PORTABLE MEDICAL DEVICES PROTECTION/media/electronics/... · technology, these circuit protection devices can ... The touch screens, antennas, and USB interfaces of wearable device
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Littelfuse.com
QUICK REFERENCE GUIDE
Littelfuse overvoltage, overcurrent and overtemperature circuit protection devices help designers provide effective protection for portable medical products.
PolyZen DevicesPolyZen devices are polymer enhanced precision Zener diode that help protect
sensitive electronics from damage caused by inductive voltage spikes, voltage
transients, use of incorrect power supplies and reverse bias. Well suited for cigarette
lighter adaptor chargers, DC power port protection, cell phone charger port and
infotainment power.
Features• Overvoltage transient suppression
• Hold currents up to 2.6A
• Time delayed, overvoltage trip
• Time delayed, reverse bias trip
• Power handling on the order of 30 Watts
• Integrated device construction
• RoHS compliant and halogen free
Benefits• Helps shield downstream electronics from overvoltage and reverse bias
• Trip events shut out overvoltage and reverse bias sources
• Analog nature of trip events minimizes upstream inductive spikes
• Helps reduce design costs with single component placement and minimal heat sinking requirements
ESD Protection DevicesLittelfuse PESD line of devices helps protect I/O ports on HDMI 1.3, portable video
players, digital visual interface (DVI) and antenna switches. PESD devices shut
electrostatic discharge away from sensitive circuitry in portable devices.
Features• Low capacitance: 0.25pF (typ)
• Low leakage current
• Low clamping voltage
• Fast response time (<1ns)
• Capable of withstanding numerous ESD strikes
• Bi-directional protection
• Thick film technology
Benefits• ESD protection for high-frequency applications (HDMI 1.3)
• Smaller form factor for board space savings
• Helps protect sensitive electronic circuits against damage caused by electrostatic discharge (ESD) events
Notice:
Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse.