrical Specifications @ 25°C

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.

2.Reverse voltage (V R) is measured at a reverse bias current of 10 μA.

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. Case Styles (See appendix for complete dimensions)

309193134

Notes:

1.The standard case styles are indicated for each model number.Other case styles are available.Consult the factory for information.

High Power Circuit Tested Step Recovery Diodes

Min./Max.3Junction Min./Max.Maximum Maximum Capacitance

Lifetime,T L Snap Time,T S Thermal Model C j 10 mA/6 mA

-10V/10 mA

Resistance,jc

Number (pF)(ns)(ps)

(C/W)

MA43000 3 - 4.50250 - 50060012MA43002 1.60 - 2.4075 - 22525025MA43004

0.45 - 0.85

20 - 50

150

45

Surface Mount Step Recovery Diodes (SOT-23)

2.Reverse voltage is measured at reverse bias current of 10 μA.

3.Junction capacitance is measured at a reverse bias of 6 volts and a frequency of 1 MHz.

Case styles (See appendix for complete dimensions)

91103SOT -23 (High Profile)

Notes:

1.The standard case styles are indicated for each model number.For other available case styles, consult the factory.

2.This is an operable output frequency range and does not imply instan-taneous bandwidth.

Min./Max.4Maximum 2Min./Max.3Junction Min./Max.Maximum Maximum Nominal 2Input Reverse Capacitance

Carrier Snap Time,

T S Thermal Output Model Case 1Power Voltage V R Cj Lifetime,T L

-10V/10 mA

Resistance Frequency Number Style (Watts)

(Volts)(pF)

(ps)(ps)

jc(C/W)

(GHz)MA4359230 1.025 - 400.2 - 0.309 - 279070 1 - 12MA43543

93

1.5

20 - 50

0.2 - 0.55

10 - 25

60

125

2 - 20

Absolute Maximum Ratings @ 25°C

Environmental Performance

The MA44600 and MA43000 series of diodes in ceramic packages are capable of meeting the tests dictated by the methods and procedures of the latest revisions of MIL-S-19500, MIL-STD-202 and MIL-STD-750 which specify mechanical, electrical, thermal and other environmental tests common to military semiconductor products.

High Order Step Recovery Diode Varactors for Use in Comb Generation

Case Styles (See appendix for complete dimensions)

3.Breakdown voltage is measured at a reverse bias voltage of 10 μA.

4.Junction capacitance is measured at a reverse bias voltage of 6 volts and a frequency of 1 MHz.

3093