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PR5 Datasheet(PDF) 1 Page - Welwyn Components Limited |
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PR5 Datasheet(HTML) 1 Page - Welwyn Components Limited |
1 / 2 page Precision Metal Film Resistors PR series • Low cost precision resistors • Tolerances down to ±0.1% • TCR down to 15ppm/°C Dimensions (mm) & Weight (g) PCB Min. mounting bend Type L Max D Max f min d nom centres radius Wt.nom PR4 6.2 2.5 21 0.6 10.2 0.6 0.3 PR5 9.0 3.6 19.6 0.8 12.7 1.2 0.5 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 – 240K 100R – 1M Limiting element voltage volts 250 350 TCR* ppm/°C 25 25 Resistance tolerance % 0.1, 0.25, 0.5, 1 0.1, 0.25, 0.5, 1 Standard values E192 E192 Thermal impedance °C/watt 140 112 Ambient temperature range °C -55 to 155 Electrical Data Physical Data Issue C · 04.03 A subsidiary of TT electronics plc Welwyn Components 182 L D f d *15ppm/°C available by request 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 Solder-coated 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 Resistors are colour coded with 5 bands. IEC 62 colours are used. Solvent Resistance The body protection and marking are resistant to all normal industrial cleaning solvents suitable for printed circuits. PR_C.qxd 1/5/03 8:58 am Page 1 |
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