A High-Performance Alternative to OHMITE Slim-Mox/Ultra-Mox Series

HVC's HVR Series high voltage thick film resistors utilize advanced ruthenium-based (RuO₂) conductive technology and 96% Al₂O₃ ceramic substrates, enabling a fully compatible replacement for OHMITE Slim-Mox, Ultra-Mox, Mini-Mox, and similar series products.

This product meets or exceeds industry standards in critical parameters such as Temperature Coefficient of Resistance (TCR ±15 ppm/°C), Voltage Coefficient of Resistance (VCR 0.1 ppm/V), and mechanical dimensions. Furthermore, HVC offers a rapid 4-week lead time, effectively addressing global supply chain bottlenecks.

1.1 Electrical Performance Parameters

• Temperature Coefficient of Resistance (TCR): ±15 ppm/°C, superior to the industry standard of ±50 ppm/°C
• Voltage Coefficient of Resistance (VCR): 0.1 ppm/V, ensuring resistance stability in high voltage applications
• Resistance Range: 100 kΩ - 4 GΩ, achieving ultra-high resistance with a single component
• Resistance Tolerance: ±1%, ±5% (standard), with customizable ±0.5% high-precision versions available
• Rated Power: 0.25W - 9W (depending on package size)
• Operating Voltage: 1.5kV - 60kV (continuous working voltage)

1.2 Materials and Process Technology

• Conductive Phase Material:* Utilizes ruthenium oxide (RuO₂) as the conductive phase.

During the 850°C high-temperature sintering process, RuO₂ particles form a stable three-dimensional conductive network with the glass phase, ensuring long-term resistance stability.

According to thick film resistor technology research, RuO₂-based resistors exhibit excellent linearity characteristics within the temperature range of -55°C to +155°C.

• Substrate Material:* 96% Al₂O₃ ceramic substrate, with purity up to 96%.

Dielectric strength of 15-20kV/mm, thermal conductivity of 20-30 W/(m·K), and a dielectric constant of approximately 9.0 (at 1 MHz), fulfilling the demands of high voltage applications. * Dielectric Strength: 15-20kV/mm, meeting high voltage application requirements * Thermal Conductivity: 20-30 W/(m·K), ensuring efficient heat dissipation * Dielectric Constant: Approx. 9.0 (at 1 MHz) * Dielectric Loss (tan δ): < 0.001 * Surface Roughness (Ra): < 0.4 μm, suitable for precision printing

2.1 Medical Imaging Equipment

High voltage power supply systems for X-ray and CT scanners place extremely stringent demands on resistors. HVC

2.2 Precision Measurement Instruments

Precision instruments such as high-voltage probes, digital multimeters, and calibration equipment require extremely high resistance accuracy and stability: - High-voltage dividers: Ratio accuracy up to ±0.1%, ratio temperature coefficient < ±5 ppm/°C - Ultra-high resistance: Single component up to 4 GΩ, reducing series connection count and parasitic capacitance - Low voltage coefficient: 0.1 ppm/V, ensuring full-range linearity - Long-term stability: Annual drift < ±0.05%

Delivery time: 4 weeks for standard models, 6 weeks for custom models.

Compared to OHMITE and Ohmcraft's 20+ week lead time, significantly shortens project cycles and helps customers bring products to market faster.

Customization capability: Based on CNC laser cutting technology, enables customization of substrates in any shape without tooling, with MOQ as low as 100 pieces.

Supports 1:1 dimensional replication, 100% compatible with existing PCB designs.

Technical support: Provides comprehensive technical support services including selection guidance, circuit simulation, and failure analysis.

Engineering team can assist customers in completing product validation and certification work.

Below is the complete series breakdown of OHMITE high voltage thick film resistors, covering Slim-Mox, Ultra-Mox, ARC2, MOX and other core product lines.

A. Slim-Mox Series (Flat Type High Voltage Resistors)

Header Description: OHMITE Part Number (Original manufacturer part number) | Power(W) (Rated power) | Working Voltage(kV) (Max voltage) | A(mm) (Length) | B(mm) (Width) | C(mm) (Lead pitch) | Thickness(mm) (Substrate thickness) | d(mm) (Lead diameter) | HVC Alternative (Corresponding HVC product)

2.2 Material

• (RuO2)： HVC 。 850°C ，RuO2 ，。Resistor -55°C +155°C ，。High Voltage，MaterialHigh Voltage。
• 96% (Al2O3) ： High VoltageResistor“”。
  • ： 20-30 W/(m·K)，Resistor，“”（Hot Spot），Resistance。
  • Tolerance： Ra < 0.4 μm。Tolerance， ±15 ppm/°C 。
  • ：15-20 kV/mm。 60kV Voltage。

3. OHMITE Model (Cross-Reference Guide)

HVC HVR Series“”， PCB 。

3.1 Slim-Mox 100 Series (/)

High Voltage：

3.2 Slim-Mox 200 Series (/Power)

High Voltage（ X ）ApplicationModelSeries：

3.3 Slim-Mox 300 Series (Power/High Voltage)

CT 、PowerModel：

4. Application

4.1 ：CT X

，High VoltageResistor： * ：±15 ppm/°C TCR ResistanceTemperature， X Voltage，。 * Features：HVR SeriesCurrent 0.1 μV/V，。 * ： 1000 ，Resistance ±0.5%，。

4.2 ：High Voltage

High Voltage： * ： 0.1 ppm/V Voltage（VCR），HVR ResistorVoltage。，Tolerance。 * ： 4 GΩ Resistance，ResistorQuantity，CapacitorHigh Frequency。

5. ：4

，“”。

• ： OHMITE Brand 20-30 ，HVC CNC ，StandardModel 4 。
• (Low MOQ)：
  • ：， 100 。
  • 1:1 ： PCB ，HVC 100% Size，“”。

6. OHMITE SeriesModel

OHMITE High VoltageThick FilmResistorSeries， Slim-Mox、Ultra-Mox、ARC2、MOX Product。

A. Slim-Mox Series（High VoltageResistor）

：OHMITE Model（）| Power(W)（Power）| Voltage(kV)（Max）| A(mm)（）| B(mm)（）| C(mm)（）| (mm)（）| d(mm)（）| HVC Model（HVCProduct）

B. Slim-Mox Series（）

：OHMITE Model（）| Power(W)（Power）| Voltage(kV)（Max）| A(mm)（）| B(mm)（）| C(mm)（）| (mm)（）| d(mm)（）| HVC Model（HVCProduct）

C. Ultra-Mox Series（Power）

：OHMITE Model（）| Power(W)（Power）| Voltage(kV)（Max）| A(mm)（）| B(mm)（）| C(mm)（）| HVC Model（HVCProduct）

D. ARC2 ResistorSeries

：OHMITE Model（）| Power(W)（Power）| Voltage(kV)（Max）| A(mm)（）| B(mm)（）| C(mm)（）| HVC Model（HVCProduct）

E. MOX ResistorSeries

：OHMITE Model（）| Power(W)（Power）| Voltage(kV)（Max）| A(mm)（）| B(mm)（）| C(mm)（）| HVC Model（HVCProduct）

7. OHMITE Model（100+）

OHMITE High VoltageThick FilmResistorStandardModel：

：Model OHMITE High VoltageThick FilmResistorStandardProduct。FE1%Tolerance，JE5%Tolerance。ModelParameters、HVC ， HVC ：sales@hv-caps.com

6.

HVC HVR SeriesHigh VoltageThick FilmResistor， OEM 。Material（RuO2 + 96% Al2O3），HVC 。

，Product 500 。，HVC 。

：sales@hv-caps.com ：www.hv-caps.com

HVC Cross-Reference（）。

6. HVC

HVR-[Series]-[Size]-[Resistance]-[]-[Power]-[Voltage]

: SLIM-MOX 102 → HVR-GFP-102-1M-F-0.5W-5kV

7. OHMITE Model

OHMITE Slim-Mox / Ultra-Mox SeriesModel（100）：