MA44781

Anti-Parallel for MRI

The MA44781 device acts as a passive switch using silicon PIN diodes in a surface mount package. There are two sets of two PIN diode pairs constructed in opposing configurations. The package is sealed with a non-conductive epoxy resin and is suitable for surface mount applications. The MA44781 device is well suited for MRI passive switching applications. The PIN diodes become a high Q, R-C network under small signal and behave as an effective passive rectifier or short circuit under high RF signal to tune and de-tune the resonant MRI tank circuit. The anti-parallel doublet arrangement provides for more efficient RF power handling.

Product Specifications

Part Number
MA44781
Short Description
Dual Pair Anti-Parallel Non-Magnetic PIN Diode
Breakdown Voltage, Minimum(V)
60
Resistance(Ohm)
0.80
Total Capacitance(pF)
1.500
Lifetime(nS)
200
CW Power Dissipation(W)
1.7
Package
ODS-1134
Package Category
Ceramic Surface Mount
Min Frequency(MHz)
10
Max Frequency(MHz)
1000

Features

  • Designed for MRI Applications
  • RoHS* Compliant
  • 260°C Reflow Compatible
  • SPC Process for Superior Parametric Repeatability
  • Anti-Parallel Self Bias Arrangement
  • Non-Magnetic Surface Mount Package

Applications

  • ISM

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MA44781
Diode,Varactor,Bonded,Stripline,Si
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