Technical white paper · METALLUX HVR alternatives, materials, and model cross-reference

Executive Summary

Germany's METALLUX AG HVR Series (HVR 967 / HVR 968 / HVR 969) has long been regarded as the European benchmark for high-voltage thick film resistors, widely used in medical X-ray/CT, precision high-voltage measurement, industrial high-voltage power supplies, and high-energy physics. However, its 16–24 week lead times, high procurement costs, and unresponsiveness to non-standard customization are creating increasingly severe supply chain pressures for equipment manufacturers worldwide.

To fundamentally resolve these pain points, HVC Company, with over two decades of expertise in high-voltage passive components, has launched a Pin-to-Pin direct replacement solution for the METALLUX HVR series — the HVC HVR Series (covering flat-style HVRGXP/HVRGFP and tubular-style HVR-BSP/HVR-PFS).

This white paper systematically explains how HVC achieves comprehensive replacement of METALLUX from three dimensions: material science, key parameter benchmarking, and model cross-reference, with an engineering-verified detailed model comparison table.

1. Market Background: Three Major Pain Points of the METALLUX Supply Chain

1.1 Long Lead Times Severely Restricting Delivery

METALLUX standard products have lead times of 16–24 weeks, extending to over six months during raw material fluctuations or production line maintenance. This is fatal for modern manufacturing pursuing rapid iteration.

1.2 High Prices Squeezing Profit Margins

European manufacturing's high labor costs combined with brand premiums and exchange rate fluctuations keep METALLUX's procurement costs 30%–50% higher than equivalent Asian alternatives.

1.3 Extremely High Customization Thresholds, Slow Response

High-voltage resistors often require non-standard resistance values (e.g., 123.4 MΩ) or special pin configurations. METALLUX is nearly unresponsive to small-batch customization, with MOQs typically in the thousands, severely hindering sample acquisition during the R&D phase.

2. Core Technical Advantages of the HVC HVR Series

HVC is not a low-cost imitation but leverages material technology accumulated from high-voltage capacitor manufacturing to achieve substantive engineering upgrades in the high-voltage resistor field.

2.1 Substrate Material: 96% High-Purity Alumina (Al₂O₃)

• HVC Process: The entire series is standard-equipped with 96% high-purity alumina substrates, with thermal conductivity of 24–28 W/m·K, far superior to ordinary 85% alumina.
• Engineering Value: Lower hot-spot temperatures under high load, more uniform thermal stress distribution, significantly reduced aging drift rate, and higher mechanical strength capable of withstanding industrial-grade vibration and shock.

2.2 Conductive Paste: High-Grade Ruthenium Oxide (RuO₂) System

• HVC Process: Uses a high-grade Ruthenium Oxide paste system, precisely sintered at 850°C to form an atomic-level strong bond.
• Key Parameters:
  • Low Voltage Coefficient (VCR < 5 ppm/V): Ensures linearity across the full voltage range from low to high voltage — the core indicator for high-voltage dividers.
  • Wide Resistance Range (100Ω – 10GΩ): Single-component coverage, eliminating the need for series configurations and simplifying circuit design.
  • Precision TCR (±25 ppm/°C): Superior to METALLUX's standard 100 ppm/°C, offering better precision.

2.3 Non-Inductive Serpentine Printing Structure

The HVC HVRGXP series employs a computer-optimized non-inductive serpentine printing path, using mutual inductance principles to reduce parasitic inductance to the microhenry (µH) level, effectively suppressing waveform distortion and oscillation under high-frequency pulses, protecting expensive downstream IGBTs/MOSFETs.

2.4 Vacuum Epoxy Encapsulation for Harsh Environments

• Passes Double 85 Test (85°C / 85% RH), completely eliminating coating voids, preventing surface flashover in high-humidity environments.
• Excellent oil resistance and chemical corrosion resistance, suitable for oil-filled HV power supplies and SF6 gas-insulated switchgear.

3. Typical Application Cases

The HVC HVR series has passed rigorous field validation in multiple high-end sectors:

• Medical Imaging (X-Ray / CT): Used as anode protection resistors in high-voltage generators. The non-inductive design effectively suppresses high-frequency oscillation, protecting tube life, and has achieved successful bulk replacement of METALLUX HVR 967 series.
• High-Voltage Precision Measurement: In high-voltage dividers, low TCR (±25 ppm/°C) and low VCR (< 5 ppm/V) ensure full-range sampling linearity, adopted by multiple metrology institutes.
• Industrial High-Voltage Power Supplies: In electrostatic spray coating and dust removal power supplies, vacuum epoxy encapsulation provides moisture resistance and pulse withstand capability for reliable operation under harsh conditions.
• Research & Physics: In pulsed power systems, HVC's customization capability up to 100 kV meets extreme parameter requirements, filling the supply vacuum left by METALLUX.

4. Direct Procurement Cross-Reference List

Full online version: METALLUX HVR Series Alternative & Replacement Solution

1. High Voltage Thick Film Flat Resistor (HVR 967 Flat) → HVC HVRGXP/HVRGFP Series

Dimension notes: A(L)=Length, B=Width, C=Lead pitch (spacing), d=Lead diameter

2. High Voltage Thick Film Tubular Resistor (HVR 968) → HVC HVR-BSP Series

Dimension notes: A=Resistor body length, B=Resistor body outer diameter, d=Lead diameter

3. High Voltage High Power Tubular Resistor (HVR 969) → HVC HVR-PFS Series

Dimension notes: L=Resistor body length, B=Flange spacing, ø=Resistor body outer diameter, D=Mounting hole diameter, G=Thread specification

5. Conclusion

The long lead times and high costs of the METALLUX HVR Series Alternative Solution have become a non-negligible systemic risk in the supply chain of equipment manufacturers. HVC Company, with 96% high-purity alumina substrate + RuO₂ precision paste + non-inductive serpentine structure as the technological core, provides a complete replacement solution with standard lead times of 4–6 weeks, minimum order quantity of 50 pieces, and tolerance coverage of ±0.5%–±10%.

Whether it's the precise parameter matching pursued by engineers or the cost and lead time optimization focused on by procurement teams, the HVC HVR Series is currently the best choice for replacing METALLUX.

6. Complete METALLUX Model Reference Table

Complete model list of METALLUX HVR/HPR/HVI Series (64 models total):

7. HVC Coding Rules

HVR-[Series]-[Size]-[Resistance]-[Tolerance]-[TCR]-[Voltage]

Ordering Example: Replacement for HVR967.3.25 → HVR-GXP4.25-10M-F-25-12kV

8. Contact and Technical Support

If you are looking for replacements for discontinued METALLUX series, or have any requirements for high-voltage resistor selection or customization, the HVC replacement engineering team is ready to assist you.

We are committed to providing free sample testing and OEM-level technical support for all replacement projects, jointly promoting the continuous development of high-voltage technology.

Copyright Notice: The copyright of this document belongs to HVC Capacitor. Reproduction or commercial use without permission is prohibited.
Disclaimer: The technical parameters in this document are for reference only; specific specifications are subject to the latest version of the datasheet. METALLUX, HVR 967/968/969 are registered trademarks of their respective owners and are used only for technical compatibility statements.