4532

High Voltage Planar Dividers 4530 Series Welwyn Components • Dissipation up to 4.5 Watts at 70°C • Voltage up to 15 kV dc • TCR tracking down to 50 ppm/°C • Suitable for high voltage precision dividers, feedback circuits and measurement systems Electrical Data 4531* Power rating at 70°C Resistance range Limiting element voltage TCR (20°C to 70°C) Resistance tolerance Resistance ratio tolerances Standard values Ambient temperature range °C watts ohms volts ppm/°C % % 1.0 6.5K 4532* 1.7 6.5K 4533* 2.0 10K 4534* 3.0 10K 100+ 1, 2, 5 1, 2, 5 Any value to order -55 to 125 4535* 2.8 15K 4536* 3.6 15K 4537* 4.5 15K 20K to 130M 36K to 250M 36K to 250M 62K to 450M 51K to 370M 82K to 660M 180K to 1.4G +TCR tracking 50, 100 ppm/°C *5th or 6th digit determines protection and lead type (see marking) Physical Data Dimensions (mm) of Uncoated Resistors* Substrate Type 4531 4532 4533 4534 4535 4536 4537 L max 25.7 25.7 38.7 38.7 51.2 51.2 51.2 H max 9 13 9 13 9 13 25.7 T max 2 2 2 2 2 2 2 V nom 5.1 5.1 5.1 5.1 7.62 7.62 7.62 P nom 20.3 20.3 33.0 33.0 45.7 45.7 45.7 nominal 25 x 8.5 25 x 12.5 38 x 8.5 38 x 12.5 50 x 8.5 50 x 12.5 50 x 25 x0.05 *Conformally coated resistors: Add 1mm to dimensions L and H and 0.5mm to T. Coating can be extended up to 2mm down leads. Example: A conformally coated 4531 measures 26.7 x 10 x 2.5 max. 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. A subsidiary of TT electronics plc Issue B · 03.02 © 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 207 High Voltage Planar Dividers 4530 Series Construction A high quality alumina substrate is printed with a specially selected high voltage resistor ink based on a ruthenium oxide/glass system. A choice of protective systems is available. Welwyn Components Marking Legend marked with type reference, resistance value, tolerance ratio and manufacturing date code. 5th digit: 6th digit: 1 refers to leadframe 2 refers to copper wire lead 2 refers to conformal coating 3 refers to screen printed protection 4 refers to unprotected components Choice of Protection As standard components are supplied conformally coated with an epoxy resin. By special request components can be supplied unprotected or with a screen printed epoxy ‘handling’ protection. Solvent Resistance Terminations Material Solder-coated phosphor bronze lead-frame or 0.8mm dia, copper wire leads. The marking and protection will withstand all commonly used industrial cleaning solvents. Solderability Meets the requirements of IEC 115-1, Clause 4.17.3.2. Performance Data Maximum Load: 1000 hours at 70°C Derating from rated power at 70°C Shelf life: 12 months at room temperature Temperature rapid change Resistance to solder heat Voltage coefficient of resistance ppm/volt ∆R% ∆R% ∆R% 4531, 4532 4533, 4534 4535, 4536, 4537 0.3 0.1 0.05 5 3 1.5 ∆R% 5 Zero at 125°C < 0.1 0.02 0.02