Microsemi
75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748
Page 1
Copyright 2005
Rev. A, 2005-07-05
WWW.Microsemi .COM
UM9301/UM9301SM
Commercial Attenuator Diode
DESCRIPTION
DESCRIPTIONDESCRIPTION
DESCRIPTION
The UM9301 PIN Diode utilizes special
overall chip geometry with an extremely
thick intrinsic “I” region, to offer unique
capabilities in both RF switch and
attenuator applications.
Volume production also makes the diode
an economical choice suitable for many
commercial low power equipments.
The UM9301 has been designed for use
in bridged TEE attenuator circuits
commonly utilized for gain and slope
control in CATV amplifiers.
Low distortion and high dynamic range are
characteristic of the diodes’ outstanding
performance.
The UM9301 is also appropriate for
switch applications, when little or no bias
voltage is available. Frequent applications
occur in portable 12 volt-powered
communications equipments, operating at
frequencies as low as 2 MHz.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
ABSOLUTE MAXIMUM RATINGS AT 25º C
(UNLESS OTHERWISE SPECIFIED)
Rating Symbol Value Unit
Reverse Voltage VR 75 Volts
Reverse Current IR 10 µA
Average Power Dissipation (1, 2) PA 1.0 Watts
Storage Temperature T stg -65 to 175 ºC
Operating Temperature T op -65 to 175 ºC
UM9301
UM9301SM
(1) Mounted on 2” square by 0.06’ thick FR4 board with a 1” x 1” square 2-ounce copper pattern..
(2) Lead ½ inch. (12.7mm) Total to 25°C Contact.
KEY FEATURES
KEY FEATURES KEY FEATURES
KEY FEATURES
Specified low distortion
Low distortion properties at low
reverse bias
Resistance specified at 3 current
points
High reliability fused-in-glass
construction
APPLICATIONS/BENEFIT
APPLICATIONS/BENEFITAPPLICATIONS/BENEFIT
APPLICATIONS/BENEFITS
SS
S
Little or no Bias required.
Operates as low as 2MHZ.
Available in leaded or surface
mount packages.
UM9301SM
U
UM
M9
93
30
01
1/
/U
UM
M9
93
30
01
1S
SM
M