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ptc - ntc for surface mounting application ? this pdf catalog is downloaded from the website of murata manufacturing co., ltd. therefore, its specifications are subject to change or our products in it may be discontinued without advance notice. please check with our sales representatives or product engineers before ordering. ? this pdf catalog has only typical specifications because there is no space for detailed specifications. therefore, please app rove our product specifications or transact the approval sheet for product specifications before ordering. ! note r01e.pdf 09.11.4 http://
what is a thermistor? prf15/18 series chip posistor r for overheat sensing prf15 series characteristics therm ally sensitive res istor ntc n egativ e t emper ature c oefficient p ositiv e t emper ature c oefficient ptc thermistor char acter istics of ther mistors resistance - t emper ature char acter istics ptc ther mistor (posist or r ) batio 3 + x cer amics ntc ther mistor mn-ni, mn-co-cu, mn-ni + x ceramics log r t 2xr25 r25 25 cur ie p oint log r t r25 25 prf15/18 ptc chip ther mistors detect o v erheating of hybr id ics , p o w er t r ansistors , p o w er diodes and p o w er ics etc. 1. 0402 and 0603 light w eight 2. high gain simplifies circuit design 3. f ree of contact noise and prob lems 4. pb free plated ter minations 5. sturdy constr uction resists mechanical vibr ation and shoc k. 6. prf18xxx5rb series is available for reflow/flow soldering. r1 r l r e r2 prf ther mal contact ther mal contact +vcc gnd f an motor vref m prf compar ator p o w er ic control ic example (in mm) dimensions electrode constr uction cross-sectional nickel barrier sn plating ceramics ptc 0.1-0.4 1.0 0.05 0.5 0.05 0.5 0.05 part number sensing temperature (at 4.7k ohm) ( c) maximum voltage (v) resistance (at 25 c) (ohm) operating temperature range ( c) prf15bc471qb1rc 105 5 c 32 470 50% -20 to 120 prf15bb471qb1rc 115 5 c 32 470 50% -20 to 130 prf15ba471qb1rc 125 5 c 32 470 50% -20 to 140 this product is applied to reflow soldering. this product is recognized by ul. new ?this pdf catalog is downloaded from the website of murata manufacturing co., ltd. therefore, it? specifications are subject to change or our products in it may be discontinued without advance notice. please check with our sales representatives or product engineers before ordering. ?this pdf catalog has only typical specifications because there is no space for detailed specifications. therefore, please app rove our product specifications or transact the approval sheet for product specifications before ordering. ! note r01e.pdf 09.11.4
prf18 series characteristics (in mm) electrode constr uction cross-sectional nickel barrier sn plating ceramics ptc 0.1-0.6 1.6 0.15 0.8 0.15 0.8 0.15 dimensions part number resistance (at +25 c) (ohm) sensing temperature (at 4.7k ohm) ( c) maximum voltage (v) operating temperature range ( c) prf18ba103qb1rb low current consumption! 130 5 c -20 to 140 new 10k 50% 32 part number sensing temperature (at 4.7k ohm) ( c) sensing temperature (at 47k ohm) ( c) maximum voltage (v) resistance (at 25 c) (ohm) operating temperature range ( c) prf18bg471qb5rb 65 5 c 80 7 c 32 470 50% -20 to 90 prf18bf471qb5rb 75 5 c 90 7 c 32 470 50% -20 to 100 prf18be471qb5rb 85 5 c 100 7 c 32 470 50% -20 to 110 prf18bd471qb5rb 95 5 c 110 7 c 32 470 50% -20 to 120 prf18bc471qb5rb 105 5 c 120 7 c 32 470 50% -20 to 130 prf18bb471qb5rb 115 5 c 130 7 c 32 470 50% -20 to 140 prf18ba471qb5rb 125 5 c 140 7 c 32 470 50% -20 to 150 prf18ar471qb5rb 135 5 c 150 7 c 32 470 50% -20 to 160 prf18as471qb5rb 145 5 c - 32 470 50% -20 to 160 part number sensing temperature (at 4.7k ohm) ( c) maximum voltage (v) resistance (at 25 c) (ohm) operating temperature range ( c) prf18bg471rb5rb 65 3 c 32 470 50% -20 to 80 PRF18BF471RB5RB 75 3 c 32 470 50% -20 to 90 prf18be471rb5rb 85 3 c 32 470 50% -20 to 100 prf18bd471rb5rb 95 3 c 32 470 50% -20 to 110 prf18bc471rb5rb 105 3 c 32 470 50% -20 to 120 prf18bb471rb5rb 115 3 c 32 470 50% -20 to 130 chip tight tolerance type this product is applied to flow/reflow soldering. this product is recognized by ul. ? this pdf catalog is downloaded from the website of murata manufacturing co., ltd. therefore, its specifications are subject to change or our products in it may be discontinued without advance notice. please check with our sales representatives or product engineers before ordering. ? this pdf catalog has only typical specifications because there is no space for detailed specifications. therefore, please app rove our product specifications or transact the approval sheet for product specifications before ordering. ! note r01e.pdf 09.11.4
circuit examples the posist or r has the f ollo wing adv antages o v er bimetal de vices . 1. noise free 2. no contact prob lems 3. lo w pr ice the posist or r has the f ollo wing additional adv antages o v er zener diodes . 1. reduced n umbers of par ts used in circuits 2. reduced process costs of mounting par ts on pcbs 3. reduces occupied space, helping high density pcb mounting more than tw o pieces of posist or r can co v er m ulti hot spots w or king with a compar ator . fig. sho ws basic circuit idea to connect m ultiple posist or r in ser ies . when one posist or r detects o v erheat at least, a compar ator can w or k b y the shar p temper ature- resistance char acter istic. it easily allo ws changing a n umber of posist or r or sensing temper ature in the same basic circuit design. bimetal zener diode posist or r posistor r prf + - prf zener diode posist or r mounting area pa r t s 10x10 = 100mm 2 6x6 = 36mm 2 pa r ts diode t r ansistor resistor op . amp . ups 1 2 7 1 pa r ts posist or r t r ansistor resistor op . amp . ups 1 1 2 0 t otal 11 total 4 ptc1 r1 r4 v+in v?n comp out r2 r3 ptc2 ptc3 ptc4 vcc vcc + comp connection of m ultiple posist or r ? this pdf catalog is downloaded from the website of murata manufacturing co., ltd. therefore, its specifications are subject to change or our products in it may be discontinued without advance notice. please check with our sales representatives or product engineers before ordering. ? this pdf catalog has only typical specifications because there is no space for detailed specifications. therefore, please app rove our product specifications or transact the approval sheet for product specifications before ordering. ! note r01e.pdf 09.11.4
prg18/21 series chip posistor r for overcurrent protection prg series characteristics chip ther mistors pre v ent f ailure of appar atus due to e xcess current. 1. 0603 and 0805 light w eight 2. high gain simplifies circuit design 3. f ree of contact noise and prob lems 4. pb free plated ter minations 5. sturdy construction resists mechanical vibration and shock. load ptc ptc markets & applications of overheat sensing t emper ature fuse --- --- --- --- t emper ature fuse --- t emper ature fuse --- --- ntc ther mistor --- --- --- --- --- prf pc ser v er tv game video camer a lighting p o w er supply car a udio a udio air conditioner refr iger ator ppc/pr inter cop y machine p o w er supply lcd a c adapter dc-dc con v er ter a c adapter a c adapter dimmer dc-dc con v er ter amp lcd amp dc br ushless motor dc br ushless motor dc br ushless motor lamp ov erheat sensing of fet ov erheat sensing of p o w er supply ov erheat sensing f or in v er ter module of bac klight ov erheat sensing of fet ov erheat sensing of case ov erheat sensing of fet ov erheat sensing of fet ov erheat sensing of pcb ov erheat sensing of p o w er t r ov erheat sensing of fet ov erheat sensing of p o w er hybr id ic ov erheat sensing of case ov erheat sensing f or in v er ter of bac klight ov erheat sensing of p o w er hybr id ic ov erheat sensing of p o w er hybr id ic current limitation & ov erheat sensing of dr iv er ic ov erheat sensing of dr iv er ic ov erheat sensing of dr iv er ic ov erheat sensing of lamp star ter circuit part number max. voltage (v) hold current (at +60 c) (ma) hold current (at +25 c) (ma) trip current (at +25 c) (ma) trip current (at -10 c) (ma) max. current (ma) resistance (at +25 c) (ohm) prg18bb471mb1rb 24 7 10 21 25 60 470 20% prg18bb221mb1rb 24 10 14 29 35 130 220 20% prg18bb101mb1rb 24 15 21 45 55 300 100 20% prg18bb470mb1rb 24 20 29 61 75 630 47 20% prg18bb330mb1rb 24 25 36 71 85 900 33 20% prg18bc6r8mm1rb 20 80 120 260 320 3500 6.8 20% prg18bc4r7mm1rb 20 100 155 330 400 5000 4.7 20% prg18bc3r3mm1rb 12 120 180 400 480 4500 3.3 20% prg18bc2r2mm1rb 9 150 220 500 600 5000 2.2 20% prg18bc1r0mm1rb 6 220 330 740 850 7500 1.0 20% chip type 0603 size ? this pdf catalog is downloaded from the website of murata manufacturing co., ltd. therefore, its specifications are subject to change or our products in it may be discontinued without advance notice. please check with our sales representatives or product engineers before ordering. ? this pdf catalog has only typical specifications because there is no space for detailed specifications. therefore, please app rove our product specifications or transact the approval sheet for product specifications before ordering. ! note r01e.pdf 09.11.4
dimensions prg18bb prg21bb prg21bc l w t e b 1.6 0.15 0.8 0.15 0.1-0.6 - 2.0 0.2 1.25 0.2 0.2 min. 0.5 min. 2.0 0.2 1.25 0.2 0.9 0.2 0.2 min. 0.5 min. l ebe t w multilayer chip posistor r for overcurrent protection electrode constr uction cross-sectional nic k el barr ier prg18/21bc type sn plating ptc cer amics data here are ref erence only . specifications a v ailab le upon request. product to be e v aluated, confir med b y the user bef ore actu al use . descr iption here ma y be re vised without notice . posistor r ideas
markets & applications for overcurrent protection chip ntc thermistor ncp series chip resistor fuse resistor chip resistor --- prg note pc pd a rechargeab le batter y current limitation & ov ercurrent protection f or t r ic kle charging circuit current limitation & ov ercurrent protection f or control ic shor t-circuit protection f or signal line shor t-circuit protection f or lcd dr iv e module ov ercurrent protection ov ercurrent protection f or output circuit ov ercurrent protection shor t-circuit protection f or optical sensor dr iv er mother board et al. lcd dc-dc con v er ter dc-dc con v er ter signal line optical sensor tv game p o w er supply car a udio undefined circuit using t r circuit using t r leaded ptc --- 1. a common relationship betw een resistance and b constant in all siz es (0201/ 0402/ 0603/ 0805) off ers con v enience when do wnsizing. 2. no lead contained (pb free). 3. tight resistance toler ance of 1% (code f) a v ailab le on 10k ohm (0201, 0402, 0603), 47k ohm (0402, 0603) and 100k ohm (0201, 0402, 0603) products . 4. high solder ing heat resistant 5. high humidity resistant due to unique inner electrodes . silv er allo y nic k el plating tin plating ntc cer amics structure ncp plated t er minations ncp03 (0201 siz e) ncp15 (0402 siz e) ncp18 (0603 siz e) ncp21 (0805 siz e) l w t e 0.60 0.03 0.3 0.03 0.10-0.20 1.00 0.05 0.50 0.05 0.15-0.35 1.60 0.15 0.80 0.15 0.20-0.60 2.00 0.20 1.25 0.20 0.85 0.15 0.20-0.70 l e t w e dimensions (in mm) ? this pdf catalog is downloaded from the website of murata manufacturing co., ltd. therefore, its specifications are subject to change or our products in it may be discontinued without advance notice. please check with our sales representatives or product engineers before ordering. ? this pdf catalog has only typical specifications because there is no space for detailed specifications. therefore, please app rove our product specifications or transact the approval sheet for product specifications before ordering. ! note r01e.pdf 09.11.4
line-up of plated termination resistance at 25 c b-constant part number b-constant part number b-constant part number b-constant part number 11 ohm 22 ohm 33 ohm 47 ohm 68 ohm 100 ohm 150 ohm 220 ohm 330 ohm 470 ohm 680 ohm 1.0k ohm 1.5k ohm 2.2k ohm 3.3k ohm 4.7k ohm 6.8k ohm 10k ohm 15k ohm 22k ohm 33k ohm 47k ohm 68k ohm 100k ohm 150k ohm 220k ohm 330k ohm 470k ohm 680k ohm 1.0m ohm p/n in end packaging ncp03ys110* ncp03ys220* ncp03ys330* ncp03ys470* ncp03ys680* ncp03ys101* ncp03xc151* ncp03xc221* ncp03xc331* ncp03xc471* ncp03xc681* ncp03xm102* ncp03xm152* ncp03xm222* ncp03xm332* ncp03xm472* ncp03xh682* ncp03xh103* ncp03xh153* ncp03xh223* ncp03wf333* ncp03wb473* ncp03wf683* ncp03wf104* - - - - - - - - - - - - - - - - - - - - - - - 3900 k - - - 4485 k 4485 k 4485 k 4485 k 4485 k - - - - - - - - - - - - - - - - - - - - - ncp03xv103* - - - ncp03wl473* ncp03wl683* ncp03wl104* ncp03wl154* ncp03wl224* - - - - -40 to +125 c approx. 1.0 mw/ c 05rl 15 kpcs./reel - 2750 k 2750 k 2750 k 2750 k 2750 k 2750 k ( 3100 k ( 3100 k ( 3100 k ( 3100 k ( 3100 k 3500 k 3500 k 3500 k 3500 k 3500 k 3380 k 3380 k 3380 k 3380 k 4250 k 4050 k 4250 k 4250 k - - - - - - 0201 size ncp03 - 3100 k 3100 k 3100 k 3100 k 3250 k 3250 k 3500 k 3500 k 3650 k 3650 k 3650 k 3950 k 3950 k 3950 k 3500 k 3950 k 3380 k 3950 k 3950 k 4050 k 4050 k 4150 k 4250 k 4500 k 4500 k - 4500 k - - - ncp15xc220* ncp15xc330* ncp15xc470* ncp15xc680* ncp15xf101* ncp15xf151* ncp15xm221* ncp15xm331* ncp15xq471* ncp15xq681* ncp15xq102* ncp15xw152* ncp15xw222* ncp15xw332* ncp15xm472* ncp15xw682* ncp15xh103* ncp15xw153* ncp15xw223* ncp15wb333* ncp15wb473* ncp15wd683* ncp15wf104* ncp15wm154* ncp15wm224* - ncp15wm474* - - - - - - - - - - - - - - - - - - - 3900 k - 4485 k 4485 k 4485 k 4485 k 4485 k 4485 k - - - - - - - - - - - - - - - - - - - - - - ncp15xv103* - ncp15wl223* ncp15wl333* ncp15wl473* ncp15wl683* ncp15wl104* ncp15wl154* - - - - - -40 to +125 c approx. 1.0 mw/ c 03rc 10 kpcs./reel - done 0402 size ncp15 operating t emp. dissipation constant certified ul1434 recommended types coming soon! * resistance tolerance codes: f= 1%, e= 3%, j= 5% 10k ohm, 47k ohm, 100k ohm type have tight tolerance type ( 1%: ncp18xh103f03rb, ncp15xh103f03rc, ncp03xh103f05rl, ncp18wb473f10rb, ncp15wb473f03rc, ncp18wf104f12rb, ncp15wf104f03rc, ncp03wf104f05rl) ? this pdf catalog is downloaded from the website of murata manufacturing co., ltd. therefore, its specifications are subject to change or our products in it may be discontinued without advance notice. please check with our sales representatives or product engineers before ordering. ? this pdf catalog has only typical specifications because there is no space for detailed specifications. therefore, please app rove our product specifications or transact the approval sheet for product specifications before ordering. ! note r01e.pdf 09.11.4
resistance at 25 c b-constant part number b-constant part number b-constant part number 11 ohm 22 ohm 33 ohm 47 ohm 68 ohm 100 ohm 150 ohm 220 ohm 330 ohm 470 ohm 680 ohm 1.0k ohm 1.5k ohm 2.2k ohm 3.3k ohm 4.7k ohm 6.8k ohm 10k ohm 15k ohm 22k ohm 33k ohm 47k ohm 68k ohm 100k ohm 150k ohm 220k ohm 330k ohm 470k ohm 680k ohm 1.0m ohm p/n in end packaging - - - - - ncp18xf101* ncp18xf151* ncp18xm221* ncp18xm331* ncp18xq471* ncp18xq681* ncp18xq102* ncp18xw152* ncp18xw222* ncp18xw332* ncp18xm472* ncp18xw682* ncp18xh103* ncp18xw153* ncp18xw223* ncp18wb333* ncp18wb473* ncp18wd683* ncp18wf104* ncp18wm154* ncp18wm224* - ncp18wm474* - - - - - - - - - - - - - - - - - - - 3900 k - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ncp18xv103* - - - - - - - - - - - - -40 to +125 c approx. 1.0 mw/ c 03rb 4 kpcs./reel done - - - - - 3250 k 3250 k 3500 k 3500 k 3650 k 3650 k 3650 k 3950 k 3950 k 3950 k 3500 k 3950 k 3380 k 3950 k 3950 k 4050 k 4050 k 4150 k 4250 k 4500 k 4500 k - 4500 k - - 0603 size ncp18 - - - - - - - 3500 k - 3650 k - 3650 k - 3950 k - 3500 k - 3900 k 3950 k 3950 k 4050 k 4050 k - 4250 k - - - - - - - - - - - - - ncp21xm221* - ncp21xq471* - ncp21xq102* - ncp21xw222* - ncp21xm472* - ncp21xv103* ncp21xw153* ncp21xw223* ncp21wb333* ncp21wb473* - ncp21wf104* - - - - - - -40 to +125 c approx. 2.0 mw/ c 03ra 4 kpcs./reel done 0805 size ncp21 operating t emp. dissipation constant certified ul1434 recommended types * resistance tolerance codes: f= 1%, e= 3%, j= 5% 10k ohm, 47k ohm, 100k ohm type have tight tolerance type ( 1%: ncp18xh103f03rb, ncp15xh103f03rc, ncp03xh103f05rl, ncp18wb473f10rb, ncp15wb473f03rc, ncp18wf104f12rb, ncp15wf104f03rc, ncp03wf104f05rl) ? this pdf catalog is downloaded from the website of murata manufacturing co., ltd. therefore, its specifications are subject to change or our products in it may be discontinued without advance notice. please check with our sales representatives or product engineers before ordering. ? this pdf catalog has only typical specifications because there is no space for detailed specifications. therefore, please app rove our product specifications or transact the approval sheet for product specifications before ordering. ! note r01e.pdf 09.11.4
popular applications of chip ntc more popular applications of chip ntc lcd p o wer amplifier battery pack (li-ion / ni mh) r v ref ground lcd controller ntc r r vcc to antenna thermal connection pa module agc amp. rom r ntc li-ion thermal connection fet fet ic ntc ni mh thermal connection ptc ntc lcd contr ast control. dr iv e v oltage is compensated utilizing ntc s temper ature signal. high resistance v alues gener ally required, typically 33k ohms to 470k ohms t emper ature compensation of po w er amplifier (p a) module . ambient temper ature detection of charging time . detection of batter y cell heating in abnor mal circumstances . 47k ohm 5% 10k ohm 5% 10k ohm 1% ?tc.
cat. no. r01e-1 ? this pdf catalog is downloaded from the website of murata manufacturing co., ltd. therefore, its specifications are subject to change or our products in it may be discontinued without advance notice. please check with our sales representatives or product engineers before ordering. ? this pdf catalog has only typical specifications because there is no space for detailed specifications. therefore, please app rove our product specifications or transact the approval sheet for product specifications before ordering. ! note r01e.pdf 09.11.4

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