www.MICROSEMI.com
UM4000 / UM4900
HIGH POWER PIN DIODES
RoHS Compliant Versions Available
DESCRIPTION
The UM4000 and UM4900 series features high power PIN diodes with long carrier
lifetimes and thick I-regions. They are especially suitable for use in low distortion
switches and attenuators, in HF through S band frequencies. While both series are
electrically equivalent, the UM4900 series have higher power ratings due to a shorter
thermal path between the chip and package. High charge storage and long carrier
lifetime enable high RF levels to be controlled with relatively low bias current.
Similarly, peak RF voltages can be handled well in excess of applied reverse bias
voltage.
Both series have been fully qualified in high power UHF phase shifters and megawatt
peak-power duplexers, accumulating thousands of hours of proven performance.
Both types have been used in the design of antenna selectors and couplers, where
inductance and capacitance elements are switched in and out of filter or cavity
networks.
The standard finish for the UM4000 series is Sn/Pb. For RoHS compliant devices,
use the UMX prefix. (IE: UMX4000SM) The UMX series meets RoHS requirements
per EU Directive 2002/95/EC.
IMPORTANT:
For the most current data, consult our website:
www.MICROSEMI.com
KEY FEATURES
Voltage ratings to 1000 V
Power dissipation to 37.5 W
Series resistance rated at 0.5
Ω
Carrier lifetime greater than 5 µs
Non cavity design
RoHS compliant version
1
available
Thermally matched configuration
Low capacitance at 0 V bias
Low conductance at 0 V bias
Compatible with automatic
insertion equipment
1- RoHS compliant version is
supplied with a matte tin finish.
(Order UMX4000, UMX4900)
www.MICROSEMI.com
ABSOLUTE MAXIMUM RATINGS AT 25º C
(UNLESS OTHERWISE SPECIFIED)
Package
Condition
UM4000
PD
(W)
θ
(
O
C/W)
A
B&E
C
D
SM
All
25
O
C Pin Temperature
½ in. total length to 25 C Contact
Free Air
25
O
C Stud Temperature
25
O
C Stud Temperature
25
O
C End Cap Temperature
1 us pulse (Single)
O
UM4900
PD
(W)
37.5
12
2.5
6
8
7
37.5
25
N/A
100 kW
4
6
θ
(
O
C/W)
4
12.5
25
12
2.5
25
18.75
20
100 kW
6
1.25
APPLICATIONS/BENEFITS
Isolated stud package available
Surface mount package available
VOLTAGE RATINGS
Reverse Voltage @ 10 uA
100
200
400
600
1000
UM4000
UM4001
UM4002
-
UM4006
UM4010
UM4900
UM4901
UM4902
-
UM4906
-
UM4000/UM4900
UM4000/UM4900
Copyright
2007
Rev: 2009-01-19
Microsemi
Microwave Products
Page 1
75 Technology Drive, Lowell, MA. 01851, 978-442-5600,
Fax
: 978-937-3748
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