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The suffix identifies tolerance, termination and packaging. The 12.0 A and 16.8 A entries correspond to different temperature-rise conditions, while 18.7 A uses a 30% inductance-drop threshold.
AI-assisted technical interpretation, checked against the cited PDFs. Application replacement has not been tested.
01 / PARAMETERS & CONDITIONS
Typ, min and max retain the document’s labels. A dash means no value is stated for that label; it does not mean zero.
M: ±20%; E: tin-silver (96.5/3.5) over copper; C: 7-inch machine-ready reel code
PDF p. 1Conditions — Not specified for this field in the cited pages.
Why it matters — Keep XAL4020-221MEC intact when matching a quote or sample. Other termination/reel suffixes are distinct ordering options.
Conditions — 1 MHz; 0.1 Vrms; 0 Adc; electrical specifications at 25 °C.
Why it matters — Sets the starting inductance used in ripple and control calculations. This small-signal value is not the inductance guaranteed at operating bias.
Conditions — Micro-ohmmeter; electrical specifications at 25 °C.
Why it matters — Supports a DC conduction-loss budget. Use the stated maximum for a bound at its reference temperature; it excludes AC/core loss.
Conditions — Agilent/HP 4395A or equivalent; 25 °C electrical specifications.
Why it matters — A resonance reference, not an approved converter switching frequency.
Conditions — 25 °C; 30% typical inductance decrease from zero-current value.
Why it matters — Marks a stated inductance-drop threshold. It is neither a continuous-current rating nor a no-saturation boundary.
The Isat column reports 18.7 A without a TYP label. The footnote marks the 30% inductance-decrease criterion as typical; it does not separately classify this current as TYP.
Conditions — +20 °C rise from 25 °C ambient.
Why it matters — Describes self-heating under the supplier test method. Verify total temperature on the actual PCB and current waveform.
Manufacturer marks heating ratings as reference information, not absolute maximum ratings.
Conditions — +40 °C rise from 25 °C ambient.
Why it matters — Describes self-heating under the supplier test method. Verify total temperature on the actual PCB and current waveform.
Actual PCB, traces, airflow and neighboring heat sources change the rise.
Conditions — Footnote 7 says capability is part-dependent and may be higher; no higher value is assigned here.
Why it matters — Check actual voltage stress using the manufacturer-qualified condition.
Conditions — Stated with the +40 °C-rise Irms current.
Why it matters — This is the ambient range associated with the +40 °C-rise Irms rating. Check the total component-temperature limit separately for the actual current and cooling.
Conditions — Ambient plus self-heating.
Why it matters — A material operating/storage limit, distinct from ambient temperature and from a permitted temperature rise.
Conditions — Not specified for this field in the cited pages.
Why it matters — A material operating/storage limit, distinct from ambient temperature and from a permitted temperature rise.
Conditions — Not specified for this field in the cited pages.
Why it matters — A material operating/storage limit, distinct from ambient temperature and from a permitted temperature rise.
Conditions — Not specified for this field in the cited pages.
Why it matters — Material family only; loss under a particular waveform still requires a suitable model or measurement.
AEC-Q200 qualified; RoHS compliant; halogen free declaration
PDF p. 1Conditions — Not specified for this field in the cited pages.
Why it matters — A declaration in this document. It does not qualify the finished equipment or replace a product-specific qualification report.
Conditions — Unlimited floor life at <30 °C / 85% RH per sheet.
Why it matters — Controls handling after packaging is opened, within the stated conditions.
temperature: 260; duration per reflow max: 40; reflows max: 3 °C; s; cycles
PDF p. 1Conditions — Cool to room temperature between cycles.
Why it matters — Use to review the permitted assembly thermal profile. Confirm the applicable package classification and line process; this is not an oven recipe or a completed test.
Conditions — Not specified for this field in the cited pages.
Why it matters — Consult the linked process document before selecting a cleaning process. It was not audited in this extraction.
Conditions — Not specified for this field in the cited pages.
Why it matters — Use with the original drawing for clearance, terminal overlap and assembly review. A body size does not establish PCB compatibility.
terminal width along axis: 0.82 ±0.05; terminal length: 3.25 typ; gap callout: 1.57 ±0.25 mm
PDF p. 4Conditions — Not specified for this field in the cited pages.
Why it matters — Use with the original drawing for clearance, terminal overlap and assembly review. A body size does not establish PCB compatibility.
pad width: 3.4; pad length along connection axis: 0.98; center spacing: 2.37; inner gap derived: 1.39; outer span derived: 3.35 mm
PDF p. 4Conditions — Not specified for this field in the cited pages.
Why it matters — A recommended PCB land geometry. Compare copper, mask and paste against both drawings before any replacement.
Derived gap = 2.37−0.98; outer span = 2.37+0.98. The 2.37 dimension locates pad centers.
Conditions — Not specified for this field in the cited pages.
Why it matters — Supports assembly/mechanical estimates; this is the listed range.
Manufacturer mark identifies terminal direction and the short/start lead; high-dv/dt connection is recommended there for EMI. instruction
PDF p. 4Conditions — Not specified for this field in the cited pages.
Why it matters — Evaluate mounting orientation during EMI work; do not erase it merely because an inductor has two terminals.
Conditions — Not specified for this field in the cited pages.
Why it matters — For reel/feed and assembly preparation; it is not an inventory or order-quantity promise.
Conditions — EIA-481 embossed plastic tape.
Why it matters — For reel/feed and assembly preparation; it is not an inventory or order-quantity promise.
Conditions — Not specified for this field in the cited pages.
Why it matters — For reel/feed and assembly preparation; it is not an inventory or order-quantity promise.
D is a different ordering suffix. It is not the selected MEC configuration.
Prior Coilcraft approval required by the sheet for medical or high-risk applications. condition
PDF p. 1, 2, 3, 4Conditions — Not specified for this field in the cited pages.
Why it matters — Keep the manufacturer’s stated application condition in any engineering approval workflow.
T: tin-silver-copper 95.5/4/0.5; S: tin-lead 63/37; premount extra height or dimension note mm: 0.13 composition; mm
PDF p. 1, 4Conditions — Note applies to optional T/S terminations, not the selected E suffix.
Why it matters — Prevents transfer of a nonselected termination note into MEC dimensions.
No additional curve-specific temperature or tolerance printed on this page; use the associated sheet conditions cautiously.
Illustrative trend, not a guaranteed minimum-L curve.
PDF p. 2Not specified for this field in the cited pages.
No AC/core-loss or efficiency result is calculated from these small-signal curves.
PDF p. 4Can VCMA-0420-R22-M-1A replace XAL4020-221MEC? Read the current and pad conditions first →
03 / ENGINEERING DISCUSSION
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