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Kühlkörper-Wärmerechner — Kostenloses Online-Tool

Sperrschichttemperatur aus Wärmewiderstand R_θ

Sperrschichttemperatur aus Verlustleistung, Wärmewiderstand (Junction-Case, Case-Sink, Sink-Ambient), Umgebungstemperatur. Elektronikdesign-Tool. Kostenlos.

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Heat Sink Thermal Rechner

Junction temperature from power × thermal resistance + ambient. Check T_J vs T_Jmax with safety margin. Required heatsink R_θSA for given specs.

How to use this tool

  1. 1

    Power dissipation

    Component power in watts.

  2. 2

    Thermal resistances

    Junction-to-case, case-to-sink, sink-to-ambient.

  3. 3

    Junction temperature

    Compare to T_jmax.

Frequently Asked Questions

Why R_θJC + R_θCS + R_θSA?
Heat flows in series: junction → case → heatsink → ambient. Each interface has thermal resistance. Total R_θJA = sum. T_J = T_A + (P × R_θJA).
How to choose heatsink R_θSA?
Required R_θSA = (T_Jmax - T_A)/P - R_θJC - R_θCS. Below required = OK. Smaller R_θSA = larger/finned heatsink. Add safety margin (T_Jmax - 25°C).
Thermal interface material?
Thermal grease ~0.5°C/W contribution. Thermal pad ~1-2°C/W. Nein interface = 5-10°C/W (terrible). For high-power: phase-change pad or grease + good clamping.

Wichtigste Punkte

  • Heat Sink Thermal Rechner is a free, browser-based calculator tool — junction temp from thermal resistance r_θ.
  • Nein signup, no downloads, no file uploads — your data stays on your device.
  • Works on desktop, tablet, and mobile. Install as a PWA for offline access.

How to Use Heat Sink Thermal Rechner

  1. Open the tool: Launch Heat Sink Thermal Rechner on Toololis — no account or download needed.
  2. Enter your data: Paste text, enter values, or select a file directly in your browser.
  3. Get instant results: Everything is processed locally — results appear immediately.
  4. Copy or download: Save your output or share it. Bookmark for quick access next time.

Heat Sink Thermal Rechner — Quick Facts

Preis
Kostenlos — keine Limits, kein Wasserzeichen, keine Paywall
Privatsphäre
100% browser-basiert — keine Daten verlassen dein Gerät
Plattform
Jeder moderne Browser — Desktop, Tablet, Mobil
Kategorie
Rechner Tools on Toololis
Offline
Works offline after first visit (Progressive Web App)
MerkmalDetails
ToolHeat Sink Thermal Rechner
KategorieRechner
Anmeldung nötigNein
Datei-UploadKeine — wird im Browser verarbeitet
Mobile-UnterstützungVoll responsive
KostenFür immer kostenlos

Why Use Heat Sink Thermal Rechner?

You should try Heat Sink Thermal Rechner for a quick, private way to junction temp from thermal resistance r_θ. All processing happens in your browser. Your files and data never leave your device. According to web.dev, client-side processing is the gold standard for privacy.

On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.

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100% Privatsphäre. Dieses Tool läuft komplett in deinem Browser. Deine Daten werden niemals auf einen Server hochgeladen.