UM4000 / UM4900
HIGH POWER PIN DIODES
KEY FEATURES
DESCRIPTION
The UM4000 and UM4900 series features
Similarly, peak RF voltages can be handled
well in excess of applied reverse bias voltage.
Both series have been fully qualified in high
Voltage ratings to 1000 V
high power PIN diodes with long carrier
lifetimes and thick I-regions. They are
Power dissipation to 37.5 W
especially suitable for use in low distortion power UHF phase shifters and megawatt peak-
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
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
Series resistance rated at 0.5 Ω
Carrier lifetime greater than 5 µs
thermal path between the chip and package. elements are switched in and out of filter or
Non cavity design
High charge storage and long carrier
lifetime enable high RF levels to be
controlled with relatively low bias current.
cavity networks.
Thermally matched configuration
Low capacitance at 0 V bias
IMPORTANT: For themost current data, consultMICROSEMI’s website: http://www.microsemi.com
Low conductance at 0 V bias
ABSOLUTE MAXIMUM RATINGS AT 25º C
(UNLESS OTHERWISE SPECIFIED)
Compatible with automatic
insertion equipment
Package
A
Condition
UM4000
PD
UM4900
PD
θ
θ
25 OC Pin Temperature
25 W
6 OC/W 37.5 W
4 OC/W
B & E ½ in. total length to 25 OC Contact
12 W 12.5 OC/W 12 W 12.5 OC/W
Free Air
2.5 W
25 W
2.5 W
APPLICATIONS/BENEFITS
C
D
25 OC Stud Temperature
25 OC Stud Temperature
25 OC End Cap Temperature
1 us pulse (Single)
6 OC/W 37.5 W
4 OC/W
6 OC/W
Isolated stud package available
18.75 W 8OC/W 25 W
Surface mount package available
SM
All
20 W
7OC/W
N/A
100 kW
100 kW
VOLTAGE RATINGS
Reverse Voltage @ 10 uA
UM4000
UM4001
UM4002
-
UM4006
UM4010
UM4900
UM4901
UM4902
-
UM4906
-
100
200
400
600
1000
Style “B”
Style “SM”
Copyright 2005
Microsemi
Page 1
Rev. 0, 2005-07-14