PF2472-15RF1 RIEDON | Alldatasheet
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Technical content
Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704 www.riedon.com06/16 PF2470 Series
- 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 ( <50nH )
- Isolated Back Plate SPECIFICATIONS
1 Power rating based on 25°C Flange Temperature
2 Power rating based on 25°C Ambient Temperature
3 Consult Factory for Higher or Lower Values
Specifi cation Value Temperature Range -55°C to +155°C Dielectric Strength 2500 VAC Max. Operating Voltage 700 V or √P*R, whichever is less Inductance PF2472 11.7nH / PF2473 12.3nH Insulation Resistance >1000 Meg-Ohm Terminal Finish Tin Plated Copper Environmental Performance ∆R Test Conditions Load Life ±1% + 0.05 Ω 25°C, 90 min ON, 30 min OFF, 1000 hr Humidity Resistance ±1% + 0.05 Ω 40°C, 90-95% RH, DC 0.1W, 1000 hr Temperature Cycle ±0.25% + 0.05 Ω -55°C for 30 min, +155°C for 30 min, 1000 hr Solder Heat ±0.1% + 0.05 Ω +350°C, 3s Vibration ±0.25% + 0.05 Ω IEC60068-2-6 Type Power Rating Heatsink1 Free Air2 Thermal Resistance Resistance Range3 Min Max Tolerances Temperature Coeffi cients PF2473 140W 5W 0.9°C/W 0.02 Ω 51KΩ ±1% ( R≥0.10 Ω ) ±5% ±50ppm/°C ( R≥10 Ω ) ±250ppm/°C ( R < 0.1 Ω ) PF2472 100W 3W 1.3°C/W 0.02 Ω 51KΩ ±1% ( R≥0.10 Ω ) ±5% ±50ppm/°C ( R≥10 Ω ) ±250ppm/°C ( R < 0.1 Ω ) TO-247 Power Film Resistors
Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704 www.riedon.com06/16 SPECIFICATIONS (continued) Power Rating Notes - The PF2470 Series Thin Film Resistors must be attached to a suit- able heatsink. The maximum internal resistor temperature is 155°C. To specify an appropriate heatsink use the following formula : Where: R θH = Thermal Resistance of Heatsink ( °C/W ) R θR = Thermal Resistance of Resistor ( °C/W ) T MAX = Maximum Temperature of Resistor T A = Ambient Temperature of Heatsink ( °C ) P = Power Through Resistor ( W ) -25 0 25 50 75 100 125 150 175 100 120 Power ( % ) Backplate Temperature (°C) Power Derating Curve Mounting Notes - The PF2470 Series Thin Film Resistors must be attached to a suitable heatsink. Mount resistor using thermal grease to a clean, fl at surface. Use a compression washer to provide 150 to 300 pounds ( 665 to 1330N ) of mounting force. Torque mount- ing screw to 8 in-lbs ( 0.9 N-m ). Back plate is isolated from both pins. PF2470 Series TO-247 Power Film Resistors Part Description: Part Type - Resistance - Tolerance Example: PF2472 10 Ohm 1%
Ordering Information
0.630 [16.0] 0.201 [5.1] 0.787 [20.0] 0.571 [14.5] ø0.032 [0.8] 0.429 [10.9] 0.142 [3.6] 0.189 [4.8] ø0.142 [ø3.6] ( * )R P T P R T H MAX R A = - - H H * Custom lead lengths available. Contact factory.
Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704 www.riedon.com06/16 Pulse Peak Power (W) 10n 100n 1u 10u 100u 1m 10m 100m 1 10 1000k 100k k k 䢢 PF2472_10ohm-1% Pulse Energy Durability 1100W 100W 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. 100 Pulse Peak Power (W) 10n 100n 1u 10u 100u 1m 10m 100m 1 10 1000k 100k k k 䢢 PF2473_10ohm-1% Pulse Energy Durability 1300W 140W 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. 100