Surface Mount GaAs
Tuning Varactors
Features
q
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MA46 Series
V3.00
Case Styles
q
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Low Cost
Surface Mount Packages
Very High Quality Factor
Constant Gamma Abrupt Junction: 0.5
Hyperabrupt Junctions: 0.75, 1.25 and 1.5
Capacitance Ratio to 10:1
Case Style 1056 is Hermetic and may be
Screened to JANTX levels
Tape and Reel Packaging Available
1056
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.
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.
Specifications Subject to Change Without Notice.
1088
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.
M/A-COM, Inc.
North America:
Tel. (800) 366-2266
Fax (800) 618-8883
s
1
Asia/Pacific: Tel. +81 3 3263 8761
Fax +81 3 3263 8769
s
Europe: Tel. +44 (1344) 869 595
Fax +44 (1344) 300 020
Surface Mount GaAs Tuning Varactors
Absolute Maximum Ratings
@ 25°C
Parameter
Operating Temperature
Storage Temperature
Reverse Voltage
Forward Current
Power Dissipation
Case 1056
-65°C to +150°C
-65°C to +200°C
Case 1088
-65°C to +125°C
-65°C to +125°C
MA46 Series
V3.00
Breakdown Voltage
50 mA @ 25°C
50
mW @ +25°C, derate linearly to 0 mW
at maximum operating temperature
Typical Performance Curves
Electrical Specifications
@ 25°C
Gamma 0.5 Abrupt Tuning Varactors
TOTAL CAPACITANCE (pF)
Breakdown Voltage @ 10 µA = 30 V minimum
Reverse Current @ 24 V = 100 nA maximum
Gamma = 0.48 - 0.50, V
R
= 0 to 30 V
Total
Capacitance
(pF)
f=1 MHz
V
R
=4 Volts
CAPACITANCE vs REVERSE VOLTAGE
100
Model
Number
Nominal
Total
Capacitance
Ratio (C
T0
/C
T30
)
f=1 MHz
V
R
=0/V
R
=30
10
Typical
Q
f=50 MHz
V
R
=4 Volts
1
MA46506
MA46505
MA46504
MA46504
MA46505
MA46506
0.5 - 0.7
0.9 - 1.1
2.7 - 3.3
2.1
2.8
3.4
6000
5700
4500
0.1
.1
1
10
100
REVERSE VOLTAGE (VOLTS)
Electrical Specifications
@ 25°C
Gamma 0.75 Hyperabrupt Tuning Varactors
Breakdown Voltage @ 10 µA = 20 V minimum
Reverse Current @ 16 V = 100 nA maximum
Gamma = 0.68 - 0.83, V
R
= 0 to 20 V
Total
Capacitance
(pF)
f = 1 MHz
V
R
= 4 Volts
MA46H070
MA46H071
MA46H072
MA46H073
0.5 - 0.7
0.9 - 1.1
2.7 - 3.3
4.5 - 5.5
Nominal
Total
Capacitance
Ratio (C
T0
/C
T20
)
f = 1 MHz
V
R
= 0/V
R
=20
5.5
6.4
7.5
7.5
CAPACITANCE vs REVERSE VOLTAGE
Model
Number
Typical
Q
f = 50 MHz
V
R
= 4 Volts
4500
4500
3000
2200
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 3 3263 8761
Fax +81 3 3263 8769
s
Europe: Tel. +44 (1344) 869 595
Fax +44 (1344) 300 020
Surface Mount GaAs Tuning Varactors
Electrical Specifications
@ 25°C
Gamma 1.25 Hyperabrupt Tuning Varactors
Breakdown Voltage @ 10 µA = 22 V minimum
Reverse Current @ 16 V = 100 nA maximum
Gamma = 1.13 - 1.38, V
R
= 2 to 20 V
Total
Capacitance
(pF)
f = 1 MHz
V
R
= 4 Volts
MA46H200
MA46H201
MA46H202
MA46H203
MA46H204
MA46H205
MA46H206
0.5 - 0.7
0.9 - 1.1
2.7 - 3.3
4.5 - 5.5
9.0 - 11.0
10.8 - 13.2
13.5 - 16.5
Nominal
Total
Capacitance
Ratio (C
T2
/C
T20
)
f = 1 MHz
V
R
= 2/V
R
=20
3.0
4.1
5.6
10.0
10.0
10.0
10.0
MA46 Series
V3.00
Electrical Specifications
@ 25°C
Gamma 1.5 Hyperabrupt Tuning Varactors
Breakdown Voltage @ 10µA = 18 V minimum
Reverse Current @ 14 V = 100 nA maximum
Gamma = 1.4 - 1.6, V
R
= 2 to 12 V
Total
Capacitance
(pF)
f = 1 MHz
V
R
= 4 Volts
MA46H500
MA46H501
MA46H502
MA46H503
MA46H504
0.5 - 0.7
0.9 - 1.1
2.7 - 3.3
4.5 - 5.5
9.0 - 11.0
Nominal
Total
Capacitance
Ratio (C
T2
/C
T12
)
f = 1 MHz
V
R
= 2/V
R
= 12
2.8
3.9
5.0
8.1
8.1
Model
Number
Typical
Q
f=50 MHz
V
R
= 4 Volts
3000
3000
2000
1500
1500
1500
1500
Model
Number
Typical
Q
f = 50 MHz
V
R
= 4 Volts
2500
2500
1800
1200
1200
Typical Performance Curves
Capacitance vs Reverse Voltage
6 500
100
TOTAL CAPACITANCE (pF)
6 503
10
MA46H504
1
MA46H503
MA46H502
MA46H501
MA46H500
0.1
0.1
1
10
100
REVERSE VOLTAGE (VOLTS)
Temperature Coefficient of Capacitance vs Reverse Voltage
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 3 3263 8761
Fax +81 3 3263 8769
s
Europe: Tel. +44 (1344) 869 595
Fax +44 (1344) 300 020
Surface Mount GaAs Tuning Varactors
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.
MA46 Series
V3.00
Case Styles
1056
Top View
A
Bottom View
45
˚
Typ
INCHES
DIM.
A
MIN.
0.065
0.034
0.030
0.013
0.010
0.043
MAX.
0.075
0.041
0.036
0.017
0.014
0.053
MILLIMETERS
MIN.
1.72
0.86
0.76
0.33
0.25
1.09
MAX.
1.90
1.04
0.91
0.44
0.36
1.35
E
A
F
B
C
D
Dot Indicates
Cathode
Side View
C
E
F
Package Capacitance: 0.15 pF Typical
Package Inductance: 0.45 nH Typical
B
D
Not to Scale
1088
Top View
G
Dot Indicates
Cathode
H Typ.
Side View
DIM.
A
B
C
MIN.
0.175
0.040
0.085
0.015
0.010
0.015
0.004
0.020
0.013
0.003
INCHES
MAX.
0.195
0.050
0.095
0.025
0.015
0.020
0.006
0.030
0.033
0.005
MILLIMETERS
MIN.
4.44
1.02
2.16
0.38
0.25
0.38
0.10
0.51
0.33
0.08
MAX.
4.95
1.27
2.41
0.64
0.38
0.51
0.15
0.76
0.84
0.13
C
A
D
E
F
G
B
D
F
E
Typ.
H
J
K
Package Capacitance: 0.13 pF Typical
Package Inductance: 0.50 nH Typical
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 3 3263 8761
Fax +81 3 3263 8769
s
Europe: Tel. +44 (1344) 869 595
Fax +44 (1344) 300 020
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