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MEGGITT HOLSWORTHY HYBRID CIRCUITS ELECTRONIC ASSEMBLIES PRECISION RESISTORS SMD PRECISION RESISTORS PRECISION NETWORKS High Precision Resistors TYPE KC SERIES The KC Series draws together high power and high precision in one attractively priced silicone coated package. Windings are accurately space wound on ceramic or alumium oxide cores. Winding pitch is controlled for high winding density to obtain maximum power dissipation by transmitting more heat down the length of the core, thereby lowering the "Hot Spot" temperature. The resistance wire is welded to the end cap using the most advanced electronically controlled D.C.Welders. Where high reliability is required the resistance wire is sandwiched between a weld tab and the end cap to provide the ultimate in reliability. Coated power resistors have high resistance to commonly used solvents. MEGGITT HOLSWORTHY KEY FEATURES HIGH POWER/PRECISION AND RELIABILITY 0.5 WATTS UP TO 14 WATTS AYRTON PERRY WINDINGS AVAILABLE TOLERANCES TO 0.01% LOW TEMPERATURE COEFFICIENT 350° MAX. TEMPERATURE CONFORMALLY COATED HIGH RELIABILITY MEGGITT ELECTRONIC COMPONENTS SALES ACTION DESK TEL: (01793 611666) FAX: (01793 611777) LOG No FO425 ISSUE 3 2 - PAGES 02-99 SPECIFICATION TYPE KC SERIES ELECTRICAL R10 to 275K Ω 10%, 5%, 3%, 1%, available to ± 0.01% 0.5 watts to 14 watts 1KV (All Types) 1000 M Ω 5lb pull test Meets MIL - STD - 202 ±20ppm/°C - 100Ω and over ±30ppm/°C - 10Ω to 100Ω ±50ppm/°C - 1Ω to 10Ω Closer T.C.'s available. Please ask for quotation -55°C to +355°C. Meets or exceeds military specifications Resistance Values: Resistance Tolerance: Rated Dissipation: Dielectric Strength: Insulation Resistance: Terminal Strength: Solderability: Temperature Coefficient of Resistance: Temperature Range: Environmental Requirements: STYLE POWER RATING watts KC-1/2 A KC-1/2 KC-1A KC-1B KC-1C KC-1D KC-2 KC-2A KC-2B KC-2C KC-2D KC-2E KC-2F KC-3 KC-5 KC-6 KC-7 KC-7A KC-10 KC-10A KC-10B 1.0 1.2 1.5 1.6 1.5 4.5 2.0 3.75 5.00 3.5 3.0 3.75 3.00 5.5 6.0 6.5 8.0 9.0 13.0 12.0 14.0 WORKING MAXIMUM VOLTAGE (2) RESISTANCE Ω volts 20 35 55 67 33 200 79 148 220 157 148 148 148 250 375 400 400 580 930 930 930 DIMENSIONS (IMPERIAL) LENGTH DIAMETER LEAD D ±0.032 L ±0.062 AWG d 0.250 0.280 0.406 0.530 0.330 0.700 0.385 0.560 0.812 0.500 0.500 0.560 0.490 0.625 0.875±0.094 1.000±0.094 1.200±0.094 1.375±0.094 1.815±0.094 1.780±0.094 1.875±0.094 3.4K 4.5K 10K 12K 5K 38K 10K 22K 42K 32K 20K 22K 20K 45K 90K 95K 100K 150K 250K 240K 275K DIMENSIONS 0.094 0.094 0.094 0.094 0.094 0.110 0.187 0.187 0.187 0.250 0.210 0.158 0.158 0.250 0.312±0.062 0.312±0.062 0.312±0.062 0.375±0.062 0.375±0.062 0.375±0.062 0.375±0.062 24 24 22 22 22 22 20 20 20 20 20 20 20 20 18 18 18 18 18 18 18 Wattage vs. Tolerance Derating 120 D t t t t l t t t L t Rated Power % 100 l PAGE 2 OF 2 t d 80 3& 0.5% 5% T ol. 60 01.5 %% 40 0.05% 0.01% 20 025 50 75 100 125 150 175 200 225 250 275 300 325 Ambient Temperature °C 350 Derating curves illustrated above are recognoised as calculated recommendations for determining the max. wattage to be applied to KC power resistors. All Dimension are nominal and in inches. Do Not Scale. HOW TO ORDER KC 2A COMMON PART PACKAGE STYLE KC - Standard Part NC - Non Inductive Winding See Table Above F B ABSOLUTE TOL. at +25°C ± 2°C R.H. = 50% MAX PACKAGING R10 RESISTANCE VALUE 0.1 Ω 1Ω 1K Ω (100 mille Ω) (1000 mille Ω) (1000 Ω) R10 1R0 1K0 K ± 10% J ± 5% E ± 3% F ± 1% D ± 0.5% C ± 0.25% B ± 0.1% Z ± 0.05% Q ± 0.02% T ± 0.01% Z ± 0.005% A - Bulk B - Bandoliered Meggitt Electronic Components Ltd. Ohmic House, Westmead Industrial Estate, Swindon, Wilts. SN5 7US Telephone:(01793)487301(Admin.) (01793)611666 (Sales) EMail:[email protected] Fax:(01793) 611777 or 511513 This publication is issued to provide outline information only and (unless specifically agreed to the contrary by the Company in writing) is not to form part of any order or be regarded as a representation relating to the products or service concerned. We reserve the right to alter without notice the specification, design, price or conditions of supply of any product or service. Whilst Meggitt Electronic Components products are of the very highest quality and reliability, all electronic components can occasionally be subject to failure. Where failure of a Meggitt Electronic Components product could result in life threatening consequences, then the circuit and application must be discussed with the Company. Such areas might include ECG, respiratory. and other medical and nuclear applications and any non fail safe applications circuit.