DS3800NGRA1J1D | New Surplus GE Turbine Control Board

Description

Product Introduction

The DS3800NGRA1J1D is the neutron-hardened version of the general-purpose remote adapter with the highest level of environmental protection—the NGRA built for installations where neutron radiation, humidity, and physical shock are all concerns. The suffix tells the story: the first “1” indicates a hardware revision with improved signal conditioning. The “J” specifies neutron-hardened components rated for 10^13 n/cm² fluence, with neutron-absorbing shielding on the PCB. The second “1” adds enhanced diagnostic features. The final “D” is the military-grade environmental package: triple-layer conformal coating with UV protection, hermetically sealed components, and MIL-STD-810G shock/vibration tolerance. This board was designed for the most extreme neutron radiation environments—nuclear reactors, particle accelerators, and military installations.

The neutron-hardened components (10^13 n/cm² fluence) and neutron-absorbing shielding ensure the board survives in neutron-rich environments. The triple-layer coating and MIL-STD-810G rating protect against humidity, salt spray, shock, and vibration. Compare this to the NGRA1J1C (same neutron hardening and diagnostics, but dual-layer coating without military-grade shock/vibration tolerance). The 1J1D adds MIL-STD-810G certification.

Key Technical Specifications

Compatible Replacement Models

Frequently Asked Questions (FAQ)

What’s the difference between the NGRA1J1D and the NGRA1J1C?
The 1J1D adds military-grade components, triple-layer conformal coating, and MIL-STD-810G shock/vibration tolerance. The 1J1C has dual-layer coating and standard industrial components. The 1J1D is for installations where shock and vibration are concerns—turbine decks, shipboard installations, or military ground vehicles.

What’s the triple-layer coating?
The first layer is a standard acrylic conformal coating. The second layer is a silicone-based coating that adds flexibility and thermal shock resistance. The third layer is a urethane topcoat with UV protection—it’s harder and more abrasion-resistant than the acrylic. The combination protects against humidity, salt spray, corrosive gases, and mechanical abrasion.

What’s neutron-absorbing PCB shielding?
The board has a layer of boron-impregnated material on the PCB that absorbs thermal neutrons, preventing them from reaching the sensitive components. This is a specialized feature of the “J” suffix.

What’s the neutron event LED?
The Neutron Event LED indicates that the board has detected a neutron radiation event. The board logs neutron events and can recover from neutron-induced single-event effects.

What’s the radiation tolerance of this board?
The board is rated for 10^13 n/cm² fast neutron fluence and 100 krad gamma total dose. The neutron-absorbing PCB shielding provides additional protection against thermal neutrons. The board includes MIL-STD-461G EMP protection.

Do I need to upgrade my DMP firmware for the enhanced diagnostics?
The enhanced diagnostics and neutron event logging require DMP firmware v3.0 or later. We can provide the firmware EPROMs if you need them.

How is the NGRA configured?
The NGRA is configured via jumpers on the board or through firmware settings. If you’re replacing a failed NGRA, photograph the jumper settings before removing the old board.

Can I hot-swap this board?
No. Mark IV backplanes are not hot-swappable. Power down the cabinet, lock out the breaker, and wait 60 seconds before removing or installing the board.

What’s your warranty and lead time?
We stock the NGRA1J1D in limited quantities. Lead time is 2-3 business days. We offer a 2-year warranty. We test every board with a 48-hour burn-in, a thermal cycle (-55°C to +85°C), and a full diagnostic verification. The test report is included.

Is this board compatible with the Mark VIe?
No. This board is for Mark IV systems only. The backplane architecture is different.

Motorola MVME 374-1
Seidel MV65WKS-CE310/22PB
TRICONEX 3625C1