PhaseSheet PTM

The PhaseSheet PTM is a thermal pad based on a phase change material (PCM). The pads, which are solid at room temperature, can be easily applied and liquefy during operation, allowing them to effectively dissipate heat like a thermal paste. PhaseSheet PTM is electrically non-conductive and can therefore be used in many areas, with the primary application being in processors and graphics chips.

$13.92

Content: 2000 mm² ($0.70 / 100 mm²)

Size

50 x 40 mm

EAN: 4260711991059 Copied!

MPN: TG-PS-50-40 Copied!

Product information "PhaseSheet PTM"

The phase-change material on which the PhaseSheet PTM is based is solid at room temperature. The material only begins to liquefy at temperatures above 45 degrees Celsius. A high contact pressure of around 300-400N is required for optimum distribution of the liquid PhaseSheet PTM and thus the lowest possible layer thickness. PhaseSheet PTM has a very low viscosity in its liquid state and contracts again when it changes to a solid material, thus minimizing the pump-out effect.

Properties

Outstanding thermal conductivity
Consistently high performance
Very long service life
Versatile in application
Not electrically conductive
Easy to use

The Pump-Out Effect and Performance Stability of PhaseSheet PTM

The pump-out effect is particularly pronounced when combining a copper cooler on a graphics chip because silicon and copper have different linear expansion when heated. The temperatures under load cause the heatspreader and the base plate to deform (concave or convex) and return to their original shape (straight) when they cool down. As a result, the thermal paste is slowly pressed out between the heatspreader and the base plate of the CPU cooler, for example.

PhaseSheet PTM is more durable than traditional thermal pastes, but not as durable as KryoSheet, for example, which is virtually maintenance-free.

Note

PhaseSheet PTM develops and stabilizes its maximum thermal conductivity after around ten thermal cycles above 60 degrees Celsius.

Consistently high performance

Outstanding thermal conductivity

Easy and Versatile in application

Not electrically conductive

PhaseSheet PTM

What size of PhaseSheet PTM do I need, and how do I cut it to fit?

PhaseSheet PTM is available in a 50 × 40 mm size. If necessary, cut the material to size with sharp scissors or a blade on a clean surface, avoiding stretching or creasing it. If possible, leave the protective films on the material when cutting it, and remove one side only when installing the cooler. PhaseSheet PTM can extend beyond the area to be covered without any problems. This can make application easier. The sheet does not replace thicker gap fillers around memory or voltage regulators.

Which version of PhaseSheet PTM suits my application, and what thermal conductivity and cooling performance does it offer?

PhaseSheet PTM is an electrically non-conductive phase-change material. It conforms to the contact surfaces as it heats up and requires a break-in period and suitable mounting pressure. KryoSheet and Carbonaut, by contrast, are dry, electrically conductive sheets. PhaseSheet PTM is very well suited to CPUs and GPUs, offering very good durability together with very good performance similar to Duronaut.

How long does PhaseSheet PTM last, how does it behave during temperature changes, and when should I replace it?

PhaseSheet PTM is designed for long-lasting use. It softens when heated and solidifies again when cooled. This reduces displacement from the contact area during temperature changes, known as pump-out. Replacement is generally unnecessary even after many years.

Is PhaseSheet PTM suitable for laptop CPUs and GPUs?

PhaseSheet PTM may be suitable for CPU or GPU contact surfaces in a laptop, provided the cooler sits flat and the available mounting pressure is sufficient. PhaseSheet PTM needs several thermal cycles before its performance stabilizes. It does not replace the thicker thermal pads on VRAM or VRMs.

How do I install and position PhaseSheet PTM and remove the protective films?

Cut PhaseSheet PTM to size if necessary. Carefully peel off one protective film, place the material on the cleaned contact surface, then remove the second film. It may help to press PhaseSheet PTM onto the surface before peeling off the second film. No film residue must remain on the sheet before the cooler is fitted. Peel the films off slowly without stretching the material excessively. Small tears in the surface are not a problem. You can also join a torn surface back together. This generally does not affect performance. Then lower the cooler straight into place without sliding it sideways. Do not use additional paste, adhesives or oils to make it stick.

Can I combine PhaseSheet PTM with thermal paste, liquid metal or other thermal interface materials?

Use PhaseSheet PTM as the sole thermal interface material between the two contact surfaces. An additional layer of paste or liquid metal is not intended and may impair heat transfer or mechanical fit.

What mounting pressure does PhaseSheet PTM require, and is it suitable for uneven contact surfaces?

Heat and mounting force make PhaseSheet PTM thinner, allowing it to conform to small surface irregularities. A mounting pressure of 0.2 N/mm² or higher is ideal. This specification is not a screw tightening torque. The permissible forces for the CPU, GPU and cooler must not be exceeded. It cannot compensate for larger gaps or tilted contact surfaces.

Why are temperatures with PhaseSheet PTM too high or higher than expected?

Check the size and position of PhaseSheet PTM, ensure the contact surfaces are clean, and verify the cooler's seating and mounting pressure. Also check the fans or pump (for liquid cooling), and compare temperatures at the same room temperature and power consumption. Both protective films must be removed. Assess cooling performance only after the specified thermal cycles. It can take more than ten thermal cycles to reach maximum performance. The phase change, and therefore the thermal cycle, begins at around 45 °C. For the break-in period, however, the pad should be heated to above 60 °C and then allowed to cool again. These values refer to the pad temperature, not the CPU or GPU core temperature. Follow the cooler manufacturer's specified mounting forces. Tightening further does not compensate for an incorrect setup.

Is PhaseSheet PTM suitable for direct-die cooling or a delidded CPU?

PhaseSheet PTM is very well suited to exposed GPU dies. For delidded CPUs, the specific cooling solution is also a deciding factor. For direct-die coolers and the underside of the High Performance Heatspreaders, we recommend liquid metal. Due to the low mounting height, these products cannot be combined with every sheet.

How do I remove PhaseSheet PTM or clean the contact surfaces?

With the system disconnected from power, carefully remove PhaseSheet PTM residue using a lint-free cloth such as TG Cleaning Wipes and a cleaner suitable for the contact surfaces, such as isopropyl alcohol. Clean both sides completely and let them dry before installing a new sheet. Do not use a metal blade on an exposed die.

Does PhaseSheet PTM require warm-up cycles or a break-in period?

Yes. The phase change, and therefore the thermal cycle, begins at around 45 °C. For the break-in period, however, the pad should be heated to above 60 °C and then allowed to cool again. Performance stabilizes after approximately ten of these thermal cycles. Depending on the setup, additional cycles may be required. The temperature values refer to the pad, not the CPU or GPU core temperature. Use normal, controlled load changes and cooling phases within the hardware's permissible temperature limits. A comparison made immediately after installation is not yet meaningful.

Can I continue using PhaseSheet PTM if it is torn, creased or damaged?

Small areas of damage and tears in PhaseSheet PTM can be compensated for during the phase change, provided the entire contact area remains covered without gaps. You can easily fit missing pieces back into place. Make sure the surface is completely covered.

What is included with PhaseSheet PTM, and how can I obtain missing parts?

The package contains PhaseSheet PTM in the selected size and the instructions. No other accessories are included.

What temperature range and extreme conditions is PhaseSheet PTM suitable for?

The operating temperature range for PhaseSheet PTM is −75 to +150 °C. The phase change only begins above approximately 45 °C. Also observe the temperature limits of the CPU, GPU, cooler and all adjacent materials.

Is PhaseSheet PTM electrically conductive, and how do I prevent short circuits?

PhaseSheet PTM is not electrically conductive. Nevertheless, it should be neatly installed within the intended contact area. It is not a problem if PhaseSheet PTM covers other components such as SMDs or electrical contacts.

Where can I find instructions, datasheets and safety or compliance documentation for PhaseSheet PTM?

Available instructions, technical data sheets, safety data sheets and conformity documents for PhaseSheet PTM can be found in the downloads section of the product page. Check the exact product name and item number. A technical data sheet does not replace a safety data sheet. If a document or language version is missing, tell us the item number and which document you need.

Downloads "PhaseSheet PTM"

Color:	gray
Operating temperature:	-75°C to +150°C

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