Wire wound type Ignition Noise Suppression Resistor
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Wire wound type Ignition Noise Suppression Resistor

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Wire wound type Ignition Noise Suppression Resistor

The Ignition Noise Suppression Resistor is a wirewound resistor crafted with precision, featuring an SMD-enabled structure. With power ratings ranging from 2 Watts to 3 Watts, it meets the power demands of various high-voltage ignition systems. The resistance values span from 1K Ohm to 5K Ohm, providing flexibility in circuit design. Compared to traditional chip resistors, the Metal Electrode Leadless Face (MELF) package offers exceptional heat dissipation capabilities, quickly dissipating generated heat to prevent overheating. Additionally, its mechanical structure is more robust and durable, granting the ignition noise suppression resistor outstanding resistance to vibration and thermal shock. Therefore, this resistor is specifically designed for high-voltage spark ignition systems in vehicles such as cars, aimed at effectively suppressing noise generated during the ignition process and enhancing the stability and reliability of the ignition system.

TypeBody Length (L, mm)Body Diameter (D, mm)Cap Length (B, mm)
1/2W10.5 ± 0.54.0 ± 0.51.6 ± 0.3
2W16.0 ± 1.04.5 ± 0.72.2 ± 0.3
2W18.5 ± 1.04.5 ± 0.72.2 ± 0.3
3W22.5 ± 1.54.5 ± 0.72.2 ± 0.3
Nominal Power Rating at 70°CMaximum Working Voltage*Maximum Surge LoadMinimum ResistanceMaximum ResistanceResistance ToleranceAvailable Resistance Values
1/2W√(PxR)25kV/10ns1kΩ2kΩ-5% ~ +20%E-6/E-24
2W√(PxR)35kV/20ns1kΩ3kΩ-5% ~ +20%E-6/E-24
2W√(PxR)50kV/20ns1kΩ5kΩ-5% ~ +20%E-6/E-24
3W√(PxR)50kV/30ns1kΩ5kΩ-5% ~ +20%E-6/E-24
CharacteristicsLimits
Dielectric Withstanding Voltage, VAC or DC500
Temperature Coefficient, PPM/°C*±300
Operating Temperature Range, °C-40 ~ +180
Insulation Resistance, MΩ10⁴
Inductance Range, 2 MHz, μH5 to 50
Failure Rate in Time, pcs/10⁹ device hours<1

  • Not applicable to all resistance values. Please check with us regarding the PPM of specific resistance value(s).


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In addition to Wire wound type Ignition Noise Suppression Resistor, we also focus on the following resistors:
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