PR4 TTELEC | Alldatasheet
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Precision Metal Film Resistors PR series Low cost precision resistors Tolerances down to ±0.1% TCR down to 15ppm/°C 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 PR4 PR5 Power rating at 70°C watts 0.25 0.5 Resistance range ohms 100R – 1M Limiting element voltage volts 250 350 TCR (20°C to 70°C) ppm/°C □≤240K: 15, 25, 50 >240K: 25, 50 Standard values E24, E96 Thermal impedance °C/watt 140 112 Ambient temperature range °C -55 to 155 Electrical Data Physical Data 03.10 A subsidiary of TT electronics plc Welwyn Components 182 LD f d Construction The resistance element is a precisely controlled thin film of metal alloy sputtered on to a high purity ceramic core, protected by a moisture-resistant, high dielectric strength coating applied so that terminations remain completely clear. This permits a well defined body length (clean lead to clean lead dimension L). Terminations Material Hot tin dipped copper wire Strength The terminations meet the requirements of IEC 68.2.21 Solderability The terminations meet the requirements of IEC 115-1, Clause 4.17.3.2 Marking 25ppm/°C resistors are colour coded with 5 bands. The other grades have an additional 6th band indicating TCR which is orange for 15ppm/°C and red for 50ppm/°C. Solvent Resistance The body protection and marking are resistant to all normal industrial cleaning solvents suitable for printed circuits. Precision Metal Film Resistors PR series
- Low cost precision resistors
- Tolerances down to ±0.1%
- TCR down to 15ppm/°C Dimensions (mm) & Weight (g) PC Min. Wt. nom mounting bend Type L Max D Max f min d nom centres radius PR4 6.2 2.5 21 0.6 10.2 PR5 9.0 0.6 0.3 Resistors 06.18 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)
Load: 1000 hours at 70°C ∆ 5.0% R C°551 ta orezC°07 ta rewop detar morf gnitareD Short term overload ∆ 52.0% R Climatic ∆ 5.0% R Climatic category 55/125/56 Long term damp heat ∆ 5.0% R Temperature rapid change ∆ 52.0% R Resistance to solder heat ∆ 52.0% R Vibration and bump ∆ 1.0% R G1 >smhoecnatsiser noitalusnI PR4: 500 min, PR5: 700 minstlovfoorp egatloV Precision Metal Film Resistors PR 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 183 03.10 Welwyn Components Performance Data Packaging All PR resistors are supplied tape packed ready for loading on to automatic sequencing and insertion machines. Component wires will not protrude beyond the outside edge of the tapes. Alternative packaging available by request. Lead formed resistors can also be supplied. Standard options of Lancet, Radial and Goalpost forming are available. f1 f2 Body location f1 – f2 ≤ 1.4 mm PR_C.qxd 1/5/03 8:58 am Page 2 Ordering Procedure Example: PR4 with TCR of 15ppm/°C at 10 kilohms and 0.1% tolerance in an ammo pack box of 5000 pieces - P R 4 Y – 1 0 K B I Type TCR Y 15 ppm/ °C 25 ppm/ °C 50 ppm/ °C Value (use IEC62 code) Tolerance (use IEC62 code) B 0.1% D 0.5% C 0.25% F 1% Packing I Ammo PR4 5000/box StandardPR5 2500/box C Maximum Load: 1000 hours at 70°C ∆ 5.0% R C°551 ta orezC°07 ta rewop detar morf gnitareD Short term overload ∆ 52.0% R Climatic ∆ 5.0% R Climatic category 55/125/56 Long term damp heat ∆ 5.0% R Temperature rapid change ∆ 52.0% R Resistance to solder heat ∆ 52.0% R Vibration and bump ∆ 1.0% R G1 >smhoecnatsiser noitalusnI PR4: 500 min, PR5: 700 minstlovfoorp egatloV Precision Metal Film Resistors PR 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 183 03.10 Welwyn Components Performance Data Packaging All PR resistors are supplied tape packed ready for loading on to automatic sequencing and insertion machines. Component wires will not protrude beyond the outside edge of the tapes. Alternative packaging available by request. Lead formed resistors can also be supplied. Standard options of Lancet, Radial and Goalpost forming are available. f1 f2 Body location f1 – f2 ≤ 1.4 mm PR_C.qxd 1/5/03 8:58 am Page 2 Ordering Procedure Example: PR4 with TCR of 15ppm/ °C at 10 kilohms and 0.1% tolerance in an ammo pack box of 5000 pieces - P R 4 Y – 1 0 K B I Type TCR Y 15 ppm/ 25 ppm/ 50 ppm/ Value (use IEC62 code) Tolerance (use IEC62 code) B 0.1% D 0.5% C 0.25% F 1% Packing I Ammo PR4 5000/box StandardPR5 2500/box C 06.18 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