PWC_V01 TTELEC | Alldatasheet
Document overview
- Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
- PDF pages: 4
Technical content
Excellent pulse withstand performance Improved working voltage Improved power rating Custom designs available Anti-sulphur version available Pulse Withstanding Chip Resistors PWC Series Excellent pulse withstand performance Improved working voltage Improved power rating Standard chip sizes (0805 to 2512) Custom designs available General Note Welwyn Components reserves the right to make changes in product specification without notice or liability. All information is subject to Welwyn’s own data and is considered accurate at time of going to print. © Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com Electrical Data 07. 08 A subsidiary of TT electronics plc Physical Data Construction Thick film resistor material, overglaze and organic protection are screen printed on a 96% alumina substrate. Wrap-around terminations have an electroplated nickel barrier and solder coating, this ensures excellent ‘leach’ resistance properties and solderability. Marking Components are not marked. Reels are marked with type, value, tolerance, date code and quantity. Solvent Resistance The body protection is resistant to all normal industrial cleaning solvents suitable for printed circuits. Dimensions (mm) & weight (mg) PWC0805PWC0603Size Power @70°C W Resistance range ohms Tolerance % LEV V TCR ppm/°C Operating temperature °C Thermal Impedance °C/W Pad / trace area * Values 0.25 150 200 400 500 1R0 to 10M 10R to 1M: 0.5, All values: 1, 5 <10R:200 ≥10R:100 E24 or E96 preferred - other values to special order See graphs – full application note available on request -55 to +155 0.33 0.5 0.75 1.5 21 220 160 145 80 55 4070 0.125 302 30 50 125 60 100 500250mm2 PWC1206 PWC2010 PWC2512 1206 0805 2010 2512 Pulse Capability L W A C Wt.T max B min T W C A A L B Wrap-around terminations (3 faces) *Recommended minimum pad & adjacent trace area for each termination for rated power dissipation on FR4 PCB Welwyn Components Note that anti-sulphur version parts below 100R are produced in flip-chip format with the resistor element on the underside. Resistors 09.18 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. © TT Electronics plc www.ttelectronics.com/resistors BI Technologies IRC Welwyn All Pb-free parts comply with EU Directive 2011/65/EU amended by (EU) 2015/863 (RoHS3)All Pb-free parts comply with EU Directive 2011/65/EU amended by (EU) 2015/863 (RoHS3)
© Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com 07. 08 Performance Data Welwyn Components Pulse Performance Data Lightning Surge Lightning surge resistors are tested in accordance with IEC 60 115-1 using both 1.2/50µs and 10/700µs pulse shapes. 10 pulses are applied. The limit of acceptance is a shift in resistance of less than 1% from the initial value. Size Maximum Typical Load at rated power: 1000 hours at 70°C ΔR% 1 0.25 Shelf life test: 12 months at room temperature ΔR% 0.1 0.02 Derating from rated power at 70°C Zero at 155°C Overload: 6.25 x rated power for 2 seconds ΔR% 1 0.1 Dry heat: 1000 hours at 155°C ΔR% 1 0.2 Long term damp heat ΔR% 1 0.25 Temperature rapid change ΔR% 0.25 0.05 Resistance to solder heat ΔR% 0.25 0.05 Resistance to sulphur-bearing gas (AS version only): ASTM-B-809 0.25 0.05 Voltage proof Volts 500 Note: A 0.01 Ohm addition to be added to the performance of all resistors <10 Ohms. Pulse Performance Data Lightning Surge Lightning surge resistors are tested in accordance with IEC 60 115-1 using both 1.2/50µs and 10/700µs pulse shapes. 10 pulses are applied. The limit of acceptance is a shift in resistance of less than 1% from the initial value. 2512 2010 1206 0805 0603 2512 2010 1206 0805 0603 09.18 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. © TT Electronics plc www.ttelectronics.com/resistors BI Technologies IRC Welwyn
The single impulse graph is the result of 50 impulses of rectangular shape applied at one minute intervals. The limit of acceptance was a shift in resistance of less than 1% from the initial value. Continuous Load Due to Repetitive Pulses The continuous load graph was obtained by applying repetitive rectangular pulses where the pulse period was adjusted so that the average power dissipated in the resistor was equal to its rated power at 70°C. Again the limit of acceptance was a shift in resistance of less than 1% from the initial value Pulse Withstanding Chip Resistors PWC Series 2512 2010 1206 0805 0603 2512 2010 1206 0805 0603 09.18 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. © TT Electronics plc www.ttelectronics.com/resistors BI Technologies IRC Welwyn
Temperature Derating Curve 125 Ambient Temperature /° C % of Rated Power 100 5510751- Pulse Withstanding Chip Resistors PWC Series © Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com Thermal Performance Data 09. 09 Welwyn Components Application Note PWC resistors themselves can operate at a maximum temperature of 155°C. For soldered resistors, the joint temperature should not exceed 110°C. This condition is met when the stated power levels at 70°C and recommended pad and trace areas are used. Pad and trace area is defined as the total area of the solder pad plus all copper trace within two squares of the edge of the solder pad. Allowance should be made if smaller areas of copper are used. A full Application Note on the PWC Series is available. Packaging 0603, 0805 and 1206 resistors are supplied on 8mm carrier tape and 2010 and 2512 resistors are supplied on 12mm carrier tape, all on 7 inch reels as per IEC 286-3. Ordering Procedure This product has two valid part numbers: Pulse Withstanding Chip Resistors PWC Series Ordering Procedure This product has two valid part numbers: European (Welwyn) Part Number: PWC2512-2K0JI (2512, 2 kilohms ±5%, Pb-free) P W C 2 5 1 2 - 2 K 0 J I 1 2 3 4 5 6 USA (IRC) Part Number: PWC-PWC2512LF-2K00-J (2512, 2 kilohms ±5%, Pb-free) P W C - P W C 2 5 1 2 L F - 2 K 0 0 - J 1 2 3 4 5 6 1 2 3 4 5 6 Type Size Anti-Sulphur Value Tolerance Termination & Packing PWC 0603 Omit for standard E24 = 3/4 characters D = ±0.5% AS = Anti-sulphur E96 = 3/4 characters F = ±1% 0805, 1206, 2010 3000/reel R = ohms J = ±5% K = kilohms 2512 1800/reel M = megohms All sizes 1000/reel 1 2 3 4 5 6 Family Model Size Termination Value Tolerance Packing PWC PWC Omit for SnPb D = ±0.5% Plastic tape LF = Pb-free F = ±1% 1206, 2010 3000/reel J = ±5% 2512 1800/reel I = Pb-free, Standard, PB = SnPb, Standard T1 = Pb-free, 1K reel E24 = 4 characters E96 = 4 characters R = ohms K = kilohms M = megohms 2512 2010 1206 0805 1206 2010 2512 0603 5000/reel 09.18 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. © TT Electronics plc www.ttelectronics.com/resistors BI Technologies IRC Welwyn