1260中文资料

Document Number: 63054For any questions, contact: foil@vishay.comwww.vishay.comRevision: 29-Feb-0811260Vishay Foil ResistorsBulk Metal® Foil Technology Precision Trimming Potentiometers, 3/8 Inch Square, RJ24 Style, Designed to Meet or Exceed the Requirements of MIL-PRF-39035, Char. HFEATURES•Temperature coefficient of resistance (TCR): ± 10 ppm/°C (- 55 °C to + 150 °C ref. at + 25 °C);throughthe wiper2); ± 25 ppm/°C (see table 2 for low values)•Load life stability: 0.1 % typical ΔR, 1.0 % maximum ΔRunder full rated power at + 85 °C for 10000 h•Settability: 0.05 % typical; 0.1 % maximum•Setting stability: 0.1 % typical; 0.5 % maximum•Power rating: 0.25 W at + 85 °C•Resistance range: 5 Ω to 10 kΩ•Resistance tolerance: ± 5 %, ± 10 %•“O” ring prevents ingress of fluids during any boardcleaning operation•Terminal finishes available:tin/leadNote:*See figure 1TABLE 1 - MODEL SELECTION*MODELTERMINATION STYLEAVERAGE WEIGHT (g)POWER RATING at + 85 °C AMBIENTNO. OF TURNS1260W-edge mount, top adjust0.40.25 W21 ± 2X-edge mount, side adjustTABLE 2 - 1260 (RJ26) SERIES ELECTRICAL SPECIFICATIONSTemperature Coefficient ofResistance (TCR) 50 Ω to 10 kΩEnd-to-end1)± 10 ppm/°C maximum(- 55 °C to + 150 °C,+ 25 °C ref.)Temperature Coefficient ofResistance 5, 10 and 20 ΩThrough the wiper2)± 20 ppm/°C± 25 ppm/°CStabilityLoad life at 10000 h0.1 % typical ΔR1.0 % maximum ΔR(under Full Rated Powerof 0.25 W at + 85 °C)Power Rating3)0.25 W at + 85 °CSettability0.05 % typical;0.1 % maximum

Setting Stability0.1 % typical;0.5 % maximumContact ResistanceVariation - CRV (noise)3 Ω typical; 10 Ω maximumHop-off0.25 % typical;1.0 % maximumHigh-Frequency OperationRise/decay timeInductanceCapacitance1 ns without ringing0.08 µH typical0.5 pF typicalOperating Temperature Range- 55 °C to + 150 °CTABLE 3 - VALUES VS. TOLERANCESSTANDARD RESISTANCE VALUES(in Ω)STANDARD TOLERANCE5, 10± 10 %20, 50, 100, 200, 500, 1K, 2K, 5K, 10K± 5 %TABLE 4 - MECHANICAL SPECIFICATIONSAdjustment Turns21 ± 2Mechanical StopsWiper idles - no discontinuityInternal TerminationsAll welded - no fluxCase MaterialDiallyl-phthalate: black (DAP)Shaft Torque3 oz. in. maximumBacklash0.005 % typical元器件交易网www.cecb2b.com1260Vishay Foil ResistorsBulk Metal® Foil Technology Precision Trimming Potentiometers, 3/8 Inch Square, RJ24 Style, Designed to Meet or Exceed the Requirements of MIL-PRF-39035, Char. H

www.vishay.comFor any questions, contact: foil@vishay.comDocument Number: 630542Revision: 29-Feb-08FIGURE 1 - SCHEMATIC AND DIMENSIONS in inches (millimeters)STANDARD MARKINGModel No.Date CodeResistance ValueToleranceNotes:Adjustment screw 0.090" (2.29 mm)diameter with 0.020" (0.51 mm) x0.031" (0.79 mm) slot. model 1260has solder plated copper terminalpins. 0.024" (0.61mm) diameter,0.300" (7.62 mm) length minimum.1260W0.024 ± 0.006" (0.61 ± 0.15 mm) diameter3 pins0.081 ± 0.010" (2.06 ± 0.25 mm)VISHAY213CW0.420" (10.67 mm) maximum0.080" (2.03 mm) maximum0.300" (7.62 mm) minimum0.015" (0.38 mm)minimum0.100 ± 0.005"(2.54 ± 0.13 mm)± 0.010" (± 0.25 mm)C0.187 ± 0.020"(4.75 ± 0.51 mm)0.090 ± 0.005"(2.29 ± 0.13 mm) diameter0.170 ± 0.025"(4.32 ± 0.64 mm)0.075 ± 0.010"(1.91 ± 0.25 mm)0.375 ± 0.015"(9.53 ± 0.38 mm)1260X0.024±0.006" (0.61 ±0.15 mm) diameter3 PINSVISHAY231CW0.080" (2.03 mm) maximum0.300" (7.62 mm) minimum0.015" (0.38 mm)0.187±0.020"(4.75±0.51 mm)0.100±0.005"(2.54±0.13 mm)±0.010" (±0.25 mm)C0.090±0.005"(2.29±0.13 mm) DIA0.170±0.025"(4.32±0.64 mm)0.075±0.010"(1.91±0.25 mm)0.375±0.015"(9.53±0.38 mm)0.081±0.010"(2.06±0.25 mm)0.420" (10.67 mm)maximumminimumFIGURE 2 - POWER DERATING CURVE- 75 - 50 - 25 0 + 25 + 50 + 75 + 100 + 125 + 150 + 175Ambient Temperature °C+ 85°C+ 100+ 75+ 50+ 250Percent of Rated Power元器件交易网www.cecb2b.com

Document Number: 63054For any questions, contact: foil@vishay.comwww.vishay.comRevision: 29-Feb-0831260Bulk Metal® Foil Technology Precision Trimming Potentiometers, 3/8 Inch Square, RJ24 Style, Designed to Meet or Exceed the Requirements of MIL-PRF-39035, Char. HVishay Foil Resistors

Notes:1.Maximum TCR applies to the 3 s (sigma) limit or 99.73 % of aproduction lot. (Measured end-to-end with wiper off the element.)2.Measurements of TCR through the wiper are influenced more bysetting stability and the percentage of the total resistance in use(at the wiper) than by fundamental resistance change due totemperature alone. The parameter shown in table 2 is a 2 sdistribution typifying the behavior of the device when used with40% or more of the total resistance in use.3.Derated linearly for full power at + 85 °C to zero (0) W at+150°C. See figure 2.4.All ΔR’s are measured to the tolerance specified + 0.01 Ω.5.Whichever is greater.Special available options:Special markingPower conditioning and screening operations.VISHAY TRIMMERS ARE INSPECTED100 % for:•Short-time overload(6.25 x rated power for 5 s on; and for 30 s off - 3 cycles)•Immersion•Resistance tolerance check•End resistance•Visual-mechanical•Dynamic tests for continuity, CRVBy sample for:•TCR•DWVTABLE 5 - COMPARISONMIL-PRF-39035/3 CHARACTERISTIC H4)1260 MAXIMUMTEST GROUP IConditioningContact resistance variation - CRV (noise)Immersion± 1.0 %± 3.0 % or 3 Ω5)No continuous stream of bubbles± 0.5 %3 Ω typical, 10 Ω maximumNo continuous stream of bubblesTEST GROUP IaVisual and mechanicalActual effective electrical travelEnd resistanceDielectric withstanding voltage - DWV(Atmospheric and barometric pressure)Insulation resistanceShaft torqueThermal shockSetting stabilityNo failures10 to 25 turns2 % or 2 Ω5)Per MIL-STD-202, methods 301 and 105≥ 1000 MΩ3 oz. in. maximum± 1.0 %± 1.0 %No failures21 ± 2 turns2 Ω for values ≤ 1 kΩ;5 Ω for values ≥ 2 kΩ;Per MIL-STD-202, methods 301 and 105> 1000 MΩ3 oz. in. maximum± 0.5 %± 0.5 %TEST GROUP IISolderabilityPer MIL-STD-202, method 208Per MIL-STD-202, method 208TEST GROUP IIIResistance temperature characteristic - TCRMoisture resistanceContact resistance variation - CRV (noise)± 0.005 % (± 50 ppm/°C)± 1.0 %3.0 % or 3 Ω5)± 0.001 % (± 10 ppm/°C)± 0.5 %3 Ω typical, 10 Ω maximumTEST GROUP IVSettabilityShockSetting stabilityVibrationSetting stabilityContact resistance variation - CRV (noise)Salt spray± 1.0 %± 1.0 %± 1.0 %± 1.0 %± 1.0 %3.0 % or 3 Ω5)No corrosion± 0.1 %± 0.5 %± 0.5 %± 0.5 %± 0.5 %3 Ω typical, 10 Ω maximumNo corrosionTEST GROUP VSolder heatLow-temperature operationSetting stabilityLow-temperature storageHigh-temperature exposureSetting stabilityContact resistance variation - CRV (noise)Integrity of shaft± 1.0 %± 1.0 %± 2.0 %± 1.0 %± 3.0 %± 2.0 %3.0 % or 3 Ω5)No loosening or breakage± 0.1 %± 0.5 %± 0.5 %± 0.5 %± 0.5 %± 0.5 %3 Ω typical, 10 Ω maximumNo loosening or breakageTEST GROUP VIRotational life (200 cycles)Contact resistance variation - CRV (noise)Terminal strength± 2.0 %3.0 % or 3 Ω5)2 lbs.± 2.0 %3 Ω typical, 10 Ω maximum2 lbs.TEST GROUP VIILife (2000 h) at + 85 °CLife (10000 h) at + 85 °C± 3.0 %± 5.0 %± 0.1 % typical, ± 1.0 % maximum± 0.1 % typical, ± 1.0 % maximumTEST GROUP VIIISolvent resistanceNo failuresNo failures元器件交易网www.cecb2b.com