Looking for a reliable Bergquist PCB manufacturer? This engineer’s guide covers TCLAD supply chain changes, material certification, supplier qualification checklists, IMS fabricator red flags, and useful sourcing resources.

Finding a reliable Bergquist PCB manufacturer is harder than it looks. You’re not just buying a standard FR-4 board — you’re sourcing a thermally engineered substrate where the dielectric material itself is the performance variable, and where a bad laminate choice or an unqualified fabricator can quietly kill your LED luminaire or power module before it ever reaches the field.

This guide covers what’s actually changed in the Bergquist supply chain, how to evaluate fabricators who claim to work with Thermal Clad, what certifications to ask for before you place an order, and what red flags separate genuinely experienced IMS shops from those that just know how to use the right keywords on their website.

What “Bergquist PCB” Actually Means in 2025

Before you start shortlisting suppliers, it helps to understand the ownership history — because it directly affects which manufacturer is the authoritative source for genuine Thermal Clad material.

The Bergquist Company originally developed the Thermal Clad IMS technology. In 2014, Bergquist and its Thermal Clad division were acquired by Henkel, bringing global resources and reach. Then in 2021, a new chapter began — Polytronics Technology Corp. acquired the Thermal Clad division from Henkel and the TCLAD company was formed. Today, TCLAD operates from its 100,000 sq. ft. Innovation Center in Prescott, Wisconsin, supported by a team of over 200 employees.

The long-awaited purchase of the Bergquist Thermal Clad product line from Henkel is now complete. TCLAD Inc., a Delaware corporation, finished the acquisition including all assets, business, facilities, and technology of the Thermal Clad product line. All in-house personnel including sales, technical, and direct employees remain a part of the new TCLAD Inc. team, with manufacturing headquarters remaining in Prescott, Wisconsin.

What this means practically: “Bergquist PCB” is now a colloquial term. The actual material brand is TCLAD, and the laminate manufacturer is TCLAD Inc. When a Chinese or overseas PCB fab says they build “Bergquist PCBs,” they mean they purchase TCLAD-brand laminate sheets and fabricate circuits from them — they are not the material manufacturer themselves. This distinction matters enormously when you’re qualifying your supply chain.

The Two Tiers of Supply: Laminate vs. Fabricated Circuit

One of the most common points of confusion when sourcing Thermal Clad boards is conflating the laminate supplier with the PCB fabricator. These are different entities serving different functions.

Supply Tier	What They Provide	Examples
Laminate / IMS Material Manufacturer	Raw TCLAD dielectric sheets bonded to aluminum or copper base	TCLAD Inc. (Prescott, WI)
Authorized Distributors	Laminate panels cut to size, sold to fabricators	DigiKey, authorized regional distributors
IMS PCB Fabricators	Circuit boards fabricated from TCLAD laminate	Hitech Circuits, qualified IMS fabs
Turnkey EMS Providers	Fabrication + SMT assembly + test	Various contract manufacturers

When you’re evaluating a “Bergquist PCB manufacturer,” you need to establish which tier they occupy. A fab claiming to be a Bergquist manufacturer is almost certainly a fabricator purchasing genuine TCLAD laminate and etching circuits from it — which is completely legitimate, provided they can prove material traceability back to TCLAD Inc.

Why Material Traceability Is Non-Negotiable

Here is where engineers make expensive mistakes. Generic aluminum-core MCPCBs are widely available, and on paper many of them look similar to Thermal Clad. Some low-cost suppliers substitute generic aluminum-base copper clad laminate using standard prepreg as the dielectric, which doesn’t provide the high thermal conductivity and resulting thermal performance required to assure the lowest possible operating temperatures for high-intensity LEDs.

The thermal performance difference is not subtle. TCLAD HPL-03015 achieves a thermal conductivity of 7.5 W/m·K through its proprietary polymer-ceramic dielectric. Generic aluminum PCB materials typically achieve 1.0–2.0 W/m·K at best. If your thermal model is built around genuine TCLAD material and your fab swaps in a generic equivalent without disclosing it, your LED array will run 15–25°C hotter than predicted — and your reliability predictions become meaningless.

Always request a material certificate (mill cert) with each production lot. This is a standard practice with any structural or thermally critical material and there’s no legitimate reason a reputable fab should refuse it.

Key Certifications to Verify Before Placing an Order

Certifications tell you whether a PCB fabricator has had their processes audited by a third party — and more importantly, to what standard. For Bergquist Thermal Clad boards, these are the most relevant:

ISO 9001:2015

This is the baseline quality management system certification and should be considered the minimum for any fab you work with. ISO certification ensures that the holder follows a quality management system and standard documentation, which helps to track and control process variations and maintain consistent quality. Without ISO 9001, you have no assurance that their processes are documented and controlled enough to be repeatable across production lots.

UL Certification (UL 796 / UL 94)

For PCBs, the primary standard is UL 796, the specific PCB standard, and UL 94 for flammability testing of all plastics. UL request manufacturers to strictly test their products by following correct procedures to minimize quality issues and safety problems. The products that are UL certified undergo more rigorous and stricter tests.

For LED luminaire designs that need UL Listed or UL Recognized Component marks on the final product, your PCB fabricator must have UL-recognized facility status. To prove to your end customer that PCBs have been manufactured in UL-approved facilities, you may ask your PCB supplier either to provide a certificate or print the UL logo/UL number on PCBs. UL is extremely strict these days, so it is very unlikely that a non-UL-approved PCB manufacturer will accept such a request.

IPC Class 2 vs. Class 3

IPC certifications define workmanship and inspection standards for PCB assemblies. Each class reflects a different performance objective, from basic function to continuous service in extreme conditions. For most commercial LED and power electronics applications, IPC Class 2 is the standard expectation. If you’re designing for automotive (under IATF 16949 requirements), defense, or medical applications, require IPC Class 3.

IATF 16949 (Automotive)

If your Thermal Clad board goes into an automotive LED headlamp system or EV power module, your fab needs IATF 16949 certification — not just ISO 9001. IATF 16949 adds automotive-specific requirements for process control, defect prevention, and supply chain management that standard ISO doesn’t cover.

RoHS Compliance

Verify that the fab’s surface finishes and solder materials are RoHS-compliant. For Thermal Clad boards, ENIG (Electroless Nickel Immersion Gold) is the preferred surface finish for LED applications and is inherently lead-free.

Certification Quick Reference Table

Certification	Issuing Body	Why It Matters for IMS/TCLAD Boards
ISO 9001:2015	Third-party registrar	Baseline QMS, process control, traceability
UL 796	Underwriters Laboratories	Required for UL-listed luminaires and power products
UL 94 (V-0 preferred)	Underwriters Laboratories	Flammability classification of dielectric
IPC Class 2 / Class 3	IPC (self-certified or audited)	Workmanship and inspection standard
IATF 16949	IATF	Mandatory for automotive supply chain
RoHS	EU self-declaration + fab process	Lead-free surface finishes, restricted materials
IPC-1710 MQP	IPC (self-reported template)	Standardized supplier capability documentation

How to Evaluate an IMS PCB Fabricator: A Practical Checklist

Beyond certifications, here’s what to actually dig into when qualifying a Bergquist PCB manufacturer:

Confirm Genuine TCLAD Laminate Sourcing

Ask directly: “Where do you source your Thermal Clad dielectric?” and “Can you provide a TCLAD material certificate with our order?” A qualified fab will answer this without hesitation and will have an established relationship with TCLAD Inc. or an authorized distributor. Evasive answers here are a serious red flag.

Assess IMS-Specific Process Experience

IMS fabrication is different from standard FR-4 manufacturing. Routing aluminum requires carbide or diamond-tipped tooling. Drilling requires different parameters to avoid delamination at the dielectric-aluminum interface. Solder mask application on single-layer IMS requires attention to coverage at board edges. Ask how many IMS board designs the fab processes per month and request reference customers in your industry vertical.

Review DFM Feedback Quality

Send a representative Gerber package and request a DFM review. A competent IMS shop will flag issues specific to metal core boards: insufficient copper-to-edge clearance, incorrect drill parameters for aluminum, soldermask spec issues for high-reflectance white mask, and pad design concerns for thermal performance. If their DFM review reads like a generic FR-4 checklist, that’s telling.

Evaluate Lead Time Realism for Specialty Material

TCLAD material is not FR-4 — it has longer procurement lead times, especially for less-common dielectric grades. TCLAD operates from its 100,000 sq. ft. Innovation Center in Prescott, Wisconsin, with global footprint including operating divisions in Frankfurt, Germany and Hsinchu City, Taiwan. A fab quoting you 5-day lead time on HPL-03015 boards without having raw material in stock should prompt follow-up questions about how they’re achieving that timeline.

Prototyping to Production Continuity

Confirm that the fab uses the same material grade, the same process parameters, and the same equipment for prototype and production runs. Changing fabs or processes between prototype and production on an IMS board is a common source of thermal performance variability that’s difficult to catch without exhaustive testing.

Geographic Considerations: Domestic vs. Overseas Sourcing

The choice between domestic and overseas Bergquist PCB manufacturer options involves trade-offs that go beyond unit cost.

Factor	Domestic (US/EU)	Overseas (China)
TCLAD Material Authentication	Easier to verify directly	Require mill certs; risk of substitution
Lead Time	2–4 weeks typical	3–6 weeks with shipping
Unit Cost	Higher	Lower for volume
Certifications	UL, IATF readily available	Available at qualified fabs; verify independently
Communication / DFM	Direct, responsive	Time zone and language variables
IP / Design Security	Lower risk	Higher risk for sensitive designs
Audit Access	Straightforward	Requires travel or third-party audit

For prototypes and initial design verification, domestic sourcing from an authorized TCLAD circuit fabricator gives you the clearest material traceability and the easiest access to technical support. For volume production, qualified overseas fabs using verified TCLAD laminate can offer significant cost reduction — but the qualification process upfront is more intensive.

For alternative IMS substrate materials worth evaluating alongside TCLAD, engineers sometimes compare Arlon PCB laminates, which offer their own line of thermally conductive substrate options for demanding applications.

Red Flags to Watch for When Sourcing

These are the supplier behaviors that should immediately trigger further scrutiny:

Claims to manufacture the dielectric itself. Unless you’re talking to TCLAD Inc. directly, no PCB fabricator manufactures genuine Thermal Clad dielectric. Any supplier claiming to manufacture their own equivalent should be asked to provide independent material characterization data — not just a spec sheet they wrote themselves.

No material traceability documentation. If a supplier can’t or won’t provide lot-traceable material certificates linking your boards to a TCLAD laminate lot, you have no way to verify what dielectric is actually in your boards.

Thermal resistance specs that seem too good. Generic aluminum PCBs are sometimes marketed with inflated thermal conductivity claims. If a supplier is quoting thermal conductivity significantly above 2.2 W/m·K for HT-series equivalent material, ask for the independent test data. HPL-03015’s 7.5 W/m·K is genuinely exceptional and is a function of TCLAD’s proprietary dielectric chemistry — not something a generic fab can replicate.

No IPC-6012 or IPC-A-600 inspection capability. These standards define how IMS boards are inspected. A fab without these inspection protocols in place is not equipped to catch the defect modes specific to metal core substrate fabrication.

Useful Resources for Bergquist PCB Sourcing and Qualification

Resource	Purpose	Where to Find It
TCLAD Inc. — Official Material Manufacturer	Laminate specs, authorized fab list, technical support	tclad.com
TCLAD Selection Guide (DigiKey)	Complete dielectric family comparison	DigiKey PDF
UL Product iQ Database	Verify fab’s UL certification status	iq.ul.com
IPC Standards Store	IPC-6012, IPC-A-600, IPC-1710 MQP templates	ipc.org/standards
IPC-1710 MQP	Standardized supplier qualification profile	Request directly from prospective fab
Arlon PCB Materials	Alternative IMS substrate comparison	Arlon PCB at RayPCB
WE-Online IMS Design Rules	DFM rules for metal core boards	Würth Elektronik PDF

Frequently Asked Questions

Q1: Can any PCB fabricator process Bergquist Thermal Clad material, or do I need an “authorized” manufacturer?

TCLAD Inc. sells laminate through distributors, and technically any fab that purchases it can build circuits from it. However, IMS fabrication requires tooling, process parameters, and inspection capabilities specific to aluminum-base boards. In practice, you want a fabricator who regularly processes metal core boards at volume — not one who occasionally does a run when a customer requests it. Ask for references and look for a fab that lists IMS as a core capability, not a specialty service. TCLAD Inc. can also provide guidance on their recommended circuit fabricators if you contact their technical team directly.

Q2: How do I know if my overseas supplier is using genuine TCLAD material versus a generic substitute?

The most reliable method is requiring a material certificate (mill cert) for each production lot that includes the TCLAD part number, lot number, and date of manufacture. You can cross-reference this with TCLAD Inc. if needed. As a secondary check, request thermal conductivity test data for a sample board from your production lot — a properly built HPL-03015 board should measure close to 7.5 W/m·K. A significant deviation from the datasheet value is a strong indicator of material substitution.

Q3: What’s the minimum order quantity for TCLAD laminate boards, and does it affect supplier selection?

For prototype quantities (typically 5–25 boards), most IMS-capable fabs can accommodate small runs, though setup costs are amortized over fewer boards so unit pricing is higher. For production volumes above 500 boards per run, you’ll have more supplier options and better pricing leverage. Some overseas fabs have minimum order quantities tied to full panel sizes — understand your fab’s panelization strategy since it affects material yield and ultimately unit cost.

Q4: Is IATF 16949 certification required for all automotive LED PCB applications?

Not universally — it depends on your customer’s requirements and your position in the supply chain. If you’re a Tier 1 or Tier 2 supplier shipping directly to an OEM automotive program, IATF 16949 is typically mandatory. If you’re supplying an aftermarket LED retrofit or an automotive accessory that doesn’t go through the Tier supply chain, ISO 9001 may be sufficient. Check your customer’s supplier quality requirements (SQR) documentation before assuming either way.

Q5: My design uses both standard FR-4 sections and a Thermal Clad area in the same assembly. Can one fab handle both?

For most designs, the Thermal Clad IMS board and the FR-4 control board are separate PCBs that are mechanically attached or connected via a flex or wire harness. True hybrid PCBs combining IMS and FR-4 regions in a single laminate are unusual and require specialized fabrication expertise — most standard IMS fabs don’t offer this. If your design genuinely requires a hybrid approach, verify this capability explicitly with your fabricator before committing to a design, and expect longer lead times and higher costs.

Summary

The search for a reliable Bergquist PCB manufacturer really comes down to three things: confirming you’re getting genuine TCLAD material with traceable lot documentation, verifying the fab has the certifications and process capability to handle aluminum-base IMS boards correctly, and doing enough diligence upfront to avoid the expensive discovery that your thermal model doesn’t match your production boards.

TCLAD continues to innovate from its vertically integrated U.S. manufacturing center, delivering thermal management solutions for high-power density applications worldwide — but the quality of the circuit board you receive depends equally on the fabricator who processes that laminate. Invest the time in supplier qualification before your first production run, and you’ll avoid the kind of field failures that come from cutting corners on a material that’s doing serious engineering work in your design.

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Looking for a reliable Bergquist PCB manufacturer? This engineer’s guide covers TCLAD supply chain changes, material certification, supplier qualification checklists, IMS fabricator red flags, and useful sourcing resources. (157 characters)