? ? ? rev. 7 ? thin film current sensing chip resistor meritek CST series ? feature and applications ? thin film process ? high power rating up to 3 watts in 2512 size ? tight tolerance down to 0.5% ? extremely low tcr down to 50 ppm/c ? resistance values from 50m to 1ohm ? high purity alumina substrate for high power dissipation ? power management applications ? switching power supply ? over current protection in audio applications ? voltage regulation module (vrm) ? dc-dc converter, battery pack, charger, adaptor ? automotive engine control ? disk driver ? portable devices (pda, cell phone) ? ? p art n umbering s ystem recommend land pattern CST 0603 d x 1r00 f current sensing chip resistors size 0402 0603 0805 1206 2010 2512 tcr (ppm/c) d e f 50 100 200 power rating r t q u v w x y 3w 1w 3/4w 1/2w 1/4w 1/8w 1/10w 1/16w resistance value r010 r100 1r00 0.01 ? 0.1 ? 1 ? resistance tolerance code d f value 0.5% 1% ? ? derating curve ? ? ? ? ? ? ? ? ? ? ? ? type a b c CST0402 0.50 0.50 0.600.2 CST0603 0.80 1.00 0.900.2 CST0805 1.00 1.00 1.350.2 CST1206 2.00 1.15 1.700.2 CST2010 3.60 1.40 2.500.2 CST2512 4.90 1.60 3.100.2 0 20 40 60 80 100 0 20 40 60 80 100 120 140 160 180 ambient temperature( ) power ratio(%) b ? a ? c unit: mm
? ? ? rev. 7 ? thin film current sensing chip resistor meritek CST series construction unit: mm type size (inch) l w t d1 d2 weight (g) (1000pcs) CST0402 0402 1.000.05 0.500.05 0.320.10 0.250.10 0.200.10 0.56 CST0603 0603 1.600.10 0.800.10 0.450.10 0.300.20 0.300.20 3.1 CST0805 0805 2.000.15 1.250.15 0.550.10 0.300.20 0.400.25 5.6 CST1206 1206 3.050.15 1.550.15 0.550.10 0.500.30 0.400.25 12.3 CST2010 2010 5.000.20 2.450.15 0.600.15 0.600.30 0.500.25 26.7 CST2512 2512 6.350.20 3.150.15 0.600.10 0.600.30 0.550.25 49.6 ? standard electrical specifications ???? item ? type power rating at 70 ? c operating temp. range resistance range (m ? ) tcr (ppm/ ? c) 0.5% 1% CST0402 1/16w -55~+155 ? c 500 - 1000 100 50 CST0603 1/10w -55~+155 ? c 200 - 300 301 - 1000 100 50 CST0805 1/8w 200 - 300 301 - 1000 100 50 CST1206 1/4w -55~+155 ? c 50 - 100 200 100 50 101 - 300 301 - 1000 CST2010 3/4w -55~+155 ? c 50 - 100 101 - 300 301 - 1000 200 100 50 CST2512 1w -55~+155 ? c 50 - 100 101 - 300 301 - 1000 200 100 50 high power rating elect rical specifications ? ???? item type power rating at 70 ? c operating temp. range resistance range (m ? ) tcr (ppm/ ? c) 1% CST2512 3w -55~+155 ? c 100 - 1000 100 operating voltage= (p*r) overload voltage=2.5* (p*r) ? ? alumina substrate ? edge electrode (nicr) ? resistor layer (nicr) ? bottom electrode (ag) ? barrier layer (ni) ? overcoat (epoxy) ? top electrode (ag-pd) ? external electrode (sn) ? marking l t d d2 w ? ? ? ? ? ? ? ? ?
? ? ? rev. 7 ? thin film current sensing chip resistor meritek CST series ? environmental characteristics ? item requirement test method temperature coefficient of resistance (t.c.r.) as spec. mil-std-202f method 304 +25/-55/+25/+125/+25 ? c short time overload 1% jis \ c \ 5201 \ 1 5.5 rcwv*2.5 or max. overload voltage for 5 seconds insulation resistance >1000m ? mil \ std \ 202f method 302 apply 100v dc for 1 minute endurance 1% mil-std-202f method 108a 70 ? 2 ? c, max. working voltage for 1000 hrs with 1.5 hrs ?on? and 0.5 hrs ?off? damp heat with load 0.5% mil-std-202f method 103b 40 ? 2 ? c, 90~95% r.h. max. working voltage for 1000 hrs with 1.5 hrs ?on? and 0.5 hrs ?off? bending strength as spec. jis \ c \ 5201 \ 1 6.1.4 bending amplitude 3mm for 10 seconds solderability 95% min. coverage mil-std-202f method 208h 245 ? 5 ? c for 3 seconds resistance to soldering heat 0.5% mil-std-202f method 210e 260 ? 5 ? c for 10 seconds dielectric withstand voltage by type mil-std-202f method 301 apply max. overload voltage for l minute thermal shock 0.5% mil-std-202f method 107g -55 ? c ~150 ? c, 100 cycles low temperature operation 0.5% jis-c-5201-1 7.1 1 hour, -65 ? c followed by 45 minutes of rcwv storage temperature: 253c; humidity < 80%rh ? reflow ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
? ? ? rev. 7 ? thin film current sensing chip resistor meritek CST series ? packaging ? paper tape specifications w e f d 0 p 1 p 2 p 0 direction of unreeling a b top tape bottom tape resistor paper tape t ? unit: mm type a b w e f p0 p1 p2 d0 t CST0402 0.700.05 1.160.05 8.000.10 1.750.05 3.50.05 4.000.10 2.000.05 2.000.05 1.550.05 0.400.03 CST0603 1.100.05 1.900.05 8.000.10 1.750.05 3.50.05 4.000.10 4.000.10 2.000.05 1.550.05 0.600.03 CST0805 1.600.05 2.370.05 8.000.10 1.750.05 3.50.05 4.000.10 4.000.10 2.000.05 1.550.05 0.750.05 CST1206 2.000.05 3.550.05 8.000.10 1.750.05 3.50.05 4.000.10 4.000.10 2.000.05 1.550.05 0.750.05 ? ? peel force of top cover tape ? the peel speed shall be about 300mm/min5% ? the peel force of top cover tape shall be between 10 to 100g ? ? type a b c w t paper tape (ea) emboss plastic tape (ea) CST0402 178.01.0 60.0+1.0 13.50.7 9.51.0 11.51.0 10,000 CST0603 178.01.0 60.0+1.0 13.50.7 9.51.0 11.51.0 5,000 - CST0805 178.01.0 60.0+1.0 13.50.7 9.51.0 11.51.0 5,000 - CST1206 178.01.0 60.0+1.0 13.50.7 9.51.0 11.51.0 5,000 - CST2010 178.01.0 60.0+1.0 13.50.7 13.51.00 15.51.0 - 4,000 CST2512 178.01.0 60.0+1.0 13.50.7 13.51.00 15.51.0 - 4,000
? ? ? rev. 7 ? thin film current sensing chip resistor meritek CST series emboss plastic tape specifications w e f d 0 p 1 p 2 p 0 direction of unreeling a b top tape resistor emboss tape t d 1 1.4min. ??????????? unit: mm type a b w e f p 0 p 1 p 2 d 0 t CST2010 2.850.10 5.450.10 12.00.10 1.750.10 5.50.05 4.000.05 4.000.10 2.000.05 1.50+0.10 1.000.20 CST2512 3.400.10 6.650.10 12.00.10 1.750.10 5.50.05 4.000.05 4.000.10 2.000.05 1.50+0.10 1.000.20 ? peel force of top cover tape ? the peel speed shall be about 300mm/min5% ? the peel force of top cover tape shall be between 10 to 130g ? ?? ? marking 0603 3digit marking example resistance 1 ? 0.1 ? 0.15 ? 0.01 ? 0.101 ? 0.035 ? codes 1r0 r10 r15 r01 101 035 0805~2512 4digit marking example ? ? ? ? ? ? ? ? ? resistance 1 ? 0.1 ? 0.05 ? 0.015 ? 0.01 ? codes 1r00 r100 r050 r015 r010
? ? ? rev. 7 ? thin film current sensing chip resistor meritek CST series ? ?
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