KOA Speer Launches Durable Heat Shock Resistors
The new RK73B-AT series features a reinforced electrode design built to survive thousands of thermal cycles.
Updated on Oct. 26, 2026 in Semiconductors
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KOA Speer Electronics has released the RK73B-AT resistor family, designed to provide superior heat and weather resistance for industrial applications. The components utilize a specialized metal glaze film to improve product lifespan.
Why it matters
The resistors are engineered to withstand extreme thermal fluctuations that typically cause failures in standard components. By increasing resilience to thermal shock, the design aims to significantly extend the life expectancy of electronic systems.
The RK73B-AT resistors range in size from 0402 to 1206 with power ratings of 0.1W to 0.25W and resistance values spanning 1 to 22MΩ. These components feature a thicker bottom electrode and a metal glaze film to prevent cracking and delamination.
The players
KOA Speer Electronics
KOA Speer Electronics is a global manufacturer of passive electronic components specializing in resistors, inductors, and fuses.
The details
Engineered with a thicker bottom electrode, these resistors suppress the cracking and delamination often triggered by thermal shock. The series maintains a temperature coefficient of resistance between plus or minus 200ppm/°C and 400ppm/°C.
Timeline
The product information was released on October 26, 2026.
The Tech Race
This release moves beyond standard chip resistors by prioritizing physical durability in extreme environments. It represents a specialized segment of the electronics market where increasing component longevity is critical for long-term system reliability.
Engineers and product designers can now source these resistors with an eight-week lead time to improve the thermal stability of their electronics. This allows for more robust device construction in industries that face significant heat and weather variations.
The takeaway
Reliable thermal management is essential for extending the functional life of modern electronic equipment. Adopting components rated for higher cycle counts can reduce long-term maintenance costs and component failure rates in demanding environments.
Further reading
For more developments in component engineering, explore the Semiconductors section.
Source note: This article includes information reported by Electronics Weekly.
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