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Cool Cooking with DM44 Durakool PCB Power Relays



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DM44 Datasheet

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Willow Technologies Limited introduces the Durakool DM44 PCB Power relay, originally developed by the Willow Team, to control the carcass cooling fan of wall mounted ovens, built into modern kitchen units. The DM44 is used in many domestic appliances, to turn on and off heating elements and to control cooling fans.

The DM44 has a 16A 277VAC rating suitable for heater and motor load switching. It operates between -30 to +105°C making it ideal for use in domestic appliances (white goods). Most PCB relays only operate up to 85°C and are usually placed in control panels, at the top of appliances, which is generally the hottest point. Inside white goods, such as cookers and washing machines, the temperature can rise higher than 85°C. Because the DM44 is able to operate up to 105°C, it is possible to locate multiple DM44s in various positions within appliances.

The relays have internal discrete silicon diodes for coil suppression and polarity reversal protection. The hybrid packaged RF700 & RF703 series reduces PCB floor space, by reducing the number of external components needed to drive the relay. The RF700 and RF703 are highly resistant to ESD eliminating the need for special precautions, whilst the hermetically sealed TO5 package provides excellent environmental protection and robustness. The minimum mass components and welded construction provide maximum resistance to shock and vibration.

John Merrill, Relay Product Manager at Willow Technologies, commented, All relays used in domestic appliances are controlled by a number of different standards, which must be met. Not every PCB relay will meet the requirements for cookers and washing machines.

The 5000Vrms coil to contact isolation of the DM44 PCB Power Relay meets international standards for use in domestic electrical equipment. This power relay has a long electrical life of 100,000 operations (at rated load at 105°C.)

You could say the DM44 is a really cool relay!. Concluded Merrill.


Editor Information


Willow Technologies Limited, founded in 1989, provides solutions to customers by designing, manufacturing and supplying components and systems to the electrical and electronic marketplace across the globe. Specialists in switching, sensing, resistive and hermetic seal solutions, the company has a wide portfolio of technologies and over 100 years of application experience. With an in-house engineering capability and a production facility for rapid prototyping of custom parts, the company is well equipped to develop products matching customer specific application requirements. Willow is ISO9001: 2008 Registered.

For further information please contact:

John Merrill, This e-mail address is being protected from spambots. You need JavaScript enabled to view it , +44 (0) 1342 717102.

Willow Technologies Ltd. Unit 3 Borers Yard, Borers Arms Road, Copthorne, West Sussex, RH10 3LH, UK

Tel: +44 (0) 1342 717102, Fax: +44 (0) 1342 717014, Email:

CORPORATE: Solid State Group

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