W30 TTELEC | Alldatasheet
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Tolerance to 1% Flameproof protection Custom built to meet pulse requirements Surface mount ZI-form option Cement Coated Wirewound Resistors W30 Series Values down to 10m ohms Tolerance to 1% Flameproof protection Custom built to meet pulse requirements Maximum Dimensions (mm) and Weight (g) W31 13 5.6 (note 1) 22.75 0.8 1.0 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 setoN13W 0.3sttawC°52 ta gnitar rewoP 5.2sttawC°07 ta gnitar rewoP K01 ot 10R0smho egnar ecnatsiseR woleb eeSC°/mpp)C°551 ot 55-( RCT <R10: 5 >=R10: 1, 2, 5 %ecnarelot ecnatsiseR redro laiceps ot seulav rehtOderreferp seires 42Eseulav dradnatS 38ttaw/C°ecnadepmi lamrehT 200 ot 55-C°egnar erutarepmet tneibmA 001stlovegatlov tnemele gnitimiL C°/mppRCT Electrical Data Physical Data Issue D · 07.06 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 element winding and termination wires. The protection is then applied Note 1: 5.8 for values 0R1 to the body, providing an effective seal which is impervious to moisture, shock, vibration, fungus and salt spray. Terminations Material Solder coated copper. Strength The terminations meet the requirements of IEC 68.2.21. Solderability The terminations meet the requirements of IEC 115-1, Clause 4.17.3.2. Marking W31 resistors are legend marked with type reference, resistance value and tolerance. Values are marked in accordance with IEC 62. Solvent Resistance The body and marking are resistant to all normal industrial cleaning solvents suitable for printed circuits. Flammability The resistor coating will not burn under any condition of applied temperature or component overload. R01: ±1000 >R01 - ≤R033: ±500 >R091 - ≤10R: ±150 >10R: ±100 All Pb-free parts comply with EU Directive 2011/65/EU amended by (EU) 2015/863 (RoHS3)All Pb-free parts comply with EU Directive 2011/65/EU amended by (EU) 2015/863 (RoHS3) 10.24 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.ttelectronics.com/resistors BI Technologies IRC Welwyn
Cement Coated Wirewound Resistors W30 Series f1 f2 f1 – f2 ≤ 1.4 mm Cement Coated Wirewound Resistors W30 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 100 Issue D · 07.06 Welwyn Components lacipyTmumixaM Load: 1000 hrs 3 watts @ 25°C ∆R% 5.0 + .001Ω 3.5 1000 hrs 2.5 watts @ 70°C ∆R% 5.0 + .001Ω 3.5 Dry heat: 1000 hrs at 200°C ∆R% 5.0 + .001Ω 3.5 evruc gnitared eeserutarepmet moor morf gnitareD Short term overload 10 x rated power for 5 seconds ∆R% 5.0 + .001Ω 1.0 Climatic ∆R% 5.0 + .001Ω 3.5 Climatic category 55/200/56 Long term damp heat: 56 days ∆R% 3.0 + .001Ω 1.0 Temperature rapid change ∆R% 2.0 + .001Ω 1.5 Resistance to solder heat ∆R% 5.0 + .001Ω 2.0 Vibration and bump ∆R% 5.0 + .001Ω 2.0 nim 005stlov foorp egatloV Pulse handling Data available by request Performance Data 20 40 60 80 100 120 140 160 180 200 220 240 260 280 130 120 110 100 Temp W31 Series Derating Curve % of Rated Power at 70 Application Notes The terminations should not be bent closer than 1.6mm from the body, and the recommended minimum bend radius is 1.2mm. 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 The standard method of packaging is taped in ammo packs. Can be provided on reels by request. Ordering Procedure Example: W31 at 1 kilohms and 1% tolerance packed in a box of 1000 pieces W 3 1 – 1 K 0 F A 1 Type Value (use IEC62 code) Tolerance (use IEC62 code) F 1% G 2% J 5% Packing A1 Ammo 1000/box Standard T1 Tape 1000/reel W31 can be supplied with hairpin, goalpost or lancet pre-formed leads - see https://www.ttelectronics.com/TTElectronics/media/ProductFiles/Application-Note/TN008-Resistors-Leadform-Capability.pdf f1 f2 f1 – f2 ≤ 1.4 mm Cement Coated Wirewound Resistors W30 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 100 Issue D · 07.06 Welwyn Components lacipyTmumixaM Load: 1000 hrs 3 watts @ 25°C ∆R% 5.0 + .001Ω 3.5 1000 hrs 2.5 watts @ 70°C ∆R% 5.0 + .001Ω 3.5 Dry heat: 1000 hrs at 200°C ∆R% 5.0 + .001Ω 3.5 evruc gnitared eeserutarepmet moor morf gnitareD Short term overload 10 x rated power for 5 seconds ∆R% 5.0 + .001Ω 1.0 Climatic ∆R% 5.0 + .001Ω 3.5 Climatic category 55/200/56 Long term damp heat: 56 days ∆R% 3.0 + .001Ω 1.0 Temperature rapid change ∆R% 2.0 + .001Ω 1.5 Resistance to solder heat ∆R% 5.0 + .001Ω 2.0 Vibration and bump ∆R% 5.0 + .001Ω 2.0 nim 005stlov foorp egatloV Pulse handling Data available by request Performance Data 20 40 60 80 100 120 140 160 180 200 220 240 260 280 130 120 110 100 Temp W31 Series Derating Curve % of Rated Power at 70 Application Notes The terminations should not be bent closer than 1.6mm from the body, and the recommended minimum bend radius is 1.2mm. 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 The standard method of packaging is taped in ammo packs. Can be provided on reels by request. Ordering Procedure Example: W31 at 1 kilohms and 1% tolerance packed in a box of 1000 pieces W 3 1 – 1 K 0 F A 1 Type Value (use IEC62 code) Tolerance (use IEC62 code) F 1% G 2% J 5% Packing A1 Ammo 1000/box Standard T1 Tape 1000/reel Ordering Procedure Example: W31-1K0FA1 (W31, 1 kilohm ±1%, Pb-free) W 3 1 - 1 K 0 F A 1 1 2 3 4 1 2 3 4 Type Value Tolerance Packing W31 E24 = 3/4 characters F = ±1% A1 Ammo 1000/box Standard R = ohms G = ±2% T1 Tape 1000/reel K = kilohms J = ±5% 10.24 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.ttelectronics.com/resistors BI Technologies IRC Welwyn W31 is also available in ZI-form SMD format packed in blister tape - see https://www.ttelectronics.com/TTElectronics/media/ProductFiles/Resistors/Datasheets/ZI-form.pdf