4530资料

High Voltage Planar Dividers4530 SeriesWelwyn 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 systemsElectrical Data4531*Power rating at 70°CResistance rangeLimiting element voltageTCR (20°C to 70°C)Resistance toleranceResistance ratio tolerancesStandard valuesAmbient temperature range°Cwattsohmsvoltsppm/°C%%1.06.5K4532*1.76.5K4533*2.010K4534*3.010K100+1, 2, 51, 2, 5Any value to order-55 to 12535*2.815K4536*3.615K4537*4.515K20K to 130M36K to 250M36K to 250M62K to 450M51K to 370M82K to 660M180K to 1.4G+TCR tracking 50, 100 ppm/°C*5th or 6th digit determines protection and lead type (see marking)Physical DataDimensions (mm) of Uncoated Resistors*SubstrateType453145324533453445353537L max25.725.738.738.751.251.251.2H max91391391325.7T max2222222V nom5.15.15.15.17.627.627.62P nom20.320.333.033.045.745.745.7nominal25 x 8.525 x 12.538 x 8.538 x 12.550 x 8.550 x 12.550 x 25x0.05*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 TTelectronics plcIssue B · 03.02

© Welwyn Components Limited· Bedlington, Northumberland NE22 7AA, UK

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High Voltage Planar Dividers

4530 Series

ConstructionA high quality alumina substrate is printed with a speciallyselected high voltage resistor ink based on a rutheniumoxide/glass system. A choice of protective systems is available.Welwyn Components

MarkingLegend marked with type reference, resistance value,tolerance ratio and manufacturing date code.5th digit:6th digit:1 refers to leadframe2 refers to copper wire lead2 refers to conformal coating3 refers to screen printed protection4 refers to unprotected componentsChoice of ProtectionAs standard components are supplied conformally coatedwith an epoxy resin. By special request components can besupplied unprotected or with a screen printed epoxy‘handling’ protection.Solvent ResistanceTerminationsMaterialSolder-coated phosphor bronze lead-frame or0.8mm dia, copper wire leads.The marking and protection will withstand all commonly usedindustrial cleaning solvents.SolderabilityMeets the requirements of IEC 115-1, Clause4.17.3.2.Performance DataMaximumLoad: 1000 hours at 70°CDerating from rated power at 70°CShelf life: 12 months at room temperatureTemperature rapid changeResistance to solder heatVoltage coefficient of resistance ppm/volt∆R%∆R%∆R%4531, 45324533, 45344535, 4536, 45370.30.10.05531.5∆R%5Zero at 125°C< 0.10.020.02< 3< 2< 1Typical0.3Application NotesThe terminations should not be bent closer than 1.5mm fromthe body, and the recommended minimum bend radius is 1mm.Due to the high voltage which can appear between the resistorbody and any adjacent metal part, resistors should be mountedat an adequate distance from other conducting parts.Non Standard Optional FeaturesThe options listed below are some of the special featureswhich may be provided, subject to agreement.Special substrate size.Leadless version with palladium silver solder pads.Special termination length, diameter and pitch.Special designs for pulse applications.Resistance value outside stated range.Multiple dividers R1, R2, R3 etc.Temperature CategoryLower temperature category is -55°C, upper temperaturecategory is 125°C. Due to the possibility of surfacecondensation it is recommended that high voltage is notapplied to resistors in conditions of high humidity.PackagingPacked in foam within a box.Design FlexibilityThe experience of Welwyn engineers has been used to designthis generation of high voltage planar resistors to be suitablefor a majority of applications. However, should an applicationrequire particular consideration, Welwyn designers areavailable to provide advice and where applicable, torecommend a non-standard product. Special sizes, designsetc, can be prototyped at short notice.© Welwyn Components LimitedBedlington, Northumberland NE22 7AA, UK

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Issue B · 03.02