FEATURES
 No noise
 High efficiency
 Saves energy
 Long service life
 Corrosion resistance
 High temperature resistance
 Cold and heat shock resistance

APPLICATIONS
Widely used in daily life, industrial and agricultural
technology, communication, environmental protection,
industrial drying equipment, water, oil, acid and alkali liquid
heaters such as: hair dryer, electronic cigarette,
aromatherapy stove, air conditioner, instant water heater,
automobile exhaust oxidation sensor, ultrasonic heating
element and other rapid heating devices, multi-function
microwave oven, kettle, coffee maker, infrared
physiotherapy, intravenous fluid heater, etc.

DESCRIPTION
MCH is acronym for Metal Ceramic Heater, which is made
up of high melting point metal heating resistance slurry such
as tungsten or molybdenum-manganese printed onto 96%
alumina casting ceramic green body according to the design
requirements of the heating circuit. After being laminated by
heat pressing, ceramic heaters are then formed by co-firing
ceramic substrate and metal circuit in hydrogen reduction
atmosphere protection furnace at 1650° C.
It can also be called MCH heater, MCH ceramic heating
element, alumina metallic ceramic heating element, HTCC
ceramic heating element, ceramic heater, etc.
MCH ceramic heater features no noise during operation and
radiates infrared light that is beneficial to the human body. It is
mainly used to replace the most widely used alloy wire and
PTC heating elements and components. Compared with the
former two, this heater features corrosion resistance, high
temperature resistance, cold and heat shock resistance, long life,
high efficiency, energy saving, uniform heating, high thermal
conductivity, free of lead, cadmium, mercury, hexavalent
chromium, polybrominated biphenyl, polybrominated diphenyl
ether, etc. It is in compliance with RoHS and other
environmental requirements. Specific performances can be
found as follows:
Energy saving and high thermal efficiency. The unit heat
consumption is 20~30% less than PTC. Rapid heating without
open flame, it takes only 10 seconds to heat up to rated
100°C~230°C; and 30 seconds to 500°C~700°C. It features
uniform heating and PTC characteristics TCR: 3300ppm/°C,
power density ≥ 50W/cm2.
Safe surface without charge and good insulation. It can pass
4500V/1s withstand voltage test without breakdown. Leakage
current <0.5mA, water insulation resistance DC in 750V
voltage >200MΩ.
No impact peak current; no power attenuation; less impact on
the circuit board. Improve the service life of the circuit board
and the whole machine. The ceramic heater circuit is isolated
from the air. It is resistant to acid, alkali and other corrosive
substances, thus featuring a long service life.
Resistance-temperature change is linear. Temperature can be
easily controlled by resistance or voltage, and no temperature
control is required below 500 °C.
Raw materials and production processes:
Main raw materials: 96% alumina ceramic green body,
tungsten, molybdenum slurry, and nickel slurry.
Production process:
Printing circuit on the surface of ceramic green body——heat
pressing——high temperature sintering in hydrogen furnace at
1650°C for 21 hours——smoothing at 800°C for 8 hours——
electrode nickel plating——withstand voltage test and
insulation resistance test in water——dry burn aging and
power performance test (full inspection)——water cycle test—
—assembling flange——welding electronic wire (including
temperature fuses and terminals)——withstand voltage and
power performance test for finished products——visual
inspection