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Rev. 7 Current Sensing Chip Resistor MERITEK CSR Series 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 R100 1R00 0.01Ω 0.1 Ω 1 Ω Resistance Tolerance Code F G J Value ±1% ±2% ±5% Derating Curve 100 0 20 40 60 80 100 120 140 160 180 Ambient Temperature(℃) Power ratio(%)
Rev. 7 Current Sensing Chip Resistor MERITEK CSR Series Construction Unit: mm Type Size (Inch) L W T D1 D2 Weight (g) (1000pcs) CSR2512 (2W) 2512 CSR2512 (2W) 2512 Alumina Substrate Edge Electrode (NiCr) Resistor Layer (Ag/Pd) Bottom Electrode (Ag) Barrier Layer (Ni) Primary Overcoat (Glass) Top Electrode (Ag-Pd) External Electrode (Sn) Secondary Overcoat (Epoxy) L T w
Rev. 7 Current Sensing Chip Resistor MERITEK CSR Series Standard Electrical Specifications I t e m Type Power Rating at 70°C Operating Temp. Range Resistance Range (mΩ) TCR CSR0201 1/20W -55 ~ +155C 100 - 149 150 - 500 501 - 1000 ±1000 ±600 ±300 CSR0402 1/16W 50 - 100 101 - 500 501 - 1000 ±400 ±300 ±200 CSR0603 1/10W 20 - 50 51 - 100 101 - 500 501 - 1000 ±600 ±400 ±300 ±200 CSR0805 1/8W 20 - 50 51 - 100 101 - 500 501 - 1000 ±600 ±400 ±300 ±200 CSR1206 1/4W 10 - 20 21 - 50 51 - 99 100 - 1000 ±600 ±400 ±300 ±200 CSR1210 1/2W CSR2010 3/4W CSR2512 1W CSR1225 3W 3 - 5 6 - 20 21 - 30 31 - 250 251 - 8000 ±300 ±200 ±150 ±100 ±200 CSR3720 1W 10 - 19 20 - 500 ±300 ±150 CSR7520 2W － 1 - 4 ±300 5 - 10 11 - 350 ±200 ±150 High Power Rating Electrical Specifications Item Type Power Rating at 70°C Operating Temp. Range Resistance Range (mΩ) TCR (PPM/°C) ±1% ±2% ±5% CSR0402 1/8W -55 ~ +155C 51 - 100 101 - 500 501 - 1000 ±400 ±300 ±200 CSR0603 1/8W CSR0805 1/4W CSR1206 1/2W 10 - 20 21 - 50 51 - 99 100 - 1000 ±600 ±400 ±300 ±200 CSR1210 3/4W CSR2010 1W CSR2512 1.5W CSR2512 2W
Rev. 7 Current Sensing Chip Resistor MERITEK CSR Series Low TCR Electrical Specifications Item Type Power Rating at 70°C Operating Temp. Range Resistance Range (mΩ) TCR (PPM/°C) ±1% ±2% ±5% CSR0805 1/8W -55 ~ +155C 100 - 1000 ±100 CSR1206 1/4W 100 - 1000 ±100 CSR1210 1/2W 75 - 1000 ±100 CSR2010 3/4W 50 - 1000 ±100 CSR2512 1W 20 - 1000 ±100 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 I R R e f l o w S o l d e r i n g W a v e S o l d e r i n g ( F l o w S o l d e r i n g ) (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 MERITEK CSR Series Environmental Characteristics Item Requirement Test Method Temperature Coefficient of Resistance (T.C.R.) As Spec. JIS C 5201-1 4.8 IEC 60115-1 4.8 -55C~+125C, 25C is the reference temperature Short Time Overload IEC 60115-1 4.13 RCWV*2.5 or Max. overload voltage for 5 seconds (1.0%+0.05Ω) for high power rating Insulation Resistance ≧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 Bending Strength As Spec. JIS C 5201‐1 4.33 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 Individual leaching area ≦5% Total leaching area ≦10% JIS C 5201-1 4.18 IEC 60068-2-58 8.2.1 2605C for 30 seconds Rapid Change of Temperature (0.5%+0.05Ω) 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 Current Sensing Chip Resistor MERITEK CSR Series Packaging P a c k a g i n g Q u a n t i t y & R e e l S p e c i f i c a t i o n s U nit :mm Paper Tape Specifications Unit: mm Type ψA ΦB ψC W T Paper Tape (EA) Emboss Plastic Tape (EA) Type A B W E F P0 P1 P2 ΦD0 T W E F ψ D 0 P1 P2 P0 direction of unreeling A B Top TapeBottom Tape ResistorPaper Tape T
Rev. 7 Current Sensing Chip Resistor MERITEK CSR Series Emboss Plastic Tape Specifications Marking for 0603 Type Code 1R0 1.000 Ω R10 0.100 Ω R01 0.010 Ω 101 0.101Ω 035 0.035Ω Recommend Land Pattern Pad Layout (Except For CSR2512: High Power Rating Series) Unit ：mm Pad Layout (For CSR2512: High Power Rating Series) Unit ：mm Type A B W E F P0 P1 P2 ψD0 T CSR2512 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 Type Resistance A B C CSR2512 10~99 m Ω 4.9 1.6 3.1±0.2 CSR2512 100~1000m Ω 1.0 3.55 3.1±0.2 W E F ψ D 0 P1 P2 P0 direction of unreeling A B Top Tape Resistor Emboss Tape T ψ D1 1.4Min. B A C