FPM BOURNS | Alldatasheet

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n Formerly a Riedon™ product n Resistances from 0.001 to 100 Ω n Resistance tolerances to ±0.1 % n Power rating to 50 watts n TCR to ±15 PPM/°C n Very low inductance n Isolated backplate n RoHS compliant* Specifications Bourns Model FPM3022 FPM3182 FPM3254 FPM3254H FPM4184 Resistance Range (Ω) 0.010 to 100 0.001 to 100 Power Rating (W) free air 70 °C for 3254H with heat sink Thermal Resistance Rthj-c (K/W) 2.0 1.6 Tolerances from 0R001 from 0R005 from 0R01 from 0R02 1 % / 2 % / 5 % Stability 0.1 % / 0.2 % / 0.5 % (depends on stress) Temperature Coefficient Standard Option 1 ±50 PPM/°C (+20 to +60 °C) ±25 PPM/°C (+20 to +60 °C) ±50 PPM/°C (+20 to +60 °C) Max. Current (A) 50 - Contact K 150 - Contact A 200 - Contact F Voltage Proof (VDC) 500 Thermal EMF < 0.1 μV/K Operating Temperature Range -40 to +130 °C Resistor Material CuNiMn-Foil Substrate Anodized Aluminium Housing Epoxy Connector Material Cu Tinned Terminals 2 4 Max. Torque 1 Nm Additional Information Click these links for more information: PRODUCT TECHNICAL LIBRARY INVENTORY SAMPLES CONTACT *RoHS Directive 2015/863, Mar 31, 2015 and Annex. Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. “Bourns” is a registered trademark of Bourns, Inc. in the United States and other countries. In April 2023, BE Services Company, Inc., a subsidiary of Bourns, Inc., purchased certain assets of Riedon, Inc., including its logo and trademarks and the right to continue to manufacture former Riedon™ products. “Riedon Logo” is a registered trademark of BE Services Company, Inc., in the United States. “Riedon” is a trademark of BE Services Company, Inc. CALIFORNIA WARNING: Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

Riedon ™ FPM 3xx, 4xx Precision Foil Power Resistors by Bourns Temperature Coefficient 4000 2000 -2000 -4000 -6000 -8000 -10000 -12000 Δ R/R (PPM) -40 -20 0 20 40 60 80 100 120 140 TEMPERATURE (°C) NOMINAL Δ R/R LIMIT 1 LIMIT 2 How To Order FPM 325 4 H - 10R0 F A Q Model FPM302 FPM318 FPM325 FPM418 Terminals 2 = 2 4 = 4 Special Code (blank) = Standard H = Advanced Heat Sink Resistance (Ω) 4 digits: “R” represents decimal point (example: R010 = 0.010 Ω 10R0 = 10 Ω, 100R = 100 Ω) 3 digits: “L” presents mΩ for resistance (example: 3L20 = 0.0032 Ω, 6L80 = 0.0068 Ω) Tolerance (%) B = ±0.1 F = ±1 C = ±0.25 G = ±2 D = ±0.5 J = ±5 Terminal Type K = Contact K (50 A max. current) A = Contact A (150 A max. current) F = Contact F (200 A max. current) TCR (PPM/°C) R = ±50 Q = ±25 P = ±15 Power Derating Curve 120 100 25 50 0.5 % 0.2 % 0.1 % 85 100 115 130 NOMINAL POWER (%) TEMPERATURE OF THE BACKPLATE (°C) Power Rating Notes The FPM Series Resistors must be attached to a suitable heat sink. The maximum internal resistor temperature is 130 °C. To specify an appropriate heat sink use the following formula: RθH = TMAX - (P x RθR) - TA P Where: RθH = Thermal Resistance of Heat Sink (K/W) RθR = Thermal Resistance of Resistor (K/W) TMAX = Maximum Temperature of Resistor TA = Ambient Temperature of Heat Sink (°C) P = Power Through Resistor (W) Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. Packaging Specifications FPM3022, FPM3182, FPM3254, FPM4184 FPM3254H Typical Part Marking FPM3182 2R00F A MANUFACTURER’S TRADEMARK MODEL NUMBER OF TERMINALS RESISTANCE CODE: “R” REPRESENTS DECIMAL POINT (EXAMPLES: R005 = 0.005 Ω, 10R0 = 10 Ω) RESISTANCE TOLERANCE TERMINAL TYPE

Riedon ™ FPM 3xx, 4xx Precision Foil Power Resistors by Bourns Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. Product Dimensions I IU U 45 ° 24.00 ± 0.2 (.94 ± .008) 17.50 ± 0.2 (.69 ± .008) 38.00 ± 0.3 (1.50 ± .012) 1.40 ± 0.4 (.06 ± .016) 17.50 ± 0.2 (.69 ± .008) 27.50 ± 0.2 (1.08 ± .008) 30.40 ± 0.4 (1.20 ± .016) 3.00 ± 0.1 (.12 ± .004) 4 PLCS. 4 PLCS. 1.5 ± 0.1 (.06 ± .004) x 45 ° 3.20 ± 0.1 (.13 ± .004) 2 PLCS. 1.50 ± 0.1 (.06 ± .004) (A-Contact) 1.10 ± 0.1 (.04 ± .004) (K-Contact) 4.00 ± 0.1 (.16 ± .004) 6.00 ± 0.2 (.24 ± .008) 2.00 ± 0.1 (.08 ± .004) 15.00 ± 0.2 (.59 ± .008) 0.8 ± 0.1 (.031 ± .004) (A-Contact) 0.5 ± 0.1 (.020 ± .004) (K-Contact) 2.80 ± 0.1 (.11 ± .004) I IU U 45 ° 3.20 ± 0.1 (.13 ± .004) 2 PLCS. 17.50 ± 0.2 (.69 ± .008) 38.00 ± 0.3 (1.50 ± .012) 4.00 ± 0.1 (.16 ± .004) 24.00 ± 0.2 (.94 ± .008) 1.40 ± 0.4 (.12 ± .004) 4 PLCS. 17.50 ± 0.2 (.69 ± .008) 27.50 ± 0.2 (1.08 ± .008) 4 PLCS.1.50 ± 0.1 (.06 ± .004) (A-Contact) 1.10 ± 0.1 (.04 ± .004) (K-Contact) 1.5 ± 0.1 (.06 ± .004) x 45 ° 2.00 ± 0.1 (.08 ± .004) 10.8 ± 0.2 (.43 ± .008) 15.00 ± 0.2 (.59 ± .008) 19.00 ± 0.2 (.75 ± .008) 30.40 ± 0.4 (1.20 ± .016) 0.8 ± 0.1 (.031 ± .004) (A-Contact) 0.5 ± 0.1 (.020 ± .004) (K-Contact) 2.80 ± 0.1 (.11 ± .004) FPM3254 FPM3254H *Apply current to “I” terminals and measure on “U” terminals DIMENSIONS: MM (INCHES)

Riedon ™ FPM 3xx, 4xx Precision Foil Power Resistors by Bourns Product Dimensions (continued) I IU U 45 ° 8.50 ± 0.2 (.33 ± .008) 1.40 ± 0.4 (.06 ± .016) 3.00 ± 0.1 (.12 ± .004) 3.20 ± 0.1 (.13 ± .004) 17.50 ± 0.2 (.69 ± .008) 27.50 ± 0.2 (1.08 ± .008) 17.00 ± 0.1 (.67 ± .004) 4 PLCS.1.50 ± 0.1 (.06 ± .004) (A-Contact) 1.10 ± 0.1 (.04 ± .004) (K-Contact) 1.5 ± 0.1 (.06 ± .004) x 45 ° 2.00 ± 0.1 (.08 ± .004) 5.5 ± 0.2 (.22 ± .008) 15.00 ± 0.2 (.59 ± .008) 23.40 ± 0.4 (.92 ± .016) 34.00 ± 0.3 (1.34 ± .012) 40.00 ± 0.3 (1.57 ± .012) 46.00 ± 0.3 (1.81 ± .012) 3.30 ± 0.7 (.13 ± .028) 0.8 ± 0.1 (.031 ± .004) (A-Contact) 0.5 ± 0.1 (.020 ± .004) (K-Contact) FPM3254 (Contact F) FPM4184 DIMENSIONS: MM (INCHES) DIMENSIONS: MM (INCHES) *Apply current to “I” terminals and measure on “U” terminals *Apply current to “I” terminals and measure on “U” terminals Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. II UU 45 ° 3.20 ± 0.1 (.13 ± .004) 2 PLCS. 17.50 ± 0.2 (.69 ± .008) 4.00 ± 0.1 (.16 ± .004) 1.50 ± 0.2 (.06 ± .008) 4.80 ± 0.1 (.19 ± .004) 7.50 ± 0.2 (.30 ± .008) 24.00 ± 0.2 (.94 ± .008) 6.30 ± 0.2 (.25 ± .008) 32.70 ± 0.2 (1.29 ± .008) 34.00 ± 0.2 (1.34 ± .008) 24.00 ± 0.2 (.94 ± .008) 34.00 ± 0.3 (1.34 ± .012) 38.00 ± 0.3 (1.50 ± .012) 1.5 ± 0.1 (.06 ± .004) x 45 ° 6.00 ± 0.2 (.24 ± .008) 2.00 ± 0.1 (.08 ± .004) 15.00 ± 0.2 (.59 ± .008) 3.30 ± 0.7 (.13 ± .028) 0.8 ± 0.1 (.031 ± .004)

Riedon ™ FPM 3xx, 4xx Precision Foil Power Resistors by Bourns DIMENSIONS: MM (INCHES) Product Dimensions (continued) 45 ° 8.50 ± 0.2 (.33 ± .008) 17.00 ± 0.2 (.67 ± .008) 1.40 ± 0.4 (.06 ± .016) 1.10 ± 0.1 (.04 ± .004) 2 PLCS. 2 PLCS.1.50 ± 0.1 (.06 ± .004) (A-Contact) 1.10 ± 0.1 (.04 ± .004) (K-Contact)20.32 ± 0.2 (.80 ± .008) 1.5 ± 0.1 (.06 ± .004) x 45 ° 3.20 ± 0.1 (.13 ± .004) 2.00 ± 0.1 (.08 ± .004) 5.5 ± 0.2 (.22 ± .008) 15.00 ± 0.2 (.59 ± .008) 23.40 ± 0.4 (.92 ± .016) 27.00 ± 0.2 (1.06 ± .008) 32.00 ± 0.3 (1.06 ± .012) 38.00 ± 0.3 (1.50 ± .012) 3.30 ± 0.7 (.13 ± .028) 0.8 ± 0.1 (.031 ± .004) (A-Contact) 0.5 ± 0.1 (.020 ± .004) (K-Contact) FPM3252 FPM3182 45 ° 4.00 ± 0.1 (.16 ± .004) 24.00 ± 0.2 (.94 ± .008) 27.00 ± 0.2 (1.06 ± .008) 30.00 ± 0.2 (1.18 ± .008) 1.40 ± 0.4 (.06 ± .016) 1.10 ± 0.1 (.04 ± .004) 2 PLCS. 2 PLCS.1.50 ± 0.1 (.06 ± .004) (A-Contact) 1.10 ± 0.1 (.04 ± .004) (K-Contact)20.32 ± 0.2 (.80 ± .008) 1.5 ± 0.1 (.06 ± .004) x 45 ° 3.20 ± 0.1 (.13 ± .004) 2 PLCS. 15.00 ± 0.2 (.59 ± .008) 2.00 ± 0.1 (.08 ± .004) 5.5 ± 0.2 (.22 ± .008) 15.00 ± 0.2 (.59 ± .008) 30.40 ± 0.4 (1.20 ± .016) 3.30 ± 0.7 (.13 ± .028) 0.8 ± 0.1 (.031 ± .004) (A-Contact) 0.5 ± 0.1 (.020 ± .004) (K-Contact) Americas: Tel: +1 951-781-5500 • Email: americus@bourns.com Mexico: Tel: +52-614-478-0400 • Email: mexicus@bourns.com Asia: Tel: +886-2-2562-4117 • Email: asiacus@bourns.com EMEA: Tel: +36 88 885 877 • Email: eurocus@bourns.com www.bourns.com REV. 01/26 Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. DIMENSIONS: MM (INCHES)

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