Summary of HSN-1000 NUCLEAR EVENT DETECTOR
DDC’s HSN-1000 is a 14-pin, radiation-hardened hybrid Nuclear Event Detector that senses ionizing radiation pulses from nuclear events and switches its output low within <20 ns to initiate circumvention functions, protecting electronics and enabling recovery. It is guaranteed across extreme ionizing dose rate, total gamma dose, and neutron fluence environments, is lot-qualified and individually tested/certified, and features adjustable detection threshold and circumvention period, single +5V operation, built-in testability, and MIL-PRF-38534 Class H compliance.
Parts used in the HSN-1000 Nuclear Event Detector:
- 14-pin hybrid package (flat pack F or DIP L)
- Internal radiation-sensing discrete components (hybrid discrete design)
- Built-in test circuitry
- Adjustable detection threshold components (user-adjustable or preset by DDC)
- Output switching circuitry capable of active low NED signal
- +5V power supply interface
- Serialization and test certificate labeling
DDC’s HSN-1000 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 20ns. 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 high-speed, 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-1000 is guaranteed 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. Each HSN-1000’s detection level and functionality are tested in an ionizing dose rate environment. A certificate is provided with each serialized hybrid, reporting the radiation test results and guaranteeing its performance. The device is also lot qualified in the total dose and neutron environments to ensure performance.
The detection threshold of the HSN-1000 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
- 100% tested/certified detection threshold level
- Adjustable circumvention period
- 100% testable with built-in test
- Detection threshold adjustability
- Single +5V operation
- Radiation hardness guaranteed
- Compliant to MIL-PRF-38534 Class H
- Flat pack (F) or DIP (L) packages
Read more: HSN-1000 NUCLEAR EVENT DETECTOR
- What does the HSN-1000 detect?
It detects ionizing radiation pulses generated by a nuclear event. - How fast does the HSN-1000 switch its output after detection?
It switches its output from high to low with a propagation delay time of less than 20 ns. - Can the detection threshold be adjusted?
Yes, the detection threshold is adjustable within 2 x 105 rad(Si)/s to 2 x 107 rad(Si)/s and can be preset by DDC or adjusted by the user. - What environmental radiation levels is the HSN-1000 guaranteed to operate through?
It is guaranteed through ionizing dose rate 1012 rad(Si)/s, gamma total dose 106 rad(Si), and neutron fluence 5 x 1013 n/cm2. - Does each HSN-1000 come with test results?
Yes, each serialized hybrid is tested in an ionizing dose rate environment and shipped with a certificate reporting the radiation test results. - What supply voltage does the HSN-1000 use?
It operates from a single +5V supply. - Is the HSN-1000 immune to latchup?
Yes, the hybrid discrete design ensures immunity to latchup. - Can the HSN-1000 be tested in-system?
Yes, it is 100% testable with built-in test functionality. - What package options are available for the HSN-1000?
It is available in flat pack (F) or DIP (L) packages. - What standards compliance does the HSN-1000 meet?
It is compliant to MIL-PRF-38534 Class H.
