RADISYS 459826-002 PCB Assembly – FX-301 869-8099-003B

RADISYS 459826-002 PCB Assembly 869-8099-003B with FX-301 — Embedded Control Architecture for Mission-Critical Industrial Platforms

The RADISYS 459826-002 is a full-format industrial PCB assembly carrying assembly code 869-8099-003B and integrating the FX-301 processor sub-module (P/N: 0020-23259). Board dimensions are 450 mm × 190 mm. This assembly occupies a defined slot in RADISYS-based chassis architectures and serves as the primary compute and I/O arbitration layer in embedded industrial control, telecommunications infrastructure, and process automation platforms.

Unlike commodity server boards, the 459826-002 is engineered to operate continuously in environments where thermal cycling, vibration, and EMI are routine — not exceptional. The FX-301 sub-module is factory-integrated and calibrated as a unified assembly, eliminating field-level processor seating errors that commonly cause intermittent faults in maintenance-replaced boards.

Real-time Stock & RFQ: [email protected] | WhatsApp: +86 18359268345

Technical Parameters

Hardware Logical Analysis

The 459826-002 assembly is built around the FX-301 processor module, which functions as the central arbitration engine for the host platform’s compute and I/O subsystems. Several hardware design decisions distinguish this board from generic embedded assemblies:

Backplane Bus Architecture: The board interfaces with the RADISYS chassis backplane through a high-density connector that carries both data and power distribution. The backplane topology in RADISYS platforms typically implements a passive star or daisy-chain bus, with the FX-301 acting as the bus master. This means the 459826-002 directly controls slot arbitration timing — a failure on this board does not merely drop one I/O channel; it can halt the entire chassis communication fabric.

EMC Design: Industrial PCB assemblies of this class implement multi-layer ground plane separation between analog and digital domains. Signal traces on the 459826-002 are routed with controlled impedance to suppress reflections at high switching frequencies. Decoupling capacitors are placed at the power entry points of each major IC to suppress conducted emissions — a standard requirement for CE and FCC Class A compliance in industrial environments.

Thermal Management: The FX-301 sub-module generates localized heat at the processor die. The 459826-002 assembly relies on forced-air cooling from the host chassis fan tray. Thermal interface material between the FX-301 heatspreader and any chassis-mounted heatsink must be verified during replacement — degraded TIM is a common cause of thermal throttling and unexpected resets in aging systems.

Watchdog and Fault Detection: RADISYS embedded platforms of this generation incorporate hardware watchdog timers at the board level. If the FX-301 fails to service the watchdog within the configured timeout window, the board asserts a reset signal to the chassis management controller. This prevents silent hangs — a critical requirement in unattended process control installations.

Memory Subsystem: The FX-301 module integrates its own memory controller, isolating DRAM timing from the main backplane clock domain. This architecture reduces susceptibility to backplane-induced jitter on memory read/write cycles, which is particularly relevant in high-vibration environments where connector contact resistance can fluctuate.

System Integration Benefits

• Drop-in Mechanical Fit: The 450 mm × 190 mm form factor and RADISYS-standard backplane connector ensure zero mechanical rework during replacement — critical when minimizing downtime in production environments.
• Unified Assembly Calibration: The FX-301 (0020-23259) is factory-integrated and tested as a single assembly with the 459826-002 baseboard. Field-separated procurement of sub-module and baseboard introduces calibration risk that this unified assembly eliminates.
• Deterministic Bus Arbitration: As the backplane bus master, the 459826-002 enforces deterministic slot access timing, which directly supports real-time control loop execution in the host system.
• Hardware Watchdog Integration: Board-level watchdog logic provides autonomous fault recovery without requiring software intervention — improving system availability in unattended installations.
• Firmware Traceability: Each 459826-002 unit carries assembly code 869-8099-003B, enabling precise firmware version matching against the host chassis service manual — eliminating guesswork during maintenance.
• Broad Application Compatibility: Validated for use in industrial embedded computing, SCADA controller boards, HMI platforms, telecommunications infrastructure, and medical diagnostic systems.
• Reduced Integration Risk: Using the original RADISYS part number eliminates the compatibility validation burden associated with third-party substitutions in safety-rated or certified systems.
• Extended Operational Life: Industrial-grade component selection on the 459826-002 supports continuous 24/7 operation across the rated temperature range, consistent with RADISYS platform design intent.

Quality Assurance & Global Logistics

Sourcing Integrity: Every RADISYS 459826-002 unit stocked at siemensplc.com is sourced from verified industrial surplus channels or authorized distribution. Units are not reconditioned from field-failed boards. Each assembly is visually inspected for physical integrity — connector pin condition, PCB surface, component seating — before being accepted into inventory.

Functional Verification: Prior to shipment, boards undergo power-on functional testing where applicable. Test records are available upon request for critical-application procurement.

Packaging: Boards are shipped in anti-static shielding bags, placed in foam-lined cartons with moisture barrier protection. Connector ports are capped to prevent contamination during transit. This packaging standard is maintained regardless of destination.

12-Month Warranty: All new original units carry a 12-month warranty from the shipment date. Warranty coverage includes replacement for confirmed manufacturing defects or DOA units. Warranty claims are processed within 5 business days of receipt of the returned unit.

Global Express Logistics from Xiamen, China: Our warehouse is located in Xiamen, Fujian Province — a major international logistics hub with direct DHL, FedEx, and UPS express routes to North America, Europe, Southeast Asia, the Middle East, and Australia. Standard express transit times:

• Europe (DE, UK, NL, FR): 3–5 business days via DHL Express
• North America (US, CA): 3–5 business days via FedEx International Priority
• Southeast Asia (SG, MY, TH): 2–3 business days via DHL or FedEx
• Middle East (AE, SA): 4–6 business days via FedEx
• Australia / New Zealand: 4–6 business days via DHL Express

Full export documentation — commercial invoice, packing list, and HS code declaration — is prepared for every international shipment to ensure smooth customs clearance. Tracking numbers are provided within 24 hours of dispatch.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
Location: Xiamen, Fujian, China
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