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Thick film resistors became popular during the 1970s, and most SMD (surface mount device) resistors today are of this type. The resistive element of thick films is 1000 times thicker than thin films, [ 7 ] but the principal difference is how the film is applied to the cylinder (axial resistors) or the surface (SMD resistors).
The same effect is obtained whether the laser changes a thick-film or a thin-film resistor on a ceramic substrate or a surface-mount resistor. The surface-mount resistor is produced with the same technology and may be laser trimmed as well. Trimmable chip capacitors are built up as multilayer plate capacitors.
Within the flat panel display industry TFD more often refers to thin film bi-directional diodes, also known as metal-insulator-metal (MIM) TFDs or nonlinear resistors. [1] Bi-directional MIM TFDs have very low current flow at low applied voltages , but then begin to conduct electricity above a threshold voltage, of either positive or negative ...
Additionally resistors and large tolerance capacitors can be manufactured with thick film methods. Thick film wiring can be made compatible with surface-mount technology (SMT), and if needed (due to tolerances and/or size requirements) surface-mountable parts (resistors, capacitors, ICs, etc.) can be assembled on a thick film substrate.
Surface-mount zero-ohm resistors are usually marked with a single or multiple "0" (if size allows marking), where the number of digits can indicate the tolerance or maximum resistance rating, as is the case with regular resistors. [3] They are often implemented as thick film resistors.
NTC thermistor elements come in many styles [4] such as axial-leaded glass-encapsulated (DO-35, DO-34 and DO-41 diodes), glass-coated chips, epoxy-coated with bare or insulated lead wire and surface-mount, as well as thin film versions. The typical operating temperature range of a thermistor is −55 °C to +150 °C, though some glass-body ...
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