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{"title":"Iron Powder Core 5A 10A High Current Inductor For Industrial EMI Filter","imgUrl":"https:\/\/img.chinax.com\/nimg\/43\/69\/00174cef75b5094dff97c9ea38fa-200x200-1\/iron_powder_core_5a_10a_high_current_inductor_for_industrial_emi_filter.jpg","attrs":{"Certification":"UL\/ISO9001\/ISO14001\/RoHS\/Reach","Rated current":"Customisable, typical 3 A to 30 A","Model Number":"T18","Core material":"Iron powder \/ sendust \/ high flux, per order"}}
{"title":"Custom Iron Powder Core Differential Mode Inductor For Industrial EMI Filter","imgUrl":"https:\/\/img.chinax.com\/nimg\/8f\/fd\/b6194d1842e5d0da0b90665f4e64-200x200-1\/custom_iron_powder_core_differential_mode_inductor_for_industrial_emi_filter.jpg","attrs":{"Certification":"UL\/ISO9001\/ISO14001\/RoHS\/Reach","Core material":"Iron powder \/ sendust \/ high flux, per order","Model Number":"KS068125","Core type":"Toroidal powder core, distributed air gap"}}
{"title":"10uH 22uH 47uH Toroidal Differential Mode Inductor Choke Coil For DC-DC","imgUrl":"https:\/\/img.chinax.com\/nimg\/0d\/a0\/72b440642e5b2aa5c45677061df3-200x200-1\/10uh_22uh_47uh_toroidal_differential_mode_inductor_choke_coil_for_dc_dc_converter.jpg","attrs":{"Certification":"RoHS, REACH, UL recognized","Winding":"100% Pure Copper Wire","Model Number":"T8-Series \/ DM-T8","Usage":"Ripple Filtering \/ Energy Storage"}}
{"title":"High Current Industrial Differential Mode Choke Low Loss Inductor For Inverters","imgUrl":"https:\/\/img.chinax.com\/nimg\/f7\/71\/f0d8d8e62ec7ba75e8214efbef41-200x200-1\/high_current_industrial_differential_mode_choke_low_loss_inductor_for_inverters.jpg","attrs":{"Certification":"UL\/cUL Class B\/F\/H, VDE, CQC","DC Resistance (DCR Max)":"0.5 m\u03a9 - 50 m\u03a9 (Model dependent)","Model Number":"T8\/T9\/T10","Rated Current & Saturation Current (Irms \/ Isat)":"Irms: 1A - 50A Isat: 1.5 - 2 x Irms"}}
{"title":"KS25 High Stability Differential Mode Choke With Ring Terminals Reliable","imgUrl":"https:\/\/img.chinax.com\/nimg\/1c\/55\/840dff9a0147817ffc629e8895f0-200x200-1\/ks25_high_stability_differential_mode_choke_with_ring_terminals_reliable.jpg","attrs":{"Certification":"ISO9001:2015, IATF16949:2016, U\/L, ROHS, CQC, CE, cUL","Shape Type":"Terminal connection","Model Number":"KS25","Output Current":"30A - 80A"}}
{"title":"1uH-10mH T30 Toroidal Power Inductor High Current For Solar Inverter UPS EV","imgUrl":"https:\/\/img.chinax.com\/nimg\/a7\/a8\/10742ead7432b5de66d35f3591f9-200x200-1\/1uh_10mh_t30_toroidal_power_inductor_high_current_for_solar_inverter_ups_ev_charger.jpg","attrs":{"Certification":"UL Recognized Material, RoHS, REACH","Hi-Pot Test":"1500~3000VAC \/ 1 Minute (Wire to Wire)","Model Number":"T30","Minimum Order Quantity":"100pcs"}}
High Saturation T9 Toroidal Inductor 10uH 22uH 47uH 100uH Differential Choke with Pure Copper Winding for Ripple Filtering
T9 Miniature Toroidal Inductor: Precision Energy Storage and DC Filtering
Product Introduction
The T9 Differential Mode Toroidal Inductor is an ultra-compact magnetic component designed for high-efficiency energy storage and noise suppression in low-voltage DC power stages. Utilizing a standardized T9 toroidal core (approximately 9.5mm outer diameter), this series is engineered to handle significant DC bias currents while maintaining a minimal physical footprint. It serves as a critical filter to mitigate switching ripples and differential-mode noise, ensuring a clean and stable power supply for portable electronics, sensors, and miniature DC-DC converters.
Parameter
Typical Value / Spec
Core Type
T9 (Miniature Toroidal Core)
Dimensions
Approx. OD 9.53mm x ID 4.75mm x H 3.18mm
Mounting Type
Through-hole PCB Mount (Pin-type)
Coil Structure
Toroidal / Ring-type
Inductance Range
1.0 uH - 150.0 uH (Customizable)
Inductance Tolerance
+/- 20% (Typical)
Rated Current (Idc)
1.0 A - 4.0 A (Max)
Max DCR (Resistance)
10 mOhm - 250 mOhm (Depends on L)
Test Frequency
10 KHz / 100 KHz / 0.1V
Core Material
Iron Powder (e.g. -26 / -52 Mix) / Sendust
Saturation Type
Soft Saturation (Distributed Air Gap)
Operating Frequency
20 KHz - 500 KHz
Winding Wire
High-Temp Enameled Copper Wire (2UEW/3UEW)
Insulation Class
Class B (130°C) / Class F (155°C)
Operating Temp
-40°C to +125°C (Incl. Temp Rise)
Storage Temp
-25°C to +85°C
Compliance
RoHS, REACH, ISO9001
Product Features
High-Saturation Core Materials: Typically constructed with premium Iron Powder or Sendust (Kool Mu) materials, which feature a distributed air gap to ensure high saturation flux density under heavy DC loads.
Low EMI Toroidal Geometry: The closed-loop ring shape naturally contains the magnetic flux within the core, resulting in drastically lower electromagnetic radiation compared to open-frame drum or rod inductors.
Low DC Resistance (DCR): Precision-wound with 100% high-purity enameled copper wire to minimize power loss and heat generation in high-density PCB environments.
Excellent Thermal Stability: Designed to operate reliably across a broad temperature range (typically -40°C to +125°C), making it suitable for both consumer and industrial-grade electronics.
Technical FAQ 1: Why is the T9 core often wound with "Iron Powder" instead of high-permeability "Ferrite" for differential-mode applications?
Answer: This choice is driven by the need to handle DC Bias Current. High-permeability Ferrite cores saturate very quickly ("hard saturation") when DC current is applied, causing the inductance to drop to nearly zero instantly. The Iron Powder used in the T9 series has a distributed air gap within the material structure. This allows the inductor to exhibit "Soft Saturation" characteristics, where the inductance decreases gradually as current increases. This gradual drop provides a vital safety margin, preventing circuit failure during transient peak loads in buck/boost converters.
Product Applications
DC-DC Converters: Essential as an output ripple filter for high-frequency buck, boost, and SEPIC converters.
Handheld & Wearable Electronics: Ideal for smart devices and portable medical instruments requiring ultra-small magnetic solutions.
IoT & Wireless Sensors: Provides stable power filtering for low-power communication modules and remote sensors.
Automotive Sensors: Reliable EMI suppression for ADAS cameras and cabin electronics where space is extremely limited.
Technical FAQ 2: How does the specific color coding (e.g., Yellow/White or Green/Blue) of a T9 magnetic ring relate to its technical performance?
Answer: In the industry, the color coating of an iron powder core is a standard indicator of its Material Mix. For example, a Yellow/White (Mix -26) core is a general-purpose material with good saturation and cost-effectiveness, typically used up to 250kHz. A Green/Blue (Mix -52) core offers lower core losses at higher frequencies (up to 500kHz). Selecting the correct "mix" for a T9 inductor is crucial for balancing the AC Core Losses (hysteresis/eddy current) and the Saturation Current to ensure peak efficiency for the specific switching frequency of the power supply.
Product Advantages
Extreme Space Savings: The T9 geometry is one of the smallest standard toroidal sizes, allowing engineers to maximize component density on multi-layer PCBs.
Superior Signal Integrity: By containing magnetic leakage, the T9 inductor prevents cross-talk and noise interference with adjacent sensitive analog traces or digital signal lines.
Exceptional Manufacturing Consistency: Automated precision winding ensures that electrical parameters such as inductance tolerance and DCR remain perfectly uniform across large production batches.
Robust Durability: The solid-core toroidal structure is highly resistant to mechanical shock and vibration, ensuring a long maintenance-free service life in mobile applications.
Company Strengths
Chipsen Electronics Technology Co., Ltd., established in 2000, is a specialized manufacturer of high frequency transformer, low frequency transformer, toroidal inductor, SMD power inductor, super high current inductor, choke coil and switch. Chipsen has earned a strong reputation in domestic and overseas markets including North & South America, Europe and Southeast Asia.
As an ISO9001, ISO14001 & IATF16949 audited company, Chipsen possesses a professional management team committed to producing environmentally friendly and qualified products. Our products are certified by UL Class B/Class F/Class H, CQC and RoHS, and we hold 21 patents.
These achievements stem from our strong R&D team, which provides various solutions for temperature reduction, noise cancellation, and coupled radiation conductivity. Our products are widely used in various fields including new energy, PV, UPS, Robotics, smart home, security systems, health care and communication.
Our Commitment
Vision: To Be Global Transformer Brand Supplier
Mission: Create Values for Customers and Society, Grow with Customers and Staff
Chipsen Electronics - Supplier to Fortune Global 500 Companies
Magnetic Components Engineered for Performance & Reliability
Founded in 2007, Dongguan Chipsen Electronics Technology Co., Ltd. is a professional manufacturer specializing in magnetic components and micro switches.
...
Chipsen Electronics - Supplier to Fortune Global 500 Companies
Magnetic Components Engineered for Performance & Reliability
Founded in 2007, Dongguan Chipsen Electronics Technology Co., Ltd. is a professional manufacturer specializing in magnetic components and micro switches.
...
