WA83-470RJI WELWYN | Alldatasheet
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Can replace carbon comp. in many applications Resistance values down to 0.01 ohms Ideal for pulse handling applications General Purpose Cement Coated Wirewound Resistors WA80 Series Dimensions (mm) and Weight (g) PCB Min mounting bend Wt (Note 1) (Note 2) Note 1: 5.4 for values 0R1 Note 2: 7.2 for values 0R1 General Purpose Cement Coated Wirewound Resistors WA80 Series Cost effective Flameproof protection Can replace carbon comp. in many applications Resistance values down to 0.01 ohms Ideal for pulse handling applications 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 WA82 WA83 WA835 WA84 WA85 Power rating at 25°c watts 1 2.0 2.5 3.0 5 Resistance range ohms 0R068 to 430 0R05 to 900R 0R05 to 900R 0R01 to 2K2 0R015 to 6K8 Limiting element voltage volts 50 50 75 100 150 Isolation voltage volts 250 250 250 350 500 1<C°/mppRCT Ω 1>053: Ω:200 01 ,5 :R02<%ecnarelot ecnatsiseR ≥20R: 1, 2, 5, 10 Values E24 preferred Thermal impedance °C/watt 140 110 90 82 54 551 ot 55 -C°egnar erutarepmet tneibmA Electrical Data Physical Data 07.11 A subsidiary of TT electronics plc Welwyn Components LD f d Construction A high quality ceramic substrate is assembled with interference fit end caps to which are welded the termination wires. The resistive element is wound on the substrate and welded to the caps. Cement protection is applied to the resistor body before marking with indelible ink. Terminations Material Hot tin dipped copper wire Strength The terminations meet requirements of IEC 68.2.21. Solderability The terminations meet the requirements of IEC 115-1, Clause 4.17.3.2. ≥ ≥ Make Possible Resistors All Pb-free parts comply with EU Directive 2011/65/EU (RoHS2) 07.14 General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. © TT Electronics plc www.ttelectronicsresistors.com
Coated Wirewound Resistors WA80 Series b f1 f2 c Body Location f1 – f2 ≤ 1.4 mm Marking WA85 resistors are legend marked with type reference, resistance value and tolerance. In conformance with IEC 62. WA82, 83, 835 and 84 resistors 0R1 and above are colour coded with 4 bands in conformance with IEC 62. Values below 0R1 are 3 band marked, two digits and tolerance, there is no multiplier band. General Purpose Cement Coated Wirewound Resistors WA80 Series © 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 07.11 Welwyn Components lacipyTmumixaM Load at rated power: 1000 hrs at 25 or 70°c ∆R% 5.0 + .001Ω 3.0 Dry heat: 1000 hrs at 200°c ∆R% 5.0 + .001Ω 3.0 evruc gnitared eeSc°52 ta rewop detar morf gnitareD Short term overload ∆R% 5.0 + .001Ω 1.0 Climatic ∆R% 5.0 + .001Ω 2.0 Climatic category ∆R% 55/200/56Ω Long term damp Heat: 56 days ∆R% 5.0 + .001Ω 1.0 Robustness & Solder Heat ∆R% 5.0 + .001Ω 1.0 Pulse Handling Data available by request Solvent Resistance The body protection and marking are resistant to all normal industrial cleaning fluids suitable for printed circuits. Flammability The resistor coating will not burn under any condition of applied temperature or component overload. Performance Data Application Notes Care must be taken when determining clearance between the resistor body and the P.C.B. or other components. Resistance is measured 6mm from body. Packaging All resistors are supplied tape packed ready for loading onto automatic sequencing and insertion machines. The critical dimensions are shown in figure 2. Component wires will not protrude beyond the outside edge of the tapes. All taped resistors will be supplied either on reels or in ammopacks, depending upon quantities orderded. WA series resistors can be supplied preformed. Contact factory for details. Figure 2 Type WA82 WA83 WA835 WA84 WA85 b 52 52 52 67 63 c 5 5 5 10 10 Make Possible 07.14 General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. © TT Electronics plc www.ttelectronicsresistors.com
Coated Wirewound Resistors WA80 Series General Purpose Cement Coated Wirewound Resistors WA80 Series © 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 07.11 Welwyn Components Ordering Procedure Example: WA83 at 470 ohms and 5% tolerance in ammo pack box of 2500 pieces - W A 8 3 – 4 7 0 R J I Type Value (use IEC62 code) Tolerance (use IEC62 code) F 1% J 5% G 2% K 10% Packing I WA82 5000/box Standard WA83 2500/box WA835 1500/box WA84 1000/box WA85 750/reel Ammo Tape Make Possible 07.14 General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. © TT Electronics plc www.ttelectronicsresistors.com