What is TCR Mode on a Vape?

The mechanisms of a vaping device seem to be getting more complex with each passing day. You’re not the only one who feels bogged down with the numerous modern features in a vape, which experienced vapers love to use to suit his/her interests.

But, what of novice vapers like you? How do you grasp the workings of temperature control units, puff counters, and various operating modes and use them to your advantage? 

Enter: me. We’ll take one small step at a time. In this case, allow me to cast light on the TCR mode on a vape.  

Without enough knowledge, the integration of the TCR mode to the mod may seem like a complication you could deal without; however, it is useful to those who make the most of it. The TCR mode allows you to enjoy a fine vaping session safely. 

TCR Mode in a Nutshell

You may have stumbled across the enigmatic term, TCR mode, often while vaping with your circle of friends. 

TCR stands for Temperature Coefficient of Resistance. It is regarded as one of the most useful features of a mod.

Putting it simply, TCR denotes a number that identifies how the resistance of a material changes as the temperature fluctuates. When talking about vaping devices, the TCR refers to how the coil’s (material) resistance changes as the heat increases/decreases.

Importance of TCR Mode

It is a known fact that not all materials (coil) respond the same when there is an increase in temperature. 

The type of alloy in coils is responsible for establishing the connection between resistance and potential heat. Different types of coils such as stainless steel, nickel, and titanium react differently to heat. 

Now, when you use the TC (temperature control) mode, you are asked to provide information on the type of coil you’re using. With the info, the mod identifies the ideal temperature for vaping with the specific alloy (coil) you’re using. 

For casual vapers, simply getting the mod to a particular setting (SS, Ni, Ti) to mesh well with the type of coil they’re using is adequate. However, that won’t be near enough for experienced users seeking the perfect vape setting. 

Most manufacturers have the settings of their mods fine-tuned to their own particular coils.

For instance, Company Vape Limited will have its own brand of coil heads and mods. Let’s say the company’s coils are constructed of 316 stainless steel; their mod will be fine-tuned and TCR rated for 316 stainless steel. 

Therefore, when you use the SS setting mode with the coil provided by the company, you won’t need to fiddle with the TCR. 

However, what if you use a coil made of 304 stainless steel? What if the coil you use has a different alloy? 

Without adjustments made, there will be a reduction in the production of flavorful vapor. In worst cases, your wicks can even get burnt. 

TCR Mode to the Rescue

Allow the TCR mode to save your vaping experience. To adjust your 316 stainless steel-tuned mod to work with your new 304 stainless coil, you will have to enter the TCR mode. 

Upon doing so, you will have to provide the TCR value of 304L coils. You can easily obtain the TCR values from numerous sources online. 

Take note that the values of the sources may vary. If they do, try all the values and select one that provides you the perfect vaping experience. 

For trustworthy TCR values, visit the site steam-engine.org 

To put it simply, the TCR mode allows you to adjust your mod to be as precise as possible, especially with the coils and materials that weren’t manufactured to work with your factory set mod. So, if you are experimenting with unique coils, use the TCR mode for safety purposes. 

The TCR mode can also be expertly used to adjust and control the use of e-liquid, creation of vapor, extension of battery life, and warmth of the drags. 

This mode has inadvertently facilitated the creation of new lines of coils and accessories. Calling the mode a positive innovation to vaping would be an understatement. 

Difference between TC and TCR Mode

After absorbing all the information I have laid out, I have a gut feeling that you are confused about the difference between TC (temperature control) and TCR (temperature coefficient of resistance) mode. It’s easy to get confused since both modes function similarly, processing numbers and ultimately limiting the temperature on a vape device for safety purposes. 

With the TC mode, you get an input value that is preset to function optimally with a specific coil. Meanwhile, with the TCR mode, you need to input the values yourself. This paves the way for greater temperature accuracy, allowing the device to limit the temperature even more efficiently. 


There is no need for you to know TCR values and understand the workings of the TCR mode if you intend to vape with pre-packaged coils and mods created from the same brand. 

However, if you want to wild out a bit, test your mod, and experiment with your coils, you will need to know the TCR value of coils to fine-tune your mod to the coil you use. Failure to adjust the settings in the TCR mode can spell doom for both you and your vaping device. 

In the future, capable engineers might come up with a viable solution to eliminate the need to know TCR values. There may be an automated TCR mode just around the corner. 

However, for now, you need to rely on TCR value charts and calculators to help you find the perfect vape.