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Cylindrical High Voltage Resistors

Cylindrical Thick Film Non-Inductive High Voltage Resistor

Category: Cylindrical High Voltage Resistors

Description Specifications

The SGT series high voltage resistors are precision cylindrical column-type resistors designed for demanding applications requiring high reliability and performance. These resistors are manufactured using high-quality ceramic substrates, ensuring excellent thermal stability, mechanical strength, and long-term durability.

Technical Features

  1. Cylindrical Column Design (Thick Film, No Inductance)
    • The cylindrical design ensures high mechanical strength and large heat capacity.
    • It offers superior switching and pulse performance, making it ideal for high-voltage applications.
  2. High Thermal Stability
    • Utilizes premium ceramic substrates to maintain consistent resistance values over a wide temperature range.
  3. Precision Specifications
    • Compared to the SGP series (general-purpose resistors), the SGT series has stricter limits on maximum voltage (Vmax) and rated power, ensuring better accuracy, temperature coefficient, and long-term stability.

 

 

Specifications

Parameter
Specification
Resistance Range
100kΩ ≤ R ≤ 1GΩ; Custom orders available for values outside this range.
Tolerance
±0.1% ~ ±1%
Temperature Coefficient
±25ppm/°C (25°C ~ 105°C); Custom requirements can be accommodated.
Voltage Rating
Meets MIL-Std-202, Method 309; VCR ≤ 0.2ppm/V; Maximum 10kVDC.
Maximum Operating Temperature
225°C
Dielectric Withstanding Voltage
1000VDC
Insulation Resistance
Minimum 10GΩ
Overload Characteristics
5 times rated power, but not exceeding 1.5 times the maximum continuous working voltage for 5 seconds. ΔR ≤ ±0.20%R.
Power Endurance
At rated power of 1000 hours, ΔR ≤ ±0.25%R.
Humidity Resistance
Meets MIL-Std-202, Method 106; ΔR ≤ ±0.40%R.
Thermal Shock Resistance
Meets MIL-Std-202, Method 107, Condition B; ΔR ≤ ±0.20%R.
Coating Material
Silicone resin
Lead Wire Material
Nickel-plated tin-coated copper wire
Cap Cover Material
Silver-plated brass cap

Performance Curve

  •      
  • Power vs. Environmental Temperature : The resistor maintains its performance up to 225°C, with a linear decrease in power handling as the temperature increases beyond 100°C.

Ordering Example

Model Number
Resistance Value
Tolerance
Temperature Coefficient
SGT26
150KΩ
1%
25PPM

Scenario : Designing a high-voltage power supply for industrial equipment. Challenge : The power supply requires a stable and reliable resistor that can handle high voltages and temperatures without significant drift over time.

Solution : The SGT series high voltage resistors were selected due to their precise specifications and robust performance under extreme conditions. Specifically, an SGT26 resistor with a resistance value of 150KΩ, tolerance of 1%, and a temperature coefficient of 25PPM was integrated into the circuit.

 

Outcome : The power supply demonstrated exceptional stability and longevity, with minimal resistance drift over extended periods. The use of SGT resistors ensured that the equipment met all safety and performance standards, even under harsh operating conditions.

Conclusion

The SGT series high voltage resistors are engineered for precision and reliability, making them an ideal choice for applications requiring high voltage ratings, thermal stability, and long-term performance. Their versatile specifications and customizable options make them suitable for a wide range of industrial and electronic systems.

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