Surface Mount GaAs
Tuning Varactors
MA46 Series
V3.00
M/A-COM, Inc.
North America:
Tel. (800) 366-2266
s
Asia/Pacific: Tel. +81 3 3263 8761
s
Europe: Tel. +44 (1344) 869 595
Fax (800) 618-8883
Fax +81 3 3263 8769
Fax +44 (1344) 300 020
1
Specifications Subject to Change Without Notice.
Features
q
Low Cost
q
Surface Mount Packages
q
Very High Quality Factor
q
Constant Gamma Abrupt Junction: 0.5
Hyperabrupt Junctions: 0.75, 1.25 and 1.5
q
Capacitance Ratio to 10:1
q
Case Style 1056 is Hermetic and may be
Screened to JANTX levels
q
Tape and Reel Packaging Available
Description
M/A-COM offers four families of low cost surface mount
gallium arsenide tuning varactors. All families have sili-
con nitride protected junctions for low leakage current
and high reliability.
The
MA46H500 through MA46H504
family has hyper-
abrupt junctions with constant gamma of 1.5 from 2 to 12
volts and high quality factor.
The
MA46H200 through MA46H206
family has hyper-
abrupt junctions with constant gamma of 1.25 from 2 to
20 volts and higher quality factor.
The
MA46H070 through MA46H073
family has hyper-
abrupt junctions with constant gamma of 0.75 from 0 to
20 volts and very high quality factor.
The
MA46504 through MA46506
family has abrupt junc-
tions with constant gamma of 0.5 from 0 to 30 volts and
the highest quality factor.
Applications
The
MA46H500 through MA46H504 (gamma 1.5)
family of
constant gamma hyperabrupt GaAs tuning varactors is
designed for wide bandwidth VCOs and voltage tuned
filters where limited bias voltage is available. These var-
actors have greatest capacitance change versus voltage at
the cost of slightly lower quality factor than the other
families of GaAs varactors.
The
MA46H200 through MA46H206 (gamma 1.25)
family
of constant gamma hyperabrupt GaAs tuning varactors
has the largest capacitance ratio of the families of GaAs
varactors and high quality factor. These diodes are very
well suited for wide bandwidth VCOs and VTFs where
the optimum combination of very wide tuning range and
high quality factor is required.
The
MA46H070 through MA46H073 (gamma 0.75)
family
of constant gamma hyperabrupt GaAs tuning varactors
has quality factor approaching that of abrupt junction var-
actors, but higher capacitance change versus tuning volt-
age. These diodes are very well suited for narrower
bandwidth VCOs and VTFs where wide tuning range and
very high quality factor are required.
The
MA46504 through MA46506 (gamma 0.5)
family of
constant gamma abrupt GaAs tuning varactors has the
highest quality factor. These diodes are very well suited
for narrower bandwidth VCOs and VTFs where highest
quality factor is of paramount concern.
Case Styles
1056
1088
Surface Mount GaAs Tuning Varactors
MA46 Series
V3.00
M/A-COM, Inc.
North America:
Tel. (800) 366-2266
s
Asia/Pacific: Tel. +81 3 3263 8761
s
Europe: Tel. +44 (1344) 869 595
Fax (800) 618-8883
Fax +81 3 3263 8769
Fax +44 (1344) 300 020
2
Specifications Subject to Change Without Notice.
Electrical Specifications
@ 25C
Gamma 0.5 Abrupt Tuning Varactors
Breakdown Voltage @ 10 A = 30 V minimum
Reverse Current @ 24 V = 100 nA maximum
Gamma = 0.48 - 0.50, V
R
= 0 to 30 V
Electrical Specifications
@ 25C
Gamma 0.75 Hyperabrupt Tuning Varactors
Breakdown Voltage @ 10 A = 20 V minimum
Reverse Current @ 16 V = 100 nA maximum
Gamma = 0.68 - 0.83, V
R
= 0 to 20 V
Absolute Maximum Ratings
@ 25C
CAPACITANCE vs REVERSE VOLTAGE
Parameter
Case 1056
Case 1088
Operating Temperature
-65C to +150C
-65C to +125C
Storage Temperature
-65C to +200C
-65C to +125C
Reverse Voltage
Breakdown Voltage
Forward Current
50 mA @ 25C
Power Dissipation
50 mW @ +25C, derate linearly to 0 mW
at maximum operating temperature
Nominal
Total
Total
Model
Capacitance
Capacitance
Typical
Number
(pF)
Ratio (C
T0
/C
T30
)
Q
f=1 MHz
f=1 MHz
f=50 MHz
V
R
=4 Volts
V
R
=0/V
R
=30
V
R
=4 Volts
MA46504
0.5 - 0.7
2.1
6000
MA46505
0.9 - 1.1
2.8
5700
MA46506
2.7 - 3.3
3.4
4500
Nominal
Total
Total
Model
Capacitance
Capacitance
Typical
Number
(pF)
Ratio (C
T0
/C
T20
)
Q
f = 1 MHz
f = 1 MHz
f = 50 MHz
V
R
= 4 Volts
V
R
= 0/V
R
=20
V
R
= 4 Volts
MA46H070
0.5 - 0.7
5.5
4500
MA46H071
0.9 - 1.1
6.4
4500
MA46H072
2.7 - 3.3
7.5
3000
MA46H073
4.5 - 5.5
7.5
2200
REVERSE VOLTAGE (VOLTS)
.1
10
1
100
100
10
1
0.1
TOTAL CAPACITANCE (pF)
MA46506
MA46505
MA46504
Typical Performance Curves
CAPACITANCE vs REVERSE VOLTAGE
Surface Mount GaAs Tuning Varactors
MA46 Series
M/A-COM, Inc.
North America:
Tel. (800) 366-2266
s
Asia/Pacific: Tel. +81 3 3263 8761
s
Europe: Tel. +44 (1344) 869 595
Fax (800) 618-8883
Fax +81 3 3263 8769
Fax +44 (1344) 300 020
3
Specifications Subject to Change Without Notice.
V3.00
Electrical Specifications
@ 25C
Gamma 1.25 Hyperabrupt Tuning Varactors
Breakdown Voltage @ 10 A = 22 V minimum
Reverse Current @ 16 V = 100 nA maximum
Gamma = 1.13 - 1.38, V
R
= 2 to 20 V
Temperature Coefficient of Capacitance vs Reverse Voltage
Typical Performance Curves
Capacitance vs Reverse Voltage
6 500
6 503
REVERSE VOLTAGE (VOLTS)
0.1
10
1
100
100
10
1
0.1
TOTAL CAPACITANCE (pF)
MA46H503
MA46H502
MA46H501
MA46H500
MA46H504
Electrical Specifications
@ 25C
Gamma 1.5 Hyperabrupt Tuning Varactors
Breakdown Voltage @ 10A = 18 V minimum
Reverse Current @ 14 V = 100 nA maximum
Gamma = 1.4 - 1.6, V
R
= 2 to 12 V
Nominal
Total
Total
Model
Capacitance
Capacitance
Typical
Number
(pF)
Ratio (C
T2
/C
T12
)
Q
f = 1 MHz
f = 1 MHz
f = 50 MHz
V
R
= 4 Volts
V
R
= 2/V
R
= 12
V
R
= 4 Volts
MA46H500
0.5 - 0.7
2.8
2500
MA46H501
0.9 - 1.1
3.9
2500
MA46H502
2.7 - 3.3
5.0
1800
MA46H503
4.5 - 5.5
8.1
1200
MA46H504
9.0 - 11.0
8.1
1200
Nominal
Total
Total
Model
Capacitance
Capacitance
Typical
Number
(pF)
Ratio (C
T2
/C
T20
)
Q
f = 1 MHz
f = 1 MHz
f=50 MHz
V
R
= 4 Volts
V
R
= 2/V
R
=20
V
R
= 4 Volts
MA46H200
0.5 - 0.7
3.0
3000
MA46H201
0.9 - 1.1
4.1
3000
MA46H202
2.7 - 3.3
5.6
2000
MA46H203
4.5 - 5.5
10.0
1500
MA46H204
9.0 - 11.0
10.0
1500
MA46H205
10.8 - 13.2
10.0
1500
MA46H206
13.5 - 16.5
10.0
1500
Surface Mount GaAs Tuning Varactors
MA46 Series
V3.00
M/A-COM, Inc.
North America:
Tel. (800) 366-2266
s
Asia/Pacific: Tel. +81 3 3263 8761
s
Europe: Tel. +44 (1344) 869 595
Fax (800) 618-8883
Fax +81 3 3263 8769
Fax +44 (1344) 300 020
4
Specifications Subject to Change Without Notice.
Dot Indicates
Cathode
Top View
A
Bottom View
C
45
Typ
E
A
Side View
F
B
D
Not to Scale
Top View
A
Dot Indicates
Cathode
C
B
D
Side View
H Typ.
F
E
Typ.
G
Ordering Information
These GaAs tuning varactors are available in either case
style as shown. When ordering, specify the desired case
style by adding the case designation as a suffix to the
model number. For example, a MA46H200-1088 speci-
fies a 1.25 gamma hyperabrupt tuning diode in case
style 1088.
Case Styles
1056
INCHES
MILLIMETERS
DIM.
MIN.
MAX.
MIN.
MAX.
A
0.175
0.195
4.44
4.95
B
0.040
0.050
1.02
1.27
C
0.085
0.095
2.16
2.41
D
0.015
0.025
0.38
0.64
E
0.010
0.015
0.25
0.38
F
0.015
0.020
0.38
0.51
G
0.004
0.006
0.10
0.15
H
0.020
0.030
0.51
0.76
J
0.013
0.033
0.33
0.84
K
0.003
0.005
0.08
0.13
INCHES
MILLIMETERS
DIM.
MIN.
MAX.
MIN.
MAX.
A
0.065
0.075
1.72
1.90
B
0.034
0.041
0.86
1.04
C
0.030
0.036
0.76
0.91
D
0.013
0.017
0.33
0.44
E
0.010
0.014
0.25
0.36
F
0.043
0.053
1.09
1.35
Package Capacitance: 0.15 pF Typical
Package Inductance: 0.45 nH Typical
Package Capacitance: 0.13 pF Typical
Package Inductance: 0.50 nH Typical
1088
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