Introducing the high-performance coupled inductor part number SDQ25-330-R manufactured by Eaton Electronics, based in the Philippines. This RoHS-compliant component is designed for a variety of power conversion applications, including transformers, buck and boost circuits, and mobile device power supplies.
Product Features
Dual winding shielded drum inductor/transformer suitable for use as a single inductor or in coupled inductor/transformer configurations with a 1:1 turns ratio
Windings can be connected in series or parallel to achieve a broad range of inductance and current ratings
Current handling capacity up to 0.692A (Irms)
Inductance value of 33µH, with a tolerance of ±20%
Ferrite shielded core for low electromagnetic interference (EMI)
500V DC isolation between windings for safety and performance
Suitable for applications such as SEPIC, flyback, buck, and boost converters, as well as mobile phones, laptops, digital cameras, media players, PCMCIA cards, and GPS systems
Technical Specifications
Part Number
Rated Inductance (µH)
Irms (A)
Isat (A)
DCR (Ω)
Voltage (V)
SDQ25-330-R
33
0.692
0.533
0.3795
135.2
Environmental & Mechanical Data
Storage and operating temperature range: -40°C to +125°C
Solder reflow compatible (J-STD-020 compliant)
Package Type: Reel (13” diameter, 2900 parts per reel)
Dimensions: 5.45 mm x 2.70 mm (see datasheet for detailed layout)
Additional Details
RoHS compliant: Yes
ECCN: EAR99
UOM: Each
Part Number Definition: SDQ25-XXX-R (XXX indicates inductance in µH)
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{"id":10020149002557,"title":"SDQ25-330-R","handle":"sdq25-330-r","description":"\u003ch3\u003eCoupled Inductors 33µH 0.692A 0.3795Ω - Eaton Electronics\u003c\/h3\u003e\n\n\u003cp\u003eIntroducing the high-performance coupled inductor part number \u003cstrong\u003eSDQ25-330-R\u003c\/strong\u003e manufactured by Eaton Electronics, based in the Philippines. This RoHS-compliant component is designed for a variety of power conversion applications, including transformers, buck and boost circuits, and mobile device power supplies.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eDual winding shielded drum inductor\/transformer suitable for use as a single inductor or in coupled inductor\/transformer configurations with a 1:1 turns ratio\u003c\/li\u003e\n \u003cli\u003eWindings can be connected in series or parallel to achieve a broad range of inductance and current ratings\u003c\/li\u003e\n \u003cli\u003eCurrent handling capacity up to 0.692A (Irms)\u003c\/li\u003e\n \u003cli\u003eInductance value of 33µH, with a tolerance of ±20%\u003c\/li\u003e\n \u003cli\u003eFerrite shielded core for low electromagnetic interference (EMI)\u003c\/li\u003e\n \u003cli\u003e500V DC isolation between windings for safety and performance\u003c\/li\u003e\n \u003cli\u003eSuitable for applications such as SEPIC, flyback, buck, and boost converters, as well as mobile phones, laptops, digital cameras, media players, PCMCIA cards, and GPS systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003cth\u003eRated Inductance (µH)\u003c\/th\u003e\n \u003cth\u003eIrms (A)\u003c\/th\u003e\n \u003cth\u003eIsat (A)\u003c\/th\u003e\n \u003cth\u003eDCR (Ω)\u003c\/th\u003e\n \u003cth\u003eVoltage (V)\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSDQ25-330-R\u003c\/td\u003e\n \u003ctd\u003e33\u003c\/td\u003e\n \u003ctd\u003e0.692\u003c\/td\u003e\n \u003ctd\u003e0.533\u003c\/td\u003e\n \u003ctd\u003e0.3795\u003c\/td\u003e\n \u003ctd\u003e135.2\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eEnvironmental \u0026amp; Mechanical Data\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eStorage and operating temperature range: -40°C to +125°C\u003c\/li\u003e\n \u003cli\u003eSolder reflow compatible (J-STD-020 compliant)\u003c\/li\u003e\n \u003cli\u003ePackage Type: Reel (13” diameter, 2900 parts per reel)\u003c\/li\u003e\n \u003cli\u003eDimensions: 5.45 mm x 2.70 mm (see datasheet for detailed layout)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAdditional Details\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eRoHS compliant: Yes\u003c\/li\u003e\n \u003cli\u003eECCN: EAR99\u003c\/li\u003e\n \u003cli\u003eUOM: Each\u003c\/li\u003e\n \u003cli\u003ePart Number Definition: SDQ25-XXX-R (XXX indicates inductance in µH)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor detailed technical data, download the datasheet here: \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-bs\/coi-sdq25-330-r.pdf\" target=\"_blank\"\u003eSDQ25-330-R Datasheet\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003eNote: The datasheet was not processed; please search the internet for the part number SDQ25-330-R for more details.\u003c\/p\u003e","published_at":"2025-08-11T22:50:33+05:30","created_at":"2025-08-11T22:50:33+05:30","vendor":"Waldom Electonics","type":"Inductors, Chokes \u0026 Coils","tags":["692A","Chokes","Coils","Coupled","EATON-ELE","IMPORT_CSV","Inductor","LED","WLDM"],"price":26471,"price_min":26471,"price_max":26471,"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":50609129718077,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"SDQ25-330-R","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"SDQ25-330-R","public_title":null,"options":["Default Title"],"price":26471,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"SDQ25-330-R","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/SDQ25-330-R_44653687_4bd5be5f.jpg?v=1754932837"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/SDQ25-330-R_44653687_4bd5be5f.jpg?v=1754932837","options":["Title"],"media":[{"alt":null,"id":45786981728573,"position":1,"preview_image":{"aspect_ratio":1.0,"height":200,"width":200,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/SDQ25-330-R_44653687_4bd5be5f.jpg?v=1754932837"},"aspect_ratio":1.0,"height":200,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/SDQ25-330-R_44653687_4bd5be5f.jpg?v=1754932837","width":200}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eCoupled Inductors 33µH 0.692A 0.3795Ω - Eaton Electronics\u003c\/h3\u003e\n\n\u003cp\u003eIntroducing the high-performance coupled inductor part number \u003cstrong\u003eSDQ25-330-R\u003c\/strong\u003e manufactured by Eaton Electronics, based in the Philippines. This RoHS-compliant component is designed for a variety of power conversion applications, including transformers, buck and boost circuits, and mobile device power supplies.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eDual winding shielded drum inductor\/transformer suitable for use as a single inductor or in coupled inductor\/transformer configurations with a 1:1 turns ratio\u003c\/li\u003e\n \u003cli\u003eWindings can be connected in series or parallel to achieve a broad range of inductance and current ratings\u003c\/li\u003e\n \u003cli\u003eCurrent handling capacity up to 0.692A (Irms)\u003c\/li\u003e\n \u003cli\u003eInductance value of 33µH, with a tolerance of ±20%\u003c\/li\u003e\n \u003cli\u003eFerrite shielded core for low electromagnetic interference (EMI)\u003c\/li\u003e\n \u003cli\u003e500V DC isolation between windings for safety and performance\u003c\/li\u003e\n \u003cli\u003eSuitable for applications such as SEPIC, flyback, buck, and boost converters, as well as mobile phones, laptops, digital cameras, media players, PCMCIA cards, and GPS systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003cth\u003eRated Inductance (µH)\u003c\/th\u003e\n \u003cth\u003eIrms (A)\u003c\/th\u003e\n \u003cth\u003eIsat (A)\u003c\/th\u003e\n \u003cth\u003eDCR (Ω)\u003c\/th\u003e\n \u003cth\u003eVoltage (V)\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSDQ25-330-R\u003c\/td\u003e\n \u003ctd\u003e33\u003c\/td\u003e\n \u003ctd\u003e0.692\u003c\/td\u003e\n \u003ctd\u003e0.533\u003c\/td\u003e\n \u003ctd\u003e0.3795\u003c\/td\u003e\n \u003ctd\u003e135.2\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eEnvironmental \u0026amp; Mechanical Data\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eStorage and operating temperature range: -40°C to +125°C\u003c\/li\u003e\n \u003cli\u003eSolder reflow compatible (J-STD-020 compliant)\u003c\/li\u003e\n \u003cli\u003ePackage Type: Reel (13” diameter, 2900 parts per reel)\u003c\/li\u003e\n \u003cli\u003eDimensions: 5.45 mm x 2.70 mm (see datasheet for detailed layout)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAdditional Details\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eRoHS compliant: Yes\u003c\/li\u003e\n \u003cli\u003eECCN: EAR99\u003c\/li\u003e\n \u003cli\u003eUOM: Each\u003c\/li\u003e\n \u003cli\u003ePart Number Definition: SDQ25-XXX-R (XXX indicates inductance in µH)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor detailed technical data, download the datasheet here: \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-bs\/coi-sdq25-330-r.pdf\" target=\"_blank\"\u003eSDQ25-330-R Datasheet\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003eNote: The datasheet was not processed; please search the internet for the part number SDQ25-330-R for more details.\u003c\/p\u003e"}
Unfortunately I havent tested the 5G, Only difficult part was connecting antennas. But everything is good, by default it runs on Qualcom's QMI mode, Had to switch to MBIM and it works good with Windows. Planning to run with OpenWRT soon.
