ALH100J-1003

10uH 10A shielded power inductor, 10mΩ DCR, 10x10mm SMD, high saturation current, low EMI

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Manufacturer Part：

ALH100J-1003

Package：

SMD 10x10mm

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Description

Product Overview

The ALH100J-1003 is a high-current shielded power inductor designed for DC-DC converter and power supply applications. This surface-mount inductor features a ferrite shielded core structure that provides excellent magnetic shielding to minimize EMI and reduce interference with nearby components on densely populated PCBs. The device offers 10uH inductance with 10A current rating, making it suitable for high-current step-down (buck) converters, step-up (boost) converters, and other power management circuits in consumer electronics, industrial systems, and automotive applications.

Key Specifications

Type Shielded Power Inductor (SMD)
Inductance 10 µH ±20% tolerance
DC Resistance (DCR) 10 mΩ typical
Rated Current (Irms) 10 A (ΔT = 40°C rise)
Saturation Current (Isat) 12 A (30% inductance drop)
Self-Resonant Frequency 15 MHz typical
Operating Temperature -40°C ~ +125°C (with self-heating)
Storage Temperature -40°C ~ +150°C
Package 10x10mm Shielded SMD
Insulation Class Class B (130°C)

Features

  • Magnetically shielded construction
  • Low DC resistance for high efficiency
  • High saturation current
  • Excellent temperature stability
  • Low acoustic noise (hum) operation
  • RoHS compliant and halogen-free
  • Suitable for reflow soldering
  • Compact 10x10mm footprint
  • High reliability ferrite core
  • AEC-Q200 qualified (automotive grade option)

Applications

  • DC-DC converters (buck, boost, buck-boost)
  • Point-of-load (POL) regulators
  • Server and data center power supplies
  • Industrial power systems
  • Automotive electronics
  • Telecom base station equipment
  • LED driver circuits
  • Battery-powered devices

The ALH100J-1003 is a shielded wirewound power inductor designed for high-current, high-efficiency DC-DC converter applications. With an inductance of 10µH and 10A rated current capability, this surface-mount device is ideal for medium-to-high power step-down and step-up converter designs. The magnetically shielded construction ensures low electromagnetic interference (EMI), making it suitable for use in noise-sensitive electronic systems and dense PCB layouts. The low DC resistance of only 10mΩ minimizes conduction losses, contributing to high overall power conversion efficiency. The ferrite core material provides high saturation current (12A at 30% inductance drop), ensuring stable inductance under high peak current conditions. The device operates over a wide temperature range of -40°C to +125°C (including self-heating effects) and is compatible with standard SMD reflow soldering processes. Its compact 10x10mm footprint offers a good balance between power handling capability and board space utilization. This inductor is suitable for a wide range of applications including server power supplies, industrial controls, automotive electronics, telecom equipment, and LED lighting systems.

The ALH100J-1003 power inductor stores energy in its magnetic field when current flows through its winding, and releases that energy when the current decreases — a fundamental property used in all switching power converters. The device is constructed with a copper wire winding around a ferrite core, enclosed in a magnetic shielding structure. When DC current flows through the inductor, it establishes a magnetic flux in the core. The inductance (10µH) determines the rate at which current can change (di/dt = V/L), which is critical for ripple current control in DC-DC converters. The shielded ferrite structure serves two purposes: first, the ferrite core provides high permeability, enabling high inductance in a compact size; second, the shielding contains the magnetic field within the device, reducing EMI radiation and preventing interference with adjacent components. As current increases, the core flux density increases until it approaches the saturation point. The saturation current rating (12A at 30% inductance drop) indicates the current level at which the core begins to saturate, causing inductance to drop. The low DC resistance (10mΩ) minimizes I²R losses and reduces temperature rise during operation. In a buck converter application, the inductor works with the output capacitor to filter the switching node voltage, providing a smooth DC output. The inductor current ramps up during the switch on-time and ramps down during the off-time, maintaining continuous current flow to the load.

Pad Number Description Notes
Pad 1 Winding Terminal 1 Start of winding (dotted terminal)
Pad 2 Winding Terminal 2 End of winding
Note: Inductor is a non-polarized passive component; electrical performance is identical regardless of mounting orientation, though dotted terminal may be marked for phase-sensitive applications.
  • Buck/boost DC-DC converter output filters
  • Point-of-load (POL) voltage regulators
  • Server motherboard power delivery
  • Industrial control power supplies
  • Automotive infotainment and ADAS systems
  • Telecom base station power modules
  • High-power LED driver circuits
  • Battery charger and management systems
Manufacturer Part Number Description
TDK SPM10040T-100M-HZ 10uH 8.5A shielded inductor, 10x10mm
Murata DFE10CC0100M=P2 10uH 11A shielded inductor, 10x10mm
Bourns SRP1040A-100M 10uH 8A shielded power inductor
Vishay IHLP5050EZER100M11 10uH 11.5A shielded inductor
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Quality Assurance

Quality is the core foundation of our long-term global cooperation. With over 20 years of experience in the electronic component industry, Materialparts has built a strict and standardized quality management system covering component sourcing, incoming inspection, full-batch testing, packaging and delivery. We are committed to delivering 100% genuine, high-reliability electronic components for industrial control, automotive electronics, consumer electronics and medical device industries, and fully safeguarding your production and R&D projects.

1. Authorized & Genuine Sourcing Promise

All of our electronic components are procured from official authorized distributors and original manufacturers. We strictly reject counterfeits, refurbished parts, disassembled components and gray-market goods. Every product is guaranteed to be brand-new original parts and fully consistent with the original technical parameters. For branded products such as NXP IC series, we maintain complete supply channel documents to realize full product traceability.

2. Strict Full-batch Quality Inspection

We implement 100% full-batch quality control for all goods before shipment. Our professional QC team conducts multi-dimensional tests including appearance inspection, electrical parameter testing, performance verification and packaging check. Each batch of components is attached with complete inspection reports and batch records. We stick to zero-tolerance standards for defective products to ensure every piece of component meets industrial application requirements.

3. Industry Standard Compliance

Our products comply with a variety of international industry quality standards to adapt to high-standard application scenarios:
  • Automotive Electronics: All automotive-grade components pass AEC-Q series certification, featuring excellent stability and durability to adapt to complex vehicle operating environments.
  • Medical Devices: High-reliability components meet medical industry safety and compliance regulations, ensuring stable operation for medical equipment.
  • Industrial Control & Consumer Electronics: Products conform to universal international electronic industry standards, suitable for long-term continuous operation of various equipment.

4. Professional Reliability Control

For static-sensitive, moisture-sensitive and precision components such as ICs, PCBs, sensors and connectors, we carry out reliability screening in advance. Combined with standardized ESD anti-static packaging and vacuum moisture-proof packaging, we avoid component damage caused by static electricity, dampness or collision during storage and transportation, and retain the original performance of products.

5. Traceability Management System

We establish a complete product traceability system. Each batch of goods corresponds to independent batch number, sourcing record, inspection record and delivery record. Customers can query the whole lifecycle information of components at any time. This system effectively solves quality risks and facilitates after-sales handling and production quality control for your company.

6. After-sales Quality Guarantee

If any product is confirmed to have non-conformity quality problems due to our reasons after receipt, we provide free return, exchange and supplementary delivery services. Our professional quality team will also conduct root cause analysis to optimize our quality control process. We respond to quality feedback within 24 hours to resolve your worries efficiently.

Contact Us

If you have inquiries about our quality standards, inspection procedures or product certification documents, please feel free to contact us:

 

Email: info@ic-vendor.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

Shipping & Payment

Materialparts is a professional global supplier of electronic components with over 20 years of industry experience. We provide one-stop supply of passive components, integrated circuits, as well as parts for industrial control, automotive electronics, consumer electronics and medical devices. Below are the unified shipping and payment policies applicable to all orders, samples and bulk purchases worldwide.

1. Payment Terms

We offer a variety of secure and convenient payment methods to meet diverse business cooperation needs. Details are as follows:
  1. Accepted Payment Methods
  • T/T (Bank Wire Transfer): The primary settlement method for bulk orders and a widely used international payment channel.
  • PayPal: Ideal for small orders, sample orders and quick payments.

  1. Settlement Currency

     

    US Dollar (USD) is the default settlement currency. RMB is available for domestic customers.

  2. Bank Charges

     

    All transfer fees, intermediary bank charges and other remittance-related expenses shall be borne by the buyer.

  3. Payment Requirements
  • Sample and small orders: Shipment will be arranged upon full payment.
  • In-stock bulk orders: Goods will be delivered within 2 to 3 working days after full payment.

2. Shipping & Delivery

We partner with leading global logistics providers to ensure safe and fast delivery worldwide. Relevant details are listed below:
  1. Logistics Partners
  • International Express: DHL, FedEx, UPS, TNT
  • Economy Logistics: Air freight and sea freight for large-volume cargo
  • Domestic Delivery: SF Express, Yunda Express
  1. Order Processing Time
  • In-stock items: Orders confirmed and fully paid before 14:00 (GMT+8) will be shipped on the same day. All other orders will be dispatched within 1 to 2 working days.
  • Out-of-stock or sourced items: The delivery lead time will be confirmed separately according to brand and inventory status.
  1. Estimated Transit Time
  • International Express: 3 – 7 working days globally
  • Air Freight: 7 – 12 working days
  • Sea Freight: 25 – 40 working days for heavy and large bulk cargo
  1. Shipping Fee Rules
  • Shipping cost is calculated based on package weight, volume, destination and delivery method.
  • Both freight prepaid and freight collect are available. Please provide your courier account number in advance if you choose freight collect.
  • Free international express delivery is offered for large orders. Terms for long-term partners can be negotiated separately.
  1. Shipment Tracking
     

    Within 24 hours after dispatch, we will send the tracking number, commercial invoice, packing list and other documents to your email or communication account. You may check the shipment status online in real time.

3. General Order Rules & Notes

  1. MOQ & Sample Service

     

    We support flexible minimum order quantities for samples, small-batch and large-batch orders. All sample orders shall comply with the above shipping and payment policies.

  2. Packaging Standard

     

    All electronic components are packed with professional anti-static and shockproof materials. Original factory packaging is available for branded chips and integrated circuits.

4. Customs & Liability Statement

  1. Import Duties & Taxes

     

    All import duties, customs clearance fees and local taxes incurred for international shipments shall be borne by the buyer. We will provide complete customs documents to assist you with clearance procedures.

  2. Handling of Lost or Damaged Goods
  • In case of loss or severe damage during transit, please contact us within 48 hours after receiving the tracking information. We will assist you in filing a claim with the logistics provider.
  • We shall not be liable for any losses caused by incorrect delivery address, wrong contact information or the buyer’s refusal to complete customs clearance.

5. Local Pickup in Shenzhen

Local pickup service is available for customers in Shenzhen and surrounding areas:
  • Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong Province, China
  • Business Hours: 09:00 – 18:00, Monday to Friday. Closed on weekends and official public holidays.
  • Notice: Please make an appointment via email or communication tools one day in advance, and present your order information upon pickup.

Contact Information

Email: info@ic-vendor.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

Core Services

1. One-stop Sourcing & BOM Support

We specialize in a full range of passive and active electronic components, including SMD resistors, power resistors, connectors, aviation connectors, LED beads, flexible circuit boards, printed circuit boards, and integrated circuits. Our professional team provides BOM list consolidation, component matching, and alternative model recommendation services. We support sample orders, small-batch trial production, and mass production orders with flexible MOQs to meet diverse procurement needs.

2. Genuine Product Guarantee & Full-process Quality Inspection

All products are sourced from official authorized channels and are 100% original genuine parts. Every batch of goods undergoes strict full-process quality inspection before delivery, with complete batch records and traceability documents provided. Our products comply with AEC-Q standards for automotive electronics and high-reliability specifications for medical devices. We eliminate counterfeits, refurbished parts and defective products from the source to secure your project production.

3. Fast Quotation & Order Processing

Our customer service team responds promptly to inquiries and quotation requests. All in-stock orders will be processed within one working day. We provide stocking reservation services for long-term cooperative customers, effectively solving problems such as component shortages and unstable supply chains.

4. Professional Technical Support

Our senior engineer team provides free technical consultation, model selection guidance and original manufacturer datasheets. We assist customers in solving problems related to product R&D, circuit design and component application, providing reliable technical support for project progress.

5. Sourcing for Special Components

Relying on our global supply chain network, we professionally source scarce components, obsolete parts and customized special components to efficiently solve your procurement difficulties.

6. Global Logistics & Document Services

We cooperate with mainstream international logistics providers including DHL, FedEx, UPS and TNT to achieve fast global delivery. We can provide complete export documents such as customs declaration files, commercial invoices and packing lists to ensure smooth customs clearance for international shipments. Local pickup is also available for customers in Shenzhen, China.

Professional Packaging Standards

Electronic components are sensitive to static electricity, collision, moisture and dust. We adopt industry-standard anti-static packaging solutions to fully ensure the integrity of goods during transportation and storage.

1. General Packaging Specifications

  • All components are packed separately to avoid damage caused by friction and collision;
  • Shockproof buffer materials are added for fragile products to ensure transportation safety;
  • Each package is clearly marked with part number, quantity, batch number and specifications for easy inventory counting and management.

2. Classified Professional Packaging

  • Anti-static Packaging: Static-sensitive components such as chips, circuit boards and sensors are packaged with anti-static bags, shielding boxes and conductive foam in strict accordance with international anti-static standards to prevent static damage.
  • Vacuum Moisture-proof Packaging: Moisture-sensitive components are vacuum-sealed with desiccants to isolate humid air, suitable for ocean transportation and long-term storage.
  • Original Factory Packaging: Integrated circuits of brands such as NXP are delivered with original reels, trays or tubes by default, retaining complete original packaging and adapting to automated SMT production lines.
  • Discrete Device Packaging: Discrete devices such as SMD resistors, power resistors and LEDs are quantitatively and classifiedly packaged with accurate quantity and clear marking.
  • Connector / Aviation Connector Packaging: Hard outer packaging is adopted to prevent pin bending and structural deformation.

3. Custom Packaging Services

We provide value-added services including personalized packaging, custom labeling and re-reeling according to customer requirements, fully matching your production and warehouse management standards.

Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@ic-vendor.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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