OHMITE MANUFACTURING TCH35P3R90JE Thick Film Resistor - 35W, 3.9Ω, Through Hole
The OHMITE MANUFACTURING TCH35P3R90JE is a high-performance thick film power resistor designed for demanding applications requiring reliable power dissipation and thermal management. Manufactured in Austria (COO: AT), this resistor features a robust TO220 package with a tube packaging type, ensuring ease of handling and installation.
Resistance Range: 0.05Ω to 10KΩ (higher values available on request)
Very Low Inductance Design for high-frequency applications
Single screw mounting with thermal compound recommended for optimal heat sink contact
Low thermal resistance to heat sink: <4.28°C/W
Electrical insulation from metal heat sink mounting tab
Maximum Operating Voltage: 350V
Dielectric Strength: 1800 VAC
Insulation Resistance: ≥10GΩ
Temperature Coefficient: ±50 ppm/°C for resistance ≥10Ω; varies for lower values
Solder Process: Max temperature 260°C for no more than 10 seconds
Electrical and Mechanical Specifications
Resistance Tolerance
±5% (standard), ±1% (on request)
Resistance Coefficient
10Ω and above: ±50 ppm/°C; lower values have higher ppm/°C
Max Operating Voltage
350V
Resistance Range
0.05Ω to 10KΩ
Power Rating
35W @ 25°C
Temperature Range
-55°C to +175°C
Terminal Material
Copper with lead-free solder plating (97% Sn, 3% Ag)
Physical Dimensions
Dimension
Size (in./mm)
Overall Length
0.390–0.410" (9.91–10.41mm)
Width
0.112–0.120" (2.85–3.05mm)
Height
0.047–0.055" (1.20–1.40mm)
Base Plate Max. Temperature
0.157" (5.00mm)
Application Recommendations
Switching Power Supplies
Snubbers
High Frequency Circuits
Voltage Regulation
Low Energy Pulse Loading
Additional Information
For detailed electrical characteristics, derating curves, and application guidelines, please refer to the datasheet.
Note: This product is designed for use with proper heatsinking. The maximum base plate temperature must be monitored and maintained within specified limits to ensure optimal performance and longevity. Attach a thermocouple to the side of the base plate for accurate temperature measurement. The temperature of the plastic housing or heat sink alone cannot be used to establish the resistor's rating.
{"id":10024601420093,"title":"TCH35P3R90JE","handle":"tch35p3r90je","description":"\u003ch3\u003eOHMITE MANUFACTURING TCH35P3R90JE Thick Film Resistor - 35W, 3.9Ω, Through Hole\u003c\/h3\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eOHMITE MANUFACTURING\u003c\/strong\u003e TCH35P3R90JE is a high-performance thick film power resistor designed for demanding applications requiring reliable power dissipation and thermal management. Manufactured in Austria (COO: AT), this resistor features a robust TO220 package with a tube packaging type, ensuring ease of handling and installation.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003ePower Rating: 35W @ 25°C case temperature\u003c\/li\u003e\n \u003cli\u003eResistance Value: 3.9Ω (standard tolerance ±5%; optional ±1%)\u003c\/li\u003e\n \u003cli\u003eResistance Range: 0.05Ω to 10KΩ (higher values available on request)\u003c\/li\u003e\n \u003cli\u003eVery Low Inductance Design for high-frequency applications\u003c\/li\u003e\n \u003cli\u003eSingle screw mounting with thermal compound recommended for optimal heat sink contact\u003c\/li\u003e\n \u003cli\u003eLow thermal resistance to heat sink: \u0026lt;4.28°C\/W\u003c\/li\u003e\n \u003cli\u003eElectrical insulation from metal heat sink mounting tab\u003c\/li\u003e\n \u003cli\u003eMaximum Operating Voltage: 350V\u003c\/li\u003e\n \u003cli\u003eDielectric Strength: 1800 VAC\u003c\/li\u003e\n \u003cli\u003eInsulation Resistance: ≥10GΩ\u003c\/li\u003e\n \u003cli\u003eTemperature Coefficient: ±50 ppm\/°C for resistance ≥10Ω; varies for lower values\u003c\/li\u003e\n \u003cli\u003eSolder Process: Max temperature 260°C for no more than 10 seconds\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical and Mechanical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eResistance Tolerance\u003c\/th\u003e\n \u003ctd\u003e±5% (standard), ±1% (on request)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eResistance Coefficient\u003c\/th\u003e\n \u003ctd\u003e10Ω and above: ±50 ppm\/°C; lower values have higher ppm\/°C\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMax Operating Voltage\u003c\/th\u003e\n \u003ctd\u003e350V\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eResistance Range\u003c\/th\u003e\n \u003ctd\u003e0.05Ω to 10KΩ\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003ePower Rating\u003c\/th\u003e\n \u003ctd\u003e35W @ 25°C\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eTemperature Range\u003c\/th\u003e\n \u003ctd\u003e-55°C to +175°C\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eTerminal Material\u003c\/th\u003e\n \u003ctd\u003eCopper with lead-free solder plating (97% Sn, 3% Ag)\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePhysical Dimensions\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eDimension\u003c\/th\u003e\n \u003cth\u003eSize (in.\/mm)\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOverall Length\u003c\/td\u003e\n \u003ctd\u003e0.390–0.410\" (9.91–10.41mm)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eWidth\u003c\/td\u003e\n \u003ctd\u003e0.112–0.120\" (2.85–3.05mm)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHeight\u003c\/td\u003e\n \u003ctd\u003e0.047–0.055\" (1.20–1.40mm)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eBase Plate Max. Temperature\u003c\/td\u003e\n \u003ctd\u003e0.157\" (5.00mm)\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eApplication Recommendations\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eSwitching Power Supplies\u003c\/li\u003e\n \u003cli\u003eSnubbers\u003c\/li\u003e\n \u003cli\u003eHigh Frequency Circuits\u003c\/li\u003e\n \u003cli\u003eVoltage Regulation\u003c\/li\u003e\n \u003cli\u003eLow Energy Pulse Loading\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAdditional Information\u003c\/h3\u003e\n\u003cp\u003eFor detailed electrical characteristics, derating curves, and application guidelines, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-oi\/oi-tch35p3r90je.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e This product is designed for use with proper heatsinking. The maximum base plate temperature must be monitored and maintained within specified limits to ensure optimal performance and longevity. Attach a thermocouple to the side of the base plate for accurate temperature measurement. The temperature of the plastic housing or heat sink alone cannot be used to establish the resistor's rating.\u003c\/p\u003e\n\n\u003cp\u003ePart Number: \u003cstrong\u003eTCH35P3R90JE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eManufacturer: \u003cstrong\u003eOHMITE MANUFACTURING\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCountry of Origin: \u003cstrong\u003eAustria (AT)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUnit of Measure: \u003cstrong\u003eEach (EA)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eECCN: \u003cstrong\u003eEAR99\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePackage Type: \u003cstrong\u003eTUBE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDatasheet: \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-oi\/oi-tch35p3r90je.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\n\u003c!-- Disclaimers or additional notes can be added here if applicable. --\u003e\u003cbr\u003e","published_at":"2025-08-14T08:44:08+05:30","created_at":"2025-08-14T08:44:08+05:30","vendor":"Waldom Electonics","type":"","tags":["IMPORT_CSV","OHMIT","WLDM"],"price":61950,"price_min":61950,"price_max":61950,"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":50618683326781,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"TCH35P3R90JE","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"TCH35P3R90JE","public_title":null,"options":["Default Title"],"price":61950,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"TCH35P3R90JE","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/TCH35P3R90JE_12037357_3480a38c.jpg?v=1755141252"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/TCH35P3R90JE_12037357_3480a38c.jpg?v=1755141252","options":["Title"],"media":[{"alt":null,"id":45830450348349,"position":1,"preview_image":{"aspect_ratio":1.0,"height":200,"width":200,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/TCH35P3R90JE_12037357_3480a38c.jpg?v=1755141252"},"aspect_ratio":1.0,"height":200,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/TCH35P3R90JE_12037357_3480a38c.jpg?v=1755141252","width":200}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eOHMITE MANUFACTURING TCH35P3R90JE Thick Film Resistor - 35W, 3.9Ω, Through Hole\u003c\/h3\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eOHMITE MANUFACTURING\u003c\/strong\u003e TCH35P3R90JE is a high-performance thick film power resistor designed for demanding applications requiring reliable power dissipation and thermal management. Manufactured in Austria (COO: AT), this resistor features a robust TO220 package with a tube packaging type, ensuring ease of handling and installation.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003ePower Rating: 35W @ 25°C case temperature\u003c\/li\u003e\n \u003cli\u003eResistance Value: 3.9Ω (standard tolerance ±5%; optional ±1%)\u003c\/li\u003e\n \u003cli\u003eResistance Range: 0.05Ω to 10KΩ (higher values available on request)\u003c\/li\u003e\n \u003cli\u003eVery Low Inductance Design for high-frequency applications\u003c\/li\u003e\n \u003cli\u003eSingle screw mounting with thermal compound recommended for optimal heat sink contact\u003c\/li\u003e\n \u003cli\u003eLow thermal resistance to heat sink: \u0026lt;4.28°C\/W\u003c\/li\u003e\n \u003cli\u003eElectrical insulation from metal heat sink mounting tab\u003c\/li\u003e\n \u003cli\u003eMaximum Operating Voltage: 350V\u003c\/li\u003e\n \u003cli\u003eDielectric Strength: 1800 VAC\u003c\/li\u003e\n \u003cli\u003eInsulation Resistance: ≥10GΩ\u003c\/li\u003e\n \u003cli\u003eTemperature Coefficient: ±50 ppm\/°C for resistance ≥10Ω; varies for lower values\u003c\/li\u003e\n \u003cli\u003eSolder Process: Max temperature 260°C for no more than 10 seconds\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical and Mechanical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eResistance Tolerance\u003c\/th\u003e\n \u003ctd\u003e±5% (standard), ±1% (on request)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eResistance Coefficient\u003c\/th\u003e\n \u003ctd\u003e10Ω and above: ±50 ppm\/°C; lower values have higher ppm\/°C\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eMax Operating Voltage\u003c\/th\u003e\n \u003ctd\u003e350V\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eResistance Range\u003c\/th\u003e\n \u003ctd\u003e0.05Ω to 10KΩ\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003ePower Rating\u003c\/th\u003e\n \u003ctd\u003e35W @ 25°C\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eTemperature Range\u003c\/th\u003e\n \u003ctd\u003e-55°C to +175°C\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eTerminal Material\u003c\/th\u003e\n \u003ctd\u003eCopper with lead-free solder plating (97% Sn, 3% Ag)\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePhysical Dimensions\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eDimension\u003c\/th\u003e\n \u003cth\u003eSize (in.\/mm)\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOverall Length\u003c\/td\u003e\n \u003ctd\u003e0.390–0.410\" (9.91–10.41mm)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eWidth\u003c\/td\u003e\n \u003ctd\u003e0.112–0.120\" (2.85–3.05mm)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHeight\u003c\/td\u003e\n \u003ctd\u003e0.047–0.055\" (1.20–1.40mm)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eBase Plate Max. Temperature\u003c\/td\u003e\n \u003ctd\u003e0.157\" (5.00mm)\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eApplication Recommendations\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eSwitching Power Supplies\u003c\/li\u003e\n \u003cli\u003eSnubbers\u003c\/li\u003e\n \u003cli\u003eHigh Frequency Circuits\u003c\/li\u003e\n \u003cli\u003eVoltage Regulation\u003c\/li\u003e\n \u003cli\u003eLow Energy Pulse Loading\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAdditional Information\u003c\/h3\u003e\n\u003cp\u003eFor detailed electrical characteristics, derating curves, and application guidelines, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-oi\/oi-tch35p3r90je.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e This product is designed for use with proper heatsinking. The maximum base plate temperature must be monitored and maintained within specified limits to ensure optimal performance and longevity. Attach a thermocouple to the side of the base plate for accurate temperature measurement. The temperature of the plastic housing or heat sink alone cannot be used to establish the resistor's rating.\u003c\/p\u003e\n\n\u003cp\u003ePart Number: \u003cstrong\u003eTCH35P3R90JE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eManufacturer: \u003cstrong\u003eOHMITE MANUFACTURING\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCountry of Origin: \u003cstrong\u003eAustria (AT)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUnit of Measure: \u003cstrong\u003eEach (EA)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eECCN: \u003cstrong\u003eEAR99\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePackage Type: \u003cstrong\u003eTUBE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDatasheet: \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-oi\/oi-tch35p3r90je.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\n\u003c!-- Disclaimers or additional notes can be added here if applicable. --\u003e\u003cbr\u003e"}
