The Problem We Solve

Your challenge

SoC hotspots and sealed enclosures push junction temperatures past derating limits — airflow is not an option in a wearable or a sealed automotive module.

↓ Our solution
ROTADIE solution

Gap-filling thermal pads and heat-spreading graphite die-cuts matched to your gap stack-up, with conductivity, hardness and compression data for your thermal simulation.

Not sure which grade fits? Send us your application — our engineer replies with a selection proposal within 24 hours.

Thermal Interface Pads & Graphite Films

Thermal Interface Pads & Graphite Films

Die-cut thermal interface materials — silicone-free and silicone thermal gap pads, natural and synthetic graphite sheets, phase-change films — filling heat paths in compact electronics.

Key Features

A thermal pad is a tolerance-solver: its hardness and thickness have to hit your gap stack-up exactly, or the contact pressure is wrong everywhere. ROTADIE die-cuts pads and graphite with placement features built in — and we provide the conductivity/hardness data your thermal engineer actually needs.

Thermal Interface Pads & Graphite Films

  • Thermal gap pads 1 – 13 W/m·K, thickness 0.5 – 5 mm, Silicone-free grades for optical and connector-adjacent use, Natural / synthetic graphite sheets 100 – 1950 W/m·K in-plane, Phase-change film options for CPU-class hotspots, Die-cut with alignment notches and carrier film for placement, Thermal impedance & hardness data supplied per lot

Typical Applications

  • Smartphone SoC & 5G module heat spreading, TWS earphone charging case thermal paths, Automotive ECU and radar module cooling, LED lighting heat management, Router / server chipset interfaces, Battery pack thermal management

Technical Specifications

Material typesGap pads, graphite film, phase-change film
Thermal conductivity1 – 13 W/m·K (pads), 100–1950 W/m·K (graphite in-plane)
Thickness range0.017 – 5.0 mm
HardnessShore 00 20 – 85 (per grade)
Temperature range-40°C to +150°C (per grade)
Silicone optionsSilicone & silicone-free
Cutting tolerance±0.15 mm
MOQ1 prototype run

Specification values are typical reference values. Final values are subject to the grade datasheet and test report.

How to Order

① Define the application — describe the device, the function of the part and the environment it works in.

② Send the drawing — DXF / PDF / STEP, or a dimensioned sketch with tolerances marked.

③ Confirm quantities — prototype quantity and estimated annual volume.

④ Review the proposal — we reply with material options, unit price and tooling cost within 24 hours.

⑤ Sample & validate — typical parts sampled in 3–5 working days (quoted per drawing), then mass production after your approval.

Documents

DataSheet

Full specifications & ordering info

Request document →

RoHS Compliance Report

Environmental compliance report

Request document →

FTIR Material Report

Material & performance test report

Request document →

FAQ

1. What information do you need to quote my die-cut part?
Three things: (1) a drawing — DXF, PDF or STEP, even a dimensioned sketch works; (2) the material requirement, or simply the application and environment so we can propose; (3) estimated annual quantity. Every drawing is reviewed by an engineer before quoting, and we return a material proposal, unit price and tooling cost within 24 hours.
2. How fast can I get samples?
Sampling lead time depends on part complexity and is quoted together with your quotation. Typical parts are sampled in 3–5 working days after drawing confirmation; parts requiring special material sourcing or multi-layer lamination take longer. The lead time for your specific part is confirmed before you commit — no vague promises.
3. What is your minimum order quantity?
For prototype and validation runs we accept single-run quantities — you do not need to commit to mass production to test our quality. For mass production, MOQ depends on material and part size; small-quantity production runs are supported with per-unit pricing clearly shown.
4. Do I pay for tooling? Is it reusable?
Custom parts require a die tool, quoted as a one-time cost shown separately on the quotation. The tool stays reserved for your part — repeat orders have no tooling charge. For simple shapes we may use etched or laser cutting with lower or zero tooling cost.
5. How do you control quality?
Three stages: incoming material inspection (thickness, adhesive, certs), in-process inspection during die-cutting, and 100% outgoing inspection before packing. Dimension inspection reports and material certificates are supplied with shipment on request.
6. Which material brands do you convert?
We routinely convert 3M, Nitto Denko, tesa, PORON-class urethane foams, Kapton-class PI films and NOMEX-class aramid papers, plus qualified domestic equivalents when cost matters. All material declarations (RoHS / REACH) are supplied with shipment.
7. Can you ship internationally?
Yes. We ship worldwide from Shenzhen by international express (DHL/FedEx/UPS) for samples and small runs, and by air or sea freight for mass production. Export-standard packing with humidity protection is standard.
8. Can you help if I only know the application, not the exact material?
Yes — that is the normal case. Describe the device, the function the part must perform (seal, bond, shield, insulate, protect), the environment, and any constraints (thickness, temperature, approvals). Our engineer proposes 2–3 material options with trade-offs, and sampling validates the choice before you commit.

Contact Us

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Engineer reply within 48 hours — free sampling support.

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