Electronic Components Blog

Monday, 19 March 2012 10:29

Thick Film Surge Chip Resistors from KOA available in 0402 size

Thick Film Surge Chip Resistors from KOA available in 0402 size

Surge protection is becoming essential for all circuit designs. With the SG73-series, KOA offers a resistor series which has approx. 10 times pulse handling capability compared to standard flat chip resistors. Due to this outstanding pulse load capability they are suitable for protection of electronic cuircuits against extreme pulses and surges.These parts are available with ±10% or ±20% tolerance.

KOA has recently optimized the resistive material and the production process, and is able to offer the SG73 family also with tighter tolerances of ±1% and ±0.5% and with an increased power rating. The KOA SG73S-series is a special anti-surge resistor which is suitable for high peak voltages with short duration (e.g. ESD / CR discharge / rush current, etc.) The SG73P-series is a pulse-proof resistor which is suitable in case of higher power than rated power, and lower voltage than surge is applied comparatively long (e.g. gate resistor of FET, etc.).

"Strong for pulse" and "strong for surge" is a different characteristic. It is important for customers to use a proper product according to their wave-form. The new size 0402 for the SG73S and SG73P-series was now added to KOA's product portfolio. 

Related Solutions

  • Is reliability and enhanced terminal strength essential in your power application

    KOA's WK73-series has a 90° rotated design and offers several advantages compared to standard resistor footprints. A three times higher power rating in case of 0612 vs 1206 size is the most visible. This can save board space and is based on the improved heat dissipation through the solder joints. Much higher terminal strength is related to the bigger soldering area. The lower distance between the terminals, results in less expansion stress to the solder joints. The inner resistive pattern causes less temperature rise. All the above mentioned benefits combined, result in a superior reliability compared to standard flat chip resistors. The lower distance between the terminals, results in less expansion stress to the solder joints. The inner resistive pattern causes less temperature rise. All the above mentioned benefits combined, result in a superior reliability compared to standard flat chip resistors.

Supplier

  • Koa

    KOA of Japan is reputed for their high quality passive components ranging from Resistor products, PTC & NTC Themistors, Thermal Sensors, Inductors (Chip & Wire wound), Choke Coils, Toroidal Coils and Noise Suppression Components Micro Fuses

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