Nichrome Resistor Networks on Ceramic Substrates NQS Series • .025” Pitch DIP • Precision Thin Film • Surface Mount • Resistor Networks • RoHS Compliant • 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 Electrical Operating Temperature Range Resistance Voltco Interlead Capacitance Operating Voltage, Maximum Insulation Resistance Noise, Maximum (MIL-STD-202, Method 308) -55°C to +125°C ≈0 <2pF 100 Vdc or √PR ≥10,000 Megohms -40dB Environmental Thermal Shock plus Power Conditioning ΔR 0.25% Low Temperature Operation ΔR 0.10% Short Time Overload ΔR 0.10% Terminal Strength ΔR 0.10% Moisture Resistance ΔR 0.20% Mechanical Shock ΔR 0.25% Vibration ΔR 0.25% Low/High Temperature Storage ΔR 0.10% Load Life, 1,000 Hours ΔR 0.10% Resistance to Solder Heat Dielectric Withstanding Voltage Temperature Exposure, Maximum ΔR 0.10% 100V for 1 minute 215°C for 3 minutes Marking Permanency per MIL-STD-202, Method 215 Lead Solderability per MIL-STD-202, Method 208 Flammability Storage Temperature Range UL-94V-O Rated -55°C to +125°C Specifications subject to change without notice. General Note TT electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT electronics’ own data and is considered accurate at time of going to print. www.bitechnologies.com www.irctt.com www.welwyn-tt.com © TT electronics plc 11.12 Nichrome Resistor Networks on Ceramic Substrates NQS Series Mechanical Lead Plating 100% matte Tin (RoHS) Lead Material Copper Alloy Lead Configuration Gull Wing Lead Coplanarity 0.004” (0.102mm) Substrate Material Alumina Resistor Material Nichrome Body Material Molded Epoxy Tolerances Accuracy Code A B D F G J Absolute Resistance Tolerances, at 25°C ±0.1% ±0.1% ±0.5% ±1.0% ±2% ±5% Ratio Matching (Matched to R1) ±0.05% ±0.1% ±0.1% ±0.5% NA NA ±25ppm/°C (Q) ±50ppm/°C (P) ±100ppm/°C Temperature Coefficient of Resistance Temperature Coefficient of Resistance, Tracking ±5ppm/°C Standard Resistance Values, Ohms NQS16A NQS20A Ohms Code NQS20B NQS24A Ohms Code Ohms Code Ohms Code 1K 1001 3K 3001 10K 1002 3K 3001 10K 1002 267K 2673 - - - - 34K 3402 - - - - - - 47K 4702 - - - - - - 100K 1003 - - - - - - Power Dissipation, Watts At 70°C Model Package Resistor NQS16 0.8 0.1 NQS20 1.0 0.1 NQS24 1.0 0.1 General Note TT electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT electronics’ own data and is considered accurate at time of going to print. www.bitechnologies.com www.irctt.com www.welwyn-tt.com © TT electronics plc 11.12 Nichrome Resistor Networks on Ceramic Substrates NQS Series Schematics NQS16A, NQS20A, NQS24A Isolated Resistors NQS16B, NQS20B, NQS24B Bussed Resistors N N SCHEMATICS NQS16A, NQS20A, NQS24A N/2 Isolated Resistors 1 NQS16B, NQS20B, NQS24B N/2 Bussed Resistors 1 N N Note: Model NQS16: N = 16 Leads, Model NQS20: N = 20 Leads,Model NQS24: N = 24 Leads. 1 Recommended Solder PadN/2Layouts N/2 1 Note: Model NQS16: N = 16 Leads, Model NQS20: N = 20 Leads,Model NQS24: N = 24 Leads. RECOMMENDED SOLDER PAD LAYOUTS 4 NQS24 0.300 NQS20 7.62 NQS16 0.080 2.03 0.140 3.56 0.080 2.03 0.014 0.35 0.025 0.64 General Note TT electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT electronics’ own data and is considered accurate at time of going to print. www.bitechnologies.com www.irctt.com www.welwyn-tt.com © TT electronics plc 11.12 Nichrome Resistor Networks on Ceramic Substrates NQS Series Outline Dimensions (Inch/mm) Model Dim. A (Max.) Dim. A1 (Max.) D N Dim. B (Max.) Dim. C (Max.) H E Pin #1 Indicator Dim. D (Max.) N/2 Dim. E (Max.) S h x 45˚ Dim. e (Max.) A Dim. H (Max.) A1 Seating Plane 8˚ C e B L Dim. h (Max.) Dim. L (Max.) Dim. S (Max.) NQS16 NQS20 NQS24 0.068 0.068 0.068 1.727 1.727 1.727 0.008 0.008 0.008 0.203 0.203 0.203 0.012 0.012 0.012 0.305 0.305 0.305 0.0098 0.0098 0.0098 0.249 0.249 0.249 0.197 0.345 0.345 5.004 8.763 8.763 0.157 0.157 0.157 3.988 3.988 3.988 0.025 0.025 0.025 0.635 0.635 0.635 0.244 0.244 0.244 6.198 6.198 6.198 0.016 0.016 0.016 0.406 0.406 0.406 0.035 0.035 0.035 0.889 0.889 0.889 0.010 0.06 0.035 0.254 1.524 0.889 Packaging Standard: Magazine All units oriented with lead #1 to the same side.. Magazine: Option: Capacity = 100 Units (16 Leads) 50 Units (20 and 24 Leads) Embossed Tape & Reel (per EIA 481). Reel: Diameter = 7” Reel Capacity = 1,000 Units 13” Reel 2,500 Units General Note TT electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT electronics’ own data and is considered accurate at time of going to print. www.bitechnologies.com www.irctt.com www.welwyn-tt.com © TT electronics plc 11.12 Nichrome Resistor Networks on Ceramic Substrates NQS Series Ordering Information NQS 24 A 1001 B P LF 13 Model Series No. of Leads: 16 = 16 Leads 20 = 20 Leads 24 = 24 Leads Circuit Type: A = Isolated B = Bussed Resistance Code Packaging Option: 7 = 7” Embossed Tape, 1K/Reel 13 = 13” Embossed Tape, 2.5K/Reel (No code used for Magazines.) Lead Finish: LF = Lead Free (RoHS) TCR Code: P = ±50ppm/°C Q = ±25ppm/°C (No code used for ±100ppm/°C.) Accuracy Code: Resistance Tol./Ratio A = 0.1%/0.05% B = 0.1%/0.1% D = 0.5%/0.1% F = 1.0%/0.5% G = 2.0%/1.0% J = 5.0%/1.0% General Note TT electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT electronics’ own data and is considered accurate at time of going to print. www.bitechnologies.com www.irctt.com www.welwyn-tt.com © TT electronics plc 11.12