UM4300 / UM7300
SWITCHING / ATTENUATOR PIN DIODES
DESCRIPTION
KEY FEATURES
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.
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
Isolated stud package available
ABSOLUTE MAXIMUM RATINGS AT 25º C
(UNLESS OTHERWISE SPECIFIED)
UM7300
UM4300
θ
θ
PD
(W)
PD
(W)
Pkg
Condition
(°C/W)
(°C/W)
25 °C Pin Temperature
20
7.5
7.5
4
20
A
APPLICATIONS / BENEFITS
½ in. total length to 25 °C
Contact Free Air
10
2.5
RF Switching
B & E
37.5
15
RF Attenuators
°C
20
15
7.5
10
7.5
6
20
25
C
D
25
Stud Temperature
Pick and Place compatible
25 °C Stud Temperature
Surface Mount Versions
1RoHS compliant packaging available:
use UMX4301SM, etc
25 °C End Cap Temperature
15
20
5.5
18
SM
ALL
1 us pulse (Single)
500 kW
100 kW
VOLTAGE RATINGS
Reverse Voltage @ 10uA
Part Number
100
200
UM4301
UM4302
UM4306
UM4310
UM7301
UM7302
UM7306
UM7310
600
1000
IMPORTANT:
1 - RoHS compliant versions of the UM4300 and
UM7300 are available. Specify UMX4300 or UMX7300
for RoHS version. Consult factory for details.
For the most current data consult MICROSEMI’s website:
www.MICROSEMI.com
Microsemi
Copyright 2005
Rev: 3/30/2009
Page 1
Microwave Products
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