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An anti-surge resistor is designed so that resistive heating occurs throughout the entire volume of the resistive material, rather than generating hotspots by unevenly heating parts of it.
Trimming the value of a surge-fragile resistor by making cuts across the film is quite simple. The narrowing caused by the cut, combined with the uneven field around the cut’s tip, causes much of the heating to occur in the small region around the tip. This region will frequently overheat and switch to a higher resistance, causing the cut to grow and zip across the resistor.
Anti-surge resistors are best made without trimming. If they are trimmed, it is by the more expensive method of uniformly thinning the film rather than cutting across.
Because wire-wound resistors have more mass and thus thermal capacity than film resistors of the same steady state power, they have a much better surge rating. Although the film can heat the substrate, it can take fractions of a second for the heat to conduct, rendering it useless in the case of short pulses.
In conclusion , the resistor has been designed to withstand momentary current/heat/power spikes better than a standard resistor. Even though they both handle 1/2W continuously, a normal 1/2W resistor may die when exposed to an intense, short-term current spike, whereas an anti-surge resistor may survive.
The Global Anti-Surge Chip Resistor market accounted for $XX Billion in 2023 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
The anti-sulfur properties of the SG73-RT Pulse/Surge (Anti-Sulfur) Resistors are excellent.Surge and pulse withstanding voltage are superior to the RK73 series.Power ratings: 0.1W, 0.125W, 0.33W, 0.5W, 0.75W, 1W ASTM-809 anti-sulfuration testing passed.
ROHM Semiconductors ESR Anti-Surge Chip Resistors have an exclusive resistive element pattern and laser trimming technology that allows for significantly improved surge resistance.
These resistors are made of AEC-Q200 automotive grade parts and have a voltage range of 50V to 200V depending on the model. The ESR series from ROHM Semiconductors is ideal for high-reliability sets and circuits.
Surge resistance characteristics are significantly improved thanks to an exclusive resistive element pattern and laser trimming technology.Electrostatic discharge resistance ranging from 2kV to 5kV
