Product Detail

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.
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
Specifications
  • Resistance: 0.8 Ohm
  • Total Capacitance: 1.5 pF
  • Total Capacitance: 1.5 pF
  • CW Power Dissipation: 1.7 W
  • Min Frequency: 10 MHz
  • Breakdown Voltage, Minimum: 60 V
  • Lifetime: 200 nS
  • Max Frequency: 1,000 MHz
Package
  • ODS-1134
Package Category
  • Ceramic Surface Mount
Part Number Package MACOM Richardson RFPD DigiKey Mouser
MA44781
Diode, Varactor, Bonded, Stripline, Si
ODS-1134
In Stock: 9915
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In Stock: 58
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