PFS35-50KF1 Riedon

PFS35 Power SMD Film Resistors TO-263 Housing (D-Pak) Resistances from 0.01Ohm to 51kOhms Power Rating to 35Watt Resistance Tolerances to 1% TCR to 50ppm/C Load Stability to 1% Low Ohm Values for Current Sense Applications Exceptional Pulse Performance Solder Reflow Secure at 260C / 20s Isolated Back Plate SPECIFICATIONS Type PFS35 Terminals 2 Terminal Finish Tin Plated Copper Power Rating (with heatsink) 35 W ( 2W on Simple Solder Pad ) Thermal Resistance Rthj-c 3.3 K/W Resistance Range 0.01 to 0.099Ohms 0.1 to 9.9Ohms 10 to 51KOhms Tolerances (others upon request) 5% 1% / 5% 1% Temperature Coefficient 250 ppm/C 100 ppm/C 50 ppm/C Operating Temperature -55C to 175C Max Operating Voltage 500V Inductance 8.4 nH Voltage Proof 2.0kV DC Insulation Resistance Over 1,000 Megohm Resistor Material Thin Film Load Life 1% 90 min ON, 30 min OFF, 1000 hrs 25C Humidity 1% 90-95% RH, 0.1W, 1000 hrs 40C Temperature Cycle 0.25% -55C for 30 min, +155C for 30 min, 5 cycles Solder Heat 0.1% 350C 5C for 3 seconds Vibration 0.25% IEC60068-2-6 Flammability UL94V-0 Reflow soldering lead-free soldering 260C / 20s (2 reflow cycles maximum) Moisture Sensitivity Level MSL-1 Mass 1.5g Ordering Information Part Description: Part Type - Resistance - Tolerance PFS35 10 Ohms 1% Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704 Revised: 201908 004 Riedon, Inc. www.riedon.com sales riedon.comPFS35 Power SMD Film Resistors Power Derating % Power Power Rating Notes - The PFS35 Series Resistors must be attached to a suitable +25 C heatsink. The maximum internal resistor temperature is 175C. 100 To specify an appropriate heatsink use the following formula : 80 T -(P*R )-T MAX HR A RHH = 60 P 40 Where: R = Thermal Resistance of Heatsink ( K/W ) qH R = Thermal Resistance of Resistor ( K/W ) qR 20 +175 C T = Maximum Temperature of Resistor MAX T = Ambient Temperature of Heatsink ( C ) A 0 P = Power Through Resistor ( W ) -50 0 50 100 150 200 Flange Temperature (C) DIMENSIONS Back plate is isolated from both pins. tol. tol. Pulse peak power (W) Dimension mm (mm) inches (inches) 100k A 10.3 0.2 0.405 0.008 B 10.1 0.2 0.400 0.008 10k C 15.3 1.2 0.602 0.047 1k D 5.08 0.1 0.200 0.004 E 1.5 0.05 0.060 0.002 400W 100 F 0.75 0.05 0.030 0.002 35W G 2.2 0.2 0.087 0.008 10 H 4.5 0.2 0.177 0.008 10n 100n 1u 10u 100u 1m 10m 100m 1 10 100 Pulse width (seconds) J 0.5 0.05 0.020 0.002 K 2.5 0.5 0.10 0.02 Tenative continuous-pulse allowance at duty 0.01. Load life test will be necessary in actual equipment, because curve may be changed by resistance, repetition, duty L 5.0 1.0 0.20 0.04 and perating temperature. Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704 Revised: 201908 004 Riedon, Inc. www.riedon.com sales riedon.com