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M/A-COM, Inc.
Nor th America: Tel. (800) 366-2266 ■Asia/Pacific: Tel. +81 (03) 3226-1671 ■Europe: Tel. +44 (1344) 869 595
Fax (800) 618-8883 Fax +81 (03) 3226-1451 Fax +44 (1344) 300 020
2Specifications Subject to Change Without Notice.
V3.00
Step Recovery Diodes MA43000, MA44600, MA44700 Series
Electrical Specifications @ 25°C
Snap V aractors
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
Minimum2Capacitance Minimum T ransition Time TS4
Reverse Range (Cj) Lifetime (ps)
Model1Voltage VRMin./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 (VR) 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 recover y trace.Test conditions are +10 mA and -10 volts.
Case Styles (See appendix for complete dimensions)
30 91 93 134