General Purpose Surface General Purpose Surface Purpose Surface Mounted Resistors Mounted Resistors Resistors Welwyn Components Welwyn Components WCR WCR SeriesSeries WCR Series Excellent reliability Excellent reliability reliability of sizes and ohmic Excellent WideWide rangerange of sizes and ohmic valuesvalues range ofterminations sizesterminations and ohmic values Wide WrapWrap around around · · · · Wrap InnerInner electrode protection around terminations electrode protection Inner electrode protection Electrical Data Electrical Data 0603 0805 1206 2010 2512 1210 0402 0201 0603 0805 1206 2010 2512 1210 0402 0201 0.1 0.125 0.25 0.5 1.0 0.25 0.05 0.063 Power rating @ 70C watts Resistance range 1M0 1R0 to 1M0 1R0 0.1 0.125 0.25 1.0 0.05 10R to0.063 0.25to 10M 0.5 Power rating @ 70 C watts ohms Limiting volts Resistance rangeelement votage ohms 10R 150 1R0 to 10M 25 to 1M0 50 200 to 1M0 1R0 200 250 LimitingTCR* element votage voltsppm/C 150 100 25 50 200 1 % 100 200 250 TCR* Resistance Tolerance ppm/C Standard values 1 E24 or E96 Resistance Tolerance % -55 to 155 Ambient C E24 or E96 Standard values temperature range Jumper Chip Rating 2 0.5 1 -55 to 1.5 155 AmbientZero-ohm temperature range C amps <50 Zero-ohm Chip Resistanceamps milliohms Zero-ohm Jumper Jumper Chip Rating 1.5 2 0.5 1 Zero-ohm Jumper Chip Resistance milliohms * Notes – TCR for low values <50 1R to 10R: -400 to +600ppm/ºC, 11R to 100R: ±200ppm/ºC TCR for high values 3M3 to 10M: ±300ppm/º * Notes – TCR for low values 1R to 10R: -400 to +600ppm/ºC, 11R to 100R: ±200ppm/ºC TCR for high values 3M3 to 10M: ±300ppm/º Physical Data Physical Data Dimensions (mm) L T C A Dimensions W Style(mm) 0201 L 0.6 ± 0.03 W 0.3 ± 0.03 T 0.23 ± 0.03 C 0.12 ± 0.05 A 0.15 ± 0.05 Style 1.0 ± 0.05 0.35 ± 0.05 0.2 ± 0.1 0.25 ± 0.1 0.5 ± 0.03 04020.6 ± 0.03 0.23 ± 0.03 0.12 ± 0.05 0.15 ± 0.05 0.3 ± 0.03 0201 1.6 ± 0.15 0.5 ± 0.15 0.25 ± 0.2 0.25 ± 0.2 0.8 ± 0.15 0603 1.0 ± 0.05 0.35 ± 0.05 0.2 ± 0.1 0.25 ± 0.1 0.5 ± 0.03 0402 -0.10± 0.20.4 ± 0.2 1.25+ 0.2 -0.1 08051.6 ± 0.152.0 ± 0.2 0.5 ± 0.5 0.15+ 0.15 0.25 0.25 ± 0.20.4 ± 0.2 0.8 ± 0.15 0603 3.2 +0.11.25+ -0.25 0.2 0.55 +0.150.4 -0.1± 0.2 0.5 + 0.2-0.25 0.5+ 0.2 -0.25 1.6 + 0.1 -0.15 12062.0 ± 0.2 0.5 + 0.15 -0.10 0.4 ± 0.2 -0.1 0805 + 0.1 0.55 +0.15 0.5 ± 0.25 0.5 ± 0.2 2.6 ± 0.55 0.15 +0.15 1210 3.2 +0.1 3.2 -0.25 -0.1 0.5-0.1 + 0.2-0.25 0.5+ 0.2 -0.25 1.6-0.2 + 0.1 -0.15 1206 5.0 ± 0.15 0.60 ± 0.25 0.60 ± 0.25 2.5 ± 0.55 0.15 +0.150.56 2010 3.2 + 0.1 -0.2 -0.1 ± 0.15 0.5 ± 0.25 0.5 ± 0.2 2.6 ± 0.15 1210 6.3 ± 0.15 0.56 ± 0.15 0.60 ± 0.25 0.60 ± 0.25 3.2 ± 0.15 25125.0 ± 0.15 0.56 ± 0.15 0.60 ± 0.25 0.60 ± 0.25 2.5 ± 0.15 2010 2512 6.3 ± 0.15 3.2 ± 0.15 0.56 ± 0.15 0.60 ± 0.25 0.60 ± 0.25 C C A A T T L L A W W A Wrap-around terminations (3 faces) Wrap-around terminations (3 faces) Figure 1 Construction Figure 1 The chips have a high alumina substrate (96% minimum) with Construction a ruthenium oxide resistance element silver palladium, The chips have a high alumina substrate (96%and minimum) with nickeloxide and tin plated terminations. glazed protection coat a ruthenium resistance element and A silver palladium, is applied to the resistive element (See Fig.1) coat nickel and tin plated terminations. A glazed protection is applied to the resistive element (See Fig.1) Terminations Solderability The terminations meet the requirements of Terminations IEC 115-1,meet Clause Solderability The terminations the4.17.3.2. requirements of IEC 115-1, Clause 4.17.3.2. Strength The terminations meet requirements of Strength The terminations meet requirements of IEC 68.2.21. IEC 68.2.21. Tin Plating Nickel Barrier Tin Plating Dipped Conductor Nickel Barrier Dipped Conductor Epoxy Melamine Protection Glass Dielectric Epoxy Melamine Protection Silver Resistance Element Palladium Glass Dielectric Silver Resistance Element Palladium 96% min Alumina Substrate 96% min Alumina Substrate General Note Welwyn Components reserves the right to make changes in product specification without notice or liability. General Note GeneralAll information is subject to Welwyn’s own data and is considered accurate at time of going to print. A subsidiary of Welwyn Components make changes in product specification or liability. TT electronics reservesreserves the rightthe to right maketo changes in product specification without without notice ornotice liability. TT electronics plc A subsidiary of All information is subject Components to Welwyn’s own Limited data and is· considered accurate at time ofNE22 going to print. Bedlington, Northumberland 7AA, UK © Welwyn All information is subject to TT electronics’ own data and is considered accurate at time of going to print. TT electronics plc www.bitechnologies.com Iss 07.03 Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: [email protected] · Website: www.welwyn-tt.com www.irctt.com www.welwyn-tt.com © Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK © TT electronics plc822181 · Facsimile: +44 (0) 1670 829465 · Email: [email protected] · Website: www.welwyn-tt.com Iss 07.03 Telephone: +44 (0) 1670 02.13 General Purpose Surface General Purpose Surface Mounted Resistors Mounted Resistors Welwyn Components WCR WCR Series Series Table 1 Marking All resistors are individually marked with 3 digits. The first two digits are the significant figures and the third defines the number of added zeros. Jumpers are marked 000. Types 0201 and 0402 have no marking. Resistance value ohms 100R >100R, 10K >10K, 100K >100K, 1M0 >1M0 E96 1% components that can not be marked with 4 digits will be marked with a standard 3 digit code. Details can be supplied upon request. Noise dB -10 0 +15 +20 +30 Solvent Resistance The protective epoxy lacquer and marking are resistant to all normal industrial cleaning fluids suitable for printed circuits. Performance Data Maximum Change 0201 Load: 1000 hrs at 70°C Shelf life: 12 months at room temp. 0402 0603 R% 10R-100K : 1 4R7-100K : 1 1R-100K : 1 R% 0805 1206 1210 2010 2512 >100K : 2 >100K : 2 1R-100K : 1 >100K : 2 1R-100K : 1 >100K : 2 1R-100K : 1 >100K : 2 1R-100K : 1 >100K : 2 3% + 0.1R >100K : 2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 zero @ 125 °C Derate linearly to zero from 70°C R% 2 2 2.5 2.5 2.5 2.5 2.5 5 Max voltage volts 50 100 100 200 400 400 400 400 Climatic R% 3 3 3 3 3 3 3 3 Short term overload (6.25 x rated power) Climatic Catagory 55/125/56 1 Long term damp heat R% Temperature rapid change R% 1 1 1 1 1 1 1 1 Resistance to solder heat R% 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 Vibration and bump R% 1 1 1 1 1 1 1 1 500 500 500 500 Noise see table 1 Insulation resistance ohms Voltage proof volts Packaging Packaging > 1G 100 All chips are tape mounted and supplied on standard 8mm All chips are tape mounted and supplied on standard 8mm tape reel, as IEC publication 286-3. tape reel, as IEC publication 286-3. 180mm (7 inch) reel is standard 180mm (10 (7 inch) standard carriesthe 5,000 pieces. 250mm inch)reel reeliscarrying double standard quantity (Except 0402 carries 10,000 pieces) can be supplied by agreement. 500 500 Chip Resistor Labstock For Designers Chip Resistor Labstock For Designers WCR chip resistors are available in a special package of the most WCR chip resistors are available in a special package of the most popular sizes containing 50 each of the E24 values. popular sizes containing 50 each of the E24 values. Please contact the sales desk for full details of this excellent Please contact the sales desk for full details of this excellent solution for designers and your prototype build requirements. Note: For zero ohm jumper chips use the dummy value & tolerance code R005J © Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK General Note Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: [email protected] · Website: www.welwyn-tt.com TT electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT electronics’ own data and is considered accurate at time of going to print. Issue D · 01.11 07.03 www.bitechnologies.com www.irctt.com www.welwyn-tt.com © TT electronics plc 02.13 General Purpose Surface Mounted Resistors WCR Series OrderingProcedure Procedure Ordering This product has two valid part numbers: European (Welwyn) Part Number: WCR1206-10KFI (1206, 10 kilohms ±1%, Pb-free) W C R 1 2 1 0 6 - 1 0 2 1 2 Type Size WCR 0201 0402 0603 0805 1206 1210 2010 2512 K 3 F I 4 5 3 4 5 Value Tolerance Packing E24 = 3 characters E96 = 4 characters R = ohms K = kilohms M = megohms F = ±1% I = Standard 0201 20000/reel 0402 10000/reel 0603, 0805, 5000/reel 1206, 1210 2010, 2512 4000/reel Note: For zero ohm jumper chips use the dummy value & tolerance code R005J USA (IRC) Part Number: WCR-WCR1206LF-1002FPLT (1206, 10 kilohms ±1%, Pb-free) W C R - W 1 1 R 1 2 2 2 Family Model WCR C WCR 0 6 L 3 F 1 0 4 0 2 5 F 6 P L T 7 3 4 5 6 7 Size Termination Value Tolerance Packing 0201 0402 0603 0805 1206 1210 2010 2512 LF = Pb-free 3 digits + multiplier R = ohms for values <100 ohms F = ±1% PLT = Paper Tape 0201 20000/reel 0402 10000/reel 0603, 0805, 5000/reel 1206, 1210 2010 4000/reel ELT = Plastic Tape 2512 4000/reel Note: For zero ohm jumper chips use value & tolerance code R000J General Note TT electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT electronics’ own data and is considered accurate at time of going to print. www.bitechnologies.com www.irctt.com www.welwyn-tt.com © TT electronics plc 02.13