Space PadTM Space Pad<sup>TM</sup> Icon

The standard for space. This TRL9 qualified, no-compromise TIM is in orbit, cooling satellites big and small.
Meet Space Pad

Space PadTM vs. convention

Space Pad
Gap Pad
(51 x 51 mm², bolted joint)
(Very large bolted joint)
(ASTM D395)
11,000 W/m²K
3000 W/m²K Structured Space Pad
(508 x 355 mm² interface)
12 W/mK 200 W/mK
Option of SS200 for improved heat spreading 1200 W/mK


Select from as thin as grease to as thick as graphite

Consistent performance. Robust in the harshest environments. Performance may increase as aligned Carbice Nanotubes settle and further lower resistance.

Negligible. Carbice Nanotube hair maintains rebound capability over time & cycling.

9,500 W/m²K 450 W/m²K
(200 x 146 mm² interface)
0.70 W/mK Negligible

Horizontal only


Performance decreases. Grease dries and pumps out.

100% compression set. No rebound.

7,100 W/m²K 340 W/m²K
(200 x 146 mm² interface)
0.3 W/mK Negligible

Horizontal only

Thin to medium

Performance decreases. Develops air voids and can cause inconsistent installation.

100% compression set. No rebound.

7000 W/m²K Typically not used 1 – 20 W/mK Negligible



Performance may decrease. Can de-wet under cycling due to compression set. Loses structural integrity under high pressure (eg bolts).

Low to moderate. Hard pads: 1 – 5%. Soft pads compress more but can set up to 40%.

7,800 W/m²K Typically not used 5 – 10 W/mK 120 – 1800 W/mK



Consistent performance. Unless the brittle film tears/breaks under the stress of thermal expansion or interface movement/vibration.

Low to moderate. 3 – 15%

Customizable specs to ensure your product performs. Build yours today.

Carbice product platforms are versatile, reliable, easy to install, and stable over time. Tell us about your project and see which Carbice product could solve your thermal needs.

Case Study
Large Bolted Interface
Case Study
Traveling-Wave Tube Amplifier (TWTA)
Case Study
Large Bolted Interface

Space Pad™ cools Large Bolted Interfaces better, with confidence

Spacecraft face the harshest environments for thermal management, with intense radiation, large temperature variation, and limited ways for heat to move.

Machining errors and bowing issues make large bolted interfaces non-uniform.

Thermal conductance maps of a 204 x 146 mm² large bolted interface using liquid TIMs: LSR (A) and grease (B). Extracted from thermal vacuum (TVAC) test results.[1]

In reality, large bolted interfaces have thermal gradients even with liquid TIMs.

Digital transformation of satellite design with Carbice
Carbice SIM predicts Space Pad performance with >90% accuracy.

For conventional TIMs, simulated performances could mismatch TVAC results by >50%. On the contrary, performance of Space Pad can be accurately simulated by our modeling tool - Carbice SIM.

Thermal conductance maps using Space Pad (SP125x-1S) for a 508 x 355 mm² large bolted interface: Carbice SIM result (C) and TVAC test result (D). Difference originates from non-uniform heating with discrete heaters used for TVAC test.



TVAC result and Carbice SIM result of Space Pad compared to minimum thermal requirement from customer for a 508 x 355 mm² large bolted interface.


  • Space Pad outperforms liquid TIMs and exceeds customer thermal requirement for large bolted interfaces.
  • TVAC result of Space Pad matches Carbice SIM result within ±10%.

Game changing customization
Structured Space Pad™

We can map and model your entire interface to create Structured Space Pad customized for your large bolted interface. For instance, when you have a hotspot, you can force better contact with Structured Space Pad.

Structured Space Pad for a 508 x 355 mm² large bolted interface. Photo (E) and the Carbice SIM simulated local thermal conductance map (F) of the Structured Space Pad.


TVAC tested result and Carbice SIM predicted result of Structured Space Pad compared to the minimum thermal requirement from customer for a 508 x 355 mm² large bolted interface.


  • Carbice SIM matches TVAC result of Structured Space Pad within ±10%.
  • Structured Space Pad provides optimal solution customized for your large area interface, minimizing hotspot.

Proven and trusted pain-free experience for space

No more painting, week-long curing, and painful scraping with liquid TIMs. No more compression set, bolt torque loss, and potted insert pullouts with conventional dry pads.

Carbice Space Pad is a clean, pain-free dry TIM trusted by primes in the space industry:

  • TRL9 qualified
  • Peel-n-stick to apply and rework
  • Designed to outlast your mission
  • Orbiting earth in satellites
  • Delivered from AS9100D certified manufacturing

Additional benefits reported by customers:

  • Same pad can be used both for ground testing and in flight
  • Reduced spacecraft weight, saved space and saved total cost of ownership
  • End-of-life performance even exceeds beginning-of-life performance
  • Efficient and cost-effective to test new designs over accurate digital iterations


[1] Rafael Lopes Costa, Valeri Vlassov. "Spacecraft Electronic Boxes Thermal Contact Resistance Experimental Study." Spacecraft Thermal Control Workshop, El Segundo, California, March 28-30, 2017

Case Study
Traveling-Wave Tube Amplifier (TWTA)

Space Pad keeps Traveling-Wave Tube Amplifier cool

Challenge of heat management of high power components on spacecraft

TWTAs are exposed to extreme temperatures that influence the strength and stability of their magnetic field and can adversely affect their RF signal output. However:

  • Conventional TIMs are a pain to apply and difficult to rework
  • Large disagreement between simulated results using conventional TIMs and tested results from thermal vacuum chamber test (TVAC)
  • The thermal interface of conventional TIMs degrades over time, compromising performance

Meet Carbice Space Pad

Space Pad is the standard for space applications:

  • TRL9 qualified TIM, orbiting earth now in satellites since 2018
  • Reliable performance accurately predicted by our simulation tool Carbice SIM
  • Easy to apply and painless to rework compared to grease and LSR
  • Same pad can be used both for ground testing and in flight
Carbice Space Pad applied on the TWTA interface and reopened (left), versus LSR applied on the TWTA interface and reopened (right)


Customized Carbice Space Pad SP125x-1S for this TWTA application:

  • Low-outgassing solid pad
  • One-sided tack


  • Performance in ASTM D5470 reference bar: 17,000 W/m²-K
  • Performance in application: 11,000 W/m²-K
  • Maintained stable performance before and after thermal cycling
  • Manufacturing advantage validated by engineers and technician


Values for customers
Space Pad

Major primes in space industry have chosen Space Pad over other TIMs for their spacecraft to:

  • Get design-phase support with accurate simulations using Carbice SIM 
  • Get industry leading thermal conductance
  • Establish confidence in thermal performance stability throughout mission
  • Reduce payload weight, save space and save cost
  • Take advantage of painless user experience validated by engineers and technicians


Carbice is a must-go for all our thermal interfaces.
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