OHMITE MANUFACTURING TK20P300RJE Thick Film Resistor - Through Hole, 20W, 300Ω
The OHMITE MANUFACTURING TK20P300RJE is a high-performance thick film power resistor designed for demanding electronic applications. Manufactured in China (COO: CN), this resistor offers reliable power handling and precise resistance values, making it ideal for current sensing, power regulation, and high-frequency circuits.
Product Features
Power Rating: 20 Watts (heat-sink dependent; proper heatsinking required)
Resistance Value: 300Ω with ±5% tolerance
Maximum Working Voltage: √20 * R (for 10mΩ-1KΩ), 150V (for 3KΩ-10KΩ)
Maximum Working Current: 10A (for 0.01Ω-0.1Ω), √20 / R (for 0.3Ω-10KΩ)
Thermal Resistance: <6.25°C/W
RoHS Compliant: Yes
Package Type: TUBE
Mounting: Vertical, tapped for 6-32 screw
Construction: Thick film resistor with tin-plated copper terminals and black anodized aluminum heatsink plate
RoHS Compliant: Yes
Specifications
Material
Resistive element: Thick film chip resistor
Terminals
Tin plated copper (100Sn)
Power Rating
20W (heat-sink dependent; max case temp 150°C)
Resistance Range
10mΩ - 10KΩ
Tolerance
5%
Max. Working Voltage
0.01Ω-1KΩ: √20 * R; 3KΩ-10KΩ: 150V
Max. Working Current
0.01Ω-0.1Ω: 10A; 0.3Ω-10KΩ: √20 / R
TCR
0.01Ω-0.1Ω: ±300ppm; 0.3Ω-10KΩ: ±200ppm
Thermal Resistance, RTH
<6.25°C/W
Additional Details
Designed for use with proper heatsinking; maximum base plate temperature must be monitored.
Best practices include attaching a thermocouple to the side of the resistor's base plate for accurate temperature monitoring.
Discontinued as of May 2013; available until stock depletion.
For detailed technical specifications, please refer to the datasheet.
{"id":10024602894653,"title":"TK20P300RJE","handle":"tk20p300rje","description":"\u003ch3\u003eOHMITE MANUFACTURING TK20P300RJE Thick Film Resistor - Through Hole, 20W, 300Ω\u003c\/h3\u003e\n\n\u003cp\u003eThe OHMITE MANUFACTURING TK20P300RJE is a high-performance thick film power resistor designed for demanding electronic applications. Manufactured in China (COO: CN), this resistor offers reliable power handling and precise resistance values, making it ideal for current sensing, power regulation, and high-frequency circuits.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003ePower Rating: 20 Watts (heat-sink dependent; proper heatsinking required)\u003c\/li\u003e\n \u003cli\u003eResistance Value: 300Ω with ±5% tolerance\u003c\/li\u003e\n \u003cli\u003eMaximum Working Voltage: √20 * R (for 10mΩ-1KΩ), 150V (for 3KΩ-10KΩ)\u003c\/li\u003e\n \u003cli\u003eMaximum Working Current: 10A (for 0.01Ω-0.1Ω), √20 \/ R (for 0.3Ω-10KΩ)\u003c\/li\u003e\n \u003cli\u003eThermal Resistance: \u0026lt;6.25°C\/W\u003c\/li\u003e\n \u003cli\u003eRoHS Compliant: Yes\u003c\/li\u003e\n \u003cli\u003ePackage Type: TUBE\u003c\/li\u003e\n \u003cli\u003eMounting: Vertical, tapped for 6-32 screw\u003c\/li\u003e\n \u003cli\u003eConstruction: Thick film resistor with tin-plated copper terminals and black anodized aluminum heatsink plate\u003c\/li\u003e\n \u003cli\u003eRoHS Compliant: Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eMaterial\u003c\/th\u003e\n \u003ctd\u003eResistive element: Thick film chip resistor\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eTerminals\u003c\/th\u003e\n \u003ctd\u003eTin plated copper (100Sn)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003ePower Rating\u003c\/th\u003e\n \u003ctd\u003e20W (heat-sink dependent; max case temp 150°C)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eResistance Range\u003c\/th\u003e\n \u003ctd\u003e10mΩ - 10KΩ\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eTolerance\u003c\/th\u003e\n \u003ctd\u003e5%\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMax. Working Voltage\u003c\/th\u003e\n \u003ctd\u003e0.01Ω-1KΩ: √20 * R; 3KΩ-10KΩ: 150V\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMax. Working Current\u003c\/th\u003e\n \u003ctd\u003e0.01Ω-0.1Ω: 10A; 0.3Ω-10KΩ: √20 \/ R\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eTCR\u003c\/th\u003e\n \u003ctd\u003e0.01Ω-0.1Ω: ±300ppm; 0.3Ω-10KΩ: ±200ppm\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eThermal Resistance, R\u003csub\u003eTH\u003c\/sub\u003e\n\u003c\/th\u003e\n \u003ctd\u003e\u0026lt;6.25°C\/W\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAdditional Details\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eDesigned for use with proper heatsinking; maximum base plate temperature must be monitored.\u003c\/li\u003e\n \u003cli\u003eBest practices include attaching a thermocouple to the side of the resistor's base plate for accurate temperature monitoring.\u003c\/li\u003e\n \u003cli\u003eDiscontinued as of May 2013; available until stock depletion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor detailed technical specifications, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-oi\/res_tk_tn.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e TK20P300RJE\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e OHMITE MANUFACTURING\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e CN\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUOM:\u003c\/strong\u003e EA\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eECCN:\u003c\/strong\u003e EAR99\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePackage Type:\u003c\/strong\u003e TUBE\u003c\/p\u003e\n\n\u003c!-- If no other content is available, mention the datasheet was not processed --\u003e\n\u003c!-- Datasheet was not processed please search the internet for the part number for more details. --\u003e\u003cbr\u003e","published_at":"2025-08-14T08:46:10+05:30","created_at":"2025-08-14T08:46:11+05:30","vendor":"Waldom Electonics","type":"Resistors","tags":["IMPORT_CSV","OHMIT","Resistors","WLDM"],"price":80106,"price_min":80106,"price_max":80106,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":50618685096253,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"TK20P300RJE","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"TK20P300RJE","public_title":null,"options":["Default Title"],"price":80106,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"TK20P300RJE","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/TK20P300RJE_12037786_c1b52904.jpg?v=1755141375"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/TK20P300RJE_12037786_c1b52904.jpg?v=1755141375","options":["Title"],"media":[{"alt":null,"id":45830468829501,"position":1,"preview_image":{"aspect_ratio":1.35,"height":200,"width":270,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/TK20P300RJE_12037786_c1b52904.jpg?v=1755141375"},"aspect_ratio":1.35,"height":200,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/TK20P300RJE_12037786_c1b52904.jpg?v=1755141375","width":270}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eOHMITE MANUFACTURING TK20P300RJE Thick Film Resistor - Through Hole, 20W, 300Ω\u003c\/h3\u003e\n\n\u003cp\u003eThe OHMITE MANUFACTURING TK20P300RJE is a high-performance thick film power resistor designed for demanding electronic applications. Manufactured in China (COO: CN), this resistor offers reliable power handling and precise resistance values, making it ideal for current sensing, power regulation, and high-frequency circuits.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003ePower Rating: 20 Watts (heat-sink dependent; proper heatsinking required)\u003c\/li\u003e\n \u003cli\u003eResistance Value: 300Ω with ±5% tolerance\u003c\/li\u003e\n \u003cli\u003eMaximum Working Voltage: √20 * R (for 10mΩ-1KΩ), 150V (for 3KΩ-10KΩ)\u003c\/li\u003e\n \u003cli\u003eMaximum Working Current: 10A (for 0.01Ω-0.1Ω), √20 \/ R (for 0.3Ω-10KΩ)\u003c\/li\u003e\n \u003cli\u003eThermal Resistance: \u0026lt;6.25°C\/W\u003c\/li\u003e\n \u003cli\u003eRoHS Compliant: Yes\u003c\/li\u003e\n \u003cli\u003ePackage Type: TUBE\u003c\/li\u003e\n \u003cli\u003eMounting: Vertical, tapped for 6-32 screw\u003c\/li\u003e\n \u003cli\u003eConstruction: Thick film resistor with tin-plated copper terminals and black anodized aluminum heatsink plate\u003c\/li\u003e\n \u003cli\u003eRoHS Compliant: Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eMaterial\u003c\/th\u003e\n \u003ctd\u003eResistive element: Thick film chip resistor\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eTerminals\u003c\/th\u003e\n \u003ctd\u003eTin plated copper (100Sn)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003ePower Rating\u003c\/th\u003e\n \u003ctd\u003e20W (heat-sink dependent; max case temp 150°C)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eResistance Range\u003c\/th\u003e\n \u003ctd\u003e10mΩ - 10KΩ\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eTolerance\u003c\/th\u003e\n \u003ctd\u003e5%\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMax. Working Voltage\u003c\/th\u003e\n \u003ctd\u003e0.01Ω-1KΩ: √20 * R; 3KΩ-10KΩ: 150V\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMax. Working Current\u003c\/th\u003e\n \u003ctd\u003e0.01Ω-0.1Ω: 10A; 0.3Ω-10KΩ: √20 \/ R\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eTCR\u003c\/th\u003e\n \u003ctd\u003e0.01Ω-0.1Ω: ±300ppm; 0.3Ω-10KΩ: ±200ppm\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eThermal Resistance, R\u003csub\u003eTH\u003c\/sub\u003e\n\u003c\/th\u003e\n \u003ctd\u003e\u0026lt;6.25°C\/W\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAdditional Details\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eDesigned for use with proper heatsinking; maximum base plate temperature must be monitored.\u003c\/li\u003e\n \u003cli\u003eBest practices include attaching a thermocouple to the side of the resistor's base plate for accurate temperature monitoring.\u003c\/li\u003e\n \u003cli\u003eDiscontinued as of May 2013; available until stock depletion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor detailed technical specifications, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/productfiles\/mf-oi\/res_tk_tn.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e TK20P300RJE\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e OHMITE MANUFACTURING\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e CN\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUOM:\u003c\/strong\u003e EA\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eECCN:\u003c\/strong\u003e EAR99\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePackage Type:\u003c\/strong\u003e TUBE\u003c\/p\u003e\n\n\u003c!-- If no other content is available, mention the datasheet was not processed --\u003e\n\u003c!-- Datasheet was not processed please search the internet for the part number for more details. --\u003e\u003cbr\u003e"}
