Technical White Paper: Performance Benchmark Comparison – HVC HVR Series vs. 3RLAB High-Voltage Resistors
Published by: HVC Capacitor Technology Center
Publication Date: February 2026
Document ID: WP-HVR-2026-02
1. Executive Summary
In high-voltage medical imaging, pulse power, and precision instrumentation applications, the long-term stability and Voltage Coefficient of Resistance (VCR) of high-voltage resistors are critical parameters determining system accuracy. While the 3RLAB brand has long held a dominant market position, recent supply chain uncertainties and lead time delays for certain models are compelling global manufacturers to seek alternative solutions that meet Form-Fit-Function (3F) standards.
This white paper aims to provide an in-depth comparison of the HVC HVR Series and 3RLAB standard products across three dimensions: electrical performance, material technology, and reliability testing. Test data indicates that the HVC HVR Series not only achieves 100% physical dimension compatibility but also demonstrates superior performance compared to competitors in terms of high-temperature drift and pulse withstand capability. This makes it an ideal choice for building a resilient supply chain.
2. Industry Background: Challenges for High-Voltage Resistors
High-voltage resistors are not simple passive components. In applications such as X-ray tubes, high-voltage dividers, and electrostatic chucks, resistors are subjected to prolonged high field stress. Engineers frequently encounter the following challenges during component selection:
- Non-linear Errors Due to VCR: Under high voltage, resistance values can decrease as voltage increases, leading to inaccuracies in voltage division ratios.
- Thermal Failure Risk: In oil-immersed or enclosed environments, heat accumulation can cause permanent resistance drift.
- Supply Chain Rigidity: Reliance on a single source often results in 12-16 week lead times, severely impacting production capacity.
3. Technical Origins: Material Advantages of the HVC HVR Series
The HVC HVR Series’ ability to serve as a highly reliable alternative to 3RLAB stems from its stringent control over fundamental material science.
3.1 Ruthenium Oxide Thick Film System
Unlike lower-end products that use carbon-based pastes, HVC exclusively employs European-imported Ruthenium Oxide (RuO2) as the conductive phase across its entire product line.
- Advantage: Ruthenium-based materials possess exceptional chemical stability, forming a stable glass phase structure after high-temperature sintering at 850°C. This fundamentally prevents resistance aging after prolonged operation.
3.2 96% Alumina Substrate
HVC utilizes high-thermal-conductivity 96% Al2O3 ceramic rods as the substrate material.
- Advantage: Compared to conventional ceramics, its thermal conductivity is enhanced by 30%, enabling rapid heat dissipation from the resistive film layer, significantly reducing “hot spot” temperatures, and thereby increasing power density.
4. Performance Benchmark
The table below presents a comparison based on HVC internal laboratory test data and publicly available datasheets:
| Key Parameters | 3RLAB (Standard) | HVC HVR Series (Alternative) | Engineering Notes |
|---|---|---|---|
| Voltage Coefficient (VCR) | < -2 ppm/V | < -0.5 ~ -1 ppm/V | HVC offers superior linearity, providing higher accuracy in high-voltage divider applications. |
| Temperature Coefficient (TCR) | ±50 ~ ±100 ppm/°C | ±25 ~ ±50 ppm/°C | HVC uses a low-drift formulation, suitable for outdoor or high-temperature oil-immersed environments. |
| Pulse Withstand Capability | Standard | Enhanced | HVC’s special laser-trimming process optimizes the film path, enabling the resistor to withstand higher-energy transient pulses. |
| Long-term Load Drift (1000h) | < 1.0% | < 0.25% ~ 0.5% | After 1,000-hour rated power testing, HVC resistance change is minimal. |
| Max Operating Temperature | +155°C | +155°C (some +225°C) | Fully meets industrial and military-grade temperature requirements. |
| Physical Compatibility | Standard Size | Drop-in Replacement | Lead pitch and body size are 1:1 compatible — no PCB redesign required. |
5. Alternative Selection Guide
To ensure a seamless replacement process, engineers are recommended to follow this 5-step verification method:
Step 1: Physical Dimension Check
- Focus: Resistor body length (L) and diameter (D).
- HVC Solution: The HVR Series offers multiple standard form factors, covering all mainstream specifications from small axial (15mm) to large tubular (300mm+).
Step 2: Dual Voltage Confirmation
- Continuous Working Voltage: Ensure Vrated ≥ Vcircuit.
- Overload Voltage: HVC products typically have short-term overload capability of 1.5× the rated voltage (5 seconds).
Step 3: Tolerance and TCR Matching
- For precision high-voltage power supply feedback loops, the HVC ±0.5% / 25ppm grade is recommended as a replacement for 3RLAB’s high-precision series.
Step 4: Parasitic Parameter Consideration (Inductance)
- High-Frequency Applications: For high-frequency pulse or fast-switching power supplies, select HVC’s “N” suffix (Non-Inductive) version, which uses an Archimedean spiral trimming process to eliminate inductance.
Step 5: Sample Benchmark Testing
- Don’t rely solely on the datasheet. HVC encourages customers to request free samples and conduct full-load thermal rise tests and voltage impulse tests under actual operating conditions.
6. Application Scenarios
The HVC HVR Series has successfully replaced 3RLAB products in the following demanding applications:
- Medical Imaging Systems: Used as high-voltage divider resistors for X-ray tubes, ensuring absolute stability of imaging voltage.
- High-Energy Physics Research: Withstands extremely high transient energy impulses in particle accelerators.
- Smart Grid Monitoring: Used in high-voltage instrument transformers and surge arrester monitoring devices, maintaining precise sampling accuracy across extreme outdoor temperature variations.
7. Conclusion
The data demonstrates that the HVC HVR Series high-voltage resistors are not merely a “backup option” for 3RLAB products — they are an “upgrade option” for superior performance.
By adopting the HVC HVR Series, manufacturers gain not only lower and more linear VCR and superior long-term stability, but also fundamentally resolve the supply chain security risks associated with single-source procurement. HVC is committed to providing global customers with a fast 3–4 week delivery cycle and full technical support, helping your products achieve the optimal balance between performance and cost.
Need a Detailed Reliability Test Report?
Contact the HVC technical support team to obtain the complete HVR Series Reliability Data Package and customized selection recommendations.
- Technical Inquiry Email: [email protected]
- Phone: +86 13689553728
- Official Website: www.hv-caps.com
Cross Reference Table
Cross Reference Table 1
| Model | Power (W) |
Working Voltage (kV) |
A Length (mm) |
B Diameter (mm) |
C Lead Diameter (mm) |
HVC Alternative Model |
|---|---|---|---|---|---|---|
| HTE15 | 0.7 | 2.5 | 15 | 5 | 0.8 | HVRBOP15 |
| HTE19 | 1.0 | 3.5 | 19 | 5 | 0.8 | HVRBOP19 |
| HTE25 | 1.2 | 5.5 | 25.4 | 5 | 0.8 | HVRBOP25 |
| HTE24 | 2.0 | 5.5 | 24 | 8 | 1.0 | HVRBSP24 |
| HTE39 | 3.0 | 10.0 | 39 | 8 | 1.0 | HVRBSP39 |
| HTE52 | 5.0 | 15.0 | 52 | 8 | 1.0 | HVRBSP52 |
| HTE76 | 7.5 | 22.5 | 76 | 8 | 1.0 | HVRBSP76 |
| HTE102 | 10 | 32.0 | 102 | 9 | 1.0 | HVRBSP102 |
| HTE127 | 12 | 40.0 | 127 | 9 | 1.0 | HVRBSP127 |
| HTE152 | 15 | 48.0 | 152 | 9 | 1.0 | HVRBSP152 |
| HS15 | 0.2 | 2 | 15 | 5 | 0.8 | HVRBOP15 |
| HS19 | 0.3 | 2.5 | 19 | 5 | 0.8 | HVRBOP19 |
| HS25 | 0.5 | 4.5 | 25.4 | 5 | 0.8 | HVRBOP25 |
| HS24 | 1.5 | 4 | 24 | 8 | 1 | HVRBSP24 |
| HS39 | 2.5 | 10 | 39 | 8 | 1 | HVRBSP39 |
| HS52 | 3.0 | 15 | 52 | 8 | 1 | HVRBSP52 |
| HS76 | 4.5 | 22.5 | 76 | 8 | 1 | HVRBSP76 |
| HS102 | 6 | 32 | 102 | 9 | 1 | HVRBSP102 |
| HS117 | 7 | 35 | 117 | 9 | 1 | HVRBSP117 |
| HS127 | 7.5 | 37 | 127 | 9 | 1 | HVRBSP127 |
| HS137 | 8 | 40 | 137 | 9 | 1 | HVRBSP137 |
| HS152 | 9 | 48 | 152 | 9 | 1 | HVRBSP152 |
| HS202 | 13.5 | 64 | 202 | 10 | 1 | HVRBSP202 |
| UR1 | 0.5 | 2 | 15 | 5 | 0.8 | HVRBOP15 |
| UR1.7 | 0.7 | 5 | 25.4 | 5 | 0.8 | HVRBOP25 |
| UR2 | 1 | 5 | 24 | 8 | 1 | HVRBSP24 |
| UR2.5 | 1.5 | 10 | 39 | 8 | 1 | HVRBSP39 |
| UR3 | 2 | 12 | 52 | 8 | 1 | HVRBSP52 |
| LTC 6-001 | 1 | 0.8 | 39 | 8 | 1 | HVRBSP39 |
| LTC 6-002 | 2 | 1.2 | 39 | 8 | 1 | HVRBSP39 |
| LTC 6-005 | 5 | 2 | 39 | 8 | 1 | HVRBSP39 |
| LTC 6-010 | 10 | 2.5 | 39 | 8 | 1 | HVRBSP39 |
| LTC 6-020 | 20 | 3 | 39 | 8 | 1 | HVRBSP39 |
| LTC 6-050 | 50 | 5 | 39 | 8 | 1 | HVRBSP39 |
| LTC 6-100 | 100 | 6 | 39 | 8 | 1 | HVRBSP39 |
| LTC10-001 | 1 | 1 | 52 | 8 | 1 | HVRBSP52 |
| LTC10-002 | 2 | 1.3 | 52 | 8 | 1 | HVRBSP52 |
| LTC10-005 | 5 | 2.2 | 52 | 8 | 1 | HVRBSP52 |
| LTC10-010 | 10 | 3 | 52 | 8 | 1 | HVRBSP52 |
| LTC10-020 | 20 | 3.5 | 52 | 8 | 1 | HVRBSP52 |
| LTC10-050 | 50 | 7 | 52 | 8 | 1 | HVRBSP52 |
| LTC10-100 | 100 | 10 | 52 | 8 | 1 | HVRBSP52 |
| LTC10-150 | 150 | 10 | 52 | 8 | 1 | HVRBSP52 |
| LTC15-002 | 2 | 1.7 | 76 | 8 | 1 | HVRBSP76 |
| LTC15-010 | 10 | 3.5 | 76 | 8 | 1 | HVRBSP76 |
| LTC15-020 | 20 | 4.5 | 76 | 8 | 1 | HVRBSP76 |
| LTC15-050 | 50 | 8 | 76 | 8 | 1 | HVRBSP76 |
| LTC15-100 | 100 | 12 | 76 | 8 | 1 | HVRBSP76 |
| LTC15-200 | 200 | 15 | 76 | 8 | 1 | HVRBSP76 |
Cross Reference Table 2
| Model | Power (W) |
Working Voltage (kV) |
L Length (mm) |
B Width (mm) |
Outer Diameter (mm) |
D Bore Diameter (mm) |
G Thread |
HVC Alternative Model |
|---|---|---|---|---|---|---|---|---|
| UT 35 | 35 | 30 | 110 | 33 | 32 | 18 | M6 | HVRPFS110 |
| UT 50 | 50 | 48 | 160 | 33 | 32 | 18 | M6 | HVRPFS160 |
| UT 70 | 70 | 65 | 210 | 33 | 32 | 18 | M6 | HVRPFS210 |
| UT 100 | 100 | 100 | 310 | 33 | 32 | 18 | M6 | HVRPFS310 |
| UT 150 | 150 | 100 | 310 | 45 | 42 | 21 | M6 | HVRPFS310 |
- Phone: +86 13689553728
- Email: [email protected]
- Official Website: www.hv-caps.com
Disclaimer: 3RLAB® is a registered trademark of its respective owners. This document is intended for technical comparison and replacement selection reference only and does not imply any affiliation between HVC and the brand.