PTC HEATERS (Self-Regulating) Providing Electronic Solutions Self-regulating heater bespoke assembly, suitable for adhesive mounting or clamping. Typical applications - Sensitive electronics that should be maintained at an optimum heat temperature. Description:~ A pre-calibrated set of PTC discs mounted in series, onto a copper substrate, with lead attachments. Specification:~ Features Options Self-regulating heater Wire – stranded - solid Suitable for adhesive or clamp mounting Wire lengths Typical thickness 3mm ROHS compliant Wire Insulation Customised Copper substrate Resistances and switch temperatures can be reviewed. Currently Available PTC Outputs:~ Type 1 Type 2 Operating Temperature -40°C + 85°C -35°C to +85°C Suitable for voltage 22 to 35 V dc 12 – 28 V dc or ac Breakdown voltage Power output Resistance VBR -40°C 5.5W max TA -40°C 5.5W max TA +50°C 0.2W max TA +50°C 0.2W max 15.0 ohms ±10% R-35 2.5 ohms nominal 4.5k ohms Min R+50 750 ohms nominal R-40 R+85 Switching Temperature VBR TA R+50 Surface temperature >100 Vrms 2.0M ohms Min TA +35°C at ambient –20°C TA +25°C at ambient 35°C TA +20°C at –50°C ambient TA +20°C at –50°C ambient Tb -10°C ref Tb -5°C ref Notes:~ Samples are supplied for evaluation purposes only. If it is intended to subject the product to a qualification approval program involving endurance & environmental tests please consult Willow Technologies Ltd. Willow Technologies Ltd. Shawlands Court, Newchapel Road, Lingfield, Surrey, RH7 6BL, United Kingdom Tel: + 44 (0) 1342 835234 Fax: + 44 (0) 1342 834306 [email protected] http://www.willow.co.uk