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Thick Film Resistors PCB is a new technology to incorporate reliable carbon resistors printing on the printed circuit boards using standard PCB processing. Thus far, The environmental and mechanical testing of Thick Film Resistor PCB processing has also been successful. Continuing to test and formulate higher resistivity values has proved that Thick Film Resistors PCB technology has a future in the embedded passives market. At present, this technology is quite mature that can be printed on a wide range of substrates — from high temperature ceramics to common FR4 materials, or Polyimide (PI) Flex Material. The printed resistor materials (thick film Ink) are based on a novel hydrophobic polyimide resin developed specifically to serve as a polymeric Thick Film Resistors or thin film resistor material.

Thick Film Resistors PCB also calls Printed Carbon Resistor PCB , which resistor value can be from 10 ohms/square to 100K ohms/square (Resistor value), The maximum resistor value can reach 100M ohm with tolerance +/-10%, The Thick Film Resistor is to be printed on an etched copper outter layer and cured in a standard convection oven, infra-red furnace, or a thermal belt furnace. Then using Laser trimming to adjust the resistance to achieve tight tolerances.
For the designs with potentiometer functions, the surface of the thick film resistor usually has a sliding wiper, Panda PCB also can control the linear tolerance of the resistance within +/-1% to get a balanced voltage changing.
This Thick Film Resistor PCB solution makes resistors embedded into printed circuit boards more complex, But more versatile than the selection of surface mounted passive components. This frees up the surface space for the placement of more active components that increase functionality.

Thick Film Resistor PCB improved the process of embedded resistors by eliminating the needs for special termination treatment, such as immersion silver,or silver palladium, gold palladium, Also speed up the laser trimming process with tighter TCR’s; and increase the reliability performance with a stable binder system. On the other hand, Thick Film Resistor PCB values currently available for testing show good adhesion to a clean copper surface. This eliminates the need for silver immersion, or silver palladium, gold palladium which presents a cost savings as well as reduces concerns of silver migration.

In a word, Thick Film Resistor PCB Technology can be used to deposit any combination of fixed resistors, switches, sensors, potentiometer tracks and conductors onto virtually any size, shape or PCB form. Thick Film Resistor PCB Technology is ideal for three-wire voltage-divider (potentiometer) designs. Here, Panda PCB offers in-process calibration and resistive (ohmic) process control, allowing for tight matching within lots and high precision voltage ratios between key points in the circuit. Once screened and cured, these resistive tracks can be individually laser trimmed to obtain very accurate tolerances in high volume.

By the way, We also provided custom Multi-Wire Wipers (contacts) for customer if needs, we can manufacture the wipers according to customer's drawing design requirements or specification. More information about wipers , Please refer to Multi-Wire Wipers.

Thick Film Resistor PCB Capability :

Substrate Material : FR4, Ceramic, 96%AL2O3, Polyimide, SUS304.
Conductor material: Copper(Cu）, Ag/Pd (Silver palladium).
Thick Film thickness (height): 10 – 20 um.
Minimum Film Track Width: 0.2 mm +/-0.05 mm.
Minimum Film Track Spacing (clearance): 0.5 mm.
Minimum Pad-Carbon Overlap: 0.2 mm (importance).
Resistance range can be from 100M ,100K ohms/square，10K ohm/square,1K ohm/square,(10 ohms/square Minimum.).
Resistance Tolerance: +/-10%(Standard), +/-1% with Laser trimming.
Resistance Linear tolerance: +/- 1%
Carbon Ink Durability (Wiper): 1 million cycles Min. even 3 milion Min.
Temperature rating: -40℃/+125℃

Main Advantages:
Excellent high frequency performance Calibrated voltage dividers available Special ohmic values available Functional (in-circuit) trimming Low profile Long life No insertion costs No insertion errors No soldering problems Unlimited fixed and variable resistor combinations Laser trimming capabilities
Typical Applications:	HOME APPLIANCES: Thick Film Resistor PCB for Satellite Signal transmission equipment Thick Film Resistor PCB for Light dimmers Thick Film Resistor PCB for High frequency wireless communication Thick Film Resistor PCB for Speed control for hand power tools Thick Film Resistor PCB for Commercial Phased Array Networks Thick Film Resistor PCB for Power conversion devices Thick Film Resistor PCB for Electric regulator Thick Film Resistor PCB for Voltage stabilize
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Thick Film Resistor PCB

What is Thick Film Resistor PCB ?