UMX5601
ULTRA LOW MAGNETIC MOMENT PIN
DIODE FOR MRI APPLICATIONS
RoHS COMPLIANT
KEY FEATURES
DESCRIPTION
The UMX5601TM 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.
. Ultra low magnetic construction
. SOGO passivated chip
. Thermally matched configuration
. RoHS compliant 1
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.
. Low capacitance at 0 V bias
. Low conductance at 0 V bias
. Metallurgical bond
. Fused-in-glass construction
. Non cavity design
IMPORTANT: For the most current data, consult our website: www.MICROSEMI.com
ABSOLUTE MAXIMUM RATINGS AT 25º C
(UNLESS OTHERWISE SPECIFIED)
. Available in surface mount
package.
Rating
Symbol
Value
Unit
. Compatible with automatic
insertion equipment
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
VRRM
VRWM
VR
100
100
100
V
1- These devices are supplied with
Silver terminations. Other terminal
finishes may be available on request.
Consult factory for details.
RMS Reverse Voltage
Storage Temperature
V R (RMS)
T stg
75
V
-65 to +175
-65 to +150
ºC
ºC
Operating Temperature Non-Repetitive Peak
T op
THERMAL CHARACTERISTICS
(UNLESS OTHERWISE SPECIFIED)
APPLICATIONS/BENEFITS
Thermal Resistance
UMX5601SM
Symbol
Value
Unit
ºC/Watt
. High B Field (3T+) in bore
APPLICATIONS:
. Active or semi-active
(not passive)
θ
2
. MR blocking circuits
. MR detuning circuits
. MR disable circuits
. MR receiver protector circuits
Copyright 2005
Rev: 2010-02-03
Microsemi
Page 1
Microwave Products
75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748