Carbon Ceramic Resistors Welwyn Components CCR Series • Replacement for hot moulded carbon composition • High pulse voltage and energy capability • • • Non-inductive Surface mount option UL94-V0 approved coating Electrical Data CCR 1 Power rating at 25°C watts 1 Resistance range ohms 220R – 22K volts See pulse graphs Maximum pulse voltage TCR ppm/°C Resistance Tolerance <1K0 : -700±200 % ≥1K0 : -1000±300 10 or 20 * Standard Values E12 Ambient temperature range °C Thermal Impedance -40 to 80 °C/W 100 * Tolerance applies to date of manufacture. As in all carbon composition parts value drift in storage is possible. This is typically 3% in one year and 5% in 2 years. Physical Data Dimensions (mm) Type L max D max D norm F min CCR 1 15.5 5.5 0.8 30 d D L f Construction Solvent Resistance CCR series resistors are produced from a carbon ceramic composite material, the composition of which is varied to produce the required resistance value. The ceramic rods are fitted with end caps to which are welded the termination wires. Finally, a specially formulated high voltage epoxy coating is applied and the resistors are marked. The body protection and marking are resistant to all normal industrial cleaning solvents suitable for printed circuits. Marking CCR series resistors are colour coded. Resistors with 20% tolerance have three bands indicating value, and resistors with 5% and 10% tolerance have four bands indicating value and tolerance in accordance with IEC62. 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. © Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: [email protected] · Website: www.welwyn-tt.com A subsidiary of TT electronics plc Issue C · 03.06 Carbon Composition Resistors CCR Series Welwyn Components Performance Data Typical Change ∆R% ∆R% ∆R% ∆R% Load at rated power: 1000hrs @ 25°C Dry heat: 1000hrs @ 125°C Long Pulse: 100mS at 60 x Rated Power Short term overload: 2s at 6.25 x Rated Power ±5% ±5% ±2% ±2% Derating from rated power @ 25°C Zero at 125°C Climatic sequence Vibration Temperature rapid change Resistance to solder heat Isolation voltage ∆R% ∆R% ∆R% ∆R% ±8% V 500V ±2% ±2% ±2% Pulse Performance The graphs below show the value changes resulting from applying multiple pulses of increasing peak voltage. The pulse shape was 1.2/50µS as defined in IEC 6100-4-5 / ANSI C62.41. The highest voltage plotted on each graph represents the maximum peak voltage for that resistance value. CCR1-240R CCR1-1K0 120% 100% 80% MEAN MIN MAX 60% 40% 20% Resistance Value (Normalised) Resistance Value (Normalised) 120% 0% 80% MEAN MIN MAX 60% 40% 20% 0% 0 5 10 15 20 0 5 10 1.2/50 PeakVoltage /kV CCR1-2K2 CCR1-15K 20 100% 80% MEAN MIN MAX 60% 40% 20% Resistance Value (Normalised) 120% 0% 100% 80% MEAN MIN MAX 60% 40% 20% 0% 0 5 10 15 1.2/50 PeakVoltage /kV 20 0 5 10 15 20 1.2/50 PeakVoltage /kV © Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: [email protected] · Website: www.welwyn-tt.com 92 15 1.2/50 PeakVoltage /kV 120% Resistance Value (Normalised) 100% Issue C · 03.06 Carbon Composition Resistors CCR Series Welwyn Components Packaging – Axial Version CCR axial products are supplied tape packed ready for loading onto automatic sequencing and insertion machines. Component leads will not protrude beyond the outside edge of the tapes. Standard taping method and critical dimensions are shown below. Standard pack size: 1000 parts. 10 f1 6 f2 67 6 Body location f1 – f2 <– 1.4 mm Surface Mount Option CCR series resistor can be supplied with formed leads suitable for pick and place surface mounting as shown below. For this option add suffix Z to the type, e.g. CCR1Z. 15.50 MAX 5.50 MAX 6.95 4.20 + – 0.20 1.44 MIN 0.2 B B 0.3 A 18.70 + – 0.20 A + 0.60 6.50 – 0.50 0.80 0.80 © Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: [email protected] · Website: www.welwyn-tt.com Issue C · 03.06 Carbon Composition Resistors CCR Series Welwyn Components Packaging – Surface Mount Version Products are supplied on standard carrier tape and 330mm diameter reels suitable for automatic pick and place machines. Carrier tape dimensions and standard reels quantities are given below. P 13mm Ko W Bo Ao 330mm 32mm Dimensions (mm) Type Ao Bo Ko W P T Quantity Per Reel CCR 1Z 7.3 19.2 7.7 32 12 0.4 750 Ordering Procedure Specify type reference etc as shown in this example of CCR1 6.8K ohms 10%, taped and reeled. Type CCR1 – 6K8 K I Lead form Blank Axial Z Surface mount Value (use IEC62 code) Tolerance (use IEC 62 code) K 10% M 20% © Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: [email protected] · Website: www.welwyn-tt.com Issue C · 03.06