{"product_id":"bpr56-ceramic-wirewound-power-resistor-5w-10w-0-1ohm-10kohm-5pct-2pcs","title":"BPR56 Ceramic Wirewound Power Resistor 5W \/ 10W | 0.1Ω–10kΩ | 5% Tolerance | 2PCS","description":"\u003ch2\u003eBPR56 Ceramic Wirewound Power Resistor — 5W \/ 10W | 0.1Ω–10kΩ | 5% Tolerance | 2PCS\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eBPR56 series ceramic wirewound power resistor\u003c\/strong\u003e is the workhorse of power electronics — a through-hole, cement-encased wirewound resistor designed to dissipate significant power continuously without failure. The ceramic cement body provides excellent thermal conductivity, transferring heat away from the resistance wire and into the surrounding air or heatsink. Available in 5W and 10W power ratings across resistance values from 0.1Ω to 10kΩ, this series covers current sensing shunts, dummy loads, motor braking resistors, power supply bleeder resistors, and high-power voltage dividers. Supplied as 2PCS per order.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBPR56\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWirewound (ceramic cement body)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5W \/ 10W (as selected)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResistance Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.1Ω – 10kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTolerance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±5%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTechnology\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCermet wirewound\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThrough-hole, axial lead\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBody Colour\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite (ceramic cement)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2PCS per order\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhy Wirewound Ceramic Resistors for High-Power Applications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eWirewound Ceramic (BPR56)\u003c\/th\u003e\n\u003cth\u003eCarbon Film Resistor\u003c\/th\u003e\n\u003cth\u003eMetal Film Resistor\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePower rating\u003c\/td\u003e\n\u003ctd\u003e5W – 10W (this product)\u003c\/td\u003e\n\u003ctd\u003e0.125W – 0.5W\u003c\/td\u003e\n\u003ctd\u003e0.125W – 2W\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eThermal stability\u003c\/td\u003e\n\u003ctd\u003eExcellent (ceramic body)\u003c\/td\u003e\n\u003ctd\u003ePoor at high power\u003c\/td\u003e\n\u003ctd\u003eGood up to rated power\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOverload survival\u003c\/td\u003e\n\u003ctd\u003eHigh (ceramic encapsulation)\u003c\/td\u003e\n\u003ctd\u003eLow (film burns)\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInductance\u003c\/td\u003e\n\u003ctd\u003eModerate (wirewound)\u003c\/td\u003e\n\u003ctd\u003eVery low\u003c\/td\u003e\n\u003ctd\u003eVery low\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003ePower dissipation, current sensing, braking\u003c\/td\u003e\n\u003ctd\u003eSignal circuits\u003c\/td\u003e\n\u003ctd\u003ePrecision signal circuits\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eResistance Value Selection Guide\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eResistance\u003c\/th\u003e\n\u003cth\u003eTypical Application\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e0.1Ω – 1Ω\u003c\/td\u003e\n\u003ctd\u003eCurrent sensing shunt, motor current measurement\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e1Ω – 10Ω\u003c\/td\u003e\n\u003ctd\u003eInrush current limiting, soft-start circuits\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e10Ω – 100Ω\u003c\/td\u003e\n\u003ctd\u003eDummy load, power supply testing, bleeder resistor\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e100Ω – 1kΩ\u003c\/td\u003e\n\u003ctd\u003eMotor braking resistor, discharge resistor\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e1kΩ – 10kΩ\u003c\/td\u003e\n\u003ctd\u003eHigh-voltage bleeder, voltage divider in power circuits\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eCeramic cement body\u003c\/strong\u003e — excellent thermal conductivity, transfers heat efficiently to surrounding air or heatsink\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e5W and 10W ratings\u003c\/strong\u003e — handles continuous power dissipation that would destroy standard film resistors\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e0.1Ω–10kΩ range\u003c\/strong\u003e — covers current sensing through high-resistance bleeder applications\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e±5% tolerance\u003c\/strong\u003e — adequate for power dissipation and current sensing applications\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eThrough-hole axial lead\u003c\/strong\u003e — easy PCB mounting or chassis mounting with lead bending\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eOverload resistant\u003c\/strong\u003e — ceramic encapsulation survives brief overloads that would destroy film resistors\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e2PCS per order\u003c\/strong\u003e — matched pair for balanced load applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCurrent sensing shunt resistor (low-value, high-power)\u003c\/li\u003e\n  \u003cli\u003eDummy load for power supply and amplifier testing\u003c\/li\u003e\n  \u003cli\u003eMotor braking resistor (regenerative braking energy dissipation)\u003c\/li\u003e\n  \u003cli\u003ePower supply bleeder resistor (capacitor discharge)\u003c\/li\u003e\n  \u003cli\u003eInrush current limiting resistor\u003c\/li\u003e\n  \u003cli\u003eHigh-power voltage divider\u003c\/li\u003e\n  \u003cli\u003eLED driver current limiting (high-power LEDs)\u003c\/li\u003e\n  \u003cli\u003eBattery discharge resistor\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThermal Derating Guide\u003c\/h3\u003e\n\u003cp\u003ePower resistors must be derated at elevated ambient temperatures. As a general rule:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAt 25°C ambient: operate at full rated power (5W or 10W)\u003c\/li\u003e\n  \u003cli\u003eAt 70°C ambient: derate to approximately 50% of rated power\u003c\/li\u003e\n  \u003cli\u003eFor continuous operation near rated power, mount the resistor with leads bent to allow airflow around the ceramic body, or attach to a heatsink\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use a 5W resistor for a 3W continuous application?\u003c\/strong\u003e\u003cbr\u003eA: Yes, with adequate derating. A 5W resistor running at 3W continuous will run warm but within safe limits at normal ambient temperatures. Ensure adequate airflow around the resistor body.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are wirewound resistors suitable for high-frequency circuits?\u003c\/strong\u003e\u003cbr\u003eA: Wirewound resistors have inherent inductance due to the wire coil construction. For DC and low-frequency AC applications (power supplies, motor drives, audio), this is not an issue. For RF and high-frequency circuits, use non-inductive resistors instead.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I mount these vertically on a PCB?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Bend the leads to the required pitch and mount vertically or horizontally. 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