Manufacturing context
JCL PCB lists 4-layer Bluetooth-module PCB in its official manufacturing documentation. Layer count: 4 layers. Surface finish: Immersion gold. Solder mask: Green. Catalogue application: Bluetooth module. Four-layer catalogue example. Trace geometry, finished holes, laminate grade and RF performance require review of the submitted design. Which stack-up, laminate grade, finished copper and acceptance criteria will be used for this board?
Official company source reviewed- Manufacturing focus
- PCB prototypes and small batches · Multilayer and castellated boards · Heavy-copper constructions
- Published footprint
- Guangdong
- Listing and account
- Independently researched · factory account not claimed
4-layer Bluetooth-module PCB
Manufacturer reportedFour-layer catalogue example. Trace geometry, finished holes, laminate grade and RF performance require review of the submitted design.
- Layer count
- 4 layers
- Line / space
- Not disclosed for this profile
- Finished hole
- Not confirmed
- Impedance
- Not disclosed for this profile
| Layer count | 4 layers |
|---|---|
| Surface finish | Immersion gold |
| Solder mask | Green |
| Catalogue application | Bluetooth module |
| Technical source | jcl-pcb.com · Manufacturer specification |
These are separate published limits, not a promise that every combination is manufacturable. Unknown values are excluded from numerical filtering.
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The website review establishes the source of a statement. Independent UL ownership, equipment and material checks are tracked separately.
UL ownership
Not independently verifiedNo supporting record has been reviewed for this category.
Qualification request: Legal holder, manufacturing address and current UL recognition.
Equipment & in-house processing
Not independently verifiedNo supporting record has been reviewed for this category.
Qualification request: Machine inventory, location and evidence that the relevant process runs at the quoted site.
Material traceability
Not independently verifiedNo supporting record has been reviewed for this category.
Qualification request: Laminate grade, supplier documentation and traceable production-batch records.
Sources & review record.
Reviewed 2026-09-21. Manufacturer pages can change; confirm the current revision when requesting a quotation.
- JCL PCB — product and technical documentationhttps://jcl-pcb.com/Source checked 2026-09-21Official website
- JCL PCB — company informationhttps://jcl-pcb.com/aboutUs.htmlSource checked 2026-09-21Official website
Company names and images identify the source manufacturer. Listing does not imply endorsement, partnership, account participation or completion of a factory audit.
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Which stack-up, laminate grade, finished copper and acceptance criteria will be used for this board?
Attach the manufacturing brief
Layer stack-up, finished dimensions, copper weights, laminate grade, quantity and delivery destination.
Define acceptance
Finished-hole tolerance, impedance targets, coupon requirements, surface finish and permitted process substitutions.
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