LSQ-A-10

TOKEN LSQ Open Air Current Sense Resistors Kelvin Four Terminal Resistors Token (LSQ) Family Four Terminal Resistors handle high-wattage applications Preview Providing ultralow resistance values (to 0.01 ohm) for relatively high current requirements, new four-terminal cement filling resistors from Token combine the advantages of a Kelvin configuration with PC board mounting capability. The Kelvin (or four-terminal) configuration enables current to be applied through two opposite terminals and a sensing voltage to be measured across the other two terminals, eliminating the resistance and temperature coefficient of the terminals for a more accurate current measurement. The four terminal resistors are a new version of Token’s (LSQ) Current Sense Family Series which was specially designed for use in a Kelvin configuration where a current is applied through two opposing leads and sensing voltage is measured across the other two leads. Token LSQ series is specifically designed for low resistance applications requiring the highest accuracy and temperature stability. The advantages of Kelvin configuration enable the resistance and temperature coefficient of the leads to be effectively eliminated. The need to connect to the leads at precise test points is eliminated, allowing for tighter tolerance on the end application. Also results in a lower temperature coefficient of resistance and lower self-heating drift which may be experienced on two-terminal resistors. Token will also produce low ohm resistor LSQ series outside these specifications to meet customer requirements. Contact us with your specific needs. Features - Welded & fireproof construction. - Superior anti-surge capability & Low TCR. - Thermal conductivity and moisture resistance. - Special inorganic potting construction provides high moisture resistance and thermal conductivity. - 4 leads for Kelvin connection with extremely low resistance values. Applications - Automatic Test Equipment. - Current Sensing Application. - High Precision Instrumentation. - Industrial, Medical and Military. - Measurement Instrumentation. Version 2010 http://www.token.com.tw/ rfq token.com.tw 01 of 04 TOKEN LSQ Open Air Current Sense Resistors (LSQ-A) Specification & Dimensions (Unit: mm) LSQ-A L W H P d Type LSQ-A-3 LSQ-A-5 LSQ-A-7 LSQ-A-10 LSQ-A-15 Power (Watts) 3 5 7 10 15 Resistance Range (Ω) R01~R1 R01~R1 R01~R1 R01~R1 R01~R1 L 22±1.0 22±1.5 35±2.0 48±2.0 48±2.0 Dimensions (Unit: mm) W±1 H±1 8 8 9.5 9.5 9.5 9.5 9.5 9.5 12.5 12.5 P±1 14 14 25 36 36 d±0.5 0.8 0.8 0.8 0.8 0.8 (LSQ-B) Specification & Dimensions (Unit: mm) LSQ-B L W H P1 P Φd Type LSQ-B-5 Power (Watts) 5 Resistance Range (Ω) R01~R1 L±2 26 W±1 5 Dimensions (Unit: mm) H±1 P±1 10 20 P1±1 12 d±0.5 0.8 02 of 04 http://www.token.com.tw/ rfq token.com.tw Version 2010 TOKEN LSQ Open Air Current Sense Resistors LSQ-C (LSQ-C) Specification & Dimensions (Unit: mm) L H Φd P W P1 Type LSQ-C-10 Power (Watts) 10 Resistance Dimensions (Unit: mm) Range (Ω) L±2 W±1 H±1 R01~R1 18 10.5 20 P±1 12 P1±1 5 d±0.5 1.0 Power Derating Curve Power Derating Curve 120 R at ed L oa d ( %) 100 80 60 40 20 0 -55 -25 25 40 75 125 175 225 275 Ambient Temperature (℃) Version 2010 http://www.token.com.tw/ rfq token.com.tw 03 of 04 TOKEN LSQ Open Air Current Sense Resistors KELVIN ELECTRICAL CONNECTION Characteristic Specification 1 R 4 2 3 TERMINALS 2 & 3 CURRENT TRACES. TERMINALS 1 & 4 SENSE TRACES. Test Items Resistance Tolerances Temperature Coefficients Operating Temperature Range Maximum Working Voltage Terminal Tensile Strength Withstand Voltage Short Time Overload Thermal Shock Load Life Test Method Specification D(±0.5%), F(±1%), G(±2%), J(±5%) ±100 ppm/°C -55°C~275°C (P40°C x R)1/2 50N, 10s ΔR≤±1.0%R 1000V, 1 Min. No damage on the appearance. 5 times rated power, 5s ΔR≤±4.0%R -55°C~+275°C, 5 cycles, 30 min. ΔR≤±5.0%R 40°C, 1000h 1.5 hours on, 0.5 hours off. ΔR≤±5.0%R How to Order LSQ-A   Rated power Code 3 5 7 10 15 15  R01  J  P   Part Number: LSQ-A, LSQ-B, LSQ-C  Tolerance % Rated power 3 Watt 5 Watt 7 Watt 10 Watt 15 Watt Code Tolerance % J  Package-Code Code ±5% Package-Code P Bulk  Resistance Value (Ω) Code R01 Resistance Value (Ω) R05 R1 0.01Ω 0.05Ω 0.1Ω Back to 1st Page - Kelvin Four Terminal Resistors (LSQ) 04 of 04 http://www.token.com.tw/ rfq token.com.tw Version 2010