Moxtek TUB00083 Integrated 50 kV Microfocus X-ray Tube

Overview

The Moxtek TUB00083 is a compact, integrated microfocus X-ray tube engineered for precision in portable and benchtop X-ray fluorescence (XRF), energy-dispersive X-ray spectroscopy (EDS), and transmission-based X-ray imaging systems. Unlike conventional X-ray sources requiring external high-voltage generators and complex cooling infrastructure, the TUB00083 embeds a solid-state high-voltage power supply directly within its hermetically sealed ceramic-metal housing—enabling true plug-and-play operation with low-voltage DC input. Its operation relies on thermionic electron emission from a tungsten filament, accelerated across a vacuum gap to strike a selected anode target (Ag, W, or Rh), generating characteristic X-ray spectra via bremsstrahlung and line emission. With a stable, digitally regulated output across its full 4–50 kV range and current control down to sub-microamp resolution, the tube delivers high spectral reproducibility essential for quantitative elemental analysis and calibration-critical applications.

Key Features

• Integrated HV architecture: Eliminates external HV cables, grounding loops, and EMI-sensitive interconnects—reducing system footprint and improving long-term stability.
• Microfocus performance: 400 µm nominal focal spot enables high spatial resolution in X-ray imaging and localized excitation in micro-XRF mapping.
• Low-power DC operation: Accepts only 6–12 VDC input, compatible with battery-powered field instruments and embedded OEM platforms.
• Thermally optimized design: Passive conduction cooling supports continuous operation at rated power without forced air or liquid cooling.
• Modular anode selection: Interchangeable Ag, W, and Rh targets allow optimization of excitation efficiency for specific element ranges (e.g., Ag for light elements up to Ca; Rh for mid-Z elements; W for high-energy applications).
• Robust ceramic-metal construction: Hermetic seal ensures vacuum integrity over >10,000 hours MTBF under typical operating conditions.

Sample Compatibility & Compliance

The TUB00083 is designed for integration into analytical instruments compliant with IEC 61000-6-3 (EMC emissions) and IEC 61000-6-2 (immunity). Its low-voltage interface simplifies compliance with UL/EN 61010-1 for laboratory and industrial equipment. As a component-level source—not a standalone radiation-emitting device—it requires integration into a fully shielded instrument enclosure meeting local regulatory requirements (e.g., FDA 21 CFR 1020.40, EU Directive 2013/59/Euratom). No radioactive materials are used; all X-ray generation is electrically controlled and ceases immediately upon power removal. The tube meets RoHS 2015/863/EU and REACH SVHC screening standards.

Software & Data Management

While the TUB00083 itself contains no onboard firmware or digital interface, it is fully compatible with standard analog control protocols used in OEM instrumentation. Voltage and current setpoints are adjusted via 0–5 V or 0–10 V analog inputs with 12-bit DAC resolution, enabling seamless integration with LabVIEW, Python-based control frameworks (e.g., PyVISA), or proprietary DAQ systems. Real-time monitoring of tube current and voltage feedback signals supports closed-loop dose control and automated exposure sequencing. When deployed in GLP/GMP-regulated environments, instrument-level software must implement audit trails, user access controls, and calibration logging per FDA 21 CFR Part 11 requirements—functions managed externally by the host system, not the tube.

Applications

• Portable and handheld XRF analyzers for alloy verification, mining exploration, and environmental soil screening.
• Benchtop micro-XRF systems for non-destructive elemental mapping of geological thin sections, semiconductor wafers, and cultural heritage artifacts.
• Miniaturized X-ray diffraction (XRD) modules for phase identification in field-deployable mineral analyzers.
• Transmission X-ray inspection in micro-CT preclinical imaging prototypes and NDT systems for electronics and additive manufacturing QA.
• Custom OEM spectrometers requiring stable, low-drift excitation sources with rapid on/off cycling capability.

FAQ

Is the TUB00083 certified as a Class I laser product or radiation device?
No—it is a component-level X-ray source requiring incorporation into a fully compliant, interlocked, and shielded instrument. Final system certification rests with the OEM integrator.
Can the tube operate continuously at 50 kV / 200 µA?
Yes, provided ambient temperature remains ≤35°C and thermal management (e.g., heatsinking) meets Moxtek’s published derating curves. At maximum power (4 W), duty cycle should be monitored to avoid cumulative thermal stress.
What is the expected lifetime under typical analytical use?
Rated for ≥10,000 hours of operational life when operated within specified voltage/current limits and maintained per Moxtek’s handling guidelines (e.g., avoiding mechanical shock, moisture ingress, and filament overdrive).
Are replacement filaments or anodes user-serviceable?
No—this is a sealed, non-repairable module. Field replacement requires full unit exchange per Moxtek’s warranty and service policy.
Does Moxtek provide application-specific spectral data for each anode material?
Yes—detailed characteristic line intensities, bremsstrahlung continuum profiles, and absorption-edge excitation efficiencies are available in the TUB00083 Technical Datasheet (Rev. D) and Application Note AN-027.