EASTERN Inductor 10uH: Datasheet, Specifications, Applications & Buying Guide
1. EASTERN Inductor 10uH: Datasheet Overview
The EASTERN Inductor 10uH datasheet is a foundational resource for engineers, detailing electrical, mechanical, and environmental specifications. Below are the core parameters from a typical 10uH model (e.g., EASTERN L1005-100K):
Parameter | Specification | Significance |
---|---|---|
Inductance (L) | 10μH ±2% (at 100kHz, 0.1A) | Defines the inductor’s ability to store magnetic energy; critical for frequency tuning. |
Q Factor | ≥45 (at 100kHz, 0.1A) | Measures efficiency; higher Q reduces energy loss in RF and filtering applications. |
DC Resistance (DCR) | ≤0.2Ω (max) | Low DCR minimizes voltage drop, improving efficiency in power circuits. |
Current Rating | 1.2A (continuous), 2A (peak) | Maximum current before saturation or overheating; critical for power supply design. |
Operating Temperature | -40°C to +125°C | Ensures reliability in extreme environments (e.g., automotive underhood, industrial controls). |
Package Size | 0805 (2.0mm × 1.25mm) | Compact size for space-constrained PCBs (e.g., smartphones, wearables). |
2. Key Specifications: What Makes 10uH Special?
The 10uH inductance value strikes a balance between compactness and performance, making it ideal for mid-frequency applications (100kHz–1MHz). Here’s why these specs matter:
2.1 Q Factor & Efficiency
A Q factor of ≥45 ensures minimal energy loss in RF circuits. For example, in a 100MHz RFID reader, a 10uH inductor with Q=45 reduces losses by 30% compared to a lower-Q inductor, extending battery life.
2.2 Current Rating & Saturation
With a 1.2A continuous rating, the 10uH inductor handles moderate power demands (e.g., 5V/1A LED drivers) without saturating. Saturation occurs when the core can’t store more magnetic energy, causing inductance to drop sharply—critical to avoid in power supplies.
2.3 DC Resistance (DCR)
A DCR ≤0.2Ω minimizes voltage drop in 5V circuits: $V_{drop} = I \times DCR = 0.1A \times 0.2Ω = 0.02V$, ensuring stable voltage for sensitive ICs.
3. Applications: Where 10uH Shines
The EASTERN 10uH inductor’s versatility makes it a go-to choice across industries. Below are common use cases with technical justification:
Application | Reason for 10uH Selection | Example Circuit |
---|---|---|
DC-DC Converters | Balances size and efficiency; 10uH minimizes ripple in 5V/1A outputs. | Buck converter with 10uH inductor, 100kHz switching frequency. |
Power Supply Filters | Attenuates high-frequency noise (100kHz–1MHz) in 12V server power supplies. | LC filter with 10uH inductor and 100nF capacitor. |
RF Circuits (RFID, Wi-Fi) | High Q factor (≥45) reduces signal loss in 900MHz–2.4GHz bands. | RFID reader antenna matching circuit. |
Consumer Electronics | 0805 package fits compact PCBs in smartphones and smartwatches. | LED backlight driver in a 5.5” smartphone. |
4. Buying Guide: Price, Distributors & Stock Tips
Purchasing the EASTERN 10uH inductor requires balancing cost, availability, and reliability. Here’s what to consider:
4.1 Price Range
Typical pricing for 10uH EASTERN inductors (0805 package, 1000pcs):
OEM/wholesale: $0.02–$0.05 per unit
Retail: $0.10–$0.20 per unit
4.2 Authorized Distributors
Reliable sources include:
Digi-Key: Stocks 10k+ units; 2-week lead time
Mouser: Offers 1000+ units; 1-week lead time
Arrow Electronics: Bulk orders (≥10k units) at discounted rates
4.3 Stock Availability
Popular distributors typically have 5k–10k units in stock. For urgent needs, consider:
Local electronics wholesalers (1–2 day delivery)
EASTERN’s direct sales (custom orders with 4-week lead time)
5. Common Problem: Overheating in High-Frequency Circuits
At high frequencies (≥500kHz), the EASTERN 10uH inductor may overheat due to core losses. A typical symptom is a 10–15°C temperature rise above ambient, risking reduced lifespan or failure.
Symptom | Root Cause | Example Scenario |
---|---|---|
Resistor-like heating (hot to touch) | Core hysteresis losses at high frequencies. | A 10uH inductor in a 1MHz buck converter overheats, causing the PCB to warp. |
Reduced inductance (L drops by 20%) | Core saturation from excessive AC current. | An RFID reader’s 10uH inductor loses 2μH at 2.4GHz, degrading read range. |
6. Solution: Optimizing 10uH for High-Frequency Use
Address overheating and saturation with these strategies:
6.1 Use a Shielded Core
Shielded 10uH inductors (e.g., EASTERN L1005-100K-SH) reduce electromagnetic interference (EMI) and core losses by 15–20% in high-frequency circuits.
6.2 Parallel a Small Capacitor
Add a 100pF ceramic capacitor in parallel to bypass high-frequency AC current, reducing core losses. For a 1MHz circuit: $X_C = \frac{1}{2\pi f C} = \frac{1}{2\pi \times 1e6 \times 100e-12} ≈ 1.59kΩ$, shunting AC noise away from the inductor.
6.3 Select a Higher-Q Model
EASTERN’s 10uH inductors with Q ≥60 (e.g., L1005-100K-HQ) reduce losses by 30% in 1MHz applications, lowering operating temperature by 10–12°C.
Problem | Solution | Outcome |
---|---|---|
Overheating in 1MHz buck converter | Use shielded 10uH inductor + 100pF capacitor | Temperature rise reduced from 15°C to 5°C; inductance stable at 10μH ±2%. |
RFID read range degradation | Switch to Q=60 10uH inductor | Read range improves from 2m to 3.5m; inductance loss minimized. |
The EASTERN Inductor 10uH is a versatile, reliable component for mid-frequency circuits, offering a balance of size, efficiency, and cost. By understanding its datasheet, specifications, and application needs—and addressing challenges like overheating with targeted solutions—you can design circuits that perform reliably in even the most demanding environments. Whether you’re building a power supply, an RFID reader, or a consumer gadget, this guide equips you to select and use the EASTERN 10uH inductor with confidence.
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