MICROSEMI GC4741-00

GC4701 - GC4750
®
TM
CONTROL DEVICES – LIMITER DIODES
RoHS Compliant
KEY FEATURES
DESCRIPTION
0B
This series of diodes meets RoHS requirements per EU Directive
2002/95/EC.
 Available as packaged devices or
as chips for hybrid applications
 Low Loss
 Suitable for applications to
18Ghz
 Excellent flat leakage
performance
 Low 1 dB compression point
 Gold Doped Diodes for Fast Turn
On
www.MICROSEMI.com
The GC4700 series diodes are specially processed PIN diodes designed
for use in passive or active limiters at frequencies through Ku band.
Thirteen categories of devices are offered for flexibility in design of low,
medium and high power limiters.
Low VB limiters have thinner I regions for faster turn-on time and better
flat leakage. Microsemi also manufactures “gold doped” limiters for fastest
turn on time. In addition, we manufacture high voltage dual junction
limiters for superior peak and CW power handling.
 RoHS Compliant1
APPLICATIONS
1
A diode limiter is a power-sensitive variable attenuator that uses the non-linear
properties of the diode to provide an impedance mismatch when sufficient amounts
of RF power are incident on the device. The output power is reduced to a level that
will not overdrive a receiver, burn out a mixer, etc. For varying input power levels in
excess of the diode’s threshold level, the limiter’s output power tends to remain
constant.
A passive limiter is one in which the limiter diodes are “turned on” by the RF signal
itself. An active limiter is one in which the limiter diodes are “turned on” primarily by
an external bias current typically supplied by a Schottky detector diode which
senses the incident signal.
Since limiter diodes are not designed to dissipate large amounts of power, the
limiter must reflect or divert the excess incident power back to the source or to
another load (i.e. via a circulator, hybrid coupler, etc.).
Limiter diodes may be used in wave guides, coax, microstrip, stripline or other
media. Single or cascaded devices may be used, depending on power levels.
Most or our devices are supplied with
Gold plated terminations. Other
terminal finishes are available on
request. Consult factory for details.
APPLICATIONS/BENEFITS
 Receiver protection circuits
 Amplifier Protection
ABSOLUTE MAXIMUM RATINGS AT 25º C
(UNLESS OTHERWISE SPECIFIED)
Rating
Value
Unit
Ir
0.5
uA
T op
-55 to +150
ºC
GC4701 - GC4750
Maximum Leakage Current
@80% of minimum Rated Vb
Operating Temperature
Symbol
Storage Temperature
T stg
-65 to +150
ºC
IMPORTANT: For the most current data, consult our website: www.MICROSEMI.com
HU
U
Specifications are subject to change, consult the factory for further information.
These devices are ESD sensitive and must be handled using ESD precautions.
Copyright  2006
Rev: 2009-01-19
Microsemi
Microwave Products
75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748
Page 1
GC4701 - GC4750
®
TM
CONTROL DEVICES – LIMITER DIODES
RoHS Compliant
P
1
P
2
(Typ)
(Max)
THERMAL
RESISTANCE
THERMAL
RESISTANCE
IR=10μA
(Volts)
@0V
(pF)
@-6V
(pF)
@-50V
(pF)
@10 mA
(Ω)
(ns)
(˚C/W)
(˚C/W)
GC4701-00
20
0.20
0.15
--
1.5
5
20
100
GC4702-00
20
0.50
0.30
--
1.2
10
12
80
GC4711-00
45
0.20
0.15
--
1.5
10
15
80
GC4712-00
45
0.50
0.30
--
1.2
15
10
60
GC4713-00
45
0.70
0.50
--
1.0
20
6
40
GC4721-00
120
0.20
0.15
--
1.5
50
1.2
40
GC4722-00
120
0.60
0.30
--
1.0
50
0.5
20
GC4723-00
120
0.80
0.50
--
0.5
100
0.3
15
GC4731-00
15
0.12
0.10
--
2.0
5
30
120
GC4732-00
15
0.20
0.15
--
1.5
5
20
80
GC4741-00
30
0.12
0.10
--
2.0
7
20
100
GC4742-00
30
0.20
0.15
--
1.5
7
15
70
3.0@50mA
300
4
10
GC4750-002
(3)
250
--
--
0.25
(4)
www.MICROSEMI.com
CHIP ELECTRICAL PARAMETERS @ 25C (unless otherwise specified)
Vb
Cj0
Cj-6
Cj-50
Rs
TL
Model #
(Min)
(Typ)
(Max)
(Max)
(Typ)
(Typ)
TYPICAL RF PERFORMANCE @ 25C (unless otherwise specified)
Model
Number
Vb
(Min)
PEAK POWER
PIN
@ 1  S
TYPICAL
LEAKAGE
(dBm)
(dBm)
GC4701
20
+50
+22
+10
0.1
2
GC4702
20
+53
+24
+10
0.2
3
GC4711
45
+53
+27
+15
0.1
3
GC4712
45
+56
+29
+15
0.2
4
GC4713
45
+59
+31
+15
0.2
5
Pout
TYPICAL
THRESHOLD
TYPICAL
INS. LOSS
MAXIMUM
CW POWER
(dBm)
IL
(dB)
(Watts)
GC4721
120
+60
+39
+20
0.1
5
GC4722
120
+63
+41
+20
0.2
10
15
120
+66
+44
+20
0.2
15
+47
+19
+7
0.1
2
GC4732
15
+50
+22
+4
0.1
3
GC4741
30
+47
+24
+12
0.1
3
GC4742
30
+50
+27
+12
0.1
4
+44
+31
0.2
50
GC4750
250
+56 @10uS
Notes
1) Pulse length 1 microsecond.
2) As measured in style 30 package
3) Available in 002 style or 115-2 package styles
4) CJ for 2 junctions in parallel @ VR=50V
Copyright  2006
Rev: 2009-01-19
Microsemi
Microwave Products
75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748
ELECTRICALS
GC4723
GC4731
Page 2
GC4701 - GC4750
®
TM
CONTROL DEVICES – LIMITER DIODES
RoHS Compliant
POWER LEAKAGE PERFORMANCE
0 dB
15 Micron
4 Micron
+40
10 dB
Power Out (mw)
Pout
20 dB
2 Micron
www.MICROSEMI.com
+50
TRANSFER CHARACTERISTICS
30 dB
1 dB
Compression
Point
+30
+20
Low Level
Ins. Loss
+10
+0
+0
+10
+20
+30
+40
+50
+60
+70
Peak Input Power (dBm)
Linear Region
Compression
Hard Limiting
Burnout
Pin
Typical Power Leakage vs I Region Thickness
Typical Limiter Transfer Characteristics
SERIES RESISTANCE
HIGH POWER DUAL LIMITER DESIGN
Typical RS Vs IF Curve
SCHOTTKY
DRIVER (GC9700)
1000
GC4750
RS(Ω)
100
DC BLOCK
RF IN
50 Ω
10
1
0.1
0.001
DC BLOCK
GC4750
GC4712
RF OUT
50 Ω
λ/4
Spacing
0.01
0.1
1
10
100
2 Stage Limiter with Schottky Driver
IF(mA)
GRAPHS
Copyright  2006
Rev: 2009-01-19
Microsemi
Microwave Products
75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748
Page 3
GC4701 - GC4750
®
TM
CONTROL DEVICES – LIMITER DIODES
RoHS Compliant
PACKAGE STYLE 00
DUAL CHIP STYLE 002
www.MICROSEMI.com
Notes:
Notes:
-
- Order as GC47xx – 002
Order as GC47xx – 00
PACKAGE SYLE 30
PACKAGE STYLE 115-2
-
Notes:
Order as GC47xx – 30
-
MECHANICAL
Notes:
Order as GC47xx – 115-2
OTHER PACKAGE STYLES AVAILABLE ON REQUEST
CONSULT FACTORY
Copyright  2006
Rev: 2009-01-19
Microsemi
Microwave Products
75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748
Page 4
GC4701 - GC4750
®
TM
CONTROL DEVICES – LIMITER DIODES
RoHS Compliant
PACKAGE STYLE 35
PACKAGE SYLE 42
-
www.MICROSEMI.com
Notes:
Notes:
- Order as GC47xx – 42
Order as GC47xx – 35
OTHER PACKAGE STYLES AVAILABLE ON REQUEST
CONSULT FACTORY
MECHANICAL
Copyright  2006
Rev: 2009-01-19
Microsemi
Microwave Products
75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748
Page 5