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 UM4300 / UM7300
FOR ATTENUATOR APPLICATIONS O S
DESCRIPTION The UM4300 and UM7300 series combine a diode chip of extremely thick intrinsic region with a low thermal resistance construction. This results in diodes uniquely applicable to very low distortion linear attenuators and specialized functions. The UM4300 series, with large cross-sectional chip area offers the highest power capability, of the two series. The UM7300 series offers lower capacitance. Both diode series are intended for use in linear attenuators operating from HF to beyond 1 GHz. Low distortion is a result of transit time frequencies below 5 MHz. Operated as RF switches, either diode series can be operated at low dc reverse bias voltages, to hold off much higher RF voltage levels.
KEY FEATURES
WWW .Microsemi .C OM
Extremely low distortion performance Useful frequency range extends below 500 kHz Power dissipation to 20 W (UM4300) Capacitance as low as 0.7 pF (UM7300) Voltage ratings to 1000V Non cavity design Thermally matched configuration
IMPORTANT: For the most current data, consult MICROSEMI's website: http://www.microsemi.com
ABSOLUTE MAXIMUM RATINGS AT 25 C (UNLESS OTHERWISE SPECIFIED)
Package
A B&E C D SM All
Condition
O 25 C Pin Temperature
UM4300 PD
20 W 7.5 oC/W 10 W 15 oC/W 2.5 W 20 W 7.5 oC/W 15 W 10 C/W 15 W 20 C/W 500 kW
o o
UM7300 PD
7.5 W 4W 7.5 W 6W 20 OC/W 37.5 OC/W 20 C/W 25 C/W
O O
Compatible with automatic insertion equipment
1/2 in. total length to 25 OC Contact Free Air O 25 C Stud Temperature 25 C Stud Temperature 25 C End Cap Temperature 1 us pulse (Single)
O O
APPLICATIONS/BENEFITS Isolated stud package available Surface mount package available RoHS compliant packaging available: use UMX4301SM, etc.
5.5 W 18 OC/W 100 kW
VOLTAGE RATINGS
Reverse Voltage @ 10 uA 100 200 400 600 800 1000 UM4301 UM4302 UM4306 UM4310 UM7301 UM7302 UM7306 UM7310
UM4300 SERIES UM4300 SERIES
Style "B"
Style "SM"
Copyright 2005 Rev. 0, 2006-04-27
Microsemi
Page 1
UM4300 / UM7300
FOR ATTENUATOR APPLICATIONS O S
WWW .Microsemi .C OM
Parameter
Reverse Current (Max) Series Resistance(Max) Series Resistance(Min) Capacitance (Max) Parallel Resistance(Min) Carrier Lifetime(Min) I-Region Width (Min)
Symbol
IR RS RS CT RP
Conditions
At rated voltage If = 100 mA, F= 100 MHz If = 10 uA, F= 100 MHz VR = 100 V, F = 1 MHZ VR = 100 V, F = 100 MHz IF = 10 mA -
UM4300
10 1.5 1000 2.2 200k 6.0 250
UM7300
10 3.0 3000 0.7 150k 4.0 250
Units
uA Ohms Ohms pF Ohms us um
W
Rs versus If TYPICAL
105
104 UM7300
10
3
Rs (Ohms)
102
UM4300
101 f= 100 MHz 10 0
10
-1
ELECTRICALS ELECTRICALS
10
-6
10
-5
-4 10
10
-3
-2 10
10
-1
10
0
If (mA)
Copyright 2005 Rev. 0, 2006-04-27
Microsemi
Page 2
UM4300 / UM7300
FOR ATTENUATOR APPLICATIONS O S
WWW .Microsemi .C OM
UM4300
PARALLEL RESISTANCE versus REVERSE VOLTAGE TYPICAL
103
100 MHz 102
Rp (kOhms)
500 MHz 1 GHz
101
100 100 101 102 103
Vr (V)
UM7300
PARALLEL RESISTANCE versus REVERSE VOLTAGE TYPICAL
102 100 MHz
500 MHz 1 GHz
Rp (kOhms)
3 GHz 101
100 100 101 102 103
Vr (V)
Copyright 2005 Rev. 0, 2006-04-27
Microsemi
Page 3
UM4300 / UM7300
FOR ATTENUATOR APPLICATIONS O S
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UM4300
Ct versus Vr TYPICAL
6
f = 1 MHz
4
Ct (pF)
f = 5 MHz 2 f = 10 MHz f => 100 MHz
0 1 10 100 1000
Vr (Volts)
UM7300
Ct versus Vr TYPICAL
6
5
4 f = 1 MHz
Ct (pF)
3
ELECTRIICALS ELECTRIICALS ELECTR CALS ELECTR CALS
f = 5 MHz 2 f = 10 MHz 1 f => 100 MHz 0 1 10 100 1000
Vr (Volts)
Copyright 2005 Rev. 0, 2006-04-27
Microsemi
Page 4
UM4300 / UM7300
FOR ATTENUATOR APPLICATIONS O S
WWW .Microsemi .C OM
PULSE THERMAL IMPEDANCE VERSUS WIDTH TYPICAL
o
PULSE THERMAL IMPEDANCE ( C/W)
102
101
10
0
UM4300
UM7300 10-1
10-2
10-3 10-6 10-5 10-4 10-3 10-2 10-1 100
PULSE WIDTH (SEC)
POWER RATING STUD MOUNTED DIODES
20 18 W
MAX POWER DISSIPATION (W)
15
15 W
UM4300C
UM4300D
ELECTRICALS ELECTRICALS
10 7.5 W 6W 5 UM7300D UM7300C
0 0 25 50 75 100
STUD TEMPERATURE ( C)
Copyright 2005 Rev. 0, 2006-04-27
125 o
150
175
Microsemi
Page 5
UM4300 / UM7300
FOR ATTENUATOR APPLICATIONS O S
WWW .Microsemi .C OM
UM4300
UM7300
ELECTRICALS ELECTRICALS
Copyright 2005 Rev. 0, 2006-04-27
Microsemi
Page 6
UM4300 / UM7300
FOR ATTENUATOR APPLICATIONS O S
WWW .Microsemi .C OM
UM4300/UM7300
NORMALIZED Rs versus TEMPERATURE
1.3
NORMALIZED DIODE RESISTANCE
1.2
1.1
1.0
0.9
0.8
0.7 -60 -40 -20 0 20 40 o 60 80 100 120
TEMPERATURE ( C)
Vf versus If TYPICAL
100
10-1
10
-2
If (A)
ELECTRICALS ELECTRICALS
UM4300 10-3
UM7300 10 -4
10-5 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
Vf (V)
Copyright 2005 Rev. 0, 2006-04-27
Microsemi
Page 7
UM4300 / UM7300
FOR ATTENUATOR APPLICATIONS O S
WWW .Microsemi .C OM
UM4300
STYLE "A" STYLE "B"
STYLE "C"
STYLE "CR"
MECHANICAL MECHANICAL MECHANICAL
Copyright 2005 Rev. 0, 2006-04-27
Microsemi
Page 8
UM4300 / UM7300
FOR ATTENUATOR APPLICATIONS O S
WWW .Microsemi .C OM
UM4300
STYLE "D" STYLE "DR"
STYLE "E"
STYLE "SM"
MECHANICAL MECHANICAL MECHANICAL MECHANICAL
Copyright 2005 Rev. 0, 2006-04-27
Microsemi
Page 9
UM4300 / UM7300
FOR ATTENUATOR APPLICATIONS O S
WWW .Microsemi .C OM
UM7300
STYLE "A"
STYLE "B"
STYLE "C"
STYLE "CR"
MECHANICAL MECHANICAL
Copyright 2005 Rev. 0, 2006-04-27
Microsemi
Page 10
UM4300 / UM7300
FOR ATTENUATOR APPLICATIONS O S
WWW .Microsemi .C OM
UM7300
STYLE "D" STYLE "DR
STYLE "E"
STYLE "SM"
MECHANICAL MECHANICAL
Copyright 2005 Rev. 0, 2006-04-27
Microsemi
Page 11
UM4300 / UM7300
FOR ATTENUATOR APPLICATIONS O S
WWW .Microsemi .C OM
UM4300 STYLE "SM" FOOTPRINT
MECHANICAL MECHANICAL
Copyright 2005 Rev. 0, 2006-04-27
Microsemi
Page 12
UM4300 / UM7300
FOR ATTENUATOR APPLICATIONS O S
WWW .Microsemi .C OM
UM7300 STYLE "SM" FOOTPRINT
NOTES: 1. These dimensions will match the terminals and provide for additional solder fillets at the outboard ends at least as wide as the terminals themselves, assuming accuracy of placement within 0.005" 2. If the mounting method chosen requires use of an adhesive separate from the solder compound, a round (or square) spot of cement as shown should be centrally located.
MECHANICAL MECHANICAL
Copyright 2005 Rev. 0, 2006-04-27
Microsemi
Page 13
UM4300 / UM7300
FOR ATTENUATOR APPLICATIONS O S
NOTES:
WWW .Microsemi .C OM
NOTES NOTES
Copyright 2005 Rev. 0, 2006-04-27
Microsemi
Page 14


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