Counterfeit and defect prevention
Visual and packaging inspection
Electrical performance verification
Service Email:
[email protected]
>
0603AF-821XJRW
Coilcraft
FIXED IND 820NH 420MA 580MOHM SM
30391 Pcs New Original In Stock
820 nH Unshielded Wirewound Inductor 420 mA 580mOhm Max 0603 (1608 Metric)
Request Quote
(Ships tomorrow)
*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (277 Ratings)
0603AF-821XJRW
Product Overview
9358268
DiGi Electronics Part Number
0603AF-821XJRW-DGManufacturer
Coilcraft
0603AF-821XJRW
Description
FIXED IND 820NH 420MA 580MOHM SMInventory
30391 Pcs New Original In Stock
820 nH Unshielded Wirewound Inductor 420 mA 580mOhm Max 0603 (1608 Metric)
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
0603AF-821XJRW Technical Specifications
Category
Fixed Inductors
Packaging
Strip
Series
0603AF
Product Status
Active
Type
Wirewound
Material - Core
Ferrite
Inductance
820 nH
Tolerance
±5%
Current Rating (Amps)
420 mA
Current - Saturation (Isat)
-
Shielding
Unshielded
DC Resistance (DCR)
580mOhm Max
Q @ Freq
16 @ 7.9MHz
Frequency - Self Resonant
325MHz
Ratings
-
Operating Temperature
-40°C ~ 85°C
Inductance Frequency - Test
7.9 MHz
Features
-
Mounting Type
Surface Mount
Package / Case
0603 (1608 Metric)
Supplier Device Package
0603
Size / Dimension
0.071" L x 0.044" W (1.80mm x 1.12mm)
Height - Seated (Max)
0.036" (0.91mm)
Datasheet & Documents
HTML Datasheet
0603AF-821XJRW-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8504.50.8000
Additional Information
Other Names
2457-0603AF-821XJE_
2457-0603AF-821XJRW
2457-0603AF-821XJEW
2457-0603AF-821XJE_-DG
2457-0603AF-821XJE_TR-DG
Standard Package
1
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Leurs prix abordables font de DiGi Electronics un choix évident pour moi, tout comme leur support après-vente exceptionnel.
Dec 02, 2025
I appreciate the transparency and honesty in their communication and service.
Dec 02, 2025
Their after-sales support is outstanding, ensuring long-term satisfaction.
Dec 02, 2025
Their support team is responsive, courteous, and very knowledgeable.
Dec 02, 2025
DiGi Electronics’ support staff is both professional and approachable.
Dec 02, 2025
Customer service representatives are attentive and provide thorough after-sales assistance.
Dec 02, 2025
The manufacturing standards are top-notch, ensuring premium products.
Publish Evalution
Evalution Message
Please enter your review message.
Please post honest comments and do not post ilegal comments.
Frequently Asked Questions (FAQ)
Can the Coilcraft 0603AF-821XJRW inductor safely handle continuous operation at 420 mA in a compact 0603 package without thermal runaway, and what PCB layout practices are critical to prevent localized heating?
While the Coilcraft 0603AF-821XJRW is rated for 420 mA RMS current, its 580 mΩ max DCR generates approximately 105 mW of power dissipation at full load, which can cause significant self-heating in the 0603 (1608 metric) footprint due to limited thermal mass. To avoid thermal runaway, ensure adequate copper pour under and around the component, use thermal vias to inner or bottom layers, and avoid placing heat-sensitive components nearby. Measure actual temperature rise in your application—especially under elevated ambient conditions—since the 85°C operating limit includes ambient plus self-heating. Derating to 70–80% of rated current is recommended for mission-critical designs.
What are the risks of replacing the Coilcraft 0603AF-821XJRW with a similarly sized 820 nH inductor like the Murata LQW18AN82NG00D, and how do their core materials and Q-factor differences impact RF performance?
Replacing the Coilcraft 0603AF-821XJRW (ferrite-core, wirewound, Q=16 @ 7.9 MHz) with the Murata LQW18AN82NG00D (also 820 nH, 0603, but multilayer ferrite) introduces subtle but critical RF performance shifts. The Murata part typically exhibits lower Q and higher parasitic capacitance, shifting its self-resonant frequency lower than the Coilcraft’s 325 MHz—potentially causing unintended attenuation or instability in tuned circuits above 50 MHz. Additionally, the Murata inductor may have different saturation behavior under transient loads. Always validate impedance and Q across your operating frequency band; for narrowband matching or filtering near 7.9–30 MHz, the Coilcraft’s higher Q and predictable wirewound structure offer superior repeatability.
How does the unshielded construction of the Coilcraft 0603AF-821XJRW affect EMI in densely populated PCBs, and what layout mitigations are necessary when placing it near sensitive analog or RF traces?
Because the Coilcraft 0603AF-821XJRW is unshielded, it emits a measurable magnetic field that can couple inductively into adjacent high-impedance traces, such as sensor inputs, local oscillators, or ADC reference lines. To minimize EMI, maintain at least 3× the component height (≈2.7 mm) spacing from sensitive nets, route critical signals orthogonally if crossing is unavoidable, and consider ground guard traces with via stitching. In mixed-signal designs, placing the inductor on the opposite side of the board with a solid ground plane in between provides effective isolation. Never place it directly over or under crystal circuits or PLL loops—even at 325 MHz SRF, near-field coupling can degrade phase noise.
Is the Coilcraft 0603AF-821XJRW suitable for use in a buck converter operating at 2 MHz with peak currents exceeding 500 mA, and what failure modes should be anticipated under such conditions?
The Coilcraft 0603AF-821XJRW is not ideal for 2 MHz buck converters with peak currents above 500 mA. Although its 420 mA RMS rating might seem sufficient for average current, the lack of specified saturation current (Isat) means inductance could drop significantly under transient peaks—leading to increased ripple, reduced efficiency, and potential control loop instability. Moreover, core losses in ferrite at 2 MHz are non-negligible and not characterized in the datasheet. For reliable operation, select a shielded power inductor with published Isat and core loss data (e.g., Coilcraft XAL4020 series). Using the 0603AF-821XJRW here risks premature aging, audible noise, or thermal degradation due to hidden core heating.
Given its MSL-1 rating, can the Coilcraft 0603AF-821XJRW be stored indefinitely without dry packing, and does this impact solder joint reliability during reflow in high-volume assembly?
Yes, the Coilcraft 0603AF-821XJRW’s MSL-1 (unlimited floor life) rating means it can be stored indefinitely at ≤30°C and ≤60% RH without requiring dry packing or bake-out before reflow. This simplifies logistics in high-volume manufacturing. However, ensure your SMT line follows standard reflow profiles (typically peak 240–250°C for Pb-free) to avoid thermal shock, as the ceramic-based ferrite core is brittle. While moisture absorption isn’t a concern, mechanical stress from rapid temperature changes during reflow can cause microcracks—especially if the PCB has high CTE mismatch. Inspect a sample batch post-reflow for hidden fractures using acoustic microscopy if deploying in automotive or industrial environments with wide thermal cycling.
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.
0603AF-821XJRW CAD Models
Coilcraft 0603AF-821XJRW PCB symbols & footprints
productDetail
