How to read an MCH datasheet, line by line
Twelve fields on an MCH heater datasheet, read line by line. Check your supplier's sheet against the twelve.
Read the noteHome/Guides
Technical library
Technical library
Nine engineering guides on MCH heater design: calculations, failure modes, co-firing process.
What the 1,650 °C hydrogen co-fire is actually doing
Why MCH heaters are 96% alumina and tungsten, co-fired at 1,650 °C in hydrogen. Read the one process step.
Read the noteWhy ceramic heaters crack
Most ceramic heater cracks are not a material defect. Read the fracture and find the critical temperature step.
Read the noteWatt density: the number that decides the heater
How to calculate watt density for an MCH heater, and why 45 W/cm² is treated as the ceiling. Read the calculation.
Read the noteCold resistance, hot resistance, and the inrush nobody plans for
A 100 W tungsten heater can draw 3–4× its rated current at switch-on. Size the fuse and relay for the surge.
Read the noteMCH vs PTC: how to choose
MCH vs PTC ceramic heaters: 800 °C ceiling, 45 W/cm², no power drift. Read the engineering comparison.
Read the noteHow to specify an MCH heater
Nine parameters to fix before you request an MCH heater quote — voltage, power, cold resistance. Read the checklist.
Read the noteCustom ceramic heater OEM, step by step
How an MCH heater OEM project runs, from brief to mass production, in six stages. Read the factory guide.
Read the noteQuestion not answered here?
Send the application, the duty cycle and the space envelope. An engineer replies with a circuit proposal for your part.
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