Product Type: Fans / Thermal Management

RadiCal®

The innovative styling of ebm-papst RadiCal impellers optimizes airflow and minimizes acoustic noise. Combine these maintenance-free impellers with ebm-papst GreenTech EC motors with continuous speed control, and you have the most efficient, flexible, and quietest centrifugal fans on the market!

Key Markets & Applications

  • Air Purification
  • Cabinet Cooling
  • Data Center
  • Electronics Cooling
  • HVAC
  • Medical
  • Mobile

IP68 Fans

For air movement applications in harsh environments, look no further than ebm-papst’s IP68-rated fans. These DC centrifugal and tubeaxial air movers range from 60mm to 190mm and feature fully encapsulated electronics. This encapsulation ensures optimal and reliable operation in challenging environments where components may be exposed to dust or water and also protects users from potentially harmful contact.

Target markets: Alternative Energy, Appliance, Commercial Refrigeration, Heating, IT/Telecom, LED Lighting, Transportation

Diagonal Compact Modules

Diagonal Compact Modules combine the optimal features of both axial and centrifugal blades to deliver high airflow at relatively high pressure. The innovative design is ideal for dissipating thermal loads in control cabinets as it reduces hot spots and provides uniform airflow, all while working as efficiently and quietly as possible. Compared to the traditional AC fans commonly used for cabinet cooling, the Diagonal Compact Modules offer up to 49% lower energy consumption, up to 50% better air performance in nominal operation, and they are completely preassembled for easy plug-and-play use (they can also be installed for both airflow directions making them extremely versatile). Optional grill guards are available for the outlet and intake side.

Target markets/applications: Commercial Refrigeration, Ventilation, control cabinets, variable frequency drives, electronic cooling, inverter cooling, standard cooling for industrial applications

Automotive BLDC Fans for Commercial Vehicles

Climate control in commercial vehicles is not just a luxury, it’s a critical component. Whether in a bus transporting people, a refrigerated truck transporting perishable goods, or the cabs of tractors and construction machinery, high demands are placed on vehicle technology; predominantly air conditioning, ventilation, and heating. ebm-papst delivers reliable, long-lasting, and quiet solutions for both commercial vehicle air conditioning and cooling of individual components. Their EC technology has set precedents in efficiency in even the hottest regions around the globe.

Applications

  • Mobile climate control
  • Refrigerated transport
  • Front boxes
  • Cabin air-conditioning for tractors/trucks

Click here for a brochure.

Board-Level Heat Sinks

Board-level heat sinks are so named because they are generally attached both to the device and the PCB. Usually constructed as either a stamping or an extrusion, these heat sinks are designed for common package sizes like T0220, T0247, and D2pak. Stamped heat sink can have features that clip onto the device so that a screw or secondary clip is not required. Stamped heat sinks have bent/twisted fins to improve the thermal performance in either natural or forced convection. Aluminum stampings are anodized for improved performance in natural convection. If the heat sink is to be mounted to the PCB, then a solderable tab or pin can be attached to the heat sink.

BGA heat sinks are so named because they are mounted to BGA devices, but are actually just simple extrusions. BGA heat sinks are usually crosscut to convert the extruded fins into pins that allow them to be used in more diverse applications. The number and size of the crosscuts are dependent upon the environment. Because BGA heat sinks are generally small, the attachment of the heat sink is a challenge. The heat sinks can be either attached to the device or to the PCB depending upon the application and the mechanical requirements. Thermal tape/Epoxy is a common method usually associated with low-power devices. While not the best thermal interface material, they serve their purpose.

Pushpins are another common attachment method and require two small holes in the PCB. Because the holes are generally just outside the boundaries of the device, they can make chip routing difficult. The pushpin, which can be made from plastic or metal, uses the energy of a small spring to provide enough force to keep the heat sink in place.

In cases where the pushpin’s holes are not practical, anchors and wire clips can be used as an alternative. The anchors are either soldered to the PCB using two small holes per anchor or can be installed in a routed slot in the PCB. In the case of the slot, the anchor is installed from the back side of the PCB and is held in place by the compression force in the anchor design. The advantage of the anchors is that their location is much more flexible and can be moved out of the way of traces in the PCB. A wire clip is a small diameter wire that is bent into various shapes that when deformed, engages with the anchors and applies a force to the heat sink to hold it in location. The actual shape of the wire clips is dependent upon the location of the anchors, the heat sink design, and the amount of force required. Multiple wire clips can be used with a single heat sink in applications where a higher force is required. Wire clips are removable and allow the heat sink to be reused in the case of a reworked device.

Since the pushpins and wire clips are a mechanical attachment method, it opens up the type of interface material that can be used between the heat sink and the chip, which can lead to better performance.

Custom and Standard Thermal Extrusions

Extruded heat sinks are the most common heat sink used for thermal management today. They are manufactured by pushing hot aluminum billets through a steel die to produce the final shape. The most common aluminum alloy is 6063-T5, but other 6XXX alloys can also be examined as needed. When the material is extruded, the initial sticks are 30-40 feet in length and are very soft. The material is stretched by grabbing both ends to produce a straight stick. After stretching, the material can be either air or overaged depending upon the required final hardness of the material. After the aging process, the material is cut to the final length and any final fabrication (holes, pockets, or other secondary machining) can be done. Extruded heat sinks are usually supplied with a “finish” such as anodizing, which can enhance its thermal performance. The heat sinks can also be supplied with a chromate finish which provides some corrosion protection or can be used as a primer before a final paint or powder coating is applied. While each extruded shape is unique to the requirements that it was designed for, extruded heat sinks are the most cost-effective cooling solution. Each shape is engineered to achieve optimal thermal and structural performance. Wakefield Thermal partners with a large list of vendors that ensure that you have the best thermal solution based on your system structure and thermal requirements.

Motorized Impellers

Centrifugal Fans

133mm-404mm

Backward-curved impellers offer maximum air movement and heat dissipation to extend electronic components and system operating life. They are designed for cooling cabinets, air filtration, networking, and ventilation systems. Optional duct rings and models designed for harsh environments are available.

AC Centrifugal Fans

133mm-404mm

Available in 115V and 230V

Required Capacitor Included

Other sizes and customizations available.

DC Centrifugal Fans

133mm-250mm

Available in 12V, 24V, and 48V.

Tachometer and PWM Included on all models.

Other sizes, voltages, and customizations available.

EC Fans

60mm-254mm

Electronically Commutated (EC) Fans offer a low-power, energy-efficient cooling solution with an AC input. These fans incorporate internal power conversion from AC to DC and then use a brushless DC motor for significantly lower power consumption. These fans are perfect for applications where you have AC power available but need the energy efficiency of a DC fan.

Available in 115VAC, 230VAC, Dual Voltage, or Universal Range with custom voltages available upon request.

Additional IP ratings and ATEX certification for Zone 2 are available.

Plastic Fan Guards and Plastic Guard Assemblies

GardTec plastic guards and filter assemblies are designed to fit all AC, DC, and EC axial fans.

GardTec, Inc. offers a full line (40mm to 162mm) of plastic guards and plastic guard assemblies. The guards are designed to offer the greatest amount of airflow while creating very low levels of noise. The plastic guard material is UL rated at 94V-0, the highest flammability rating.

To read the differences between UL94V-0 and UL94V-1, click here.

The plastic guard assemblies consist of a guard, a foam filter, and a retainer. The guard and retainer are UL94V-O and the foam filter is manufactured to meet UL94HF1 smoke generation requirements.

Features

  • Multiple variations in standard sizes
  • Easy to change filter application
  • UL Compliant
  • Filter media options (30ppi, 45ppi, 60ppi and 100ppi (pores per inch))
  • REACH/RoHS compliant

PART NUMBERS (for reference only)

  • SC160-P15/60
  • SC120-P40
  • SC92-P10
  • SC80-P30
  • SC60-P15/30

Fan Cords

GardTec, Inc. manufactures a full line of standard and custom fan cords to meet any project’s needs. The UL-approved fan cords are designed to meet specific customer requirements, including terminal connections, heat shrink, labeling, stripping, and tinning.

Features

  • Multiple Head Plug Styles
  • Daisy Chain
  • UL Compliant
  • 2 and 3 Conductor
  • Tracer Cords for use with DC Fans
  • REACH/RoHS compliant

PART NUMBERS (for reference only)

  • HP75-72P
  • HP100-24
  • HP50-36
  • HP100-48
  • HP100-36P