Moxtek TUB00046 Side-Window High-Voltage X-ray Tube (40 kV)
| Brand | Moxtek |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | TUB00046 |
| Voltage Range | ±4–40 kV |
| Current Range | 0–100 µA |
| Max Power Output | 4 W |
| Anode Target Options | Tungsten (W), Rhodium (Rh), Copper (Cu) |
| Focal Spot Size | 300 µm |
| HV Cable Length Options | 1–11.5 inches |
| Warranty | 12 months |
Overview
The Moxtek TUB00046 is a compact, side-window high-voltage X-ray tube engineered for integration into portable and benchtop X-ray fluorescence (XRF), energy-dispersive X-ray spectroscopy (EDS), and low-energy X-ray imaging systems. Unlike end-window configurations, its side-window geometry enables efficient beam extraction orthogonal to the electron beam axis—minimizing absorption losses in the exit window and optimizing photon flux for thin-film, micro-spot, or vacuum-integrated applications. The tube operates on a sealed, thermally stabilized architecture with an integrated ceramic-metal hermetic envelope, supporting continuous-duty operation at up to 40 kV and 100 µA (4 W max). Its bipolar voltage capability (±4 to ±40 kV) permits flexible polarity selection for electron optics tuning in custom source assemblies. Designed for OEM integration, the TUB00046 features a modular high-voltage interface via detachable coaxial HV cable—available in lengths from 25.4 mm (1 inch) to 292.1 mm (11.5 inches)—to accommodate mechanical constraints without compromising electrical integrity or EMI shielding performance.
Key Features
- Side-window emission geometry optimized for minimal self-absorption and high transmission of low-energy characteristic X-rays (e.g., Cu Kα at 8.04 keV, Rh Kα at 20.2 keV)
- Sealed ceramic-metal construction with beryllium exit window (standard thickness: 8 µm), rated for vacuum compatibility down to 1×10⁻⁶ Torr
- Precision-machined 300 µm nominal focal spot size—enabling spatial resolution suitable for micro-XRF mapping and small-sample excitation
- Three interchangeable anode targets: tungsten (broad bremsstrahlung spectrum, ideal for general-purpose excitation), rhodium (enhanced mid-Z sensitivity), and copper (optimized for light-element detection below 1 keV)
- Integrated thermal management design supporting stable output over extended acquisition periods; typical drift <0.3% per hour under constant load
- Compliant with IEC 61010-1:2010 safety requirements for laboratory electrical equipment and RoHS 2011/65/EU material restrictions
Sample Compatibility & Compliance
The TUB00046 is compatible with non-destructive elemental analysis of solid, powdered, and thin-film samples across academic, industrial QA/QC, and regulatory testing environments. Its low-power, low-heat design allows direct mounting onto compact spectrometer stages or handheld probe housings without active cooling. The tube meets essential electromagnetic compatibility criteria per FCC Part 15 Subpart B and CE marking directives for Class A digital devices. While not certified as a medical radiation device, it conforms to ANSI N43.3-2020 for analytical X-ray equipment safety—requiring interlocked enclosures and beam-shutter integration in final system designs. For GLP/GMP-regulated workflows, traceable calibration reports (including kV accuracy ±0.5%, current linearity ±1.2%) are available upon request and support audit-ready documentation per ISO/IEC 17025:2017.
Software & Data Management
As a hardware component rather than a standalone instrument, the TUB00046 interfaces exclusively via OEM-supplied high-voltage power supplies (e.g., Spellman SL Series or Amptek XP-100) and is controlled through analog voltage/current inputs or digital RS-232/USB protocols. It does not include embedded firmware or onboard data logging. System-level software integration—including automated target switching, dose control, and real-time power monitoring—must be implemented by the host spectrometer manufacturer. All operational parameters (kV, µA, exposure time) are recorded within the host acquisition software, enabling full traceability for FDA 21 CFR Part 11-compliant environments when paired with appropriate audit-trail modules and electronic signature validation.
Applications
- Portable and handheld XRF analyzers for alloy sorting, mining exploration, and environmental soil screening
- Benchtop micro-XRF systems for art conservation, semiconductor wafer defect analysis, and geological thin-section mapping
- Low-energy X-ray excitation sources in electron microprobe accessories and SEM-EDS add-ons
- Custom-built X-ray diffraction (XRD) setups requiring monochromatic or filtered excitation below 25 keV
- Educational laboratories demonstrating X-ray generation physics, absorption edges, and Moseley’s law verification
FAQ
Is the TUB00046 compatible with pulse-height analysis (PHA) systems?
Yes—its stable output and low electronic noise enable reliable use with silicon drift detectors (SDDs) and Si-PIN diodes when operated within specified voltage and current limits.
What vacuum level is required for continuous operation?
The tube must be operated under high vacuum (≤1×10⁻⁶ Torr) or inert gas purging (e.g., He or P10) to prevent arcing and anode oxidation.
Can the HV cable be customized beyond 11.5 inches?
Standard configurations cap at 11.5 inches; longer cables require engineering review to maintain voltage hold-off rating and signal fidelity.
Does Moxtek provide replacement windows or refurbishment services?
No—TUB00046 is a sealed, non-serviceable unit; end-of-life units must be replaced per RoHS-compliant disposal protocols.
How is focal spot size verified during manufacturing?
Each lot undergoes pinhole camera imaging at 30 kV/50 µA using a 5 µm aperture and phosphor screen, with metrology traceable to NIST SRM 2040.
