W20 TTELEC | Alldatasheet

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Suitable for harsh environments Impervious lead free vitreous enamel coating Overload characteristics ideal for protection circuits High stability and reliability High power dissipation for size Vitreous Enamelled Wirewound Resistors W20 Series

  • CECC approved
  • Suitable for harsh environments
  • Impervious lead free vitreous enamel coating
  • Overload characteristics ideal for protection circuits
  • High stability and reliability
  • High power dissipation for size Dimensions (mm) and Weight (g) Type L max D max f min d nom Wt.nom W21 12.7 5.6 22.75 0.8 1 W215 22.0 7.0 23.1 0.8 2 W22 22.0 8.0 23.1 0.8 2 W23 38.0 8.0 - 0.8 3.5 W24 53.5 8.0 - 0.8 5 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 This table indicates the CECC specification requirements, and these are met or exceeded by the corresponding W20 series products 42W32W22W512W12WlaicremmoC K001 ot R1K06 ot R1K22 ot R1K51 ot R1K01 ot R1smhoecnarelot %1ta egnar ecnatsiseR K001 ot R1K06 ot R1K22 ot 5R0K51 ot 5R0K01 ot 5R0smhoecnarelot %2 K001 ot 2R0K06 ot 51R0K22 ot 1R0K51 ot 1R0K01 ot 1R0smhoecnarelot %5 +< :yllacipyTC°m/pp)C°002 ot°55-( RCT -75 Maximum: +-200 BS CECC 40-201-002 Requirements Style JB HB KB LB MB K001 ot R1K65 ot R1K02 ot R1K51 ot R1K01 ot R1smhoecnarelot %1ta egnar ecnatsiseR K001 ot R1K65 ot R1K02 ot 5R0K51 ot 5R0K01 ot 5R0smhoecnarelot %2 K001 ot 2R0K65 ot 51R0K02 ot 1R0K51 ot 1R0K01 ot 1R0smhoecnarelot %5 C°/mpp)C°002 ot°55-( RCT ≥5 ohms < 10 ohms: ±400 ≥10 ohms: ±200 Applicable to commercial and approved ranges 057005002061001stlovegatlov tnemele gnitimiL redro laiceps ot seulav rehtO .derreferp 42Eseulav dradnatS 2292448588ttaw/C°ecnadepmi lamrehT 002 ot 55-C°egnar erutarepmet tneibmA Electrical Data Physical Data A subsidiary of TT electronics plc Welwyn Components LD f d Construction A high purity 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; the vitreous enamel protective coating is then applied. Terminations Material Copper clad steel wire, nickel plated and solder-coated. 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. Length W23’s and W24’s are not supplied on tape. Minimum lead length is 30 mm. Marking The resistors are legend marked with type reference, resistance value and tolerance. Values are marked in accordance with IEC 62. 0 5 10 15 20 W21 W215 W22 W24W23 400 300 200 100 Dissipation – Watts Temperature Rise °C t OM| \` Kè ñÇ==OULQLMP==NMWNV=~ã==m~ÖÉ=N Resistors 06.18 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 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)

© 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 Welwyn Components CECC 40201-002 Actual Performance Requirements Maximum Typical Load at commercial rating: 1000 hrs at 25°C 5.35%R Load at CECC rating: 1000 hours at 25°C R% 5 5 3.5 Dry heat: 1000 hours at 200°C R% 521 Shelf life: 12 months at room temperature R% not specified 0.03 0.02 Derating see derating curve Short term overload R% 1 1.0 0.2 Climatic R% 5 0.5 0.2 Climatic category R% 55/200/56 Long term damp heat R% 5 0.05 0.02 Temperature rapid change R% 1 0.5 0.2 Resistance to solder heat R% 1 0.25 0.03 Vibration and bump R% 1 0.25 0.05 orezorezdeificeps tonv/vµ)ycneuqerf fo edaced ni( esioN Robustness R% 1 0.4 0.05 mho G1>mho G1>deificeps tonsmhoecnatsiser noitalusnI nim 005nim 005deificeps tonstlovfoorP egatloV Pulse handling data available by request Performance Data Flammability All materials used in the construction of ‘W’ series resistors are inorganic and inherently non burning. b f1 f2 f1 – f2 1.4 mm Application Notes The termination should not be bent closer than 1.6mm from the body, and the recommended minimum bend radius is 1.2mm. The terminations are solderable to within 4mm from the body. When cold, vitreous enamel has excellent insulation resistance. In common with all insulants the specific resistance of the enamel decreases with increase in temperature. Therefore, resistors operated at near maximum temperature cannot be classed as insulated and should not be used in contact with any conducting material. Care must be taken when determining clearance distance between the resistor body and the printed circuit board or other components to ensure these are not over heated. Resistance is measured 6mm from body. 25 70 200 315 116 100 Ambient temperature ° C Derating Curve % of Rated Power Type b W21 63±2 W215 73±2 W22 73±2 Packaging For W21 and W215 the standard method of packaging is taped in Ammo Packs. For W22 the standard method of packaging is taped and reeled. W23’s and W24’s are available only as loose packed in boxes. Solvent Resistance The body protection and marking are resistant to all normal industrial cleaning solvents suitable for printed circuits. t OM| \` Kè ñÇ==OULQLMP==NMWNV=~ã==m~ÖÉ=O Solvent Resistance The body protection and marking are resistant to all normal industrial cleaning solvents suitable for printed circuits Flammability All materials used in the construction of W20 series resistors are inorganic and inherently non-burning. 06.18 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 data available at http://www.ttelectronics.com/themes/ttelectronics/datasheets/resistors/literature/Pulse-Overload_AN.pdf

© 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 W20_C.qxd 28/4/03 10:19 am Page 2 Ordering Procedure Example: W22 at 3.3 kilohms and 5% tolerance on a reel of 700 pieces – W 2 2 – 3 K 3 J I Type Value (use IEC62 code) Tolerance (use IEC62 code) F 1% J 5% G 2% Packing I Ammo W21, W215 1000/box StandardTape W22 700/reel Bulk W23, W24 50/box For CECC released product state on order the CECC number and style. Example: W22-3K3JI CECC40201-002 KB For SnPb finish instead of Pb-free replace the packing suffix with PB. Example: W22-3K3JPB Ordering Procedure This product has two valid part numbers: Example: W22-3K3JI (W22, 3.3 kilohms ±5%, Pb-free) W 2 2 - 3 K 3 J I 1 2 3 4 For CECC released product state on order the CECC number and style. Example: W22-3K3JI CECC40201-002 KB USA (IRC) Part Number: W22-3301JLF (W22, 3.3 kilohms ±5%, Pb-free) W 2 2 - 3 3 0 1 J L F 1 2 3 4 1 2 3 4 Type Value Tolerance Packing & Termination Finish W21 E24 = 3/4 characters F = ±1% I = Standard packing & Pb-free W215 R = ohms G = ±2% PB = Standard packing & SnPb W22 K = kilohms J = ±5% W21, W215 1000/box W23 W22 700/reel W24 W23, W24 50/box 1 2 3 4 Type Value Tolerance Packing & Termination Finish W21 3 digits + multiplier F = ±1% LF = Standard packing & Pb-free W215 R = ohms for values <100 ohms G = ±2% Omit for Standard packing & SnPb W22 J = ±5% W21, W215 1000/box W23 W22 700/reel W24 W23, W24 50/box Vitreous Enamelled Wirewound Resistors W20 Series 06.18 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