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CTN Vishay Electro-Films CHIP RESISTORS Nichrome Thin Film, Center Tapped Resistors FEATURES • Wire bondable Product may not be to scale • Center tap feature • Chip size: 0.030 inches square • Resistance range total: 10 Ω to 1 MΩ • Ratio tolerances to: 0.1 % The CTN series is a center tapped nichrome resistor chip providing excellent stability at 250 mW power levels. The CTN offers the designer flexibility in use as either a single value resistor or as two resistors with a center tap feature. The CTNs six bonding pads allows the user increased layout flexibility. • Resistor material: Nichrome • Oxidized silicon substrate for good power dissipation The CTNs are manufactured using Vishay Electro-Films (EFI) sophisticated thin film equipment and manufacturing technology. The CTNs are 100 % electrically tested and visually inspected to MIL-STD-883. APPLICATIONS The CTN center-tapped resistor chips are used mainly in feedback circuits of amplifiers where ratio matching, high power and tracking between two resistors is critical. Recommended for Hermetic environment where die is not exposed to moisture. For low values, the resistance of the six bonding-pad configurations can vary, depending on the method of measurement used. Vishay EFI measures low-value resistors by the four wire Kelvin technique. TEMPERATURE COEFFICIENT OF RESISTANCE, VALUES AND TOLERANCES Tightest Standard Tolerance Available PROCESS CODE 0.1 % 0.5 % CLASS H* 260 201 ± 100 ppm/°C 262 200 ± 50 ppm/°C 263 202 ± 25 ppm/°C CLASS K* 203 ± 10 ppm/°C 261 *MIL-PRF-38534 inspection criteria 10 Ω 100 Ω 200 Ω 1 kΩ 1 MΩ STANDARD ELECTRICAL SPECIFICATIONS PARAMETER TCR Tracking Between Halves (RA/RB) ± 2 ppm/°C * Center Tap Ratio, RA/RB Tolerance 1 ± 1 % standard Noise, MIL-STD-202, Method 308, 100 Ω - 250 kΩ - 35 dB typ. ± 0.1 % ΔR/R Stability, 1000 h, + 125 °C, 125 mW Operating Temperature Range - 55 °C to + 125 °C Dielectric Voltage Breakdown 200 V 1012 min. Insulation Resistance Operating Voltage 100 V max. DC Power Rating at + 70 °C (Derated to Zero at + 175 °C) 250 mW * 20 ppm/°C for R < 20 www.vishay.com 76 For technical questions, contact: efi@vishay.com Document Number: 61024 Revision: 12-Mar-08
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