{"product_id":"wh148-rotary-potentiometer-kit-b5k-b100k-knobs-assortment","title":"40PCS WH148 Rotary Potentiometer Kit B5K-B100K + 20 Knobs","description":"\u003cp\u003eGet everything you need for precise resistance control in one convenient kit. This \u003cstrong\u003e40-piece WH148 rotary potentiometer assortment\u003c\/strong\u003e includes five resistance values — B5K, B10K, B20K, B50K, and B100K — plus 20 colorful knob covers, shaft nuts, and a handy storage box. Whether you're a hobbyist, electronics student, or seasoned engineer, this kit delivers reliable performance for audio circuits, dimmers, signal control, and countless DIY projects.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose This Potentiometer Kit?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5 Resistance Values Included:\u003c\/strong\u003e 4 pcs each of B5K, B10K, B20K, B50K, and B100K — 20 potentiometers total across a wide resistance range (1K–500K Ω).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e20 Color-Coded Knob Covers:\u003c\/strong\u003e 4 each in black, white, red, yellow, and blue — making it easy to visually organize your builds at a glance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecision Linear Taper (Type B):\u003c\/strong\u003e The B-taper characteristic provides smooth, accurate resistance adjustment for fine-tuned control in your circuits.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Cermet \/ Metal Alloy Construction:\u003c\/strong\u003e Built for longevity with a rated rotational life of 10,000 cycles and a robust 300° rotation angle.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy No-Tool Installation:\u003c\/strong\u003e Standard 3-pin through-hole design with a 6mm knurled shaft and 7mm mounting thread — fits most standard panel cutouts without specialized equipment.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Perfect for audio volume controls, light dimmers, signal generators, Arduino\/Raspberry Pi projects, guitar pedals, and general electronic circuits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWH148\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResistance Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1K – 500K Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResistance Values Included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eB5K, B10K, B20K, B50K, B100K (4 pcs each)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResistance Tolerance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±20%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTaper Characteristic\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eB (Linear)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Operating Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC 150V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.125W\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRotation Angle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300° ± 5°\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRotational Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10,000 cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRotation Noise\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;47mV\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResidual Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;20Ω (Terminals 1-2 \u0026amp; 2-3)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInsulation Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;100MΩ at DC500V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRotating Torque\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 – 200 gf·cm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShaft Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6mm (knurled)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting Thread Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBase Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16 × 7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKnob Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15 × 17mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTotal Shaft Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e170 × 95 × 23mm (6.69 × 3.74 × 0.91 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePin Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-Pin\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e4 × B5K Potentiometer\u003c\/li\u003e\n  \u003cli\u003e4 × B10K Potentiometer\u003c\/li\u003e\n  \u003cli\u003e4 × B20K Potentiometer\u003c\/li\u003e\n  \u003cli\u003e4 × B50K Potentiometer\u003c\/li\u003e\n  \u003cli\u003e4 × B100K Potentiometer\u003c\/li\u003e\n  \u003cli\u003e4 × Black Knob Covers\u003c\/li\u003e\n  \u003cli\u003e4 × White Knob Covers\u003c\/li\u003e\n  \u003cli\u003e4 × Red Knob Covers\u003c\/li\u003e\n  \u003cli\u003e4 × Yellow Knob Covers\u003c\/li\u003e\n  \u003cli\u003e4 × Blue Knob Covers\u003c\/li\u003e\n  \u003cli\u003eShaft nuts \u0026amp; storage box included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eGreat Companions for Your Workshop\u003c\/h2\u003e\n\u003cp\u003eIf you enjoy hands-on electronics and DIY builds, you may also like these items from our store:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What resistance values are included in the WH148 potentiometer kit?\u003c\/h4\u003e\n\u003cp\u003eA: The kit includes 20 rotary potentiometers across five resistance values — 4 pcs each of B5K, B10K, B20K, B50K, and B100K — covering a broad range from 5K to 100K ohms, suitable for a wide variety of electronic circuits and DIY projects.\u003c\/p\u003e\n\u003ch4\u003eQ: Are the knobs included and do they fit the WH148 shaft?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The kit includes 20 knob covers (4 each in black, white, red, yellow, and blue) designed to fit the standard 6mm knurled shaft of the WH148 potentiometer. Simply press them onto the shaft for a secure, professional-looking finish.\u003c\/p\u003e\n\u003ch4\u003eQ: What applications are these WH148 rotary potentiometers suitable for?\u003c\/h4\u003e\n\u003cp\u003eA: These potentiometers are ideal for audio volume and tone controls, light dimmers, signal generators, Arduino and Raspberry Pi projects, guitar effect pedals, and general-purpose electronic circuits requiring variable resistance adjustment up to AC 150V at 0.125W rated power.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the difference between the B-taper and A-taper potentiometers?\u003c\/h4\u003e\n\u003cp\u003eA: The B-taper (also called linear taper) provides a uniform, proportional change in resistance as you rotate the shaft — making it ideal for precise signal control and measurement applications. The A-taper (audio\/logarithmic) is tuned to human hearing perception and is commonly used for audio volume knobs. This kit features B-taper potentiometers for linear, predictable adjustment.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What resistance values are included in the WH148 potentiometer kit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The kit includes 20 rotary potentiometers across five resistance values — 4 pcs each of B5K, B10K, B20K, B50K, and B100K — covering a broad range from 5K to 100K ohms, suitable for a wide variety of electronic circuits and DIY projects.\"}}, {\"@type\": \"Question\", \"name\": \"Are the knobs included and do they fit the WH148 shaft?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! 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