RC55P资料

Precision MetalFilm Resistors

RCP seriesWelwyn Components

•Precision resistors withuprated power•Low TCRs over a wide resistance range•Tolerance down to 0.05%•Low noise and negligible voltage coefficient•Express delivery availableElectrical DataRC55PPower rating at 70°CResistance rangeLimiting element voltageIsolation voltageTCR (20 to +70°C) & codesResistance tolerance (code)Standard valuesThermal impedanceAmbient temperature range°C/watt°C110wattsohmsvoltsvoltsppm/°C%0.51R to 4M350500RC65P1.01R to 4M500500RC70P1.51R to 10M500700See resistancerestrictionsAny value to order60Notes5(V), 10(T), 15(Y), 25(D), 50(C), &100(Z)0.05(W), 0.1(B), 0.25(C), 0.5(D), & 1(F)E24, E96 preferred70-55 to +155Physical DataDimensions (mm) andWeight (g)PCBmountingd nom.centres0.60.60.810.212.718.4MinBendRadius0.60.61.2Wt.nom.0.240.401.15TypeRC55PRC65PRC70PL Max7.210.015.5D Max2.53.75.5f min303030dDLfConstructionCeramic rods are coated with a metal film and plated steelcaps are force fitted. A helical cut is used to adjust the film toits final value.Termination wires are welded to the caps and the resistor isprotected with a specially formulated epoxy coating.MarkingType reference, TCR code, resistance value and tolerancecode. The resistance value marking conforms to IEC 62.Solvent ResistanceThe body protection and marking are resistant to all normalindustrial cleaning fluids suitable for printed circuits.TerminationsMaterialStrengthSolderabilitySolder-coated copper wire.The terminations meet the requirements ofIEC 68.2.21The terminations meet the requirements ofIEC 115-1, Clause 4.17.3.2General 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

Telephone: +44 (0)1670 822181 · Facsimile: +44 (0)1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com

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Precision MetalFilm Resistors

RCP series

Welwyn Components

Application NotesMatched Sets and NetworksWelwyn has many years experience in the supply of matchedsets of precision resistors.Resistors can be supplied matched for tolerance and TCRdown to ±0.02% and ±2ppm/°C, either as separate resistorsor pre-assembled and encapsulated within a plastic box.The individual resistors within a set or module can bemanufactured with a tolerance of ±0.05% and a TCR of±5ppm/°C.Performance DataRC55P Values 10 ≤100kActual PerformanceMaximumLoad at rated power : 1000 hrs at 70°CDry heat: 1000 hrs at 155°CShelf life : 12 months at room temperatureDerating from rated power at 70°CShort term overloadClimaticClimatic categoryLong term damp heatTemperature rapid changeResistance to solder heatVibration and bumpNoise (in a decade of frequency)Voltage coefficient of resistance∆R %∆R %∆R %∆R %µV/Vppm/V0.250.040.020.20.1∆R %∆R %0.50.2555/155/560.050.020.0030.0020.03<10.50.20.060.061.0∆R %∆R %∆R %0.100.30.015Zero at 155°C0.0050.05Typical0.030.10.003Other Values/Styles*Actual PerformanceMaximum0.51.00.1Zero at 155°C0.10.355/155/560.10.050.030.020.1<10.020.1Typical0.10.150.03*An 0.01 ahm addition to be added to the performance claims of all resistors <10R.Table of Resistance RestrictionsToleranceTCRppm/°C5101525501000.05%10R to 1M10R to 1M10R to 1M10R to 1M10R to 1MRC55P.1-.25%10R to 1M5R to 1M5R to 2M5R to 2M1R to 2M.5-1%1R to 5001R to 1M1R to 1M1R to 2M1R to 4M1R to 4M0.05%10R to 50010R to 1M10R to 1M10R to 1M10R to 1M10R to 1M10R to 500k10R to 500kRC65P.1-.25%10R to 50010R to 1M5R to 1M5R to 2M5R to 2M1R to 2M.5-1%1R to 5001R to 1M1R to 1M1R to 2M1R to 4M1R to 4M0.05%10R to 1M10R to 1M10R to 1M10R to 1M10R to 1MRC70P.1-.25%10R to 1M10R to 2M10R to 5M5R to 10M1R to 10M.5-1%1R to 750k10R to 1M1R to 2M1R to 5M1R to 10M1R to 10M10R to 750k10R to 750kPackagingThe standard method of packaging RC55P resistors is taped inammopacks. Taped resistors on reel or loose packedcomponents can also be supplied by special request. Thestandard packaging for RC65P and RC70P resistors is loose inboxes. By special request the R65P components can also besupplied taped on reel or in ammopack. In the case of tapepacked components the usable lead length is reduced by thewidth of the tape.Standard Quantities Per PackageTypeSmall boxLarge boxReelAmmo packRC55P250100050001000RC65P12550025001000RC70P25250© Welwyn Components LimitedBedlington, Northumberland NE22 7AA, UK

Telephone: +44 (0)1670 822181 · Facsimile: +44 (0)1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com

Issue B · 03.02

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