Resistors Radial Ceramic Ceramic Case Case Resistors Resistors Wirewound // Metal Wirewound Metal Oxide Radial Ceramic CaseOxide Resistors Wirewound / Metal Oxide Make Possible SQM SQM Series Series 2 10 SQM / CVF CVW Series 2 to to 10 /watts watts Resistance 0R1 to 200K Resistance 2 to 10 watts 0R1 to 200K High overload capability High overload capability Resistance 0R1 to 200K Flameproof case Flameproof case High overload capability Small PCB footprint Small PCB footprint Flameproof case RoHS compliant Small PCB footprint RoHS compliant RoHS compliant All parts are Pb-free and comply with EU Directive 2011/65/EU (RoHS2) Electrical Electrical Data Data watts watts ohms ohms / /CV-2 CV-2 Resistance ohms Resistance range range -- oxide oxide(CVF) (CVF) ohms Limiting volts Limiting element element voltage voltage voltsdc dcororac acrms rms Power Power rating rating at at 70C 70C Resistance range Resistance range -- wirewound wirewound(CVW) (CVW) Thermal Thermal impedance impedance Isolation voltage Isolation voltage C C/watt /watt volts volts TCR TCR Resistance Resistance Tolerance Tolerance SQM2 / CV-7 / CV-10 SQM2/ CV-2 / CV-2 SQM3 SQM3/ CV-3 / CV-3 SQM5 SQM5/ CV-5 / CV-5 SQM7 SQM7 / CV-7SQM10 SQM10 / CV-10 22 33 55 7 7 10 10 0R1 0R1 0R1 - 47R 0R1 - 680R - 910R 0R1- -27R 27R 0R1- 39R - 39R 0R1 - 47R 0R1 - 680R 0R1 0R1 - 910R 30R - 33K 43R - 56K 51R - 100K 750R 200K 1K0 - 200K 30R - 33K 43R - 56K 51R - 100K 750R - 200K 1K0 - 200K 150 300 350 500 750 150 300 350 500 750 50 50 4545 ppm/C ppm/C %% Standard Standard Values Values Ambient Ambient temperature temperature range range 3030 1000 1000 2828 23 23 <20R: 400, 350 <20R: 400,20R: 20R: 350 5 5 10 10 E24 E24 -55 to +155C -55 to +155C C C Physical Physical Data Data (all (alldimensions dimensionsininmm, mm,weights weightsining)g) LL BB W DD W 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 SQM2 / CV-2 20 4.5 SQM2 / CV-2 20 11.5 11.5 7.5 7.5 4.5 SQM3 25 CV-3 4.5 SQM3 // CV-3 25 12.5 12.5 8.5 8.5 4.5 SQM5 25 12.5 99 / CV-5 5.0 SQM5 / CV-5 25 12.5 5.0 Type Type SQM7 SQM7 // CV-7 CV-7 SQM10 / SQM10 / CV-10 CV-10 38 38 50 50 12.5 12.5 12.5 12.5 99 99 PP d d Weight EE FF Weight 1.0 0.05 1.0 1.0 1.0 1.0 Nom. 1.0 0.05 Nom. 3.0 55 0.7 4.3 3.0 3.0 3.0 0.7 4.3 4.0 4.0 5 0.7 5.6 4.0 4.0 5 0.7 5.6 55 0.8 6.3 3.5 0.8 6.3 3.5 3.5 3.5 5.0 5.0 2.75 2.75 5.0 5.0 4.25 2.75 5.0 4.25 2.75 5.0 55 55 0.8 0.8 0.8 0.8 10.7 10.7 13.4 13.4 BB d d F F P P WW DD L L 5151 E E Marked side Marked side Construction Construction A deposited metal oxide filmfilm A high high purity purity ceramic ceramic rod, rod, with withforce forcefitfitend endcaps capsonto ontowhich whichisiswound wounda awire wireelement: element:orora a deposited metal oxide (depending on value). The element is fitted into a ceramic case with fireproof insulation cement. (depending on value). The element is fitted into a ceramic case with fireproof insulation cement. General General Note Note Welwyn Components reserves the right to make changes in product specification without notice or liability. General Note Welwyn Components reserves the right to make changes in product specification without notice or liability. AllElectronics information is subject to Welwyn's datainand is considered accurate at time ofor going to print. TT reserves the right to makeown changes product specification without liability. All information is subject to Welwyn's own data and is considered accurate atnotice time of going to print. All information is subject to TT Electronics' own data and is considered accurate at time of going to print. (c) (c) Welwyn Welwyn Components ComponentsLimited Limited Bedlington BedlingtonNorthumberland NorthumberlandNE22 NE227AA, 7AA,UK UK Telephone: www.welwyn-tt.com Telephone: +44 +44 (0) (0) 1670 1670822181 822181 Facsimile: Facsimile:+44 +44(0) (0)1670 1670829465 829465Email: Email:info@welwyn-tt.com info@welwyn-tt.comWebsite: Website: www.welwyn-tt.com (c) TT Electronics plc A subsidiary of A subsidiary TT electronics plc of TT electronics plc www.ttelectronicsresistors.com 05 . 08 05 . 08 09.14 Radial Ceramic Case Resistors Radial Ceramic Case Resistors Wirewound / Metal Oxide Wirewound / Metal Oxide Make Possible SQM Series SQM / CVF / CVW Series 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 SQM2, 3 SQM5 SQM7, 10 3000 / box 2000 / box 1000 / box Standard General Note 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.ttelectronicsresistors.com (c) TT Electronics plc 09.14 Radial Ceramic Case Resistors Wirewound / Metal Oxide Make Possible 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 2 J B 3 3 1 2 4 1 2 Type Value Tolerance Packing & Termination Finish SQM2, SQM3, SQM5, SQM7 SQM10, E24 = 3/4 characters R = ohms K = kilohms J = 5% Pb-free only K = 10% B3 SQM2, SQM3 3000/box B2 SQM5 2000/box B1 SQM7, SQM10 1000/box 3 4 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 1000/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. www.ttelectronicsresistors.com (c) TT Electronics plc 09.14