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Step Recovery Diodes
Features
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MA43000, MA44600, MA44700 Series
V3.00
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Low Transition Times Tight Capacitance Ranges High Voltage and Low Thermal Resistance for Higher Input Power 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 output 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 impedance. 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- X4 multipliers.
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)
Specifications Subject to Change Without Notice.
M/A-COM, Inc.
North America: Tel. (800) 366-2266 Fax (800) 618-8883
s
1
Asia/Pacific: Tel. +81 (03) 3226-1671 Fax +81 (03) 3226-1451
s
Europe: Tel. +44 (1344) 869 595 Fax +44 (1344) 300 020
Step Recovery Diodes
MA43000, MA44600, MA44700 Series
V3.00
Electrical Specifications @ 25C Snap Varactors
Minimum2 Reverse Voltage VR (Volts) 20 20 20 20 20 30 30 30 40 40 40 50 50 50 60 60 60 60 Junction3 Capacitance Range (Cj) Min./Max. (pF) 0.2 / 0.3 0.3 / 0.4 0.4 / 0.5 0.5 / 0.7 0.7 / 0.9 0.3 / 0.5 0.5 / 0.7 0.7 / 0.9 0.4 / 0.6 0.6 / 0.8 0.8 / 1.1 0.5 / 0.7 0.7 / 0.9 0.9 / 1.1 0.7 / 0.9 0.9 / 1.1 1.1 / 1.5 1.5 / 2.0 Minimum Lifetime 10 mA/6 mA TI (ns) 7 7 7 7 7 8 8 8 12 12 12 15 15 15 20 20 20 20 Transition Time TS4 (ps) Nominal 50 50 50 50 50 70 70 70 90 90 90 150 150 150 250 250 250 250 Max. 100 100 100 100 100 100 100 100 150 150 150 200 200 200 300 300 300 300
Model1 Number MA44621A MA44621B MA44621C MA44622A MA44622B MA44631A MA44631B MA44631C MA44641A MA44641B MA44641C MA44652A MA44652B MA44652C MA44663A MA44663B MA44663C MA44663D
Notes: 1. When ordering, specify the desired case style by adding the case designation 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 (VR) is measured at a reverse bias current of 10 A. 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 voltage recovery trace. Test conditions are +10 mA and -10 volts.
Case Styles (See appendix for complete dimensions)
30
91
93
134
Specifications Subject to Change Without Notice.
2
North America: Tel. (800) 366-2266 Fax (800) 618-8883
s
M/A-COM, Inc.
Asia/Pacific: Tel. +81 (03) 3226-1671 Fax +81 (03) 3226-1451
s
Europe: Tel. +44 (1344) 869 595 Fax +44 (1344) 300 020
Step Recovery Diodes Electrical Specifications @ 25 C (Cont'd)
High Power Circuit Tested Step Recovery Diodes
MA43000, MA44600, MA44700 Series
V3.00
Model Number MA43000 MA43002 MA43004
Case1 Style 103 91 91
Minimum Output Power (Watts) 4.0 1.5 0.3
Input Frequency (GHz) 0.333 2.000 3.300
Output Frequency (GHz) 2.0 6.0 13.0
Maximum Input Power (Watts) 15 5 2
Min./Max.2 Reverse Voltage VR (Volts) 85 - 105 45 - 70 30 - 45
Model Number MA43000 MA43002 MA43004
Min./Max.3 Junction Capacitance Cj (pF) 3 - 4.50 1.60 - 2.40 0.45 - 0.85
Min./Max. Lifetime, TL 10 mA/6 mA (ns) 250 - 500 75 - 225 20 - 50
Maximum Snap Time, TS -10V/10 mA (ps) 600 250 150
Maximum Thermal Resistance, jc (C/W) 12 25 45
Surface Mount Step Recovery Diodes (SOT-23)
Min./Max. Total Capacitance (pF) Model Number MA44767 MA44768 MA44769 f = 1 MHz VR = 6 V 3 - 4.5 1.6 - 2.4 0.8 -1.2 30V Minimum Reverse Voltage VR (Volts) IR = 10A Suggested Nominal Carrier Lifetime TL (ns) 250 - 500 75 - 225 20 - 50 Maximum Transition Time TS (psec) 600 250 150 Nominal Input Frequency (GHz) 0.05 - 0.5 0.1 - 1 0.1 - 1 Nominal Output Frequency (GHz) 0.5 - 1.5 0.5 - 2.5 1-5
Notes: 1. The standard case styles are indicated for each model number. Other case styles are available. Consult the factory for information.
2. Reverse voltage is measured at reverse bias current of 10 A. 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)
91
103
SOT-23 (High Profile)
Specifications Subject to Change Without Notice.
M/A-COM, Inc.
North America: Tel. (800) 366-2266 Fax (800) 618-8883
s
3
Asia/Pacific: Tel. +81 (03) 3226-1671 Fax +81 (03) 3226-1451
s
Europe: Tel. +44 (1344) 869 595 Fax +44 (1344) 300 020
Step Recovery Diodes Electrical Specifications @ 25 C (Cont'd)
High Order Step Recovery Diode Varactors for Use in Comb Generation
Maximum2 Input Power (Watts) 1.0 1.5 Min./Max.3 Reverse Voltage VR (Volts) 25 - 40 20 - 50 Min./Max.4 Junction Capacitance Cj (pF) 0.2 - 0.30 0.2 - 0.55
MA43000, MA44600, MA44700 Series
V3.00
Model Number MA43592 MA43543
Case1 Style 30 93
Min./Max. Carrier Lifetime, TL (ps) 9 - 27 10 - 25
Maximum Snap Time, TS -10V/10 mA (ps) 90 60
Maximum Thermal Resistance jc(C/W) 70 125
Nominal2 Output Frequency (GHz) 1 - 12 2 - 20
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 instantaneous bandwidth.
3. Breakdown voltage is measured at a reverse bias voltage of 10 A. 4. Junction capacitance is measured at a reverse bias voltage of 6 volts and a frequency of 1 MHz.
Case Styles (See appendix for complete dimensions)
30
93
Absolute Maximum Ratings @ 25C
Parameter Temperature Range Operating Range -65C to +200C -65C to +125C (SOT-23 only) -65C to +200C -65C to +125C (SOT-23 only) Absolute Maximum
Storage Range
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-S19500, MIL-STD-202 and MIL-STD-750 which specify mechanical, electrical, thermal and other environmental tests common to military semiconductor products.
Specifications Subject to Change Without Notice.
4
North America: Tel. (800) 366-2266 Fax (800) 618-8883
s
M/A-COM, Inc.
Asia/Pacific: Tel. +81 (03) 3226-1671 Fax +81 (03) 3226-1451
s
Europe: Tel. +44 (1344) 869 595 Fax +44 (1344) 300 020

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