CL21A226MAQNNNE

22 uF 25 V buck output MLCC — Samsung Electro-Mechanics — C45783 — board-l C16, C17 — rec-cl21a226maqnnne

Everything below is projected from this project's stored component evidence. Values keep the exact wording, conditions, units and verdicts they were recorded with — nothing here is re-typed, corrected, or combined into an overall judgement about the part.

This record in the catalog: CL21A226MAQNNNE

Subordinate record

This is a subordinate record. It is a component in its own right, with its own orderable identity and its own placements, but its evidence is audited as part of rec-ap63203wu-7, because its behaviour is only meaningful in that part's circuit. Read the parent record for the shared context; the facts below are the ones specific to this line.

Identity

• Record ID: rec-cl21a226maqnnne

• Record kind: subordinate

• Manufacturer part number: CL21A226MAQNNNE

• Manufacturer: Samsung Electro-Mechanics

• Function: 22 uF 25 V buck output MLCC

• LCSC ID: C45783

• Package: C0805

• Inventory line: line-c45783

• Also known as: AP63203 output capacitor

• Owner skill: component-ap63203wu-7

• Fit: Fitted

• Identity state: UNRESOLVED

• Source state: SOURCE UNAVAILABLE

• Coverage: 1 open of 2 published

Component references

Selected document

Specification PDF

Samsung CL21A226MAQNNNE Specification Reference Sheet and MLCC Product Manual

Authority

MANUFACTURER_PRIMARY

Availability

AVAILABLE

Footprint preview

Footprint preview for C0805

Package model

Interactive inspection requires JavaScript and WebGL. The package identity remains available in this page.

This geometry represents a shared footprint package and may not exactly match the manufacturer part.

Interactive 3D view of shared footprint package C0805

Placements

Every position this exact line occupies in the as-built design. One line may be placed many times and across more than one board.

Coverage

Coverage is stated one domain at a time and is never rolled up. A domain marked open is a question that has not been answered; it is not a finding that the part is unsuitable. A record with no open domains has not thereby been declared safe.

identity-capacitance-voltage-temperature-package

• Coverage ID: cov-cl21-spec

• Status: COVERED

Reason: fact-cl21-manufacturer through fact-cl21-package

Facts in this domain:

• fact-cl21-manufacturer

• fact-cl21-capacitance

• fact-cl21-tolerance

• fact-cl21-voltage

• fact-cl21-dielectric

• fact-cl21-temperature

• fact-cl21-package

guaranteed-effective-capacitance

• Coverage ID: cov-cl21-bias

• Status: OPEN

Reason: The locked Samsung PDF requires evaluation of Class II capacitance under DC voltage but does not provide an exact 3.3 V curve or a guaranteed minimum including tolerance, temperature, aging, and lot spread.

Facts in this domain: none are recorded against it.

Blocked by: no blocking fact is recorded. What is missing has not been reduced to a specific recorded fact, so the reason above is the whole of what is known.

Facts

Each fact keeps its value, its unit, the conditions it holds under, where it came from and how far it has been confirmed as separate fields, because they are separate claims. A value without its conditions is not the same fact, and a verdict is about the evidence for the value, not about the part.

RECOMMENDED_OPERATION

The range the manufacturer intends the part to be used in. Always narrower than the absolute maximum.

GUARANTEED_ELECTRICAL

A parameter the manufacturer guarantees over the stated conditions, usually with minimum, typical and maximum values.

PROJECT_STATE

A value this project recorded about how the part is used here — a chosen operating point, a net assignment, or a derived figure. Not a manufacturer specification.

Pin maps

The mapping between schematic pins and PCB pads, or physical terminals for an external part, as recorded. A record may carry more than one map when the same part is documented in more than one context.

pinmap-cl21a226

• Symbol: CL21A226MAQNNNE

• Footprint: C0805

• Pins: 2

Interactions

Behaviour that is not a property of this part alone. Each interaction names the records it spans, the conditions it holds under, and how far it has been confirmed. An interaction that spans several parts appears on every one of their pages, under the same identifier, because it is equally a fact about each.

int-ap63203-power-stage

• Records involved: rec-ap63203wu-7, rec-fnr4030s4r7mt, rec-cl21a226maqnnne (this record)

• Conditions: full input/load/temperature envelope and PCB layout; nominal capacitance cannot establish guaranteed stability

• Verdict: NEEDS BENCH

Facts this rests on:

• fact-ap63203-required-inductor-current on AP63203WU-7

• fact-ap63203-reference-l on AP63203WU-7

• fact-ap63203-reference-cap on AP63203WU-7

• fact-fnr-isat-margin on FNR4030S4R7MT

• fact-fnr-irated-margin on FNR4030S4R7MT

• fact-cl21-effective-capacitance-status

int-cl21-output-filter

• Records involved: rec-cl21a226maqnnne (this record)

• Conditions: 3.3 V DC bias plus tolerance, temperature, aging, and transient requirement

• Verdict: NEEDS BENCH

Facts this rests on:

• fact-cl21-dc-bias

• fact-cl21-project-count

• fact-cl21-project-nets

• fact-cl21-effective-capacitance-status

Cross-component rules

Rules that span several parts at once and are published in full on the integration page. Each rule's verdict below is that rule's own — it is a statement about the cross-component question, not about this part — and the exact wording of what the rule refuses to conclude is published with the rule itself.

• rule-rail-envelope — rail-envelope — rule verdict: UNSOURCED — Whether every part on the input rail stays inside its own recorded limits across a legal power contract, a mis-contract, and a transient clamp event.

• rule-ap63203-logic-stage — ap63203-logic-stage — rule verdict: UNSOURCED — How the logic-rail converter, its inductor and its output capacitor behave together under the real load the microcontroller presents.

All cross-component rules

Sources

Every document cited above, with its identification, when it was retrieved, and what kind of authority it carries. Sources that could not be retrieved are listed too, with their unavailability stated, so a gap in the evidence is visible rather than absent.

Samsung CL21A226MAQNNNE Specification Reference Sheet and MLCC Product Manual

• Source ID: src-samsung-cl21-product

• Document number: CL21A226MAQNNNE

• Revision: not stated

• Document date: 2024-05-09

• Retrieved: 2026-08-02

• Authority: MANUFACTURER_PRIMARY

• Locator: Reference Sheet page 1 exact-part characteristics and dimensions; Product Manual sections 2-1-3 and 2-7 Class II capacitance-change guidance

• Printed page: Reference Sheet page 1

• Availability: AVAILABLE

• Document URL: https://product.samsungsem.com/part/download.do?masterKey=CL21A226MAQNNN\&type=specsheet

Board L generated schematic specification

• Source ID: src-cl21-generator

• Document number: scripts/schgen/board_l_spec.py

• Revision: 410bc1a342286dd6c205d6dcec0f248b8a963987

• Document date: 2026-08-02

• Retrieved: 2026-08-02

• Authority: PROJECT_GENERATOR

• Locator: COMPONENTS table rows C16/C17 and NETS rows V3P3 and GND

• Printed page: source file

• Availability: AVAILABLE

• Document URL: https://raw.githubusercontent.com/Takazudo/zudo-led-lamp/410bc1a342286dd6c205d6dcec0f248b8a963987/scripts/schgen/board\_l\_spec.py

Legend

What the recorded terms on this page mean, in ordinary words. The exact terms above are the ones that count; these descriptions explain them and never replace them.

Verdict

Provenance

Fact class

Coverage status

Source availability

Source authority

Identity state

Source state

Unit

Raw agent resource

This page is generated from a stored evidence bundle and does not restate it. The bundle is the source of truth: where the two ever disagree, the bundle is right and this page is stale.

Open the owning bundle component-ap63203wu-7