Resistors Wirewound // Metal Oxide Wirewound Metal Oxide Radial Ceramic Case Resistors Wirewound / Metal Oxide SQM SQM Series Series 2 to 10 watts Resistance Resistance 0R1 0R1 to to 200K 200K 2 to 10 watts High High overload overload capability capability Resistance 0R1 to 200K Flameproof case High overload capability Small PCBcase footprint Flameproof RoHS compliant Small PCB footprint 2 to/ 10 watts SQM CVF / CVW Series RoHS compliant All parts are Pb-free and comply with EU Directive 2011/65/EU amended by (EU) 2015/863 (RoHS3) Electrical Data Electrical Data Power rating at 70C Resistance range - wirewound (CVW) Resistance range - oxide (CVF) Limiting element voltage Thermal impedance impedance Thermal Isolation voltage voltage Isolation TCR TCR Resistance Tolerance Tolerance Resistance Standard Values Standard Values Ambient temperature temperature range range Ambient watts ohms / CV-2 ohms volts dc or ac rms C/watt /watt C SQM2 / CV-2 2 SQM3 / CV-3 3 SQM5 / CV-5 5 SQM7 / CV-7 SQM10 / CV-10 7 10 0R1 - 27R 0R1 - 39R 0R1 - 47R 0R1 - 680R 0R1 - 910R 30R - 33K 150 43R - 56K 300 51R - 100K 350 750R - 200K 500 1K0 - 200K 750 50 50 45 45 30 30 28 28 23 23 volts volts ppm/C ppm/C % % SQM10A 10 0R1 - 560R 750 23 23 1000 1000 <20R: 400, 20R: 350 350 <20R: 400, 20R: 5 10 5 10 E24 E24 -55 to +155C -55 to +155C C C Physical (alldimensions dimensions mm, weights PhysicalData Data (all (all dimensions in in mm, weights in g) g)in g) Physical Data in mm, weights in Type Type SQM2 / CV-2 SQM2 / CV-2 SQM3 / CV-3 SQM3 / CV-3 SQM5 / CV-5 SQM5 / CV-5 SQM7 / CV-7 SQM7 / CV-7 SQM10 / CV-10 SQM10 / CV-10 SQM10A SQM10A LL 1.0 1.0 20 20 25 25 25 25 38 38 50 50 35 35 B E W D B E FF W D 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 4.5 3.0 3.0 11.5 7.5 4.5 3.0 3.0 11.5 7.5 4.5 4.0 4.0 12.5 8.5 4.5 4.0 4.0 12.5 8.5 12.5 9 5.0 3.5 3.5 12.5 9 5.0 3.5 3.5 12.5 9 5.0 2.75 5.0 12.5 9 5.0 2.75 5.0 12.5 9 4.25 2.75 5.0 12.5 9 4.25 2.75 5.0 16.0 12 6.0 4.25 4.25 16.0 12 6.0 4.25 4.25 P Weight P dd Weight Nom. 1.0 0.05 Nom. 1.0 0.05 5 0.7 4.3 5 0.7 4.3 5 0.7 5.6 5 0.7 5.6 5 0.75 6.3 5 0.75 6.3 5 10.7 0.75 5 10.7 0.75 5 13.4 0.75 5 13.4 0.75 7.5 13.8 0.75 7.5 13.8 0.75 B B d d F F P P W W D D L L 51 51 E E Marked side Marked side Construction Construction A high purity ceramic rod, with force fit end caps onto which is wound a wire element: or a deposited metal oxide film Construction A high purity ceramic rod, with force fit end caps onto which is wound a wire element: or a deposited metal oxide film (depending on value). The element is end fittedcaps into a ceramic case with fireproof insulation cement. A(depending high purity on ceramic rod, with force fit whichcase is wound a wire element: or acement. desposited metal oxide film value). The element is fitted into onto a ceramic with fireproof insulation (depending on value). The element is fitted into a ceramic case with fireproof insulation cement. General Note General Note 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. BI Technologies IRC Welwyn www.ttelectronics.com/resistors (c) TT Electronics plc 05.20 Radial RadialCeramic CeramicCase CaseResistors Resistors Wirewound Wirewound/ /Metal Metal Oxide Oxide SQM/ CVF Series/ CVW Series SQM Termination Details: Material Solderability Strength The 100% Sn finish copper lead wires are internally welded to the resistance element end caps. The terminations meet the requirements of IEC 115-1 Clause 4.17.3.2 The terminations meet the requirements of IEC 86.2.21 Marking: Type reference, resistance value and tolerance are legend marked onto the upper surface. Flammability: The resistor will not burn under any condition of applied temperature or overload. Solvent resistance: The body protection and marking are resistant to all normal industrial solvents suitable for printed circuits. Performance Data Maximum Load at rated power (1000hrs at 70C) <100K: 5% R 100K: 10% See Graph Derating from rated power at 70C short term overload (lesser of 6.25 x Pr or 2.5 x LEV for 5s) R 5% +0.05 Damp heat steady state (56 days, 40C, 90% RH) R 5% +0.05 Temperature rapid change (5 cycles -55C to +155C) R 2% +0.05 Resistance to solder heat R 1% +0.05 No evidence of flashover, mechanical damage, arcing or insulation breakdown Min. 95% coverage Voltage Proof (1kV for 60s) Solderability Derating Curve P/Pr 100% 60% 0% -55 70 155 275 T (C) Ordering Procedure Example: SQM3 at 1.2 kilohms and 5% tolerance bulk packed in a box of 3000 pieces - SQM3-1K2JB3 Type Value (use IEC62 code) Tolerance (use IEC62 code) J 5% Packing B3 B2 B1 Bulk General Note SQM2, 3 SQM5 SQM7, 10 3000 / box 2000 / box 1000 / box Standard BI Technologies IRC Welwyn TT Electronics reserves the right to make changes in product specification without notice or liability. (c) Welwyn Components Limited Bedlington Northumberland NE22 7AA, UK All information subject TT Electronics' own data and considered accurateEmail: at timeinfo@welwyn-tt.com of going to print. Telephone:is+44 (0) to 1670 822181 Facsimile: +44is(0) 1670 829465 Website: www.welwyn-tt.com 05 . 08 www.ttelectronics.com/resistors (c) TT Electronics plc 05.20 Radial Ceramic Case Resistors Wirewound / Metal Oxide SQM / CVF / CVW Series Ordering Procedure This product has two valid part numbers: European (Welwyn) Part Number: SQM3-1K2JB3 (SQM3, 1.2 kilohms 5%, Pb-free) S Q M 3 - 1 K 1 2 2 J B 3 1 2 Type Value SQM2, SQM3, SQM5, SQM7 SQM10, SQM10A E24 = 3/4 characters R = ohms K = kilohms 3 4 3 4 Tolerance Packing & Termination Finish J = 5% K = 10% Pb-free only B3 SQM2, SQM3 3000/box B2 SQM5 2000/box B1 SQM7, SQM10 1200/box B09 SQM10A 800/box USA (IRC) Part Number: CVF31201JLF (CVF3, 1.2 kilohms 5%, Pb-free) C V F 1 1 3 1 2 2 2 0 3 3 1 J L 4 F 5 4 5 Termination Type Size Value Tolerance Packing Finish 2 J = 5% LF = Pb-free 2, 3 3000/box 3 digits + multiplier 3 5 2000/box R = ohms for values K = 10% CVF, <100 ohms 5 7, 10 1200/box CVW 7 10 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. BI Technologies IRC Welwyn www.ttelectronics.com/resistors (c) TT Electronics plc 05.20