
Microsemi
Lowell Division
75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748
Page 1
RoHS COMPLAINT
Copyright
2005
Rev.B, 2006-12-20
UMX5601
ULTRA LOW MAGNETIC MOMENT PIN
DIODE FOR MRI APPLICATIONS
w
M
.
DESCRIPTION
The UMX5601
TM
PIN diode series was designed to provide ultra low magnetic PIN
diodes for in bore surface coil applications associated with higher field strength (3T and
greater) MR scanners. These PIN diodes produce the minimum artifacts (magnetic field
distortions) available in the industry, today. The diodes have been tested in magnetic
fields of ±7 Tesla
.
The UMX5601 PIN diodes have a magnetic moment at 7 T of 4E-8 (J/T).
The diodes are offered in a surface mount package. The SM package utilizes a
round end cap to mark the anode. The cathode is square. The fully passivated PIN
diode chip is full face metallurgically bonded to shortened high conductive pins for
lower thermal and electrical resistances. The PIN diodes feature low forward bias
resistance and high zero bias impedance. The UMX5601 PIN diodes are
characterized at 64, 128, and 300 MHz. The UMX5601SM meets RoHS requirements
per EU Directive 2002/95/EC.
IMPORTANT:
Forthemostcurrentdata,consult
MICROSEMI
’swebsite:
www.microsemi.com
ABSOLUTE MAXIMUM RATINGS AT 25o C
(UNLESS OTHERWISE SPECIFIED)
Rating
Symbol
Value
Unit
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
V
RRM
V
RWM
V
R
100
100
100
V
RMS Reverse Voltage
Storage Temperature
V
R (RMS)
T stg
T op
75
V
oC
oC
-65 to +175
-65 to +150
Operating Temperature Non-Repetitive Peak
THERMAL CHARACTERISTICS
(UNLESS OTHERWISE SPECIFIED)
Thermal Resistance
UMX5601SM
Symbol
θ
Value
2
Unit
oC/Watt
KEY FEATURE S
Ultra low magnetic construction
SOGO passivated chip
Thermally matched configuration
RoHS compliant
1
Low capacitance at 0 V bias
Low conductance at 0 V bias
Metallurgical bond
Fused-in-glass construction
Non cavity design
Available in surface mount
package.
Compatible with automatic
insertion equipment
1-
These devices are supplied with
Silver terminations. Other terminal
finishes may be available on request.
Consult factory for details.
APPLICATIONS/BENEFITS
High B Field (3T+) in bore
APPLICATIONS:
Active or semi-active
(not passive)
MR blocking circuits
MR detuning circuits
MR disable circuits
MR receiver protector circuits
U
M
X
5
6
0
1