CCR WELWYN | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 4

Technical content

  • Replacement for hot moulded carbon composition
  • High pulse voltage and energy capability
  • Non-inductive
  • Surface mount option
  • UL94-V0 approved coating 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: info@welwyn-tt.com · Website: www.welwyn-tt.com Issue C · 03.06 A subsidiary of TT electronics plc Welwyn Components Dimensions (mm) Type L max D max D norm F min CCR 1 15.5 5.5 0.8 30 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. Electrical Data * Tolerance applies to date of manufacture. As in all carbon composition parts value drift in storage is possible. This is typi cally 3% in one year and 5% in 2 years. Physical Data Construction Solvent Resistance 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. Marking LD f d CCR 1 Power rating at 25°C watts 1 Resistance range ohms 220R – 22K Maximum pulse voltage volts See pulse graphs TCR ppm/°C <1K0 : -700±200 ≥1K0 : -1000±300 Resistance Tolerance % 10 or 20 * Standard Values E12 Ambient temperature range °C -40 to 80 Thermal Impedance °C/W 100

Carbon Composition Resistors CCR Series Welwyn Components Performance Data Typical Change Load at rated power: 1000hrs @ 25°C ∆R% ±5% Dry heat: 1000hrs @ 125°C ∆R% ±5% Long Pulse: 100mS at 60 x Rated Power ∆R% ±2% Short term overload: 2s at 6.25 x Rated Power ∆R% ±2% Derating from rated power @ 25°C Zero at 125°C Climatic sequence ∆R% ±8% Vibration ∆R% ±2% Temperature rapid change ∆R% ±2% Resistance to solder heat ∆R% ±2% Isolation voltage V 500V 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. Pulse Performance © 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 Issue C · 03.06 20% 40% 60% 80% 100% 120% CCR1-240R 1.2/50 PeakVoltage /kV MEAN MIN MAX Resistance Value (Normalised) 51 0 1 5 2 0 0 20% 40% 60% 80% 100% 120% CCR1-1K0 1.2/50 PeakVoltage /kV MEAN MIN MAX Resistance Value (Normalised) 51 0 1 5 2 0 20% 40% 60% 80% 100% 120% CCR1-2K2 1.2/50 PeakVoltage /kV MEAN MIN MAX Resistance Value (Normalised) 51 0 1 5 2 0 0 20% 40% 60% 80% 100% 120% CCR1-15K 1.2/50 PeakVoltage /kV MEAN MIN MAX Resistance Value (Normalised) 51 0 1 5 2 0

Carbon Composition Resistors CCR Series Welwyn Components 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. Packaging – Axial Version 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. Surface Mount Option © 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 Issue C · 03.06

15.50 MAX

1.44 MIN

A A B B18.70 0.20 0.80 0.80 6.50 4.20 0.20 6.95

5.50 MAX

+ 0.60 0.2 0.3 – 0.50 f1 f2 Body location f1 – f2 1.4 mm <–

Carbon Composition Resistors CCR Series Welwyn Components 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. Packaging – Surface Mount Version Specify type reference etc as shown in this example of CCR1 6.8K ohms 10%, taped and reeled. Ordering Procedure Dimensions (mm) Type Ao Bo Ko W P T CCR 1Z 7.3 19.2 7.7 32 12 0.4 750 Quantity Per Reel © 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 Issue C · 03.06 Type CCR1 – 6K8 K I Lead form Value (use IEC62 code) Tolerance (use IEC 62 code) Blank Axial Z Surface mount K 10% M 20% Ao Bo W PK o 32mm 13mm 330mm