Ultramic 600 advanced ceramic heaters are available in smaller sizes, a few millimeters width and several centimeters long. The high-thermal conductivity aluminum nitride ceramic composition is paired with a proprietary, thermally matched, heating element for a fast responding heater in a low-mass package. A leakage current of less than 10 µA makes the device easier for medical devices to pass the 500 µA, IEC 60601, total system requirement the first time. Watlow Inc, 12001 Lackland Rd., St. Louis, MO 63146, (314) 878-4600, info.hotims.com/18364-256