Injection Molding
Tooling and molding for your repeat plastic parts.
YOUR INTERFACES · YOUR CONDITIONS · YOUR ACCEPTANCE
Power Module Cooling
for Your Package, Contact Footprint & Approval Conditions
Match your power module cooling part to the exact package and mounting instructions. Review the contact surface, heat-source footprint, TIM or direct-fluid boundary, mounting features and acceptance evidence before choosing the manufacturing route.
Illustrative component concept
Drawing
Critical geometry & interfaces
Materials
Grades, condition & compatibility
Interfaces
Defined route & final state
Evidence
Agreed methods & records
Start with Your Package and Contact Boundary
Define the selected package, heat path, mounting and sample evidence before selecting a route.
- Identify the package and current mounting instructions
- Map dissipated losses and temperature nodes
- Review contact, mounting and coolant or airflow
- Agree component and platform acceptance separately
- Confirm the sample and acceptance evidence
Exact package and heat path
Identify the module part number, current datasheet and mounting instructions. Your power module cooling interface must state whether heat passes through a baseplate and TIM or an explicitly specified direct-fluid package interface. Do not infer that boundary from appearance.
Losses and contact footprint
Provide dissipated losses, source locations, duty cycle and named temperature limits. Keep power module cooling thermal resistance tied to the stated temperature nodes, interface stack and operating conditions. Separate steady-state and transient approval cases.
Mounting and service access
Define power module cold plate mounting holes, datums, keep-outs, support points and fastener access on the controlled drawing. State the available air path or coolant connections and which fittings, seals and brackets are included in the supplied part.
Quote and prototype scope
When comparing a power module cold plate manufacturer or power module heat sink manufacturer, review the supplied scope and required evidence. Your custom power module cold plate quote or custom power module heat sink quote should include material, quantities, final surfaces and sample checks. Mark the power module cooling prototype revision and approval owner.
Illustrative engineering concepts
Compare 4 Manufacturing Scopes for Your Module
Choose a route against the actual module and installed conditions. These concepts do not establish package compatibility, an operating power range or complete converter qualification.
Air-Cooled Heat Sinks
Review available airflow, fin direction, base contact and enclosure clearance.
Review this cooling scope →
Liquid Cold Plates
Define heat-source map, coolant, ports, contact lands and sample checks.
Review this cooling scope →
Machined Contact Interfaces
Review copper or aluminum geometry, mounting datums and final surface state.
Review this cooling scope →
Defined Component Assemblies
List mounting hardware, selected fittings, brackets and delivered records.
Review this cooling scope →Illustrative engineering concepts
Choose Your Cooling Part from the Actual Module Package
HEAT MAP & INTERFACES↓COMPONENTS & CONNECTIONS↓SAMPLE & AGREED CHECKS↓APPROVED FINISHED PART
Power module cooling plate machining starts with the released package drawing, mounting datums and final inspection state. Define the loss map and airflow for a heat sink, or the fluid, inlet conditions and flow for power module liquid cooling. Review SiC power module cooling against its specific package and operating inputs; semiconductor technology alone does not establish an interchangeable cooling interface.
- Define the supplied parts, material and connection boundary.
- Review your critical interfaces in their final production state.
- Agree sample evidence before repeat-order release.
Package context: Infineon HybridPACK 2 mounting guide → · Microchip AN6408 baseplate-less mounting scope → · onsemi F5 baseplate mounting guide →. Use the current guide for your exact package; numeric vendor limits and supplier compatibility are not generalized here.
Compare Your Cold-Plate Material References
Compare bulk conduction and mass alongside your module contact stack, coolant, coatings and manufacturing route. These references are not finished power module cooling tests or material substitution approvals.
Typical thermal conductivity
Hydro 6061-T6 at 25°C. KME Cu-ETP annealed at 20°C.
Density reference
Calculate finished mass from the actual geometry. A material conductivity difference does not establish a device-temperature reduction.
| Grade | European reference | Si | Fe | Cu | Mn | Mg | Zn | Al |
|---|---|---|---|---|---|---|---|---|
| 6061 | EN AW-6061 · AlMg1SiCu | 0.40–0.80 | ≤0.70 | 0.15–0.40 | ≤0.15 | 0.80–1.20 | ≤0.25 | Balance |
| C11000 | Cu-ETP · CW004A | — | — | ≥99.90 | — | — | — | — |
Selected elements only. Dash means not specified in this summary, not zero. 6061: Cr 0.04–0.35%, Ti ≤0.15%; C11000: O ≤0.040%; do not relabel Cu-ETP as oxygen-free copper. Aluminum other elements ≤0.05% each / ≤0.15% total. The purchasing standard and certificate govern. Confirm product form, temper, joining compatibility and required final condition.
Sources: Hydro 6061 → · KME Cu-ETP →
3 Views of Your Module Contact and Approval Plan
Compare geometric heat flux, package interface and evidence scope. The arithmetic is chosen for explanation and does not predict module temperature or finished cooling performance.
1 · Chosen footprint comparison
Chosen example: 100 W divided by 4, 16 or 24 cm² gives 25, 6.25 or approximately 4.17 W/cm². These are geometric averages, not package ratings, measured heat flux or temperature predictions. Actual source distribution, spreading, contact and convection still require review.
2 · Identify the real interface
EXACT PACKAGE + MOUNTING INSTRUCTIONS↓FLAT CONTACT STACK OR SPECIFIED FLUID BOUNDARY↓SUPPORT + SEALS + FINAL INSPECTION STATE
Do not interchange a baseplate, baseplate-less or direct-fluid package interface from a generic illustration. Match the selected module and installation documentation.
3 · Name the approval owners
PART GEOMETRY + MATERIAL + JOINING↓DEFINED LEAK / PRESSURE SCOPE↓THERMAL + HYDRAULIC + ELECTRICAL VALIDATION
Agree the configuration, losses, mounting, interface materials, sensors and operating cases. A dimensional or fluid-integrity record does not establish the module temperature or electrical qualification.
Review Your Surface and Cleanliness Requirements
Separate your thermal contact faces, sealing interfaces and wetted passages. Confirm the specified final condition with the mating assembly.
Define the module contact area and final surface inspection state from the released drawing.
Specify the finished thread, fitting engagement and agreed sealing surfaces.
Protect fins, finished contact faces and ports; agree cleaning and shipment condition.
A finish is not a universal cooling improvement. Confirm its purpose, compatibility and inspection state. Review surface finishing options →
Illustrative engineering concepts
Define Your Functional Features
Put the dimensions that control sealing, assembly fit and heat transfer on your drawing.
Illustrative power module cold plate section concept
Contact footprint
Module loss map, selected TIM and approved clamping stack
Ports and seals
Thread designation, seal land and fitting engagement
Mounting datums
Hole pattern, datum scheme and tool access
Cover and passages
Joining access, wall thickness and cleaning scope
Final condition
Flatness, masking, protected interfaces and inspection state
Resolve 6 Design Risks Before Your Order
Resolve contact flatness, TIM and isolation responsibility, connection checks, material, operating conditions and approval evidence.
Package-specific contact plane
Specify power module cooling plate flatness, roughness, inspection area and final manufacturing state from the selected package instructions and released drawing. A baseplate-less package and a baseplate package must not be assigned one assumed universal contact requirement.
Your input
Controlled drawing and the relevant service conditions.
Your acceptance
Agreed method, inspection state, limits and required records.
Illustrative engineering concept
TIM and isolation boundary
Review power module cooling electrical isolation with the selected module and approved interface system. Thermal contact, dielectric function and installation qualification are separate decisions. Do not assume that thermal grease or a coating supplies the required insulation.
Your input
Controlled drawing and the relevant service conditions.
Your acceptance
Agreed method, inspection state, limits and required records.
Illustrative engineering concept
Fluid integrity and joining
Agree power module cooling plate leak testing for the actual supplied plate, cover joint, plugs, fittings and seals. Define the medium, conditions, limit, duration and record. Pressure checks and thermal validation need their own approved scopes.
Your input
Controlled drawing and the relevant service conditions.
Your acceptance
Agreed method, inspection state, limits and required records.
Illustrative engineering concept
Material and fluid compatibility
Review power module cooling material compatibility across all wetted materials, coatings, seals and the specified coolant. Confirm grade, temper, joining route and final condition. The bulk conductivity table is not a fluid-compatibility approval or device-temperature prediction.
Your input
Controlled drawing and the relevant service conditions.
Your acceptance
Agreed method, inspection state, limits and required records.
Illustrative engineering concept
Flow and pressure allowance
Evaluate power module cooling pressure drop at the stated fluid, inlet temperature, flow and measurement boundary. For an air-cooled part, review installed airflow, fin direction and obstruction. Assign pump selection and overall thermal validation to the responsible system owner.
Your input
Controlled drawing and the relevant service conditions.
Your acceptance
Agreed method, inspection state, limits and required records.
Illustrative engineering concept
Sample and repeat release
Define power module cooling sample approval around the controlled revision, material, contact surface, mounting fit and specified records. Approve thermal, hydraulic and electrical performance separately for the installed module, interface and operating conditions.
Your input
Controlled drawing and the relevant service conditions.
Your acceptance
Agreed method, inspection state, limits and required records.
Illustrative engineering concept
5 Checkpoints from Drawing to Repeat Supply
Drawing review
Confirm revision, interfaces and operating inputs.
Route review
Agree materials, joining and final machining.
Sample build
Review the finished component and assembly fit.
Agreed checks
Assess specified dimensions, joints and test records.
Production release
Release the accepted revision, packaging and repeat-order scope.
Approve Your Manufactured Interface Before Repeat Supply
Illustrative component concept
Your package drawing and mounting instructions should trace to the final contact plane, mounting holes, fluid ports and delivered material records. Agree sample dimensions, fit, joining evidence, cleanliness and specified leak checks. The module or system owner approves thermal and electrical behavior under the agreed conditions.
- Material identity and drawing revision
- Module contact face, mounting datums and ports
- Specified joining and test evidence
- Contact-face and port protection, packaging and release
Match Your Cooling Part to the Released Power Module
These are component review contexts, not customer cases, automotive qualification, certified converters or endorsed package compatibility.
Industrial drives
Review the selected module loss map and installed cooling route.
Power converters
Control contact footprint, mounting and nearby keep-outs.
Renewable power equipment
Define operating conditions and the approval owner.
Charging power stages
Review coolant connections or available airflow.
Traction component prototypes
Match the released module interfaces and supplied part scope.
Power supply modules
State exact footprints and the dissipated losses.
Validation fixtures
Control TIM, mounting, sensor positions and operating inputs.
Replacement cooling parts
Match the exact module and installed revisions.
6 Inputs for Your Power Module Cooling Quote
- Exact module part number + current package instructions
- Dissipated losses, source footprint + duty cycle
- Contact stack or direct-fluid boundary + isolation owner
- Datums, holes, support points + keep-outs
- Installed airflow or coolant, inlet temperature + flow allowance
- Material, quantities + sample records and validation owner
Ask your quote to separate component manufacturing, joining, finishing, inspection and any independently agreed validation. The drawing review confirms availability, quantities and delivery scope.
Answers Before You Specify
What module data is needed to quote a power module cooling part?
Provide the exact part number, package and mounting documentation, controlled component and assembly drawings, loss map, temperature limits, duty cycle, contact stack or direct-fluid boundary, installed air or coolant conditions, quantities and required acceptance records.
Can one flatness specification cover every power module?
No. Use the current mounting instructions for the selected package and the controlled drawing. Contact area, baseplate construction, clamping arrangement, TIM and final inspection state differ. Do not copy a tolerance from an unrelated module or catalog illustration.
Does a power module thermal interface material provide electrical insulation?
Do not assume so. Confirm the dielectric function and installation requirements of the exact module and specified interface system. Thermal conductivity, electrical isolation and qualification are distinct properties and approval scopes.
Which tests are needed to approve a power module cold plate sample?
Agree material identity, final contact geometry, mounting and port dimensions, fit, cleanliness and any specified leak or pressure checks. Define thermal, hydraulic and electrical validation separately with losses, mounting, interface materials, operating inputs and sensor locations.
Are flat-base and direct-liquid-cooled packages interchangeable?
Not by default. Confirm the selected package's physical and fluid boundary, sealing geometry, support, mounting and approved coolant requirements. A change of package can require a different cooling part and a new validation plan.
Does a larger contact area guarantee a cooler module?
No. Contact area is one input alongside heat distribution, spreading, interface thickness, mounting and convection. The example chart compares chosen geometric heat flux only; it is not a temperature or thermal-resistance prediction.
