FPR 2-T218 Precision Shunt Resistors • • • • • • Resistances from 0.002 Ohm to 20 Ohms Power Rating to 30Watt Resistance Tolerances to ±0.25% TCR to ±50 ppm/°C Load Stability to 0.1% TO-218 (TO-247) Housing SPECIFICATIONS Type FPR 2-T218 Resistance Range 0.002 to 20 Ohms Power rating free air 70°C with heatsink 2W 30 W Thermal Resistance 2.5 °C/W Tolerances from 0.002 Ohms from 0.01 Ohms from 0.02 Ohms 1% / 2% / 5% 0.5% / 1% / 2% / 5% 0.25% / 0.5% / 1% / 2% / 5% Stability (1000h) 0.1% / 0.2% / 0.5% (depends on stress) Temperature Coefficient R ≤ 0.005 Ohm R ≤ 0.01 Ohm R ≤ 0.05 Ohm R ≤ 0.5 Ohm R ˃ 0.5 Ohm ±200 ±150 ±10 ±50 ±30 Voltage Proof 300 VDC Thermal EMF < 0.1µV/°C Operating Temperature Range -40°C to 130°C Resistor Material CuNiMn-Foil Substrate anodized aluminium Housing PPS Connector Material Cu / Tinned Terminals 2 Max. Torque 1 Nm Derating Power Rating Notes - Power ( % from nominal power) 120 The FPR Series Resistors must be attached to a suitable heatsink. The maximum internal resistor temperature is 130°C. To specify an appropriate heatsink use the following formula : 0.5% 100 0.2% 80 0.1% 60 RθH = TMAX - ( P x RθR ) - TA P 40 20 Where: 0 25 50 85 100 115 130 Temperature of the backplate (°C) RθH = Thermal Resistance of Heatsink ( K/W ) RθR = Thermal Resistance of Resistor ( K/W ) TMAX = Maximum Temperature of Resistor TA = Ambient Temperature of Heatsink ( °C ) P = Power Through Resistor ( W ) Ordering Information Part Description: Part Type - Resistance - Contact - Tolerance FPR 2-T218 0.068 Ohms C 0.5% Riedon Inc. 06/13 300 Cypress Avenue Alhambra CA 91801 www.riedon.com (626) 284-9901 (626) 284-1704 FPR 2-T218 Precision Shunt Resistors SPECIFICATIONS (continued) Temperature Coefficient Table A 250 4000 2000 Limit 2 ∆R/R (ppm) -2000 -4000 Nominal ∆R/R -6000 -8000 TCR - Shift (ppm/°C) 200 0 150 100 50 -10000 Limit 1 -12000 0 -40 -20 0 20 40 60 80 100 120 140 2 5 10 20 50 100 200 Resistance Value (mOhm) Temperature (°C) DIMENSIONS Riedon Inc. 06/13 300 Cypress Avenue Dimension mm / tol. inches / tol. A 21.10 ± 0.2 0.83 ± 0.008 A - Contact 21.10 (0.83) B - Contact B 15.50 ± 0.2 0.61 ± 0.008 15.50 (0.61) C 4.90 ± 0.1 0.19 ± 0.004 4.90 (0.19) D 4.00 ± 0.1 0.16 ± 0.004 4.00 (0.16) E 12.60 ± 0.2 0.50 ± 0.008 12.60 (0.50) 03.2 (0.13) F Ø3.2 ± 0.1 0.13 ± 0.004 G 2.95 ± 0.1 0.12 ± 0.004 H 17.75 ± 0.2 0.70 ± 0.008 C - Contact 2.95 (0.12) 17.65 (0.69) 16.85 (0.66) 17.75 (0.70) I 10.16 ± 0.2 0.40 ± 0.008 10.16 (0.40) J 1.40 ± 0.1 0.06 ± 0.004 1.40 (0.06) K 3.00 ± 0.1 0.12 ± 0.004 L 14.50 ± 0.2 0.57 ± 0.008 7.70 (0.30) 5.00 (0.20) 14.50 (0.57) M 2.80 ± 0.1 0.11 ± 0.004 2.70 (0.11) 1.90 (0.07) 2.80 (0.11) N 1.65 ± 0.1 0.06 ± 0.004 1.65 (0.06) O 4.60 ± 0.1 0.18 ± 0.004 4.60 (0.18) P 6.15 ± 0.2 0.24 ± 0.008 6.15 (0.24) Q 0.80 ± 0.1 0.03 ± 0.004 0.80 (0.03) R 2.00 ± 0.1 0.08 ± 0.004 2.00 (0.08) Alhambra CA 91801 www.riedon.com 3.00 (0.12) (626) 284-9901 (626) 284-1704