Ceramic Case Resistors Resisters - Wirewound / Metal Oxide Welwyn Components SQP Series * * * * 2 watts to 20 watts* Resistance 0R1 to 100K High overload capability RoHS compliant Electrical Data Power rating at 70 C watts Wirewound Resistance range SQP2 SQP3 SQP5 SQP7/7S SQP10 SQP15 SQP20 2 3 5 7 10 15 20 0R1-50R 0R1- 0R1- 0R1-100R 0R1- 0R1- 0R1- 100R 100R (7 & 7S) 200R 200R 500R Metal Oxide 51R- 100R- 110R- 110R-47K 220R- 220R- 510R- (Ohms) 47K 47K 47K (7 Only) 68K 68K 100K volts dc or ac rms 150 300 350 500 (7S-350) 750 1000 1000 C/watt 50 45 30 28 23 16 13 Limiting element voltage Thermal impedance Isolation voltage volts TCR 1000 ppm/ C Resistance Tolerance WW types, <0R68, 1700ppm; 0R68, 200ppm: MO types all values 350ppm % 5(J) Standard Values E24 preferred Ambient temperature range C -55 to +155 C * Other styles (radial/pluggable); sizes, and 30, 40, 50 W types are available to special order. Physical Data Dimensions (mm) and weight (g) Type L max. W max. H max. f min. d (0.1) Wt. nom. SQP2 19 8 8 23 0.70 2.2 SQP3 23 9 9 27 0.70 3.5 SQP5 23 11 10 27 0.75 5.0 SQP7 36 11 10 30 0.75 8.2 SQP7S 26 10 10 30 0.75 6.0 SQP10 50 11 11 30 0.75 11.0 SQP15 50 13.5 13.5 30 0.75 17.4 SQP20 61 15.5 14.5 30 0.75 25.0 d nom 0.05 H W f L f Min bend radius, all types 1.6 mm Packaging Our standard packaging for SQP Series is bulk pack 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. (c) 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 70 A subsidiary of TT electronics plc Issue C * 09.09 07.06 Ceramic Case Resisters Resistors - Wirewound / Metal Oxide Welwyn Components SQP Series 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 fitted into a ceramic case with fireproof insulation cement. Termination Details Material The tinned copper lead wires are internally welded to the resistance element end caps. Solderability The terminations meet the requirements of IEC 115-1 Clause 4.17.3.2 Strength The terminations meet the requirements of IEC 86.2.21 Performance Data Maximum Load at rated power (1000hrs at 70C) R% 5% +0.05 Derating from rated power at 70 C See Graph Short term overload * R% 2% +0.05 R% 2% +0.05 Temperature rapid change R% 2% +0.05 Resistance to solder heat R% Damp heat steady state (56 days, 40C, 90% RH) 1% +0.05 Pulse handling Data available by request *(Wirewound:: the lower of 5x rated power, or 2.5x LEV for 5 secs. Metal Oxide:: the lower of 6.25x rated power, or 2.5x LEV for 5 secs) P P 118% 100% 100% Metal Oxide types Wirewound types 50% 50% 0% -30 TC 25 70 155 240 TC 0% -30 70 155 240 Marking Type reference, resistance value and tolerance are legend marked onto the upper surface. Flammability The resistor will not burn or emit incandescent particles 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. Ordering Procedure Example: 5,000 SQP3 at 1.2 kilohms and 5% tolerance in standard bulk pack optionModel SQP3 - 1K2 J B5 B10 CODE Family Value (use IEC62 code) Tolerance (use IEC62 code) J 5% Packing B5 B15 SQP2,3,5 Bulk Pack B1 (c) 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 Qty/ Carton 5000 SQP7,10 1500 SQP15,20 1000 Issue C * 09.09 07.06 71