What this manufacturer makes
Hehong Electronics provides PCB fabrication and assembly, with a Shanghai business presence and a production base in Dongtai, Jiangsu. Its official website describes automotive, industrial-control, medical, energy and communications applications. The catalogue includes castellated multilayer boards for modules, immersion-gold boards and power-conversion boards. This listing uses the automotive DC–DC board example. Its 48 V application label is not an independently tested voltage or insulation rating. Copper distribution, current paths and isolation requirements must be agreed for the submitted design.
Official company source reviewed- Manufacturing focus
- Multilayer PCB fabrication · Castellated module boards · PCB assembly
- Published footprint
- Shanghai
- Listing and account
- Independently researched · factory account not claimed
Multilayer PCB for 48 V DC–DC applications
Manufacturer reportedSpecific catalogue application. The 48 V system description does not establish the board’s isolation rating, power handling or approved creepage distances.
- Layer count
- Layer range not disclosed
- Line / space
- Not disclosed for this profile
- Finished hole
- Not confirmed
- Impedance
- Not disclosed for this profile
| Construction | Multilayer PCB |
|---|---|
| Catalogue application | Automotive DC–DC conversion |
| System context | 48 V application; not a tested insulation rating |
| Technical source | h-fast.com · Manufacturer specification |
These are separate published limits, not a promise that every combination is manufacturable. Unknown values are excluded from numerical filtering.
Open capability sheet →Know what has been checked.
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.
- Hehong Electronics — product and technical documentationhttp://www.h-fast.comSource 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.
Make the first technical conversation useful.
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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