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UU 9.8 Horizontal Offline Transformers Offline Flyback Transformers

UU 9.8 Horizontal Common Mode Power Line Choke

The UU series common mode chokes are compact electromagnetic components designed for AC power supplies, DC-DC converters, and telecommunication equipment. They offer high reliability and high saturation DC current, with lead-free, RoHS-compliant materials selected to meet diverse frequency requirements.

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Model:
UU9.8H
Brand:
INF

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Product Description

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This series of components delivers up to 70 dB of common-mode noise attenuation, with approximately 1% stray inductance for symmetric interference suppression and excellent winding-to-winding isolation. They meet UL 94 V-0 flammability standards and climatic category 40/125/21, with an ambient temperature limit of 50℃, dielectric strength of >1500 V between windings, and stable electrical characteristics at 25℃.

This filtering component provides excellent common-mode interference suppression with optimized structural design. It features ultra-low stray inductance, high winding isolation and reliable flame-retardant performance, meeting strict industrial environmental standards. With stable electrical characteristics, it serves as a high-performance filtering solution for miniaturized power supplies, lighting drivers and household electrical appliances.

Physical Properties

Order Code	l R(A)	L(mH)	RDC max.(Ω)	VR(V(AC))	VT(V(AC))
INF-UU9.8H-1.8mH	1	1.8	0.31	300	2500
INF-UU9.8H-3.3mH	0.8	3.3	0.51	300	2500
INF-UU9.8H-5.6mH	0.6	5.6	0.83	300	2500
INF-UU9.8H-8.2mH	0.5	8.2	1.3	300	2500
INF-UU9.8H-10mH	0.45	10	1.65	300	2500
INF-UU9.8H-12mH	0.4	12	2	300	2500
INF-UU9.8H-18mH	0.3	18	3.1	300	2500
INF-UU9.8H-25mH	0.25	25	3.6	300	2500

Technical Specifications

Typical Applications

LLC Resonant Converter Systems
High Efficiency AC-DC Power Supplies
Server Power Systems
Communication Equipment
Industrial SMPS Systems
Renewable Energy Electronics
Embedded High-Efficiency Power Modules

Customization & Procurement

Main Category	Subcategory	Details
MOQ	Prototyping & Small-batch	10 piece minimum order
	Sample Service	Free proofing & custom service, 5 free samples (shipping at buyer’s cost)
	Bulk Order	5,000 pieces and above with bulk pricing
Lead Time	All Standard Components	Shipped within 5–7 working days
	Custom Inductance / Pin Design (Sample)	Sample order confirmed within 5–7 working days
	Custom Inductance / Pin Design (Mass Order)	Shipped within 15–30 working days
Payment Terms	Main Payment Term	T/T in advance, L/C at sight
	Procurement Standard	Complies with global enterprise procurement standard for passive components
	Quality Deposit	No quality security deposit required
	Accepted Terms	FOB Shanghai / Nanjing / Hong Kong, T/T Advance
Quality Assurance	Manufacturing Defects	Free replacement for issues caused by manufacturing defects
Quality Assurance	Inspection Report	Batch inspection reports available as certification upon customer request
Packaging Specifications	Updated Packaging (2026)	Blister tray packaging; Sealed Tape & Reel for SMD products
Packaging Specifications	Optional Packaging	Vacuum sealed packaging for customers with strict moisture-proof requirements