Flexible printed functional circuit

Custom Polymer Thick Film Circuit

Custom polymer thick film circuits combine a flexible film substrate with printed conductor, resistor, or contact functions in a drawing-led format. Chipsimple reviews the material, printed stack, termination, bend condition, electrical target, assembly interface, and validation method together before prototyping or repeat production.

  • Film and printed stack reviewed together
  • Custom geometry, pads, and contact zones
  • Bend and assembly conditions defined early
  • Electrical acceptance tied to the drawing
Polymer film
Selected by drawing
By stack review
Printed layer build
5
Verified product views
By drawing
Final electrical release
Product Categories

Verified capability review

Quick Specifications

Custom Polymer Thick Film Circuit is shown against approved company capability control sheets.

Capability source: approved company category control sheets. Final values remain drawing- and sample-controlled.

ParameterStandard capabilityEngineering review rangeFinal release
Substrate MaterialPI / PET / PEN / PolycarbonatePI, PET, PEN, or polycarbonate selected for temperature, flex, chemistry, stiffness, and cure compatibilityApproved material specification, drawing, and incoming criteria
Substrate Thickness25–250 µm typicalWithin 25–250 µm, handling, stiffness, connector, bend strain, and dimensional stability are reviewedApproved material specification, drawing, and incoming criteria
Conductor SystemAg / Ag-C / CarbonAg, Ag-C, or carbon selected for current, resistance, flex, contact, and terminationApproved material stack, assembly interface, and sample
Resistor SystemCarbon / Ag-C / PTCCarbon, Ag-C, or PTC route by resistance function, temperature response, flex, and cureReleased drawing and approved sample
Printed Film Thickness8–12 µm typicalWithin 8–12 µm typical, ink rheology, screen, cure, adhesion, and resistance are controlled togetherReleased drawing, DFM approval, and first-article inspection
Cure Temperature120–150°C typicalWithin 120–150°C typical, peak, dwell, support, and substrate shrinkage are validatedApproved material-process route and production traveler
View 6 additional engineering review checks
ParameterStandard capabilityEngineering review rangeFinal release
Minimum Line/Space≥150 µm typicalAt ≥150 µm, registration, spreading, flex zone, conductor load, and inspection access are reviewedReleased drawing, DFM approval, and first-article inspection
Printed Layers1–4 layers typicalWithin 1–4 layers, alignment, interlayer compatibility, cure sequence, and neutral-axis strain are reviewedReleased drawing, DFM approval, and first-article inspection
Minimum Bend Radius≥5 × substrate thickness, staticThe ≥5× thickness value is for static use; dynamic flex needs direction, cycles, speed, and strain-relief reviewAgreed lifecycle profile, acceptance drift, and validation report
Operating Temperature-40 to +90°C typicalThe -40 to +90°C typical range is checked with humidity, fluids, enclosure, load, and bend stateApproved electrical-thermal design and instrumented prototype validation
Resistance Tolerance±5% / ±10% typical±5% or ±10% selected by function, geometry, ink, cure, flex state, and measurement methodReleased electrical limits, measurement method, and approved sample
TerminationPad / Crimp / Connector / Conductive adhesivePad, crimp, connector, or conductive adhesive selected with mating parts, stiffener, contact load, and assembly processApproved material stack, assembly interface, and sample

Engineering Capabilities

A manufacturable custom circuit depends on the complete interface, not only the printed artwork. Engineering review connects film selection, conductor and resistor compatibility, print registration, cure sequence, contact protection, bend direction, connector or adhesive termination, and the measurement method used for release.

Film and printed stack

Select the substrate and printed conductor, resistor, dielectric, or protective layers as a compatible system. Thickness, cure sequence, adhesion, and exposed contact windows are confirmed before the artwork is frozen.

Artwork and registration

Release line geometry, overlaps, pad arrays, keep-outs, alignment features, bend zones, and any multi-layer registration requirement in controlled artwork with a clear revision.

Termination and assembly

Define pad, crimp, connector, conductive-adhesive, stiffener, metal-backer, pressure-contact, and housing conditions so the flexible part is reviewed in its real assembly.

Electrical and mechanical validation

Resistance, continuity, contact behavior, adhesion, bend exposure, dimensional fit, environment, and lifecycle checks are selected from the actual duty rather than inferred from a photograph.

Typical Applications

Custom film circuits fit compact products when printed electrical functions must follow an unusual outline or constrained assembly. Each application still needs its own contact, environment, movement, and validation definition.

View all applications

Application images are engineering illustrations, not customer projects, production records, or evidence of a released design. Suitability is confirmed only after the drawing, interfaces, operating conditions, risks, and validation plan are reviewed.

Verified Product Views

The gallery and detail image show real supplied flexible circuits with varied outlines, printed paths, terminal pads, holes, and attached metal-backed areas. Surface photographs establish visible construction only; they do not establish material grade, hidden layer count, resistance, bend life, adhesion, or environmental performance.

Controlled detail crop of a verified custom polymer thick film circuit showing flexible routing and terminal pads
Printed path and terminal detail
Visible construction
Flexible film bodies, printed paths, pad arrays, holes, and several assembly interfaces are visible.
Material boundary
The exact film grade, printed ink system, adhesive, and metal backing are confirmed by drawing and approved material data.
View 2 additional evidence boundaries
Electrical boundary
Resistance, continuity, current duty, and contact limits require released targets and measurement conditions.
Mechanical boundary
Static bend radius, dynamic flex duty, stiffener use, and lifecycle validation remain project-specific.

Manufacturing & Quality

Chipsimple supports controlled printing, laboratory inspection, production management, and protected packing in Dongguan.

Read the shared manufacturing-control scope

For each polymer circuit, the approved film, printed material set, artwork revision, cure route, termination, inspection method, sampling, and acceptance records are confirmed before repeat production; project capability remains subject to engineering review.

View Full Capabilities
Chipsimple screen-printing workshop with controlled printing stations
Controlled Printing
Chipsimple laboratory for dimensional and electrical inspection
Laboratory Inspection
Chipsimple production site in Yonglida Tiansheng High-tech Industry Park
Dongguan Production Site
Company inspection laboratory used for project-specific dimensional and electrical checks
Inspection Laboratory

Technical FAQ

Short answers for quotation planning; released drawings and validation requirements remain controlling.

What should be defined first for a custom Custom Polymer Thick Film Circuit?

Start with the film material and thickness, circuit outline, printed layer artwork, conductor and resistor function, contact windows, bend direction and radius, termination, stiffener or backing, assembly method, electrical targets, environment, and validation plan. These inputs determine whether the proposed material stack and process route are suitable.

Are the quick specification values guaranteed for every design?

No. They are practical category-level selection values, not a released product specification. Material compatibility, geometry, print build, electrical loading, assembly, environment, inspection method, and expected volume can narrow the usable window. Final values are confirmed against the controlled drawing and approved project conditions.

How should Custom Polymer Thick Film Circuit performance be validated?

Validate the released dimensions and fit first, then continuity, resistance or functional response, contact interface, adhesion, and any project-selected bend, humidity, temperature, chemical, or lifecycle exposure. The test method, sample size, conditioning, electrical loading, and acceptance limits must be defined before results are treated as a product rating.

What should be included with an RFQ?

Send the controlled drawing or artwork, dimensions and tolerances, material preference, electrical targets, assembly interface, operating environment, validation requirements, prototype quantity, annual volume, and schedule. Include the bend zone, connector or adhesive interface, contact exposure, backing or stiffener details, and any dynamic-flex duty.

Request a Custom Polymer Thick Film Circuit Quote

Send the controlled artwork and real assembly conditions so the film, printed stack, termination, bend zones, electrical targets, and validation route can be reviewed together. Clear revision control and measurable acceptance limits reduce avoidable prototype loops and make repeat-production planning more reliable.

RFQ inputs and review sequence
  • Drawing-led DFM and material-route feedback
  • Prototype and repeat-production route review
  • Confidential handling of customer files
  • Project-specific inspection and validation planning
  • Gerber, DXF, DWG, PDF, or dimensioned sample drawing
  • Film material, thickness, outline, holes, and tolerances
  • Printed layer artwork, overlaps, windows, and keep-outs
  • Resistance, continuity, current, voltage, and measurement method
  • Bend direction, radius, flex duty, backing, and stiffener
  • Termination, connector, adhesive, housing, and assembly pressure
  • Environment, validation, quantity, schedule, and packing
  1. 1We review the drawing, application, material route, and missing acceptance inputs.
  2. 2You receive DFM questions and a prototype route for approval.
  3. 3Repeat production follows the released revision, inspection plan, and packing requirement.

Submit RFQ and upload files

PDF, DWG, DXF, STEP, Gerber, ZIP, Excel, Word, or sample photos are accepted.

The drawing-upload form loads as you reach this section.