In today's globalized high-end manufacturing sector, high voltage thick film resistors serve as core components in medical imaging (X-Ray/CT), precision high voltage power supplies, and high-energy physics equipment. The stability of their supply chain directly impacts the lifeline of complete machine delivery. For a long time, the Swiss/German brand METALLUX AG has defined the industrial standard in this field with its HVR Series (967/968/969). However, with geopolitical fluctuations and capacity strategy adjustments, over-reliance on a Single Source has led to systemic risks such as extended lead times, uncontrolled costs, and slow response to customization requests.

HVC Company (HVC Company), leveraging its deep expertise in high voltage insulation materials, has launched the HVR Series specifically designed to fill the high-end alternative gap. Based on 96% high-purity alumina substrates and ruthenium oxide (RuO₂) paste system, this series not only achieves Pin-to-Pin compatibility with METALLUX in physical dimensions, but also surpasses it in high voltage linearity (VCR), pulse withstand capability, and cost-effectiveness through its unique serpentine non-inductive printing technology and laser trimming process. This white paper will demonstrate, through in-depth technical benchmarking and application analysis, how the HVC HVR Series can be the optimal strategic choice for enterprises to build a resilient supply chain.

1. Technical Background and Industry Challenges

1.1 Criticality and Technical Thresholds of High Voltage Thick Film Resistors

High voltage thick film resistors differ from ordinary consumer-grade resistors; they must maintain long-term stability under extremely high voltage gradients (up to 10kV/mm).

• Application Scenarios: X-ray machine anode protection, high voltage divider sampling, particle accelerator discharge, etc.
• Core Pain Points: Under high voltage loads, ordinary resistors are prone to voltage coefficient (VCR) drift, partial discharge, or even film thermal breakdown. Any failure can lead to damage to expensive main equipment (such as X-ray tubes).

1.2 Systemic Risks of Single Supplier Dependence

For a long time, the METALLUX HVR series has dominated due to its high precision and stability. However, this "single source" is evolving into an invisible shackle for enterprises:

• Lead Time "Grey Rhino": METALLUX standard product lead times have routinely extended to 20-30 weeks. In the event of European factory shutdowns or raw material shortages, downstream customers face critical supply shortages.
• Customization "High Wall": High voltage applications often require non-standard resistance values (e.g., 123MΩ) or special pin configurations. The original manufacturer is unresponsive to such demands, and the minimum order quantity (MOQ) is extremely high, severely restricting R&D iteration.
• Cost "Hard Constraint": Brand premium coupled with exchange rate fluctuations keeps BOM costs high, squeezing equipment manufacturers' profit margins.

2. HVC's Solution: From "Replacement" to "Upgrade"

Addressing the above challenges, HVC Electronics did not opt for simple low-end imitation. Instead, leveraging its technical reserves from manufacturing 100kV ultra-high voltage capacitors, it performed a "dimension-reduction attack" style technical upgrade on high voltage resistors.

2.1 Core Technical Genes of the HVR Series

The HVC HVR Series (covering HVRGXP Flat Type and HVR-Tube Cylindrical Type) employs several expert-grade processes:

• Substrate Revolution: All series come standard with 96% high-purity alumina (Al₂O₃) substrates (some METALLUX products use 85%). High thermal conductivity substrates effectively reduce "hot spot" temperatures under high voltage loads, significantly enhancing long-term stability.
• Non-Inductive Serpentine Printing: Utilizes computer-optimized serpentine paths to reduce parasitic inductance to microhenry (µH) levels. Under high-frequency pulses, it exhibits pure resistive characteristics, perfectly protecting downstream switching devices.
• Low VCR Paste: An optimized ruthenium oxide (RuO₂) system controls the voltage coefficient to < 1-5 ppm/V, ensuring sampling linearity across the full range from 100V to 50kV.

2.2 In-depth Benchmark: HVC HVR vs METALLUX HVR

To intuitively demonstrate the feasibility of replacement, we selected METALLUX's three core series for Pin-to-Pin comparison:

2.2.1 Flat Style Replacement

For the METALLUX HVR 967 series, HVC offers the HVRGXP series.

For the complete online version, please refer to: METALLUX HVR Series Replacement

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

Size description: A(L)=Length, B=Width, C=Pin spacing, d=Pin diameter

2.2.2 Cylindrical Style Replacement

For HVR 968 (Precision) and HVR 969 (Power) series, HVC offers the HVR-Tube series.

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

Size description: A=Resistor body length, B=Resistor outer diameter, d=Pin diameter

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

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

3. Supply Chain and Business Value: Rebuilding Security Boundaries

Choosing the HVC HVR Series is not only a technical upgrade, but also an optimization of business strategy.

3.1 Flexible Manufacturing and Fast Delivery

As a source factory, HVC has abandoned rigid production scheduling.

• Standard Lead Time: 4-6 weeks (urgent orders can be expedited to 2 weeks), representing an 80% reduction compared to the original manufacturer.
• Customization Freedom: Leveraging laser trimming production lines, HVC can produce both standard 10MΩ and non-standard 123MΩ values, with no high MOQ threshold.

3.2 Cost Effectiveness and Service

• Cost Reduction and Efficiency: Thanks to full industry chain advantages, HVC's prices are typically 30%-40% lower than METALLUX for equivalent performance.
• Full Process Support: From selection consultation, sample testing to failure analysis, HVC provides factory-level technical support, rather than simple distributor service.

4. Conclusion: Building Supply Chain "Plan B"

Faced with METALLUX supply chain uncertainty, passive waiting is no longer wise. The HVC HVR Series provides you with a zero-risk, high-performance replacement solution through German-quality standards + domestic-speed response.

Now is the time to build your supply chain "Plan B".

5. METALLUX Complete Model Quick Reference

METALLUX HVR/HPR/HVI Series Complete Model List (64 models total):

6. HVC Part Numbering System

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

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

7. 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, HVC's replacement engineering team is ready to assist you.

We commit to providing free sample testing and factory-level technical support for all replacement projects, jointly promoting the sustainable development of high voltage technology.

Copyright Notice: This document is owned by HVC Capacitor. Reproduction or use for commercial purposes without permission is prohibited.
Disclaimer: The technical parameters in this document are for reference only. Please refer to the latest data sheet for actual specifications. METALLUX, HVR 967/968/969 mentioned in this document are registered trademarks of their respective owners and are used only for technical compatibility explanation.