A guide to the KOA Speer range of sulfur resistant chip resistors

KOA Speer produces ten series of sulfur resistant metal glaze thick film chip resistors for automotive and/or harsh industrial applications.


KOA Speer RK73-RT Series


This is a series of heat resistant, weather resistant AEC-Q200 compliant metal glaze thick film resistors featuring a triple layer electrode structure for high reliability and high stability performance.


They are available in standard EIA case sizes ranging from 0402 to 2512.


Resistance range is 1Ω to to 10MΩ and power rating is 0.03W to 2W.

KOA Speer RK73G-RT Series


AEC-Q200 compliant sulfur resistant thick film chip resistor featuring precision tolerance (down to ±0.25pF) performance.


Available in 0402, 0603, 0805 and 1206 standard EIS case sizes.


Resistance range is 30Ω to 1MΩ and power rating is 0.1W to 0.25W.


KOA Speer RS73-RT Series


AEC-Q200 compliant high reliability sulfur resistant thick film chip resistor also featuring tight tolerance (down to ±0.1pF) performance.


Reliability test returns ∆R figures of ±0.2% and ±0.5%.


Available in 0402, 0603, 0805 and 1206 standard EIA case sizes.


Resistance range is 10Ω to 10MΩ and power rating is 0.125W to 0.33W.

KOA Speer SG73-RT and SG73P-RT Series


AEC-Q200 compliant sulfur resistant thick film chip resistors able to withstand voltage and power surges.


Available in 0402, 0603, 0805, 1206 and 1210 standard EIA case sizes.


Resistance range is 1Ω to 10MΩ and power rating is 0.125W to 1W.



KOA Speer SR73-RT Series


AEC-Q200 compliant low ohmic sulfur resistant chip resistors for current sensing applications.


Available in 0402, 0603, 0805, 1206 and 1210 standard EIA case sizes.


Resistance range is 0.1Ω to 10Ω and power rating is 0.166W to 0.66W.



KOA Speer HV73-RT and HV73V-RT Series


Sulfur resistant thick film chip resistors for high voltage applications.


The HV73V-RT series is AEC-Q200 compliant.


Resistance range is 10KΩ to 51M ohm and power rating is 0.1W to 1W.


Working voltage range is 350Vdc to 3,000Vdc.



KOA Speer WK73-RT and WK73-RT Series


AEC-Q200 compliant sulfur resistant thick film chip resistors featuring wide terminal construction for high power applications.


Available in 0508, 0612, 1020, 1218 and 1225 reverse geometry case sizes.


Resistance range is 1Ω to 1MΩ and power rating is 1W to 3W.



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