coat insulated miniature wirewound resistors EU features * * * * * * * Resistors meeting MIL-PRF-26 (U characteristics) High precision resistors with T.C.R. less than 50x10-6/K Flame retardant coating (Equivalent to UL94 V-0) Automatic insertion is applicable Various types of formings are available Excellent in pulse characteristic Marking: Black body color Precision: Alpha-numeric marking * Products with lead-free terminations meet EU RoHS and China RoHS requirements dimensions and construction L Ceramic Core t d D Marking Type L Dimensions inches (mm) t (max.) D d (nom.) CW1H .374.039 (9.51.0) .138.039 (3.51.0) CW2H .472.039 (12.01.0) CW3H .591.039 (15.01.0) l t Resistive Electrode Wire Cap Lead Wire .118 (3.0) .157.039 (4.01.0) .031 (0.8) l 1.18.118 (30.03.0) .236.039 (6.01.0) Insulation Coating ordering information New Part # CW Type 3 Power Rating 1: 1W 2: 2W 3: 3W H Style H: Stability C T521 Termination Material C: SnCu Taping and Forming Axial: T52, T521, T631 Radial: VTP, GT L forming: L12.5A, L15A, L20A, L25A A Packaging A: Ammo R: Reel 10R0 F Nominal Resistance 3 significant figures + 1 multiplier "R" indicates decimal on values <100 Tolerance D: 0.5% F: 1% For further information on packaging, please refer to Appendix C. Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 3/04/08 KOA Speer Electronics, Inc. * 199 Bolivar Drive * Bradford, PA 16701 * USA * 814-362-5536 * Fax: 814-362-8883 * www.koaspeer.com 145 resistors CWH resistors CWH coat insulated miniature wirewound resistors applications and ratings Part Designation T.C.R. (ppm/C) Max. Power Rating CW1PC 1W CW2PC 2W CW3PC 3W 20: R10 50: R<10 Resistance Range () E-24, E-96 (D0.5%) E-24, E-96 (F1%) 0.47 - 220 0.1 - 430 0.47 - 750 0.1 - 2k 0.47 - 1k 0.1 - 3k Rated Ambient Temperature Operating Temperature Range +25C -55C to +275C environmental applications Derating Curve % Rated Power 100 80 60 40 20 0 -40 0 25 40 80 120 160 200 155 Ambient Temperature (C) 240 280 275 Performance Characteristics Parameter Requirement R (% + 0.05) Limit Typical Test Method Within specified tolerance -- 25C Within specified T.C.R. -- +25C/-55C and +25C/+125C Overload (Short Time) 0.2 0.15 Power rating x 5 for 5 seconds Resistance to Solder Heat 0.2 0.15 350C 10C for 3.5 seconds or 260C 5C for 10 seconds Endurance @ 70C 0.5 0.45 25C, 2000 hours 1.5 hr ON, 0.5 hr OFF cycle Low Temperature 0.2 0.15 -65C, 24 hours High Temperature 0.5 0.45 +275C, 250 hours Resistance T.C.R. Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 146 3/03/08 KOA Speer Electronics, Inc. * 199 Bolivar Drive * Bradford, PA 16701 * USA * 814-362-5536 * Fax: 814-362-8883 * www.koaspeer.com