Upgrade your electronic systems with the high-reliability aluminum electrolytic screw terminal capacitor, designed for demanding high power input filtering and charge-discharge applications. Manufactured in the US, this capacitor offers exceptional performance at elevated temperatures, making it ideal for welders, strobe lights, and other high-power devices.
Product Features
Capacitance: 300 µF (microfarads)
Voltage Rating: 400 VDC
Operating Temperature: -40°C to +105°C
RoHS Compliant
High reliability with 1000 hours at 105°C
Suitable for high power input filtering and charge-discharge applications
Screw terminal package for secure mounting and connection
Specifications
Capacitance Range
300 to 5,600 µF
Voltage Range
350 to 450 VDC
Capacitance Tolerance
–0% +50%
Ripple Current Multipliers
Frequency
Ripple Multiplier
120 Hz
1.000
400 Hz
1.080
1000 Hz
1.113
2500 Hz
1.175
10 kHz
1.230
DC Leakage Current
I ≤ 3 √CV after 5 minutes; not to exceed 4.0 mA
Operating Temperature
–40°C to +105°C
Additional Details
High reliability with 1000 hours at 105°C
Designed for high power input filtering and charge-discharge applications
Note: All product descriptions and specifications are subject to change. Please verify details with the datasheet or manufacturer for the most current information.
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{"id":10021176738109,"title":"HES301G400U3C","handle":"hes301g400u3c","description":"\u003ch3\u003eKNOWLES \/ CORNELL DUBILIER \/ MALLORY Capacitors - Screw Terminal 300uF 400V\u003c\/h3\u003e\n\u003cp\u003eUpgrade your electronic systems with the high-reliability aluminum electrolytic screw terminal capacitor, designed for demanding high power input filtering and charge-discharge applications. Manufactured in the US, this capacitor offers exceptional performance at elevated temperatures, making it ideal for welders, strobe lights, and other high-power devices.\u003c\/p\u003e\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCapacitance: 300 µF (microfarads)\u003c\/li\u003e\n\u003cli\u003eVoltage Rating: 400 VDC\u003c\/li\u003e\n\u003cli\u003eOperating Temperature: -40°C to +105°C\u003c\/li\u003e\n\u003cli\u003eRoHS Compliant\u003c\/li\u003e\n\u003cli\u003eHigh reliability with 1000 hours at 105°C\u003c\/li\u003e\n\u003cli\u003eSuitable for high power input filtering and charge-discharge applications\u003c\/li\u003e\n\u003cli\u003eScrew terminal package for secure mounting and connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eCapacitance Range\u003c\/th\u003e\n\u003ctd\u003e300 to 5,600 µF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVoltage Range\u003c\/th\u003e\n\u003ctd\u003e350 to 450 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCapacitance Tolerance\u003c\/th\u003e\n\u003ctd\u003e–0% +50%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRipple Current Multipliers\u003c\/th\u003e\n\u003ctd\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFrequency\u003c\/th\u003e\n\u003cth\u003eRipple Multiplier\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e120 Hz\u003c\/td\u003e\n\u003ctd\u003e1.000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e400 Hz\u003c\/td\u003e\n\u003ctd\u003e1.080\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1000 Hz\u003c\/td\u003e\n\u003ctd\u003e1.113\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2500 Hz\u003c\/td\u003e\n\u003ctd\u003e1.175\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10 kHz\u003c\/td\u003e\n\u003ctd\u003e1.230\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDC Leakage Current\u003c\/th\u003e\n\u003ctd\u003eI ≤ 3 √CV after 5 minutes; not to exceed 4.0 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Temperature\u003c\/th\u003e\n\u003ctd\u003e–40°C to +105°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eAdditional Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh reliability with 1000 hours at 105°C\u003c\/li\u003e\n\u003cli\u003eDesigned for high power input filtering and charge-discharge applications\u003c\/li\u003e\n\u003cli\u003eOperates at full rated voltage at 105°C\u003c\/li\u003e\n\u003cli\u003eScrew terminal package (Package Type: BLK)\u003c\/li\u003e\n\u003cli\u003ePart Number: HES301G400U3C\u003c\/li\u003e\n\u003cli\u003eManufacturer: KNOWLES \/ CORNELL DUBILIER \/ MALLORY\u003c\/li\u003e\n\u003cli\u003eCountry of Origin: US\u003c\/li\u003e\n\u003cli\u003eUnit of Measure: Each (EA)\u003c\/li\u003e\n\u003cli\u003eECCN: EAR99\u003c\/li\u003e\n\u003cli\u003eDatasheet: \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-cdm\/cdm-hes301g400u3c.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAdditional Resources\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/www.cde.com\/resources\/catalogs\/AE.pdf\" target=\"_blank\"\u003eHardware \u0026amp; Mounting Options\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/www.cde.com\/catalogs\/cginfo.pdf\" target=\"_blank\"\u003eMechanical Details\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.cde.com\/resources\/ROHS\/CDE-Regulatory-Declaration.pdf\" target=\"_blank\"\u003eRoHS Compliance Declaration\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNote: All product descriptions and specifications are subject to change. Please verify details with the datasheet or manufacturer for the most current information.\u003c\/p\u003e","published_at":"2025-08-12T12:49:11+05:30","created_at":"2025-08-12T12:49:11+05:30","vendor":"Waldom Electonics","type":"Capacitors","tags":["400V","Aluminum","Capacitors","CASE","IMPORT_CSV","KNOWL-CORN-COR","Screw","Terminal","WLDM"],"price":830853,"price_min":830853,"price_max":830853,"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":50611781697853,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"HES301G400U3C","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"HES301G400U3C","public_title":null,"options":["Default Title"],"price":830853,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"HES301G400U3C","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/52535800.jpg?v=1754983154"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/52535800.jpg?v=1754983154","options":["Title"],"media":[{"alt":null,"id":45799224312125,"position":1,"preview_image":{"aspect_ratio":0.636,"height":236,"width":150,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/52535800.jpg?v=1754983154"},"aspect_ratio":0.636,"height":236,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/52535800.jpg?v=1754983154","width":150}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eKNOWLES \/ CORNELL DUBILIER \/ MALLORY Capacitors - Screw Terminal 300uF 400V\u003c\/h3\u003e\n\u003cp\u003eUpgrade your electronic systems with the high-reliability aluminum electrolytic screw terminal capacitor, designed for demanding high power input filtering and charge-discharge applications. Manufactured in the US, this capacitor offers exceptional performance at elevated temperatures, making it ideal for welders, strobe lights, and other high-power devices.\u003c\/p\u003e\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCapacitance: 300 µF (microfarads)\u003c\/li\u003e\n\u003cli\u003eVoltage Rating: 400 VDC\u003c\/li\u003e\n\u003cli\u003eOperating Temperature: -40°C to +105°C\u003c\/li\u003e\n\u003cli\u003eRoHS Compliant\u003c\/li\u003e\n\u003cli\u003eHigh reliability with 1000 hours at 105°C\u003c\/li\u003e\n\u003cli\u003eSuitable for high power input filtering and charge-discharge applications\u003c\/li\u003e\n\u003cli\u003eScrew terminal package for secure mounting and connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eCapacitance Range\u003c\/th\u003e\n\u003ctd\u003e300 to 5,600 µF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVoltage Range\u003c\/th\u003e\n\u003ctd\u003e350 to 450 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCapacitance Tolerance\u003c\/th\u003e\n\u003ctd\u003e–0% +50%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRipple Current Multipliers\u003c\/th\u003e\n\u003ctd\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFrequency\u003c\/th\u003e\n\u003cth\u003eRipple Multiplier\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e120 Hz\u003c\/td\u003e\n\u003ctd\u003e1.000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e400 Hz\u003c\/td\u003e\n\u003ctd\u003e1.080\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1000 Hz\u003c\/td\u003e\n\u003ctd\u003e1.113\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2500 Hz\u003c\/td\u003e\n\u003ctd\u003e1.175\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10 kHz\u003c\/td\u003e\n\u003ctd\u003e1.230\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDC Leakage Current\u003c\/th\u003e\n\u003ctd\u003eI ≤ 3 √CV after 5 minutes; not to exceed 4.0 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Temperature\u003c\/th\u003e\n\u003ctd\u003e–40°C to +105°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eAdditional Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh reliability with 1000 hours at 105°C\u003c\/li\u003e\n\u003cli\u003eDesigned for high power input filtering and charge-discharge applications\u003c\/li\u003e\n\u003cli\u003eOperates at full rated voltage at 105°C\u003c\/li\u003e\n\u003cli\u003eScrew terminal package (Package Type: BLK)\u003c\/li\u003e\n\u003cli\u003ePart Number: HES301G400U3C\u003c\/li\u003e\n\u003cli\u003eManufacturer: KNOWLES \/ CORNELL DUBILIER \/ MALLORY\u003c\/li\u003e\n\u003cli\u003eCountry of Origin: US\u003c\/li\u003e\n\u003cli\u003eUnit of Measure: Each (EA)\u003c\/li\u003e\n\u003cli\u003eECCN: EAR99\u003c\/li\u003e\n\u003cli\u003eDatasheet: \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-cdm\/cdm-hes301g400u3c.pdf\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAdditional Resources\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/www.cde.com\/resources\/catalogs\/AE.pdf\" target=\"_blank\"\u003eHardware \u0026amp; Mounting Options\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/www.cde.com\/catalogs\/cginfo.pdf\" target=\"_blank\"\u003eMechanical Details\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.cde.com\/resources\/ROHS\/CDE-Regulatory-Declaration.pdf\" target=\"_blank\"\u003eRoHS Compliance Declaration\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNote: All product descriptions and specifications are subject to change. Please verify details with the datasheet or manufacturer for the most current information.\u003c\/p\u003e"}
I'm particularly impressed with how carefully the header pins are packed for the RP2350-PiZero, they arrived in perfect condition without any bent pins, which has been a persistent issue with other competitors. This attention to packaging detail really stands out.
I also received the latest A4 revision of the RP2350, which shows you maintain current inventory, that's really valuable for customers who want the most up to date components.
The delivery was quick and hassle free throughout. I'll definitely be recommending you to others!
App feedback: The discounts offered through the app are a nice bonus, but the component search function could be improved to match the ease of use on the website version. The rest of the app functions work well.
