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Rectangular grey thermal pad 50 by 31 millimetres point two five millimetres thick

UPSIREN

UPSIREN PCM-1 Phase Change Thermal Pad 50x31x0.25mm

SKU CH-VRS9-SAR5P

Phase-change silicone pad melts above 45 °C for even coverage and solidifies on cooling to prevent overflow, lasting two to three times longer than standard grease

Option 50×31×0.25mm

  • Phase-change material solidifies below 45 °C preventing overflow
  • Service life lasts 2-3 times longer than standard grease
  • Cut-to-size pad with no front or back simplifies replacement
  • Lab tested for better cooling on liquid coolers and GPU cores
  • Thermal impedance under .04 °C cm²/W after 1000 h at 150 °C

UPSIREN PCM-1 Phase Change Pad

The UPSIREN PCM-1 is a phase-change thermal interface material supplied as a 50x31x0.25mm pad. It transitions from solid to liquid above 45°C to fill microscopic gaps between a CPU or GPU die and the cooler base. The compound suits builders who want a reusable, non-drying alternative to traditional paste.

Check cooler flatness and mounting pressure

Because the pad is only 0.25mm thick, the mating surfaces must be flat and the mounting mechanism must supply even pressure across the die. Verify that your cooler base has no convex curvature or machining marks that would prevent full contact. The material requires a sustained temperature above 45°C for at least two hours to complete the initial phase change and achieve optimal wetting.

Solid sheet cuts cleanly and resists pump-out

The silicone-based sheet remains solid at room temperature, so it can be trimmed to exact die dimensions with scissors and handled without mess. Once cycled above the transition point, it liquefies to wet the interface, then re-solidifies on cool-down, eliminating the pump-out and dry-out common with conventional grease. Laboratory validation includes 150°C baking for 1000 hours and 1000 thermal cycles with thermal impedance below 0.04°Ccm²/W.

Highlights

  • Phase-change material solidifies below 45 °C preventing overflow
  • Service life lasts 2-3 times longer than standard grease
  • Cut-to-size pad with no front or back simplifies replacement
  • Lab tested for better cooling on liquid coolers and GPU cores
  • Thermal impedance under .04 °C cm²/W after 1000 h at 150 °C

Specifications

No published specifications for this item yet.

Other versions of this model

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Questions about this item

What is included in the box and what must be bought separately?

The package contains the 50x31x0.25mm phase-change pad only. No tools, cleaning wipes or additional thermal compound are supplied.

Which version or capacity should I choose for my CPU or GPU?

Only the 0.25mm thickness is currently available. Verify that your cooler mounting pressure and die flatness suit this single thickness before purchasing.

What does the <0.04°C·cm²/W thermal impedance mean once installed?

It indicates very low contact resistance when the pad melts above 45°C and wets the interface, but actual temperatures depend on cooler performance and mounting pressure.

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