Counterfeit and defect prevention
Visual and packaging inspection
Electrical performance verification
Service Email:
[email protected]
>
CT0805CSF-221G
Central Technologies
SMD CER CORE WIRE-WOUND INDUCTOR
3442 Pcs New Original In Stock
220 nH Wirewound Inductor 700mOhm
Request Quote
(Ships tomorrow)
*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (469 Ratings)
CT0805CSF-221G
Product Overview
10463733
DiGi Electronics Part Number
CT0805CSF-221G-DGManufacturer
Central Technologies
CT0805CSF-221G
Description
SMD CER CORE WIRE-WOUND INDUCTORInventory
3442 Pcs New Original In Stock
220 nH Wirewound Inductor 700mOhm
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
How to Order
Shipping & Delivery
Quality Assurance
365 - Day Quality Guarantee - Every part fully backed.
90 - Day Refund or Exchange - Defective parts? No hassle.
Limited Stock, Order Now - Get reliable parts without worry.
Global Shipping & Secure Packaging
Worldwide Delivery in 3-5 Business Days
100% ESD Anti-Static Packaging
Real-Time Tracking for Every Order
Secure & Flexible Payment
Credit Card, VISA, MasterCard, PayPal, Western Union, Telegraphic Transfer(T/T) and more
All payments encrypted for security
CT0805CSF-221G Technical Specifications
Category
Fixed Inductors
Packaging
Tape & Reel (TR)
Series
ct0805csf
Product Status
Active
Type
Wirewound
Inductance
220 nH
Tolerance
±2%
DC Resistance (DCR)
700mOhm
Frequency - Self Resonant
850MHz
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Datasheet & Documents
HTML Datasheet
CT0805CSF-221G-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
Vendor Undefined
REACH Status
REACH info available upon request
Additional Information
Other Names
4161-CT0805CSF-221G
Standard Package
1
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
商品庫存充足，讓我每次購物都很愉快，真的是值得信賴的公司。
Dec 02, 2025
Envoi rapide, colis bien protégé, et support après-vente très réactif dans le suivi.
Dec 02, 2025
Leurs emballages évitent toute incident ou dommage durant le transport.
Dec 02, 2025
Their support team is always courteous and well-informed about their offerings.
Dec 02, 2025
Their website is constantly updated and very user-friendly.
Dec 02, 2025
Reliability is a top priority for me, and DiGi Electronics never disappoints in this aspect.
Dec 02, 2025
They responded rapidly to my inquiries and ensured my issue was resolved professionally.
Dec 02, 2025
The customer service team is always cheerful and eager to assist.
Dec 02, 2025
Their quality assurance process guarantees that I receive only the best.
Dec 02, 2025
Their after-sales customer engagement fosters loyalty and repeat business.
Publish Evalution
Evalution Message
Please enter your review message.
Please post honest comments and do not post ilegal comments.
Frequently Asked Questions (FAQ)
What are the key design risks when using the CT0805CSF-221G in RF matching networks near its self-resonant frequency?
When using the CT0805CSF-221G in RF matching circuits close to its 850 MHz self-resonant frequency, the inductor's impedance becomes increasingly capacitive beyond resonance, leading to unexpected detuning and reduced efficiency. To mitigate this risk, ensure your operating frequency is at least 20-30% below 850 MHz (ideally ≤ 600 MHz) to maintain stable inductive behavior. Also, account for parasitic capacitance from PCB layout, which can further lower the effective resonant frequency. Simulate impedance characteristics in your matching network and verify tuning margins to avoid performance drift in production.
How does the 700mOhm DCR of the CT0805CSF-221G impact thermal performance in high-repetition pulsed circuits?
The 700mOhm DCR of the CT0805CSF-221G can lead to significant resistive losses in high-current pulsed applications due to I²R heating. For example, at peak pulsed currents above 800 mA RMS, power dissipation exceeds 450 mW, raising junction temperature and potentially reducing long-term reliability. To mitigate thermal stress, limit average current to ≤ 600 mA, use thermal vias under the pad to dissipate heat, and verify temperature rise under actual operating waveforms. Consider derating inductance by 10–15% at elevated ambient temperatures above 85°C.
Can I replace the Coilcraft ATP-221-LS with the CT0805CSF-221G in a GPS L1 front-end filter, and what layout considerations are critical?
Yes, the CT0805CSF-221G can replace the Coilcraft ATP-221-LS in GPS L1 (1575.42 MHz) front-end filters, but with caution due to its lower self-resonant frequency (850 MHz vs. >1.8 GHz for ATP-221-LS). Since GPS L1 operates above the CT0805CSF-221G's SRF, the component behaves capacitively and is unsuitable without circuit redesign. For frequencies above SRF, consider a higher-SRF alternative like the Taiyo Yuden LQM21PN221NT00 (SRF >1.5 GHz). If redesigning for sub-800 MHz bands, maintain tight layout: minimize trace length, use ground cutouts beneath, and ensure 0.2 mm spacing from adjacent signals to reduce parasitic coupling.
What are the reliability concerns with using the CT0805CSF-221G in automotive under-hood applications given its undefined MSL rating?
The CT0805CSF-221G's undefined Moisture Sensitivity Level (MSL) poses a risk in automotive under-hood environments where thermal cycling and humidity vary drastically. Without a defined MSL, there's no guaranteed floor life or reflow survivability, increasing failure risk from popcorning or delamination during assembly or field operation. To ensure reliability, request MSL data directly from Central Technologies, store components in dry packaging below 30°C/60% RH, and perform humidity exposure testing (e.g., JESD22-A112) if used in mission-critical systems. Prefer MSL3-rated alternatives like the Würth Elektronik WE-KI 0805 series when compliance is mandatory.
How does tolerance stacking with the CT0805CSF-221G affect LC filter center frequency stability in volume production?
The ±2% inductance tolerance of the CT0805CSF-221G, when combined with typical ±5% ceramic capacitor tolerances, can cause up to ±7% variation in LC filter center frequency across production units. In narrowband filters (e.g., for ISM 915 MHz systems), this drift risks violating channel edge masks or reducing SNR. To ensure stability, use tighter-tolerance capacitors (C0G/NP0 ±1%), perform Monte Carlo tolerance analysis in simulation, and include trimmable components or calibration steps in production. For higher-volume designs, consider statistical process control (SPC) screening or switching to higher-precision inductors with tighter binning.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
CT0805CSF-221G CAD Models
Central Technologies CT0805CSF-221G PCB symbols & footprints
productDetail
