polyswitch? ptc devices overcurrent protection device product: mi crosmd2 5 0lr - a - 2 document: scd 2 8 2 61 rev letter: e rev date: july 26 , 201 6 page no.: 1 of 3 ? 2016 littelfuse,inc littelfuse.com specifications are subject to change without notice. revised july 26, 2016 specification status: re leased maximum electrical rating voltage: 6 v dc short circuit current: 5 0 a notes : 1. termination finish: niau 2. drawing not to scale 3. for battery application only marking: l table i. dimensions: a b c d e min max min max min max min max min mm: 3.00 3.43 0. 50 1. 00 2.35 2.80 0.25 0.75 0.076 in: (0.118) (0.135) (0.0 19 ) (0.0 39 ) (0.092) (0.110) (0.010) (0.030) (0.003) table ii. performance ratings: current ratin gs** time to trip** resistance values tripped - state power dissipation** amperes at 0c amperes at 20c amperes at 60c seconds at 20c, 9.5 a ohms at 20c watts at 20c, 6.0 v hold trip hold trip hold trip max min max* max 3.2 7.0 2.5 5.2 1.3 3 .0 5.0 .0 05 .0 18 1.0 * maximum resistance is measured 1 hour after reflow . ** values specified were determined using pcbs with 0.025 x 2.0 ounce copper traces. agency recognition: ul, csa reference document: ps300 precedence: th is specification takes precedence over documents referenced herein. effectivity: reference documents shall be the issue in effect on the date of invitation for bid. caution: operation beyond the rated voltage or current may result in rupture, electri cal arcing or flame. materials information rohs compliant elv compliant pb - free halogen free* * halogen free refers to: br 900ppm, cl 900ppm, br+cl 1500ppm . hf
polyswitch? ptc devices overcurrent protection device product: mi crosmd2 5 0lr - a - 2 document: scd 2 8 2 61 rev letter: e rev date: july 26 , 201 6 page no.: 2 of 3 ? 2016 littelfuse,inc littelfuse.com specifications are subject to change without notice. revised july 26, 2016 recommended pad layout (mm.) recommended reflow profile note: all temperatures refer to top side of the package, measured on the package body surface. solder ref low recommendation ? recommended reflow methods: ir, hot air and n itrogen ? recommended maximum solder paste thickness: 0.25mm ? recommended m ini mum stencil thickness: 0. 1 mm ? devices can be cleaned using standard methods and aqueous solvents. ? littelfuse believe s the optimum conditions for forming acceptable solder fillets occur when a reasonable amount of solder paste is placed underneath each device's termination. as such, we request that customers comply with our recommended solder pad layouts. ? customer should validate that the solder paste amount and reflow recommendations meet its application. ? littelfuse requests that customer board layouts refrain from placing raised features (e.g. vias, nomenclature, traces, etc.) underneath polyswitch devices. it is possibl e that raised features could negatively impact solderability performance of our devices. profile feature pb - free assembly average r amp u p r ate (ts max to tp) 3c/s max . preheat ? temperature m in . (ts min ) ? temperature m ax . (ts max ) ? time (ts min to ts max ) 150c 200c 60 - 120s time maintained above: ? temperature (t l ) ? time (t l ) 217c 60 - 150s peak/classification t emperature (tp) 260c time within 5c of actual p eak t emperature (tp) 30s max . ramp d own r ate 2 c/s max . time 25c to peak temperature 8 mins max. 1.00 2.00 1.00 2.65
polyswitch? ptc devices overcurrent protection device product: mi crosmd2 5 0lr - a - 2 document: scd 2 8 2 61 rev letter: e rev date: july 26 , 201 6 page no.: 3 of 3 ? 2016 littelfuse,inc littelfuse.com specifications are subject to change without notice. revised july 26, 2016 i nformation furnished is believed to be accurate and reliable. however, users should independently evaluate the suitability of and test each product selected for th eir own applications.littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitat ion, military, aerospace, medical, lifesaving, life - sustaining or nuclear facility applications, devices intended for surgi cal 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 ap plicable littelfuse product documentati on. 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 applicatio ns 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.
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