PF2472-5RF1

PF2470 Series TO-247 Power Film Resistors • • • • • • • • TO-247 Housing Rated Power to 140 Watts Resistances from 0.02 to 51K Ohms High Stability Film Resistance Elements Resistance Tolerance to ±1% Low Inductance ( 1000 Meg-Ohm Terminal Finish Tin Plated Copper Mass 6.3g Flammability Rating 94-V0 Environmental Performance DR Test Conditions Load Life ±1% + 0.05W 25°C, 90 min ON, 30 min OFF, 1000 hr Humidity Resistance ±1% + 0.05W 40°C, 90-95% RH, DC 0.1W, 1000 hr Temperature Cycle ±0.25% + 0.05W -55°C for 30 min, +155°C for 30 min, 1000 hr Solder Heat ±0.1% + 0.05W +350°C, 3s Vibration ±0.25% + 0.05W Riedon Inc. © Riedon, Inc. IEC60068-2-6 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 www.riedon.com sales@riedon.com (626) 284-1704 Revised: 201901_003 PF2470 Series TO-247 Power Film Resistors SPECIFICATIONS (continued) Power Derating Power Rating Notes - % Power The PF2470 Series Thin Film Resistors must be attached to a suitable heatsink. The maximum internal resistor temperature is 175°C. +25 °C 100 To specify an appropriate heatsink use the following formula : 80 60 RHH = 40 +175 °C 20 0 -50 0 50 100 150 Flange Temperature (C) A 200 TMAX - (P * RHR) - TA P Where: RqH = Thermal Resistance of Heatsink ( °C/W ) RqR = Thermal Resistance of Resistor ( °C/W ) TMAX = Maximum Temperature of Resistor TA = Ambient Temperature of Heatsink ( °C ) P = Power Through Resistor ( W ) D F B ØH I C ØG E tolerance tolerance Dimension mm A 16.0 0.2 0.63 0.008 B 20.0 0.5 0.787 0.02 C* 14.5 0.5 0.571 0.02 D 4.8 0.2 0.189 0.008 E 10.9 0.1 0.429 0.004 F 5.1 0.5 0.201 0.02 G 0.8 0.05 0.032 0.002 H 3.6 0.1 0.142 0.004 I 3.6 0.2 0.142 0.008 ± Inches ± * Custom lead lengths available. Contact factory. Mounting Notes The PF2470 Series Thin Film Resistors must be attached to a suitable heatsink. Mount resistor using thermal grease to a clean, flat surface. Use a compression washer to provide 150 to 300 pounds ( 665 to 1330N ) of mounting force. Torque mounting screw to 8 in-lbs ( 0.9 N-m ). Back plate is isolated from both pins. Ordering Information Part Description: Part Type - Resistance - Tolerance Example: PF2472 10 Ohm 1% Riedon Inc. © Riedon, Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 www.riedon.com sales@riedon.com (626) 284-1704 Revised: 201901_003 PF2470 Series TO-247 Power Film Resistors Pulse Energy Durability Pulse Peak Power (W) Pulse Energy Durability Pulse Peak Power (W) PF2472_10ohm-1% 1000k Tentative continuous-pulse power allowance at duty 0.01. Load life test will be necessary in actual equipment, Because curve will be changed by resistance, repetition, duty and operating temperature. Dotted shows estimation. 100k PF2473_10ohm-1% 1000k Tentative continuous-pulse power allowance at duty 0.01. Load life test will be necessary in actual equipment, Because curve will be changed by resistance, repetition, duty and operating temperature. Dotted shows estimation. 100k 10k 10k 1k 1k 1100W 100 100 100W 140W 10 10n 100n 1u Riedon Inc. © Riedon, Inc. 10u 100u 1m 10m 100m 1 1300W 10 10 10n 100n 1u 10u 100u 1m 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 www.riedon.com sales@riedon.com 10m 100m 1 10 (626) 284-1704 Revised: 201901_003