DOWSIL TC-5351

Harmonization Code : 3506.10.00.00 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg

DOWSIL TC-5351

Main features

  • 3.3 W/(m K) Thermal Interface
  • Screen-Printable Thermal Interface
  • Vertical Gap-Fill Capability Up to 1.0 mm

Product Description

DOWSIL™ TC-5351 Thermally Conductive Compound is a one-part, gray, non-curing thermal interface compound formulated to dissipate heat in electronics applications. It provides a typical thermal conductivity of 3.3 W/m·K and can fill vertical gaps up to 1.0 mm while remaining stable on vertical surfaces. The material is screen printable, requires no mixing or cure step, and can be stored at room temperature. These characteristics support controlled application between heat-generating components and associated housings, heat spreaders, or heat sinks in lighting, automotive electronics, power conversion, and other electronic thermal-management assemblies.

Key features

  • Thermal conductivity: Typical value of 3.3 W/m·K for transferring heat across an electronic interface.
  • Non-curing, one-part compound: Supplied ready to use without component mixing or a chemical cure cycle.
  • Vertical gap filling: Demonstrates vertical gap-fill capability up to 1.0 mm.
  • Screen printable: Supports controlled material placement in suitable electronics manufacturing processes.
  • Room-temperature storage: Does not require refrigerated storage under the conditions established by Dow product information.

Applications / Suitable for

  • Thermal interfaces in lighting and electronic assemblies
  • Automotive electronic modules and power electronics
  • Power conversion and EV charging equipment

Related application information

Product Family

DOWSIL TC-5351

Catalog Product

Unlike other products we offer, the products listed on this page cannot currently be ordered directly from the website.

TDS, SDS & Technical Documents

Technical Specifications

General Properties
ColorColor
Gray
Specific GravitySpecific Gravity
3.1
Thermal Properties
Thermal ConductivityThermal Conductivity
3.3 W/m.K
Electrical Properties
Dielectric StrengthDielectric Strength
6.3 kV/mm
Volume ResistivityVolume Resistivity
3.1E+13 Ohms⋅cm

Additional Information

Thermal interface material

DOWSIL™ TC-5351 Thermally Conductive Compound

A one-part, gray, non-curing thermal compound with a typical thermal conductivity of 3.3 W/m·K. It is formulated for heat dissipation in electronic interfaces and combines screen-printable application with stability on vertical surfaces and gap-fill capability up to 1.0 mm.

One-part compound Non-curing 3.3 W/m·K typical Screen printable Up to 1.0 mm vertical gap fill
DOWSIL TC-5351 Thermally Conductive Compound in its approved product packaging

DOWSIL™ TC-5351 is supplied as a gray, one-part thermally conductive compound.

As supplied

Product form and key characteristics

Material form
Compound / gap filler
A dispensable thermal interface material intended to occupy the interface between thermal-management surfaces.
Component
One part
No component proportioning or mixing step is required before application.
Cure behavior
Non-curing
The material does not require a chemical cure cycle after placement.
Appearance
Gray
Provides a consistent visual appearance for straightforward identification during application
Technical data

Typical product properties

The values below are typical product data and should not be interpreted as guaranteed specifications. Thermal conductivity is a bulk material property and does not independently define complete installed-interface or system performance.

Property Typical value Unit
Thermal conductivity 3.3 W/m·K
Specific gravity 3.1
Vertical gap-fill capability Up to 1.0 mm
Component count 1 part
Application and processing

Applying the thermal compound

DOWSIL™ TC-5351 is a one-part, non-curing material that can be screen printed or otherwise applied using equipment appropriate for its compound form. The applied quantity and resulting interface thickness should be controlled for the intended assembly rather than selected from thermal conductivity alone.

Preparation: Use the material as a one-part compound; no component mixing or cure preparation is required.
Application method: The product is screen printable. Select suitable application equipment and process controls for the required placement geometry.
Interface control: Apply a controlled quantity to the intended interface. Vertical gap-fill capability is documented up to 1.0 mm, but final thickness and assembly pressure should be evaluated for the specific design.
Final assembly: Assemble the mating surfaces so the compound occupies the intended thermal interface. No post-application chemical cure cycle is required.
Non-curing thermally conductive compound being dispensed onto a processor mounted on a circuit board

A non-curing thermally conductive compound applied to a processor helps fill surface irregularities and improve heat transfer between the component and heat sink

Storage and handling

Store DOWSIL™ TC-5351 in its original packaging with the container tightly closed to prevent contamination. Follow any additional storage instructions specified on the product label and use the product within the indicated shelf life.

Applications

Electronic thermal-management applications

The product is formulated to dissipate heat in lighting, automotive, and power-electronics applications. Final interface thickness, assembly design, operating environment, and required thermal performance should be evaluated in the intended system.

LED lighting assembly with a thermal interface between the light source and metal heat sink
Lighting electronics
Suitable for evaluation as a dispensable interface between heat-generating lighting electronics and an associated housing or heat sink where controlled heat transfer and non-curing installation are required.
Automotive electronic control module with thermal interface material coupling electronics to the enclosure
Automotive electronics
May be considered for automotive electronic interfaces in which a screen-printable compound, vertical surface stability, vibration damping, stress relief, and heat dissipation are relevant evaluation factors.
Power conversion or EV charging power-electronics assembly with heat-generating components connected to a thermal-management surface
Power conversion and EV charging
Suitable for evaluation in power-electronics assemblies, including power conversion and EV charging equipment, where thermal interfaces are used to couple heat-generating components to housings, spreaders, or heat sinks.

Explore power conversion systems →
Explore EV charging applications →
Product resources

Thermal-management application resources

Silicone solutions for advanced driver-assistance systems
A Dow category brochure covering silicone material roles and selection considerations for electronic assemblies used in advanced driver-assistance systems.
 View Silicone Solutions for ADAS full screen →
Silicone materials for EV charging infrastructure
A Dow selection guide introducing silicone material options and application areas associated with EV charging equipment and its electronic systems.
 View Dow Silicones for EV Chargers full screen →
Video resource

How to use thermally conductive materials

This Dow materials-training video provides an overview of handling, dispensing, curing, packaging, and storage considerations for thermally conductive materials. Use it as general application training alongside the product-specific Technical Data Sheet for DOWSIL™ TC-5351.
Next steps

Evaluate DOWSIL™ TC-5351 for your thermal interface

Contact Krayden to discuss interface geometry, target application thickness, dispensing or screen-printing requirements, vertical placement, sample needs, and the role of DOWSIL™ TC-5351 in lighting, automotive, power-conversion, or EV charging electronics.

Discuss your thermal interface requirements

Krayden can support evaluation of DOWSIL™ TC-5351 for thermal management applications and help identify suitable material solutions for your electronic assembly requirements.

Contact Krayden

Leading Brands Trust in Our Products and Services

  • Jabil
  • Linxens
  • Magna
  • Medtronic
  • NXP
  • Philips
  • Semikron
  • Teledyne
  • Thales
  • Vishay
  • ZF
  • AMS
  • Apple
  • Audi
  • Broadcom
  • Borgwarner
  • Bosch
  • Eaton
  • Henkel
  • Honeywell
  • Hysol
  • Intel
Products that Perform|Knowledge that Serves|Service that Delivers