MODEL 688 Precision Thin Film .300" Dual In-Line Surface Mount Resistor Networks FEATURES * Unique passivation coating eliminates moisture concerns and allows for use in applications traditionally restricted to tantalum nitride * Outperforms other thin film resistor materials providing excellent tolerances, ratio matching, temperature coefficient, and temperature tracking * Improved performance over silicon substrates in stray capacitance, frequency response and stability 4 ELECTRICAL Operating Temperature Range Resistance Voltco Interlead Capacitance Operating Voltage, Maximum Insulation Resistance Noise, Maximum (MIL-STD-202, Method 308) -55C to +125C 0 <2pF 100Vdc or PR 10,000 Megohms -40dB ENVIRONMENTAL R 0.25% R 0.10% R 0.10% R 0.20% R 0.25% R 0.25% R 0.10% R 0.10% R 0.10% R 0.10% 100V for 1 minute 215C for 3 minutes MIL-STD-202, Method 215) MIL-STD-202, Method 208) UL-94V-O Rated -65C to +125C Thermal Shock plus Power Conditioning Short Time Overload Terminal Strength Moisture Resistance Mechanical Shock Vibration Low Temperature Storage High Temperature Exposure Load Life, 1,000 Hours Resistance to Solder Heat Dielectric Withstanding Voltage Temperature Exposure, Maximum Marking Permanency Lead Solderability Flammability Storage Temperature Range Specifications subject to change without notice. 4-147 Model 688 MECHANICAL Lead Plating Lead Material Lead Configuration Lead Coplanarity Substrate Material Resistor Material Body Material 85/15 Tin Lead Copper Alloy Gull Wing 0.004" (0.102mm) Alumina Nichrome Molded Epoxy TOLERANCES Accuracy Code Absolute Resistance Tolerances, at 25C Ratio Temperature Coefficient of Resistance Temperature Coefficient of Resistance, Tracking B 0.1% 0.1% 688B Ohms 50K 100K Code 5002 1003 100K 1003 Percent of Rated Power POWER DISSIPATION, (WATTS) AT 70C Model 688 Package .7 F 1.0% 0.5% 25ppm/C 5ppm/C POWER DERATING CURVE STANDARD RESISTANCE VALUES, OHMS Model 688A D 0.5% 0.1% 100 80 60 40 20 0 -0 Resistor .1 70 125 150 Degrees C SOLDER PAD LAYOUT (Inch/mm) .080 2.03 .025 0.64 .300 7.62 .460 11.7 .050 Typ. 1.27 4-148 Model 688 OUTLINE DIMENSIONS (Inch/mm) .0165 .0025 Typ. 0.419 0.064 +.003 .010 -.001 Typ. 0.25 +0.08 -0.02 .050 Typ. 1.27 16 9 .032 .008 0.81 0.20 .300 Max. 7.62 .405 .005 10.3 0.13 1 .413 Max. 10.5 0 To 8 8 .104 Max. 2.64 .0085 .0035 0.216 0.089 Note: Seating Plane 4 Leads are within .005/0.13 of true position. Maximum allowable mold excursion = 0.006" SCHEMATICS 688A - Isolated Resistors Note: 688B - Bussed Resistors 16 16 1 1 Custom circuits are available. Consult factory. APPLICABLE DOCUMENTS MIL-R-83401 -- Resistor Networks, Fixed, Film, General Specifications MIL-STD-202 -- Test Methods for Electronics and Electrical Component Parts 4-149 Model 688 TYPICAL PART MARKING Back Front Logo 688-A Model Series 4645 -5002B Number Of Leads Date Code Lead #1 Indicator Lot Number Circuit Type Resistance Code Accuracy Code PACKAGING Standard: Magazines All units oriented with lead #1 to the same side. Magazine: Option: Capacity = 50 Units = = 7" Reel 500 Units Embossed Tape & Reel Reel: Diameter Capacity 13" Reel 1,500 Units ORDERING INFORMATION 68 Model Series 8 A 5002 B 7 Number of Leads: 8 = 16 Leads Packaging Option: 7 = 7" Reel Diameter 13 = 13" Reel Diameter (No code used for Magazines.) Circuit Type: A = Isolated B = Bussed Accuracy Code Resistance Code: First 3 digits are significant. Last digit denotes the number of trailing zeros. 4-150 Model 688