High Voltage Welwyn Components Chip Resistors HVC Series Continuous voltages up to 3kV Overload voltages up to 4kV Values up to 100M Tolerances to 0.5% Robust thick lm construction Electrical Data 1206 2010 2512 Notes Power rating 70C Watts 0.3 0.5 1 Limiting element voltage Volts 1000 2000 3000 DC or AC peak Overload voltage (2s) Volts 1500 3000 4000 Consult factory for Resistance range Ohms 10K to 100M out of range values See table of Resistance tolerance % 0.5,1,2,5,10 value ranges TCR ppm/C 100 Ambient temperature range C -55 to +155 Values E24 & E96 preferred Any value to order Thermal Impedance C/W 200 80 70 Value Ranges (Ohms) Tolerance % Size 10 5 2 1 0.5 1206 10K to 100M 10K to 100M 10K to 10M 10K to 2M N/A 2010 10K to 100M 10K to 100M 10K to 10M 10K to 10M N/A 2512 10K to 100M 10K to 100M 10K to 10M 10K to 10M 10K to 10M Physical Data Dimensions (mm) & Weight (g) L W T A B C Wt. C 1206 3.20.2 1.60.2 0.60.1 0.350.2 1.95 min 0.350.2 0.010 T A B 2010 5.10.2 2.50.2 0.70.1 0.450.2 3.70 min 0.40.25 0.035 L W A Wrap-around terminations 2512 6.50.2 3.20.2 0.70.1 0.450.2 5.00 min 0.40.2 0.055 (3 faces) General Note Welwyn Components reserves the right to make changes in product speci cation without notice or liability. A subsidiary of All information is subject to Welwyns own data and is considered accurate at time of going to print. TT electronics plc 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 84High Voltage Chip Resistors Welwyn Components HVC Series Construction Solderability Resistive thick film material, overglaze and organic The terminations have an electroplated nickel barrier and tin protection are screen printed on a 96% alumina substrate. finish. This ensures excellent leach resistance properties and The design and laser adjustment of the resistive element solderability. optimises the limiting element voltage of the resistor. Marking Terminations The body protection is resistant to all normal cleaning solvents The chips are supplied with wrap-around terminations suitable for printed circuits. The chips are not marked and the suitable for soldering. Consult factory for alternative relevant information on type, value, tolerance date code and termination options. quantity are recorded on the reel. Performance Data Maximum Typical 1206: 2 1206: 1 Load at rated power: 1000 hours rated load 70C R% 2010/2512: 1 2010/2512: 0.25 Shelf life test: 12 months at room temperature R% 0.1 0.02 Derating from rated power at 70C Zero at 155C Short term overload: Lesser of 6.25 x rated power or Maximum overload voltage R% 2 0.2 Lightning strike: 1.2/50s & 10/700s - see graph for peak voltage R% 0.5 0.2 Dry heat: 1000 hours at 155C 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% 0.25 0.05 Voltage proof Volts 500 1206: -25 1206: -15 Voltage coefficient of resistance ppm/V 2010: -15 2010: -5 2512: -5 2512: -1.5 Maximum Continuous Voltage Lightning Strike Performance 3500 8 3000 6 2500 4 2000 1500 2 1000 0 0.1 1 10 100 500 Resistance Value (MOhms) 0 0.1 1 10 100 1206-1.2/50 1206-10/700 2010-1.2/50 Resistance Value (MOhms) 2010-10/700 2512-1.2/50 2512-10/700 HVC1206 HVC2010 Note: maximum peak voltage tested was 6kV performance beyond this is estimated. HVC2512 Commodity Chip 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 85 Voltage (V) Peak Voltage (kV)