Vacuum and tunnel brazed liquid cooling
Brazed Cold Plates for High-Power Liquid Cooling
BY Thermal manufactures custom brazed cold plates for engineers who need sealed internal channels, compact heat transfer area, and application-specific mounting geometry. Vacuum brazing or tunnel brazing can be reviewed according to material, structure, and production requirements. Share drawings and thermal requirements for an engineering RFQ.
Drawing-based quotation
Brazed cold plates manufactured from your drawings
These examples help engineers identify the closest brazed liquid cold plate style. Send drawings and cooling requirements so BY Thermal can review material, internal channel structure, brazing route, inspection needs, and quotation details.
How it works
Brazed structures for compact internal flow paths
A brazed cold plate joins machined plates, covers, fins, or manifolds into a sealed cooling assembly. For a process-only overview, read the brazing process for liquid cold plates. Vacuum brazing or tunnel brazing may be reviewed when the design needs more channel area or flow control than a simple embedded tube cold plate layout.
Core features
What engineers evaluate in a brazed cold plate
Complex channel layouts
Internal channels and manifolds can be reviewed around high heat zones, port locations, and flow balance.
Added heat transfer area
Fin or pin structures may be considered when the final drawing and pressure drop target support them.
Sealed liquid structure
Brazed construction supports sealed coolant passages subject to material, process, and inspection review.
Application-specific mounting
Mounting holes, counterbores, device contact areas, and surface finish can be built into the cold plate design.
Material and finish review
Aluminum or copper structures, plating, cleaning, and coolant compatibility should be confirmed before release.
Prototype risk reduction
Prototype builds can validate geometry, assembly, port position, and inspection requirements before production.
Manufacturing proof
Cold plate media and process evidence
Use real BY Thermal media when publishing in WordPress. Replace any temporary image with the matching product, channel, or inspection photo before indexing.
- CNC machined channel or cover plate photo.
- Vacuum brazing, tunnel brazing, or related process photo.
- Finished brazed cold plate photo.
- Leak test, pressure test, or inspection evidence if approved.
Design inputs
Engineering details that determine the cold plate structure
The correct brazed design depends on thermal load, coolant, flow resistance, material, sealing requirements, and how the plate mounts into the final system. Engineers can compare FSW cold plates and start from the liquid cold plates overview when evaluating all custom cooling plate routes.
| Thermal load | Heat source layout, power loss, target device temperature, duty cycle, and ambient conditions. |
|---|---|
| Flow requirements | Coolant type, inlet temperature, flow rate, pressure drop limit, port size, and port direction. |
| Mechanical design | 2D or 3D drawings, contact pads, cover thickness, mounting holes, flatness needs, and space limits. |
| Quality requirements | Leak test method, pressure requirements, cleanliness, surface treatment, packaging, and traceability needs if applicable. |
Applications
Brazed cold plate application fit
IGBT and power modules
Compact cold plates can be reviewed around high-power semiconductor contact patterns.
Laser equipment
Brazed liquid cooling plates can support laser power electronics, diode arrays, and pump modules.
Data center power
Custom cold plates can be matched to busbars, converters, and compact power assemblies.
Industrial automation
Mounted drives, controls, and power supplies can use liquid cooling where air cooling is limited.
EV and charging systems
Cold plate geometry can be reviewed for converters, chargers, and energy electronics.
Custom thermal platforms
BY Thermal can review cold plate structure against prototype and production requirements.
Custom process
Move from concept to quote-ready brazed cold plate
Submit drawings
Send the plate outline, heat source layout, coolant path concept, and package limits.
Review channel design
BY Thermal checks manufacturability, port layout, sealing surfaces, and flow constraints.
Confirm prototype
Prototype scope, inspection items, and acceptance criteria are aligned before build.
Prepare production
Approved drawings guide machining, brazing, inspection, cleaning, and packaging.
Related engineering pages
Continue comparing liquid cold plate manufacturing routes
These internal links connect the brazed cold plate product page with the brazing process page, related cold plate types, and the main liquid cooling category so engineers and search crawlers can follow the full topic path.
FAQ
Brazed cold plate questions
What is a brazed cold plate?
It is a sealed liquid cooling plate made by joining metal parts through a brazing process. The design may include machined channels, covers, fins, and manifolds.
What is the difference between brazed and embedded tube cold plates?
Brazed plates can support more complex internal flow paths and heat transfer features. Embedded tube cold plates use a tube path inside a plate and can be simpler for many layouts.
Can BY Thermal support custom internal channels?
Yes, channel layout can be reviewed from your drawing. Final geometry depends on material, pressure drop target, sealing needs, and manufacturability.
Do you provide leak testing?
Leak test and pressure requirements should be stated in the RFQ. BY Thermal can review the requested inspection method against the final cold plate structure.
Need a brazed cold plate quote?
Send drawings, coolant data, and inspection requirements for a manufacturing review.