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UU 9.8 Vertical Common Mode Power Line Choke

The UU series common mode chokes are compact electromagnetic devices developed for AC power supplies, DC-DC converters, and telecommunication equipment, featuring both high reliability and high saturation DC current capacity.

By pairing with different lead-free, eco-friendly materials, they can meet frequency adaptation requirements across various scenarios and fully comply with RoHS environmental standards.

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Model:
UU 9.8 Vertical
Brand:
INF

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Product Description

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They meet the UL 94 V-0 flammability standard and climatic category 40/125/21, with an ambient temperature limit of 50℃, dielectric strength of >1500 V between windings, and stable electrical performance at 25℃.

Ultra-high common mode noise suppression up to 70dB, providing excellent anti-interference protection for small electronic systems

Extremely low stray inductance ratio, delivering precise and balanced attenuation for symmetrical interference signals

High-strength electrical isolation between windings, enhancing circuit safety and anti-breakdown performance

Physical Properties

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

Technical Specifications

Typical Applications

AC Input EMI Filters
Switching Power Supplies
Industrial Electronics
Consumer Electronic Devices
EMC Compliance Systems
Power Conditioning Equipment
Smart Home Systems

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