Dimensional CrystalHeat

DIMENSIONAL & PERFORMANCE
CHARACTERISTICS OF TPI's
CrystalHeat Transparent Resistive
LCD Heater

Light Transmission:

80 - 85 %* Average VLT**

Environmental Characteristics:

	Operating	Storage
Temperature:	-40 - 100 ºC	-40 - 100 ºC
Humidity:	5 - 95%	5 - 95%
(Contact factory for environmental requirements outside the standard range)

Electrical Characteristics:

Input Voltage: 2 - 24 Volts DC or AC
Wattage: 0.1 to 1.0 Watt/in. sq. is recommended
Heater Resistance: Heater resistance is a function of desired heater wattage, available input voltage and heater geometry.

R=E²/w

Where:	E = Input Voltage
	W = Desired Wattage
For a rectangular shape of length "L" and width "W" the heater resistance is:

R = (SR)(W)/L

Where:	SR = Sheet Resistivity; defined in ohms per square,
	resistance of a square piece of
	conductive film regardless of its size.

Available Sheet Resistivities: 10, 30, 60, 80, 200 & 300 ohms/square ± 20%

(Contact Factory for Other Available Resistivities)

Dimensional Tolerances & Limits:

Tolerances Overall Size:	± .030 in ±.100 in. if 12 in. or longer
Lead Wire Length:	± .125 in.
Thickness: ± .005 in. Typical (Varies With Choice of Different Options)
Printing:	± .010 in.
Size Limits
Maximum Size:	16 in. x 20 in.
Minimum Busbar Width: .100 in. (It is desirable to have as wide a busbar as possible to avoid excessive voltage drop in the busbars)

Sensors & Connectors:
Heaters can be supplied with a miniature temperature sensor.

Lead wires can be terminated to a connector.

All heaters are supplied with protective liners covering both sides.

* Per ASTM STD D 1003
** Visual Light Transmission

Transparent Products, Inc.
28064 Avenue Stanford Valencia, CA 91355
Tel 661.294.9787 - Fax 661.294.9785