polyswitch? ptc devices overcurrent protection device product : lvr0 08ns - 1 document : scd27400 r ev letter: f rev date: july 26, 2016 page no.: 1 of 3 ? 2016 littelfuse, inc. littelfuse.com specifications are subject to change without notice. revised july 26 , 20 16 specification status: released rated operating voltage at 20 c (ac/dc): 240 v maximum interrupt voltage / current at 20 c (ac/dc): 265 v , 1. 2 a 135 v, 20 a insulating material: cured, flame retardant epoxy polymer lead material: 2 4 awg sn - plate d copper (0. 5 1 mm/0.0 20 nominal diameter) marking: table i. dimensions: a b c d e min max min max min max min max min max mm: -- 7.2 -- 10.2 4.3 5.8 25.4 -- -- 4.6 in:* -- ( 0. 2 8 ) -- (0. 40 ) (0.17) (0.23) ( 1.0 0) -- -- (0. 18) *rounded off approximation table i i. performance ratings @ 20 c (as measured in loranger p/n 02901 - 032 - 6218a) : hold current (a) trip current (a) resistance () time to trip(sec) @ 0 . 4 a post - trip resistance () tripped - state power dissipation @ 2 65 v (w) r min r max max max * nom max 0.0 8 0.1 9 7.4 12.0 10.0 26.0 0.9 1. 2 *post trip resistance measure d after one hour. agency recognition s : ul (file #e74889 ), csa (file #78165), tuv , cqc ref erence documents: ps300 p recedence: this specification takes precedence o ver documents referenced herein effectivity: reference documents shall be the issue in effect on the date of invitation for bid warning: refer to page 2 of this document for application limitations materials information rohs compliant elv compliant pb - free
polyswitch? ptc devices overcurrent protection device product : lvr0 08ns - 1 document : scd27400 r ev letter: f rev date: july 26, 2016 page no.: 2 of 3 ? 2016 littelfuse, inc. littelfuse.com specifications are subject to change without notice. revised july 26 , 20 16 warning: application limitations for the lvr product line 1. users should independently evaluate the suitability of a nd test each product selected for their own application. 2. this product should not be used in an application where the maximum interrupt voltage or maximum interrupt current can be exceeded in a fault condition. operation beyond the maximum ratings or impro per use may result in device damage and possible electrical arcing and flame. 3. a pptc device is not a fuse - it is a nonlinear thermistor that limits current. under a fault condition all pptc devices go into a high resistance state but do not open circuit, so hazardous voltage may be present at pptc locations. 4. the devices are intended for protection against occasional overcurrent or overtemperature fault conditions and should not be used when repeated fault conditions or prolonged trip events are anticipate d. 5. in most applications, power must be removed and the fault condition cleared in order to reset a pptc device; however, under certain unusual conditions, a pptc device may automatically reset. pptc devices should not be used in an application where an a utomatic reset could create a safety hazard, such as garbage disposals and blenders. appropriate qualification testing should be performed. 6. it is the responsibility of the user to determine the need for back up or fail safe protection to prevent damage tha t may occur in the event of abnormal function or failure of the ptc device. 7. operation in circuits with a large inductance can generate a circuit voltage (ldi/dt) above the rated voltage of a pptc device. this product should not be used in an application where the maximum interrupt voltage or maximum interrupt current can be exceeded by inductive spikes. 8. devices are not recommended for reflow soldering. 9. device performance can be impacted negatively if devices are handled in a manner inconsistent with reco mmended electronic, thermal, or mechanical procedures for electronic components. 10. ptc devices are not recommended to be installed in applications where the device is constrained such that its ptc properties are inhibited, for example in rigid potting mater ials or in rigid housings, which lack adequate clearance to accommodate device expansion. 11. contamination of the ptc material with certain silicone - based oils or some aggressive solvents can adversely impact the performance of the devices.
polyswitch? ptc devices overcurrent protection device product : lvr0 08ns - 1 document : scd27400 r ev letter: f rev date: july 26, 2016 page no.: 3 of 3 ? 2016 littelfuse, inc. littelfuse.com specifications are subject to change without notice. revised july 26 , 20 16 i nform ation 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, lifesaving, 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 oper ation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applic able littelfuse product documentation. w arranties granted by littelfuse shall be deemed void for products used for any purpose n ot 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 documentatio n. the sale and use of littelfuse products is subject to littelfuse terms and conditions of sale, unless otherwise agreed by littelfuse .
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