1
Surface Mount Low Power Step Recovery Diodes M/A-COM Products
Rev. V6
MA44700 Series
• North America Tel: 800.366.2266 / Fax: 978.366.2266
• Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300
• Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298
Visit www.macom.com for additional data sheets and product information.
MA-COM Technical Solutions and its affiliates reserve the right to make changes to the
product(s) or information contained herein without notice.
ADVANCED: Data Sheets contain information regarding a product MA-COM Technical Solutions is
considering for development. Performance is based on target specifications, simulated results, and/
or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product MA-COM Technical Solutions
has under development. Performance is based on engineering tests. Specifications are typical.
Mechanical outline has been fixed. Engineering samples and/or test data may be available. Commit-
ment to produce in volume is not guaranteed.
Features
• Surface Mount Packages (SOT-23,SC-79)
• Low transition times
• SPC Process for Superior C-V Repeatability
• Tape and Reel Packaging
• Designed for Commercial Wireless Application s
• Also Offering RoHS Compliant Equivalent Parts
Description
The MA44700 series of Step Recovery diodes is
designed for use in low power multipliers with output
frequencies of up to 5 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 cur-
rentsource 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 gen-
erators. They are also useful as efficient moderate
power X2-X4 multipliers.
Applications
The MA44700 series step recovery are useful for
surface mount low power applications.
Absolute Maximum Ratings 1,2
@ TA=+25 °C (Unless Otherwise Noted)
1. Operation of this device above any one of these parameters
may cause permanent damage.
2. Please refer to application note M538 for surface mounting
instructions
Parameter Absolute Maximum
Operating Temperature -65 °C to +125 °C
Storage Temperature -65 °C to +125 °C
Reverse Voltage 30V
Forward Bias Current 50 mA
Power Dissipation 250 mW
Part Number
(non-RoHS)1 RoHS Compliant
Part Numbers1
CT2 Reverse
Voltage Nominal
Carrier Transition
Time Nominal
Input Nominal
Output
(pF) (V)
(nS) (pS) (GHz)
f=1 MHz,
VR=6.0 V Ir =10 uA
Min. Max. Min. Typical Max
MA44767-287T MAVR-044767-0287AT
3.0 4.5 30 250-500 600 0.05-5 0.5-1.5
MA44768-287T MAVR-044768-0287AT
MAVR-044768-12790T 1.6 2.4 30 75-225 250 0.1-1 0.5-2.5
MA44769-287T MA144769-287T
MAVR-044769-12790T 0.8 1.2 30 20-50 150 0.1-1 1-5
(GHz)
1. The prefix defines package style, configuration and packaging information. Contact representative for complete part identification.
2. Capacitance @ 1 MHz
Typi ca l Capa citance vs. Bias (V) fre q =1MHz
0
1
2
3
4
5
6
7
8
0 5 10 15 20 25 30
Bias(V)
Capacitance (pF)
MA44768
MA44769
MA44767
2
Surface Mount Low Power Step Recovery Diodes M/A-COM Products
Rev. V6
MA44700 Series
• North America Tel: 800.366.2266 / Fax: 978.366.2266
• Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300
• Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298
Visit www.macom.com for additional data sheets and product information.
MA-COM Technical Solutions and its affiliates reserve the right to make changes to the
product(s) or information contained herein without notice.
ADVANCED: Data Sheets contain information regarding a product MA-COM Technical Solutions is
considering for development. Performance is based on target specifications, simulated results, and/
or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product MA-COM Technical Solutions
has under development. Performance is based on engineering tests. Specifications are typical.
Mechanical outline has been fixed. Engineering samples and/or test data may be available. Commit-
ment to produce in volume is not guaranteed.
Case Styles
F
D
H
J
A
G
L
C
E
B
K
N
M
INCHES MILLIMETERS
DIM. MIN. MAX. MIN. MAX.
A ⎯ 0.048 ⎯ 1.22
B ⎯ 0.008 ⎯ 0.20
C ⎯ 0.040 ⎯ 1.00
D 0.013 0.020 0.35 0.50
E 0.003 0.006 0.08 0.15
F 0.110 0.119 2.80 3.00
G 0.047 0.056 1.20 1.40
H 0.037 typical 0.95 typical
J 0.075 typical 1.90 typical
K ⎯ 0.103 ⎯ 2.60
L ⎯ 0.024 ⎯ 0.60
DIM. GRADIENT
M 10° max.
N 2° . . .30°
SOT-23 (Case Style 287)
SC-79 (Case Style 1279)
INCHES MILLIMETERS
DIM. MIN. MAX. MIN. MAX.
A 0.020 0.028 0.50 0.71
B 0.003 0.008 0.08 0.20
C 0.006 0.010 0.15 0.25
D 0.010 0.014 0.25 0.36
E 0.059 0.067 0.08 0.15
F 0.043 0.051 1.50 1.30
G 0.011 0.012 0.28 0.30
H 0.037
typical 0.043 0.94 1.09
D
E F
Cathode
Mark
B
C
Seating
Plane
10° Max
A
10° Max
G H
Topview
SOT-23 (Case Style 287)
SC-79 (Case Style 1279)
3
Surface Mount Low Power Step Recovery Diodes M/A-COM Products
Rev. V6
MA44700 Series
• North America Tel: 800.366.2266 / Fax: 978.366.2266
• Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300
• Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298
Visit www.macom.com for additional data sheets and product information.
MA-COM Technical Solutions and its affiliates reserve the right to make changes to the
product(s) or information contained herein without notice.
ADVANCED: Data Sheets contain information regarding a product MA-COM Technical Solutions is
considering for development. Performance is based on target specifications, simulated results, and/
or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product MA-COM Technical Solutions
has under development. Performance is based on engineering tests. Specifications are typical.
Mechanical outline has been fixed. Engineering samples and/or test data may be available. Commit-
ment to produce in volume is not guaranteed.
Mounting Information
The illustration indicates the recommended mount-
ing pad configuration for the SOT-23 and SC-79
packages. Solder paste containing flux should b e
screened onto the pads to a thickness of 0.005-
0.007 inches. The plasti c package is placed in posi-
tion, firmly adhering to the solder paste.
Permanent attachment is performed by a reflow sol-
dering procedure during which the tab temperature
does not exceed +275 °C and the body temperature
does not exceed +250 °C, for stand ard models and
+260 °C for the RoHS compliant devices.
Please refer to Application Note M538 for surface
mounting instructions. SC-79
0.020
0.50
0.053
1.35 inches
mm
Dimenstions:
0.020
0.50
0.75
1.9
.037
0.95
.035
0.90
.090
2.2
.030
0.80
inches
mm
Dimenstions:
min.
min.
SOT-23
Package Configuration
SOT-23 (Case Style 287) SC-79 (Case Style 1279)
