W209001FA IRCTT | Alldatasheet

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IRC Wire and Film Technologies Division General Note A subsidiary of TT electronics plc W20 Series Issue November 2006 IRC reserves the right to make changes in product specifi cation without notice or liability. All information is subject to IRC’s own data and is considered accurate at time of printing. © IRC Wire and Film Technologies Division Telephone: 828 264 8861 • Facsimile: 828 264 8866 • Website: www.irctt.com

  • 736 Greenway Road Boone, North Carolina 28607-1860 Vitreous Enamelled Wirewound Resistors Specifi cations W20 Series
  • Rugged all-welded construction
  • High purity ceramic substrate
  • Impervious lead-free vitreous enamel coating
  • High stability and high reliability
  • Suitable for harsh environments
  • Overload charcteristics ideal for protection circuits
  • Lead-free, RoHS-compliant construction Notes

1 See temperature rise graph

@25°C (Watts) Resistance Range (Ohms) Tolerance (±%) TCR (±ppm/°C) Limiting Element Voltage (Volts) Thermal Impedance1 (°C/watt) W21 3.0 1 - 10K 1 Typical: <+75 Maximum: +200 100 88 0.5 - 10K 2 0.1 - 10K 5 W215 5.0 1 - 15K 1 Typical: <+75 Maximum: +200 160 58 0.5 - 15K 2 0.1 - 15K 5 W22 7.0 1 - 22K 1 Typical: <+75 Maximum: +200 200 44 0.5 - 22K 2 0.1 - 22K 5 W23 10.0 1 - 60K 1 Typical: <+75 Maximum: +200 500 29 1 - 60K 2 0.15 - 60K 5 W24 14.0 1 - 100K 1 Typical: <+75 Maximum: +200 750 22 1 - 100K 2 0.15 - 100K 5 Application Notes The terminations should not be bent closer than 1.6mm from the body of the resistor, and the recommended bend radius is 1.2mm. Terminations are solderable to within 4mm from the resistor body. When cold, vitreous enamel has excellent insulation resistance. In common with all insulation materials, the specifi c resistance of the enamel decreases with increased temperatures. Therefore, resistors operated at near-maximum temperature cannot be considered as insulated and should not be used in contact with any conductive material. Care must be taken when determining clearance distance between the resistor body and printed circuit board or other components to ensure these are not overheated. Resistance is measured 6mm from the resistor body. bn802 W20 Series Datasheet_2.ind1 1bn802 W20 Series Datasheet_2.ind1 1 11/17/06 4:40:29 PM11/17/06 4:40:29 PM

IRC Wire and Film Technologies Division General Note A subsidiary of TT electronics plc W20 Series Issue November 2006 IRC reserves the right to make changes in product specifi cation without notice or liability. All information is subject to IRC’s own data and is considered accurate at time of printing. © IRC Wire and Film Technologies Division Telephone: 828 264 8861 • Facsimile: 828 264 8866 • Website: www.irctt.com

  • 736 Greenway Road Boone, North Carolina 28607-1860 Environmental Performance Test Maximum Typical Load at commercial rating: 1000 Hours at room temperature ∆R% 54 Dry heat: 1000 hours at 200°C ∆R% 2 1 Shelf life: 12 months at room temperature ∆R% 0.03 0.02 Short term overload ∆R% 1.0 0.2 Climatic ∆R% 0.5 0.2 Long term damp heat ∆R% 0.05 0.02 Temperature rapid change ∆R% 0.5 0.2 Resistance to solder heat ∆R% 0.25 0.03 Vibration and bump ∆R% 0.25 0.05 Noise (in a decade of frequency) µV/V zero zero Insulation resistance Ω >0.1GΩ >0.1GΩ Dielectric withstanding voltage V 500 min. 500 min. Operating temperature range °C -55 to +200 Construction A high purity ceramic substrate is assembled with interference-fi t end caps, to which are welded the termination wires. The resistive element is wound on the substrate and welded to the caps, and the vitreous enamel protective coating is then applied. Terminations Copper-clad steel wire, nickel-plated and solder-coated. Marking The resistors are legend-marked with type reference, resistance value and tolerance. Solvent resistance The body protection and marking are resistant to all normal industrial cleaning solvents suitable for printed circuits. Dissipation (watts) 0 5 10 15 20 p Temperature Rise (ºC) 400 300 200 100 W21 W215 W22 W23 W24 Temperature Rise Curve bn802 W20 Series Datasheet_2.ind2 2bn802 W20 Series Datasheet_2.ind2 2 11/17/06 4:40:30 PM11/17/06 4:40:30 PM

W20 Series Issue November 2006 IRC reserves the right to make changes in product specifi cation without notice or liability. All information is subject to IRC’s own data and is considered accurate at time of printing. © IRC Wire and Film T echnologies Division Telephone: 828 264 8861 • Facsimile: 828 264 8866 • Website: www.irctt.com

  • 736 Greenway Road Boone, North Carolina 28607-1860 IRC Wire and Film Technologies Division Dimensions (mm) Type L (max.) D (max.) f (min) ød (nom.) Weight (g) W23 38.0 8.0 30* 0.8 3.5 W24 53.5 8.0 30* 0.8 5.0 Notes 1 * W23 and W24 Series resistors are supplied loose-packed in boxes.

Ordering Information

Specify type, resistance, tolerance and packaging. This example is for a W21, 9000Ω, 5%, taped and ammo-packed. All W20 Series resistors are RoHS-compliant. Packaging W21 and W215 resistors are taped and packaged in ammo packs; W22 resistors are on tape-and-reel; W23 and W24 resistors are loose-packed in boxes. Standard quantities per package Type Pack- aging Code W21 W215 W22 W23 W24 Ammo pack A 1000 750 - - - Reel R - - 700 - - Box B - - - 50 25 L f D d dia IRC Style W20 Resistance Value (≥1007 - First 3 significant digits plus 4th digit multiplier) Example: 1007 = 1000; 10007 = 1001; 150K7 = 1503. 1007 - "R" is used to designate decimal) Example: 517 = 51R0, 17 = 1R00; 0.257 = R250 Sample Part No. Tolerance F = ±1%, G = ±2%, J = ±5% Packaging (A = ammo; R= reel; B = box) W21 9001 J A A 6 10±0.5 f - f ≤1.4mm12 f1 f2 Type A W21 63±2 W215 73±2 W22 73±2 bn802 W20 Series Datasheet_2.ind3 3bn802 W20 Series Datasheet_2.ind3 3 11/17/06 4:40:30 PM11/17/06 4:40:30 PM