Close this search box.



How We Cut Inrush Current Draw By Half – Or More – With SmartHeat SLT

Precision is a big part of temperature control. Engineers need heating systems that can keep critical devices operating at optimal temperatures, from in-flight sensors on planes and spacecraft to respiratory equipment at a patient’s bedside. That’s what makes inrush a potential problem in highly precise applications.

Inrush currents – the quick power draw when a self-limiting heater is powered on – can be damaging to heaters and equipment. To discover new ways of reducing inrush currents during the power-on sequence, we conducted three experiments with our SmartHeat SLT heaters, utilizing three different strategies to measure how effective each method was at reducing inrush current concerns.

You can read more about our inrush current mitigation experiments by downloading our new whitepaper here:


WHITEPAPER: Controlling Inrush Currents in SmartHeat SLT Heaters


Inrush current draw is especially problematic in applications below -55°C (like aerospace), but it can have an impact almost anywhere industrial heating is used. At up to 20 times higher than steady-state currents, inrush currents can trip circuit breakers, short devices, consume excess power, and add to equipment downtime. Our experiments produced one method that cut inrush current by half, and another that brought it down to just 1 Amp.

Read the whitepaper above to find out more about our experiments and how you can extend the life and efficiency of your heaters with SmartHeat. The minds at Minco are always looking for innovative ways to engineer solutions to immediate challenges – and you can find out all about our engineer-to-engineer (E2E) approach in our free ebook here.


Related Posts

#Flexible Heaters #Minco


Sign up to get Minco news.

By submitting this form, you are consenting to receive marketing emails from: Minco, 7300 Commerce Lane, Minneapolis, MN, 55432, US, You can revoke your consent to receive emails at any time by using the SafeUnsubscribe® link, found at the bottom of every email. Emails are serviced by Constant Contact.

Recent Blog Posts


For more than 60 years, Minco has designed and manufactured heating, flex circuit, temperature sensing and instrumentation solutions for some of the world’s most demanding applications.


Address a specific design challenge or customize fully integrated solutions with Minco’s proven product lines.

Thermal performance for standard and custom use cases — from environment stabilization to faster thermal cycling.

Accurately sense and measure temperature, humidity and fluid levels across a wide range of applications.

Achieve new design freedom with flex circuit solutions that improve reliability in a condensed package size.

System-matched controllers complement Minco sensors and heaters to deliver improved system accuracy.

Leverage decades of engineering expertise to design integrated solutions that enhance performance and reduce cost.
Learn more about Minco’s approach to design innovation – and consider joining the team.