CSR Series Current Sensing Chip Resistor MERITEK Feature and Applications Low TCR of ±100 PPM/°C Resistance values from 1m to 1 ohm 3 Watts power rating in 1 Watt size, 1225 package High purity alumina substrate for high power dissipation Long side terminations with higher power rating 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 PART NUMBERING SYSTEM CSR 0603 G U 1001 C Current Sensing Chip Resistors SIZE 0201 0402 0603 0805 1206 1210 2010 2512 1225 3720 7520 TCR (PPM/°C) E F G H J K R ±100 ±200 ±300 ±400 ±600 ±150 ±1000 Power Rating S A T Q U V W 2W 1.5W 1W 3/4W 1/2W 1/4W 1/8W Resistance Value R010 0.01Ω Resistance Tolerance Code F Value ±1% R100 0.1Ω 1R00 1Ω G ±2% J ±5% Derating Curve Power ratio(%) 100 80 60 40 20 0 0 20 40 60 80 100 120 140 160 180 Ambient Temperature(℃) Rev. 7 Current Sensing Chip Resistor CSR Series MERITEK Construction L D1 w T Alumina Substrate Bottom Electrode (Ag) Top Electrode (Ag-Pd) Edge Electrode (NiCr) Barrier Layer (Ni) External Electrode (Sn) Resistor Layer (Ag/Pd) Primary Overcoat (Glass) Secondary Overcoat (Epoxy) D2 Unit: mm Weight (g) Type Size (Inch) L W T D1 D2 CSR0201 0201 0.60±0.03 0.30±0.03 0.23±0.05 0.12±0.05 0.15±0.05 0.18 CSR0402 0402 1.00±0.05 0.50±0.05 0.32±0.10 0.25±0.10 0.20±0.10 0.7 CSR0603 0603 1.60±0.10 0.80±0.10 0.45±0.10 0.30±0.20 0.30±0.20 1.99 CSR0805 0805 2.00±0.10 1.25±0.10 0.55±0.10 0.30±0.20 0.40±0.25 5.3 CSR1206 1206 3.10±0.10 1.55±0.10 0.55±0.10 0.50±0.30 0.40±0.25 8.82 CSR1210 1210 3.10±0.10 2.60±0.15 0.55±0.10 0.50±0.30 0.50±0.25 15.5 CSR2010 2010 5.00±0.10 2.50±0.15 0.60±0.15 0.60±0.30 0.50±0.25 27.03 CSR2512 2512 6.35±0.10 3.10±0.15 0.60±0.10 0.60±0.30 0.55±0.25 43.08 CSR2512 (2W) CSR2512 (2W) 2512 6.35±0.20 3.15±0.15 0.74±0.10 0.60±0.30 0.55±0.25 53.08 (100 - 1000mΩ) 6.35±0.20 3.15±0.15 0.74±0.10 0.60±0.30 2.10±0.10 53.08 CSR1225 1225 3.10±0.15 6.30±0.15 0.90±0.15 0.60±0.30 0.55±0.25 64.88 CSR3720 3720 2.00±0.20 3.75±0.20 0.60±0.10 0.40±0.20 0.40±0.20 19.96 CSR7520 7520 2.00±0.20 7.50±0.30 0.60±0.10 0.40±0.20 0.40±0.20 35.71 (10 - 99mΩ) 2512 (1000pcs) Rev. 7 CSR Series Current Sensing Chip Resistor MERITEK Standard Electrical Specifications Item Type Power Rating at 70°C CSR0201 1/20W CSR0402 1/16W CSR0603 1/10W CSR0805 1/8W CSR1206 CSR1210 CSR2010 CSR2512 1/4W 1/2W 3/4W 1W CSR1225 3W CSR3720 1W CSR7520 2W Operating Temp. Range -55 ~ +155C Resistance Range (mΩ) ±1% ±2% ±5% 100 - 149 150 - 500 501 - 1000 50 - 100 101 - 500 501 - 1000 20 - 50 51 - 100 101 - 500 501 - 1000 20 - 50 51 - 100 101 - 500 501 - 1000 10 - 20 21 - 50 51 - 99 100 - 1000 3-5 6 - 20 21 - 30 31 - 250 251 - 8000 10 - 19 20 - 500 － 1-4 5 - 10 11 - 350 TCR (PPM/°C) ±1000 ±600 ±300 ±400 ±300 ±200 ±600 ±400 ±300 ±200 ±600 ±400 ±300 ±200 ±600 ±400 ±300 ±200 ±300 ±200 ±150 ±100 ±200 ±300 ±150 ±300 ±200 ±150 High Power Rating Electrical Specifications Item Power Rating at 70°C Operating Temp. Range Type CSR0402 1/8W CSR0603 1/8W CSR0805 1/4W CSR1206 1/2W CSR1210 3/4W CSR2010 1W CSR2512 1.5W CSR2512 2W Resistance Range (mΩ) ±1% ±2% ±5% TCR (PPM/°C) 51 - 100 101 - 500 501 - 1000 ±400 ±300 ±200 10 - 20 21 - 50 51 - 99 100 - 1000 ±600 ±400 ±300 ±200 -55 ~ +155C Rev. 7 CSR Series Current Sensing Chip Resistor MERITEK Low TCR Electrical Specifications Item Power Rating at 70°C Operating Temp. Range Type Resistance Range (mΩ) ±1% ±2% ±5% TCR (PPM/°C) CSR0805 1/8W 100 - 1000 ±100 CSR1206 1/4W 100 - 1000 ±100 CSR1210 1/2W 75 - 1000 ±100 CSR2010 3/4W 50 - 1000 ±100 20 - 1000 ±100 -55 ~ +155C CSR2512 1W CSR2512 2W 50 - 1000 ±100 CSR3720 1W 100 - 500 ±100 CSR7520 2W 50 - 350 ±100 Operating Voltage=√(P*R) ; Overload Voltage=2.5*√(P*R) ; Operating Current=√(P/R) Soldering Condition IR Reflow Soldering Wave Soldering (Flow Soldering) (1)Time of IR reflow soldering at maximum temperature point 260C：10s (2)Time of wave soldering at maximum temperature point 260C：10s (3)Time of soldering iron at maximum temperature point 410C：5s Rev. 7 Current Sensing Chip Resistor CSR Series MERITEK Environmental Characteristics Item Requirement Test Method JIS C 5201-1 4.8 Temperature Coefficient of Resistance As Spec. (T.C.R.) IEC 60115-1 4.8 -55C~+125C, 25C is the reference temperature (0.5%+0.05Ω) Short Time Overload (1.0%+0.05Ω) for high power rating JIS C 5201-1 4.13 IEC 60115-1 4.13 RCWV*2.5 or Max. overload voltage for 5 seconds ≧10G JIS C 5201-1 4.6 IEC 60115-1 4.6 Max. overload voltage for 1 minute Endurance (1.0%+0.05Ω) JIS C 5201-1 4.25 IEC 60115-1 4.25.1 702C, Max. working voltage for 1000 hrs with 1.5 hrs “ON” and 0.5 hrs “OFF” Damp Heat with Load (0.5%+0.05Ω) JIS C 5201-1 4.24 402C, 90~95% R.H., Max. working voltage for 1000 hrs with 1.5 hrs “ON” and 0.5 hrs “OFF” Dry Heat (0.5%+0.05Ω) JIS C 5201-1 4.23.2 IEC 60115-1 2.23.2 at +155C for 1000 hrs Insulation Resistance JIS C 5201‐1 4.33 Bending Strength As Spec. IEC 60115-1 4.33 Bending once for 5 seconds with 3mm 2010, 2512 sizes: 2 mm Solderability 95% min. coverage JIS C 5201-1 4.17 IEC 60115-1 4.17 2455C for 3 seconds Resistance to Soldering Heat (0.5%+0.05Ω) JIS C 5201-1 4.18 IEC 60115-1 4.18 2605C for 10 seconds Voltage Proof No breakdown or flashover JIS C 5201-1 4.7 IEC 60115-1 4.7 1.42 times RCWV (RMS) for 1 minute Leaching Rapid Change of Temperature Individual leaching area ≦5% Total leaching area ≦10% (0.5%+0.05Ω) JIS C 5201-1 4.18 IEC 60068-2-58 8.2.1 2605C for 30 seconds JIS C 5201-1 4.19 IEC 60115-1 4.19 -55C to +155C, 5 cycles Storage Temperature: 25±3°C; Humidity < 80%RH Rev. 7 CSR Series Current Sensing Chip Resistor MERITEK Packaging Packaging Quantity & Reel Specifications Unit :mm Emboss Plastic Tape (EA) Type ψA ΦB ψC W T Paper Tape (EA) CSR0201 178.0±1.0 60.0+1.0 13.5±0.7 9.5±0.1 11.5±1.0 10,000 CSR0402 178.0±1.0 60.0+1.0 13.5±0.7 9.5±0.1 11.5±1.0 10,000 - CSR0603 178.0±1.0 60.0+1.0 13.5±0.7 9.5±0.1 11.5±1.0 5,000 - CSR0805 178.0±1.0 60.0+1.0 13.5±0.7 9.5±0.1 11.5±1.0 5,000 - CSR1206 178.0±1.0 60.0+1.0 13.5±0.7 9.5±0.1 11.5±1.0 5,000 - CSR1210 178.0±1.0 60.0+1.0 13.5±0.7 9.5±0.1 11.5±1.0 5,000 CSR2010 178.0±1.0 60.0+1.0 13.5±0.7 13.5±1.0 15.5±1.0 - 4,000 CSR2512 178.0±1.0 60.0+1.0 13.5±0.7 13.5±1.0 15.5±1.0 - 4,000 CSR2512 (2W) 178.0±1.0 60.0+1.0 13.5±0.7 13.5±1.0 15.5±1.0 - 2,000 CSR1225 178.0±1.0 60.0+1.0 13.5±0.7 13.5±1.0 15.5±1.0 - 2,000 CSR3720 178.0±1.0 60.0+1.0 13.5±0.7 13.5±1.0 15.5±1.0 - 2,000 CSR7520 178.0±1.0 60.0+1.0 13.5±0.7 17.5±1.0 19.5±1.0 - 2,000 Paper Tape Specifications T o p T ap e B o tto m T ap e ψ D0 E A F B T P ap er T ap e P1 R esisto r P2 P0 W d irectio n o f u n reelin g Unit: mm Type A B W E F P0 P1 P2 ΦD0 T CSR0201 0.38±0.05 0.68±0.05 8.0±0.20 1.75±0.10 3.50±0.05 4.00±0.10 2.00±0.05 2.00±0.05 1.50+0.1,-0 0.42±0.20 CSR0402 0.65±0.10 1.15±0.10 8.0±0.20 1.75±0.10 3.50±0.05 4.00±0.10 2.00±0.05 2.00±0.05 1.50+0.1,-0 0.45±0.10 CSR0603 1.10±0.10 1.90±0.10 8.0±0.20 1.75±0.10 3.50±0.05 4.00±0.10 4.00±0.05 2.00±0.05 1.50+0.1,-0 0.70±0.10 CSR0805 1.60±0.10 2.40±0.20 8.0±0.20 1.75±0.10 3.50±0.05 4.00±0.10 4.00±0.05 2.00±0.05 1.50+0.1,-0 0.85±0.10 CSR1206 1.90±0.10 3.50±0.20 8.0±0.20 1.75±0.10 3.50±0.05 4.00±0.10 4.00±0.05 2.00±0.05 1.50+0.1,-0 0.85±0.10 CSR1210 2.90±0.10 3.50±0.20 8.0±0.20 1.75±0.10 3.50±0.05 4.00±0.10 4.00±0.05 2.00±0.05 1.50+0.1,-0 0.85±0.10 Rev. 7 CSR Series Current Sensing Chip Resistor MERITEK Emboss Plastic Tape Specifications Top Tape ψ D0 E A F B W ψ D1 1.4Min. T P1 Resistor P2 P0 direction of unreeling Emboss Tape Type A B W E F P0 P1 P2 ψD0 T CSR2010 2.80±0.10 5.50±0.10 12.0±0.30 1.75±0.10 5.5±0.05 4.00±0.05 4.00±0.10 2.00±0.05 1.50+0.10 1.00±0.20 CSR2512 3.50±0.10 6.70±0.10 12.0±0.30 1.75±0.10 5.5±0.05 4.00±0.05 4.00±0.10 2.00±0.05 1.50+0.10 1.00±0.20 3.38±0.10 6.68±0.10 12.0±0.30 1.75±0.10 5.5±0.10 4.00±0.10 4.00±0.10 2.00±0.05 1.55+0.05 1.45±0.20 CSR1225 3.38±0.10 6.68±0.10 12.0±0.30 1.75±0.10 5.5±0.10 4.00±0.10 4.00±0.10 2.00±0.05 1.55+0.05 1.45±0.20 CSR3720 2.50±0.20 4.45±0.20 12.0±0.30 1.75±0.10 5.5±0.05 4.00 ±0.05 4.00±0.10 2.00±0.05 1.50+0.10 1.20 ±0.20 CSR7520 2.50±0.20 8.30±0.20 16.0±0.30 1.75±0.10 7.8±0.05 4.00±0.05 4.00±0.10 2.00±0.05 1.50+0.10 1.20 ±0.20 CSR2512 (2W) Marking for 0603 Type Code 1R0 1.000Ω R10 0.100Ω R01 0.010Ω 101 0.101Ω 035 0.035Ω Recommend Land Pattern C B A Pad Layout (Except For CSR2512: High Power Rating Series) Unit：mm Type A B C CSR0201 0.25 0.30 0.40±0.2 CSR0402 0.50 0.50 0.60±0.2 CSR0603 0.80 1.00 0.90±0.2 CSR0805 1.00 1.00 1.35±0.2 CSR1206 2.00 1.15 1.70±0.2 CSR1210 2.00 1.15 2.50±0.2 CSR2010 3.60 1.40 2.50±0.2 CSR2512 4.90 1.60 3.10±0.2 CSR1225 2.00 2.00 6.40±0.2 CSR3720 1.00 1.80 3.90±0.2 CSR7520 1.00 1.80 7.60±0.2 Pad Layout (For CSR2512: High Power Rating Series) Unit：mm Type Resistance A B C CSR2512 10~99 mΩ 4.9 1.6 3.1±0.2 CSR2512 100~1000mΩ 1.0 3.55 3.1±0.2 Rev. 7