High Voltage High Voltage Voltage Chip Resistors Chip Resistors Resistors Welwyn Components Welwyn Components HVC Series HVC Series HVC Series voltages to 3kV s Continuous Continuous voltages up toup 3kV voltages up to 3kV s Continuous Overload voltages up toup 4kV voltages to 4kV s Overload voltages up to 4kV s Overload Values up toup 1G0 to 100M s Values up to s Values Tolerances to100M 0.5% s Tolerances to 0.5% TCR to 50ppm/C to 0.5% s Tolerances Robust thick film construction s Robust thick thick film film construction construction s Robust Anti-sulphur version available * * * * * * * Electrical Data Electrical Data 1206 Watts1206 0.3 Watts Volts 0.3 1000 Volts Volts1000 1500 Power rating @70C Power rLaim tinitgin@ C ent voltage g 7e0lem LimitingOevleerm loeandt vvoollttaaggee (2s) Overload voltage (2s) Resistance range Resistance range Volts Ohms Resistance tolerance Resistance tolerance TCR TCR Ambient temperature range AmbienValues t temperature range % % ppm/C ppm/C C C/W C/W Value Ranges (Ohms) Value Ranges (Ohms) Size 0.5 - 0.5 - 10K to 2M 10K to 2M 10K to 10M 10K to 10M 2512 2512 0.5 1 200 Notes Notes 0.5 2000 1 3000 DC or AC peak 2000 3000 3000 4000 DC or AC peak 3000 4000 Consult factory for 10K to 1G0 Consultout factory for values of range 10K to 1G0 out of range values See table of 0.5,1,2,5,10 See table of ranges value 0.5,1,2,5,10 value ranges 50, 100 50, 100 -55 to +155 -55E24 to +&15E96 5 preferred C Values Thermal Impedance Thermal Impedance TCR (ppm/C) Size TCR (ppm/C) 50 1206 50 100 1206 100 50 2010 & 2512 50 100 2010 & 2512 100 1500 Ohms 2010 2010 2E24 00 & E96 preferred 80 80 Any value to order 70 Any value to order 70 Tolerance (%) Tolerance (%) 1&2 1&2 10K to 10M 10K to 10M 5 & 10 5 & 10 10K to 100M 10K to 100M 10K to 1G0 10K to 1G0 10K to 100M 10K to 100M 10K to 1G0 10K to 1G0 10K to 100M 10K to 100M Physical Data Physical Data Dimensions (mm) & Weight (g) Dimensions (mm) & Weight (g) W L T A B C Wt. W T A B C Wt. 3.20.2 1.60.2 0.60.1 0.350.2 1.95 min 0.350.2 0.010 1206 3.20.2 1.60.2 0.60.1 0.350.2 1.95 min 0.350.2 0.010 1206 C L 2010 5.10.2 2.50.2 0.70.1 0.450.2 3.70 min 0.40.25 0.035 5.10.2 2.50.2 0.70.1 0.450.2 3.70 min 0.40.25 0.035 2512 6.50.2 3.20.2 0.70.1 0.450.2 5.00 min 0.40.2 0.055 6.50.2 3.20.2 0.70.1 0.450.2 5.00 min 0.40.2 0.055 2010 2512 General Note Welwyn General Note General NoteComponents reserves the right to make changes in product specification without notice or liability. All information is subject to Welwyn's data and is considered accurate at time of going to print. Welwyn Components reserves right to makeown changes inspecification product specification without TT electronics reserves the right the to make changes in product without notice or notice liability.or liability. All information information isis subject subjectto toTT Welwyn's ownown datadata and and is considered accurate at time of going to print. All electronics' is considered accurate at time of going to print. (c) Welwyn Components Limited * Bedlington, Northumberland NE22 7AA, UK 84 C T T A A B L W A W A Wrap-around terminations (3 faces) Wrap-around terminations (3 faces) B L A subsidiary of TT electronics plc A subsidiary of www.bitechnologies.com www.irctt.com www.welwyn-tt.com TT electronics plc 01.11 Telephone: +44 (0) 1670Limited 822181 * *Facsimile: +44Northumberland (0) 1670 829465 * Email: * Website: www.welwyn-tt.com (c) Welwyn Components Bedlington, NE22 7AA,info@welwyn-tt.com UK (c) TT electronics plc822181 * Facsimile: +44 (0) 1670 829465 * Email: info@welwyn-tt.com * Website: www.welwyn-tt.com 01.11 Telephone: +44 (0) 1670 84 05.13 High HighVoltage Voltage Chip ChipResistors Resistors Welwyn Components HVC Series HVC Series Construction Solderability Resistive thick film material, overglaze and organic protection are screen printed on a 96% alumina substrate. The design and laser adjustment of the resistive element optimises the limiting element voltage of the resistor. The terminations have an electroplated nickel barrier and tin finish. This ensures excellent `leach' resistance properties and solderability. Marking Terminations The body protection is resistant to all normal cleaning solvents suitable for printed circuits. The chips are not marked and the relevant information on type, value, tolerance date code and quantity are recorded on the reel. The chips are supplied with wrap-around terminations suitable for soldering. Consult factory for alternative termination options. Performance Data Load at rated power: Shelf life test: R% 1000 hours rated load @ 70C Maximum Typical 1206: 2 1206: 1 2010/2512: 1 2010/2512: 0.25 R% 12 months at room temperature 0.1 0.02 Derating from rated power at 70C Short term overload: Lightning strike: Zero at 155C Lesser of 6.25 x rated power or Maximum overload voltage 1.2/50s & 10/700s - see graph for peak voltage R% 2 0.2 R% 0.5 0.2 R% 0.5 0.1 Long term damp heat R% 1 0.25 Temperature rapid change R% 0.25 0.05 Resistance to solder heat R% Dry heat: 1000 hours at 155C Resistance to sulphur-bearing gas (AS version only): ASTM-B-809 Voltage proof Volts 0.25 0.05 0.25 0.05 500 1206: -25 Voltage coefficient of resistance 2010: -5 2512 100M: -1.5 2512 >100M: -8 Lightning Strike Performance 8 3500 Peak Voltage (kV) 3000 Voltage (V) 2010: -15 2512 100M: -5 2512 >100M: -15 ppm/V Maximum Continuous Voltage 2500 2000 1500 1000 6 4 2 0 0.01 500 0 0.01 1206: -15 0.1 1 10 100 1000 Resistance Value (M) 0.1 1 10 100 1000 1206-1.2/50s 2010-1.2/50s 2512-1.2/50s Resistance Value (M) HVC1206 HVC2010 HVC2512 Commodity Chip 1206-10/700s 2010-10/700s 2512-10/700s Note: maximum peak voltage tested was 6kV; performance beyond this is estimated. 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.bitechnologies.com www.irctt.com www.welwyn-tt.com (c) Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 (c) TT electronics plc822181 * Facsimile: +44 (0) 1670 829465 * Email: info@welwyn-tt.com * Website: www.welwyn-tt.com 07.11 05.13 85 High HighVoltage Voltage Chip Resistors Chip Resistors HVC Series Welwyn Components HVC Series Application Notes temperature of 155C (see performance above). For soldered resistors, the joint temperature should not exceed 110C. This condition is met when the stated power levels at 70C are used. HVC resistors are ideally suited for handling by automatic methods due to their rectangular shape and the small dimensional tolerances. Electrical connection to a ceramic substrate or to a printed circuit board can be made by reflow or wave soldering of wrap-around terminations. The PCB layout should avoid tracks running between the HVC mounting pads, as this would compromise the LEV. Wrap-around terminations provide good leach properties and ensure reliable contact. Due to the robust construction, the HVC can be immersed in the solder bath for 30 seconds at 260C. This enables the resistor to be mounted on one side of a printed circuit board and wire-leaded components applied on the other side. The LEV stated applies to operation at sea-level pressure, in a non-condensing atmosphere and non-contaminating environment. Voltage derating should be applied if low pressure, high humidity or contamination may be encountered. The termination clearance dimension (B) should be used in conjunction with the creepage limit applicable to the circuit application in order to determine the derated LEV. HVC resistors themselves can operate at a maximum Packaging HVC Resistors are supplied taped and reeled as per IEC 286-3. T2 P0 D0 T 33 1.0 P2 Wr E Marking (Both sides) W G B0 80 2 178 2 F 13 0.5 T1 0.8 0.15 2.5 0.5 A0 D1 K0 P1 Tape and reel dimensions (mm) Qty. Wr W P1 P0 P2 D0 D1 E F A0 B0 K0 T T1 T2 per 0.5 0.3 0.1 0.1 0.05 0.1 0.2 0.1 0.05 0.1 0.1 0.1 0.05 Nom. 0.15 reel 3000 1206 9 8 4 4 2 1.5 1 1.75 3.5 1.95 3.55 1.0 0.2 0.05 1.3 2010 13 12 8 4 2 1.5 1.5 1.75 5.5 2.79 5.89 0.91 0.28 0.06 1.21 3000 2512 13 12 8 4 2 1.5 1.5 1.75 5.5 3.61 6.96 1.17 0.28 0.06 1.45 1800 Ordering Procedure Example: HVC2512 at 4.7 megohms and 1% tolerance on a reel of 1800 pieces Type Packing Size T3 TCR C 100ppm/C 50ppm/C Termination AS Standard terminations Anti-sulphur terminations Value (use IEC62 code) Tape T18 1206 or 2010 3000/reel 2512 1800/reel Standard Tolerance (use IEC62 code) D 0.5% J 5% F 1% K 10% G 2% (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 General Note 86 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. 01.11 www.bitechnologies.com www.irctt.com www.welwyn-tt.com (c) TT electronics plc 05.13