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Discontinued/Obsolete

HSN-2000 Nuclear Event Detector

Discontinued Product. Please contact the factory for the latest replacement.

Description:

Part Number(s): HSN-2000

DDC’s HSN-2000 radiation-hardened Hybrid Nuclear Event Detector (NED) senses ionizing radiation pulses generated by a nuclear event, such as the detonation of a nuclear weapon, and rapidly switches its output from the normal high state to a low state with a propagation delay time of less than 20 ns. The active low Nuclear Event Detection signal (NED) is used to initiate a wide variety of circumvention functions, thus preventing upset and burnout of electronic components. The NED output is also used to initiate both hardware and software recovery. This highspeed, 14-pin hybrid detector is used in electronic systems as a general-purpose circumvention device to protect memory, stop data processing, and drive power supply switches as well as signal clamps.

The HSN-2000 is designed to operate through three critical environments: ionizing dose rate [1012 rad(Si)/s], gamma total dose [106 rad(Si)], and neutron fluence [5 x 1013 n/cm2]. In addition, the device is designed to function throughout the transient neutron pulse. The hybrid’s discrete design ensures a controlled response in these radiation environments as well as immunity to latchup. The detection level and functionality of a sample of each HSN-2000 production lot are tested in an ionizing dose rate environment. A certificate is provided reporting the test results for the production lot.

The detection threshold of the HSN-2000 is adjustable within the range of 2 x 105 rad(Si)/s to 2 x 107 rad(Si)/s. This detection level can be preset by DDC or adjusted by the user. Less than a 30% variation in detection threshold can be expected over the entire operating temperature range.

Features:

  • Detects ionizing radiation pulses
  • Tested/certified detection threshold level
  • Adjustable circumvention period
  • 100% testable with built-in test
  • Detection threshold adjustability
  • Single +5V operation
  • Designed-in radiation hardness
  • Compliant to MIL-PRF-38534 Class H
  • Flat pack (F) or DIP (L) packages

  • Radiation Hardness Characteristics:
    • Dose Rate (operate-through): 1 x 1012 rad(Si)/sec
    • Total Dose: 1 x 106 rad(Si)
    • Neutron Fluence: 5 x 1013 n/cm2
    • Approximate Detection Range: 2 x 105 - 2 x 107 rad(Si)/sec
    • DDC’s Specified, Controlled, and Tested

Applications:

Documentation:

 Datasheet

HSN-2000 Nuclear Event Detector Data Sheet


 Whitepaper

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