Multiplier Devices: MSD 700 Series
Step Recovery Diodes
Description
The MicroMetrics MSD 700 series
Step Recovery diodes are epitaxial
silicon varactors which provide high
output power and efficiencies in
harmonic generator applications.
Strict material and process controls
result in high reproducibility. A unique
silicon dioxide passivation process
assures greater stability, reliability and
low leakage currents at high temperatures.
Diodes are available in various capaci-
tance ranges for each of the 4 voltage
ratings. These diodes represent the
lowest transition times (snap time)
available for each voltage rating.
Unless otherwise specified, capaci-
tance will be within the range shown
above for each type. A capacitance
tolerance of ±10% is available at an
additional charge. Diodes can be
optimized for custom electrical or
mechanical specifications. Custom
parameters for capacitance, voltage,
transition time, series resistance, etc.
are available upon request.
Applications
The MSD 700 series Step Recovery
diodes are used as harmonic genera-
tors for all orders of multiplication, x 2
through x 20, for both narrow and
wide bandwidths.
Applications include local oscillators,
voltage controlled oscillators,
frequency synthesizers and up con-
verters. They are also used in comb
generators to generate a broad
frequency spectrum and in high
speed pulse shaping circuits.
36
Typical Perfor mance
Multiplier Devices
.1
+.5 +.3 0 -1 -3 -6 -10 -20 -40 -100
.2
.4
.6
1
2
4
6
10
20
40
100
CAPACITANCE
(pF)
Square Law
A-Mode
Step Recovery
APPLIED VOLTAGE
(V)
100
10
1.0
0.1 1.0 10
INPUT FREQUENCY, (F)
(GHz)
MINIMUM MINORITY CARRIER
LIFETIME, τ (nS)
τ > 10
Fin
INPUT
High Pass
Filter OUTPUT
Matching
Section
Bias Network Impulse
Generator
Output
Filter
Output
Matching
Section
Idler Circuit
SRD
Typical SRD Multiplier
Features
• Wide Selection of Tightend
Capacitance Ranges
•Low Transition Times
• High Efficiencies
Packaging
•Chip, Glass, Ceramic, Surface Mount,
Beam Lead
MicroMetrics, Inc. 136 Harvey Road, Building C, Londonderry, NH 03053
Voice: 603-641-3800, Fax: 603-641-3500, Internet: www.micrometrics.com, E-mail: serv@micrometrics.com
Multiplier Devices: MSD 700 Series
37
Notes:
1. Junction Capacitance is measured at 1 MHz on Hewlett Packard model 4277A LCZ meter.
2. Series Resistance is measured using a Hewlett Packard model 4191A impedance analyzer.
3. Thermal Resistance is measured using pulsed conditions while measuring forward voltage drop across the diode
mounted in an infinite heat sink.
4. All specifications are measured in case style CS37.
Storage Temperature -65°C to + 200°C
Operating Temperature -55°C to + 150°C
Minimum Voltage Breakdown 15, 20, 30 and 40 V at 10 µA
Maximum Ratings
Junction Minimum Minimum Maximum Maximum Maximum
Capacitance, Cj1Breakdown Carrier Transition Series Thermal
@ -6V, 1MHz Voltage, VbLifetime,TlTime, TtResistance, Rs2Resistance3
(pF) @ 10 µA Ir6 mA, lf= 10 mA (pS) lf= 25 mA ΘCjPart
(V) (nS) Rs(Ohms) °C/W Number
0.2 - 0.4 15 8 60 1.20 125 MSD700
0.4 - 0.6 15 8 60 1.00 100 MSD701
0.6 - 0.8 15 8 60 0.70 100 MSD702
0.8 - 1.0 15 8 60 0.50 75 MSD703
1.0 - 1.4 15 8 60 0.40 75 MSD704
1.4 - 2.0 15 8 60 0.30 60 MSD705
2.0 - 3.0 15 8 60 0.25 60 MSD706
0.2 - 0.4 20 11 70 1.00 100 MSD710
0.4 - 0.6 20 11 70 0.70 75 MSD711
0.6 - 0.8 20 11 70 0.60 75 MSD712
0.8 - 1.0 20 11 70 0.50 75 MSD713
1.0 - 1.4 20 11 70 0.40 75 MSD714
1.4 - 2.0 20 11 70 0.30 60 MSD715
2.0 - 3.0 20 11 70 0.25 60 MSD716
0.2 - 0.4 30 17 100 0.80 75 MSD720
0.4 - 0.6 30 17 100 0.60 60 MSD721
0.6 - 0.8 30 17 100 0.50 60 MSD722
0.8 - 1.0 30 17 100 0.40 60 MSD723
1.0 - 1.4 30 17 100 0.30 60 MSD724
1.4 - 2.0 30 17 100 0.25 50 MSD725
2.0 - 3.0 30 17 100 0.20 50 MSD726
0.2 - 0.4 40 21 150 0.80 50 MSD730
0.4 - 0.6 40 21 150 0.60 50 MSD731
0.6 - 0.8 40 21 150 0.50 50 MSD732
0.8 - 1.0 40 21 150 0.40 50 MSD733
1.0 - 1.4 40 21 150 0.30 50 MSD734
1.4 - 2.0 40 21 150 0.25 40 MSD735
2.0 - 3.0 40 21 150 0.20 40 MSD736
Multiplier Devices
Electrical Characteristics4
MicroMetrics, Inc. 136 Harvey Road, Building C, Londonderry, NH 03053
Voice: 603-641-3800, Fax: 603-641-3500, Internet: www.micrometrics.com, E-mail: serv@micrometrics.com
