MODEL BCN31 R/2R Ladder Network 8 Bit, 2512 Size Thick Film Leadless Chip Packages FEATURES • 8 bit ladder network in a 10 terminal leadless chip package • Convex termination with square edges and corners • Topside marking for easy identification • Solder plated termination with nickel barrier 4 BENEFITS • Saves board space • Reduces cost • Single component reliability • Leadless package offers improved performance APPLICATIONS • Termination network in analog to digital and digital to analog conversion circuits ELECTRICAL Standard Resistance Range, Ohms Standard Resistance Tolerance Operating Temperature Range Temperature Coefficient of Resistance Operating Voltage, Maximum Insulation Resistance Power Rating, Watts at 70°C Ladder Network Accuracy 1K to 100K ±2% -40°C to +125°C ±100ppm/°C 50Vdc or √pr 100 Megohms 25mW per Resistor / 400mW per Package 8 Bits: ±1/2LSB Specifications subject to change without notice. 4-13 Model BCN31 Ladder ENVIRONMENTAL 1,000 hours at +40°C, 95% R.H. (3.0% ∆R) 1,000 hours at 70°C (3.0% ∆R) 2.5 x rated voltage, 5 seconds (2.0% ∆R) -55°C to +125°C, 5 cycles (1.0% ∆R) 260°C for 10 seconds (1.0% ∆R) 1,000 hours at 70°C (3.0% ∆R) Moisture Resistance High Temperature Operation Short Time Overload Temperature Cycling Resistance to Solder Heat Load Life SCHEMATIC (Inch/mm) 10 9 8 2R R R R 2R 1 7 2R R R 2R 2R R 3 2R R 2R 2 6 2R 2R 4 5 SOLDER PAD LAYOUT (Inch/mm) P Y A B Y X X C Wave Solder Process Re-Flow Solder Process P A B C X Y A B C X Y .050 1.27 .084 2.10 .148 3.70 .014 0.35 .036 0.90 .032 0.80 .084 2.10 .148 3.70 .014 0.35 .036 0.90 .032 0.80 4-14 Model BCN31 Ladder OUTLINE DIMENSIONS (Inch/mm) .252±.008 6.4±0.20 Solder Termination .012±.006 0.30±0.15 .012±.004 0.30±0.10 .122±.008 3.10±0.20 L 253 .050±.002 1.27±.051 .022±.004 0.55±.10 .032±.004 0.80±0.10 4 POWER DERATING CURVE Percent of Rated Power 100 80 60 40 20 0 -55 0 70 125 Ambient Temperature (°C) STANDARD RESISTANCE VALUES, OHMS Value (R1/R2) Code 1K/2K 102 10K/20K 103 25K/50K 253 4-15 50K/100K 503 100K/200K 104 Model BCN31 Ladder ORDERING INFORMATION BCN 31 AB L XXX G 7 Width: 31 = 3.1mm Packaging Option: 7 = 7" Tape & Reel, 4K/Reel 13 = 13" Tape & Reel, 16K/Reel Edge Option: AB = Square Edge, Convex Termination Tolerance: G = ±2% Circuit Type: L = Ladder Resistance Code: 102 = 1K / 2K 103 = 10K / 20K 253 = 25K / 50K 503 = 50K / 100K 104 = 100K / 200K Model Series 4-16 Model BCN 31 Ladder