MODEL 627 T CCITT V.35 Termination Surface Mount Resistor Networks ELECTRICAL Standard Resistance Tolerance, at 25°C Operating Temperature Range Temperature Coefficient of Resistance Temperature Coefficient of Resistance Tracking Voltage Coefficient of Resistance Maximum Operating Voltage Insulation Resistance ±2% -55°C to +125°C ±250ppm/°C ±50ppm/°C ±100ppm/°C 25Vdc ≥10,000 Megohms ENVIRONMENTAL Thermal Shock plus Power Conditioning Short Time Overload Moisture Resistance Mechanical Shock Vibration Shock Low Temperature Operation High Temperature Exposure Load Life, 2,000 Hours (≤33 Ohms = ±0.5 Ohm) Resistance to Solder Heat (Total immersion in solder at 280°C for 10 sec.) Dielectric Withstanding Voltage Temperature Exposure, Maximum Marking Permanency Lead Solderability Flammability Storage Temperature Range ∆R 0.70% ∆R 0.25% ∆R 0.50% ∆R 0.25% ∆R 0.25% ∆R 0.25% ∆R 0.50% ∆R 0.50% ∆R 0.25% 200V for 1 minute 215°C for 3 minutes MIL-STD-202, Method 215 MIL-STD-202, Method 208 UL-94V-O Rated -55°C to +150°C Specifications subject to change without notice. 4-123 Model 627 T 4 MECHANICAL Lead Material Lead Configuration Lead Coplanarity Substrate Material Resistor Material Body Material Copper Alloy, 60/40 Tin-Lead (Dipped) Gull Wing ±0.002 in. (0.057mm) Alumina Cermet Epoxy OUTLINE DIMENSIONS (Inch/mm) .095 Max. 2.41 .395 Max. 10.03 .310 7.87 Max. .008 Typ. 0.20 .028 Typ. 0.71 .008 0.20 .220 ± .005 5.59 ± 0.13 .016 Typ. 0.41 .050 Typ. 1.27 .015 Typ. 0.38 Note: Maximum allowable mold excursion = 0.006" SCHEMATIC 14 1 50Ω 50Ω 125Ω 2 13 125Ω 50Ω 50Ω 12 3 50Ω 50Ω 125Ω 4 11 125Ω 50Ω 50Ω 50Ω 5 10 50Ω 125Ω 50Ω 9 6 125Ω 50Ω 8 7 4-124 Model 627 T TYPICAL APPLICATION V.35 Balanced Interface 1µF VCC TX1 IN TX2 IN TX3 IN RX2 OUT RX1 OUT (5V) S1 (0V) S2 4 3 3 2 1µF DCE 1 27 DTE 1µF 1µF 27 1µF 4 3 1µF 2 1 3 26 15 25 16 24 18 23 17 22 20 21 19 18 24 17 23 16 26 9 15 25 9 10 5 5 10 6 7 13 12 11 8 7 12 6 13 14 VCC RX1 OUT RX2 OUT RX3 OUT TX2 IN TX1 IN S1 (0V) S2 (5V) OE Linear Techology Model LTC 1345 Linear Techology Model LTC 1345 BI Model 627T provides 6 of these termination networks in a single package 50Ω 125Ω 50Ω POWER DISSIPATION, WATTS AT 70°C POWER DERATING CURVE Percent of Rated Power 100 80 60 40 20 0 Model 627 T -0 70 Package 1.28 Per Resistor 0.25 125 150 Degrees C 4-125 Model 627 T 4 TYPICAL PART MARKING Manufacturer’s Trademark Part Number 627T50/125 Date Code Part Marking UK MADE Part Marking 7T500 Lead #1 Indicator PACKAGING Standard: Tape & Reel Conforms to requirements of EIA-481. All units oriented with lead #1 to the left of direction of feed. Tape: Reel: Option: Width Pocket Pitch Diameter Capacity = = = = = 24mm Embossed Antistatic Plastic 12mm 13” (330mm) Maximum 2,000 Units Magazines Conforms to EIA and JEDEC standards. All units oriented with lead #1 to the same side. Magazine: Capacity = 50 Units ORDERING INFORMATION 62 7 T 500 / 1250 TR4 Model Series Standard Tape & Reel Packaging: (No code used for Magazines.) No. of Leads: 7 = 14 leads Resistance Values Circuit Type: T = V.35 Termination 4-126 Model 627 T