KT-0603YG

0603 LED, +12V rail status indicator — Hubei KENTO Elec — C2289 — board-b LED2 (fitted) — rec-c2289

Generated from the component evidence records — edit the records, not this page.

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: KT-0603YG

Identity

Field	Recorded value
Record ID	`rec-c2289`
Record kind	standalone
Manufacturer part number	`KT-0603YG`
Manufacturer	Hubei KENTO Elec
Function	0603 LED, +12V rail status indicator
LCSC ID	`C2289`
Package	`LED0603-RD`
Inventory line	`line-c2289`
Also known as	`LED`

Fit: Fitted

Identity state: VERIFIED

Source state: AVAILABLE

Coverage: 1 open of 4 published

Documents and package

Datasheet PDF

Hubei KENTO Elec KT-0603YG 0603 LED datasheet (LCSC-hosted)

Authority: MANUFACTURER_PRIMARY
Availability: AVAILABLE

Footprint preview

Package model

Shared footprint package: LED0603-RD. Open model file

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.

Datasheet PDF — Hubei KENTO Elec KT-0603YG 0603 LED datasheet (LCSC-hosted)

Selected source ID: src-c2289-datasheet

Authority: MANUFACTURER_PRIMARY

Availability: AVAILABLE

Package footprint: LED0603-RD

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

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.

Board	Reference designator
board-b	`LED2`

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.

electrical-limits

Coverage ID: cov-c2289-electrical-limits · Status: COVERED

Reason: Forward voltage (2.0-2.2V), rated forward current (20mA), and color/wavelength are confirmed from the manufacturer datasheet, cross-checked against the LCSC product-detail page.

Facts in this domain:

fact-c2289-vf
fact-c2289-if-rated
fact-c2289-color

installed-drive-current

Coverage ID: cov-c2289-drive-current · Status: COVERED

Reason: Drive current through LED2 via R7 (1 kOhm) is calculated against the 12V rail magnitude and the datasheet Vf midpoint.

Facts in this domain:

fact-c2289-drive-current

luminous-intensity-at-installed-current

Coverage ID: cov-c2289-luminous-intensity · Status: OPEN

Reason: No manufacturer curve gives luminous intensity away from the single rated test-current point.

Facts in this domain:

fact-c2289-current-vs-test-point

Blocked by: these facts must be resolved before the domain can close. Each is listed in full under Facts.

fact-c2289-current-vs-test-point

polarity

Coverage ID: cov-c2289-polarity · Status: COVERED

Reason: Pin-1/pin-2 to anode/cathode mapping is recorded from the project's own symbol library drawing.

Facts in this domain:

fact-c2289-polarity-note

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.

Fact: fact-c2289-if-rated

Value: 20 · Unit: mA

Conditions: forward current used for the rated Vf/luminous-intensity test point

Verdict: PASS - primary-source confirmed · Provenance: PRIMARY-SPEC

Evidence: src-c2289-datasheet — Electro-Optical Characteristics table, row Forward Current

GUARANTEED_ELECTRICAL

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

Fact: fact-c2289-vf

Value: 2.0-2.2 · Unit: V

Conditions: forward voltage range at rated forward current

Verdict: PASS - primary-source confirmed · Provenance: PRIMARY-SPEC

Evidence: src-c2289-datasheet — Electro-Optical Characteristics table, row Forward Voltage

TYPICAL_CURVE

A representative figure read from a characteristic curve. Typical values are not guaranteed and vary part to part.

Fact: fact-c2289-current-vs-test-point

Value: The installed drive current (~9.9mA, calculated above) differs from the datasheet's 20mA luminous-intensity test point; no manufacturer curve or table gives luminous intensity at the installed current, only at the single rated test point. · Unit: NONE

Conditions: luminous intensity at installed (non-test-point) drive current

Verdict: NEEDS BENCH · Provenance: PRIMARY-SPEC

Evidence: src-c2289-datasheet — Electro-Optical Characteristics table (single test-point only, page 1)

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.

Fact: fact-c2289-manufacturer

Value: Hubei KENTO Elec · Unit: NONE

Conditions: exact orderable KT-0603YG

Verdict: PASS - primary-source confirmed · Provenance: PRIMARY-SPEC

Evidence: src-c2289-datasheet — Title block / manufacturer identification, LCSC product-detail page cross-check

Fact: fact-c2289-color

Value: peak wavelength 576nm (dominant range 567-573nm) · Unit: NONE

Conditions: color/wavelength

Verdict: PASS - primary-source confirmed · Provenance: PRIMARY-SPEC

Evidence: src-c2289-datasheet — Electro-Optical Characteristics table, row Wavelength

Fact: fact-c2289-drive-current

Value: 9.9 · Unit: mA

Conditions: LED2 is the yellow-green rail-status LED on the 12V-magnitude rail, in series with R7 (C17513, 1 kOhm 0805 current-limit resistor); I = (rail - Vf_mid) / R using the midpoint of the datasheet's 2.0-2.2V Vf range = 2.1V. See board-b-synth-power.md LDO-stage net tables for the R7/LED2 net.

Verdict: PASS - primary-source confirmed · Provenance: CALCULATED

Evidence: src-c2289-boardbdoc — board-b-synth-power.md, LDO-stage net table row Net-(U6-OUT) (feeds R7.1); calculated from the datasheet Vf midpoint and fact-c17513-resistance

Fact: fact-c2289-polarity-note

Value: Pin numbering matches the blue (Bluelight0603/C2288) and red (KT-0603R/C2286) LED symbols: pin1=K(cathode)/pin2=A(anode). Corrected 2026-09-21: the imported symbol previously numbered pin1=A, which the current LCSC/EasyEDA library entry for C2289 (pin 1 K on pad 1, pin 2 A on pad 2, package LED0603-RD) and the JLCPCB placement preview contradicted; Board B LED2 was turned 180 degrees with copper unchanged. · Unit: NONE

Conditions: pin-1/pin-2 to anode/cathode mapping as drawn in the project's own symbol library

Verdict: NOT APPLICABLE · Provenance: REFERENCE-DESIGN

Evidence: src-c2289-boardbdoc — symbols/zudo-pd.kicad_sym pin table of 'YLED0603YG'; LCSC/EasyEDA component C2289 symbol and LED0603-RD footprint (retrieved 2026-09-21); self-review, not a manufacturer source

Calculation dependencies

These values were derived from other recorded facts rather than read from a document. The expression and every input are published so the number can be recomputed instead of trusted. A derived value is never stronger than the weakest fact it depends on.

Fact: fact-c2289-drive-current

Expression: (12 - 2.1) / (fact_c17513_resistance / 1000)

Depends on:

fact-c17513-resistance on 0805W8F1001T5E

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-c2289

Symbol: KT-0603YG
Footprint: LED0603-RD
Pins: 2

Pin assignments

Symbol pin	Name	Footprint pad	Function
`1`	`1`	`1`	cathode
`2`	`2`	`2`	anode

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-c2289-r7-drive

Records involved: rec-c17513, rec-c2289 (this record)
Conditions: R7 (C17513, 1 kOhm) as the current-limit resistor for LED2 (KT-0603YG) on the 12V-magnitude rail: drive current = 9.9mA
Verdict: PASS - primary-source confirmed

Facts this rests on:

fact-c17513-resistance on 0805W8F1001T5E
fact-c2289-drive-current

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.

No cross-component rule names this record.

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.

Hubei KENTO Elec KT-0603YG 0603 LED datasheet (LCSC-hosted)

Source ID: src-c2289-datasheet · Authority: MANUFACTURER_PRIMARY

Field	Recorded value
Document number	KT-0603YG
Revision	retrieved via datasheet.lcsc.com, 2026-08-14
Document date	2026-08-14
Retrieved	2026-08-14
Printed page	1

Locator: Manufacturer datasheet PDF (page 1, Electro-Optical Characteristics table), hosted at LCSC's datasheet.lcsc.com PDF host

Availability: AVAILABLE

Document URL: https://datasheet.lcsc.com/datasheet/pdf/26e5131f4b051119ebc8b24acf5eb4fa.pdf

Board B - Synth Power Conversion (zudo-pd design doc)

Source ID: src-c2289-boardbdoc · Authority: PROJECT_GENERATOR

Field	Recorded value
Document number	board-b-synth-power.md
Revision	2026-07-05
Document date	2026-07-05
Retrieved	2026-08-14
Printed page	source

Locator: Net tables section (DC-DC and LDO sheets), rows for the cited net names

Availability: AVAILABLE

Document URL: https://github.com/Takazudo/zudo-pd/blob/main/doc/src/content/docs/overview/board-b-synth-power.md

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

Recorded term	What it means
`NEEDS BENCH`	Cannot be settled from documents. It needs measurement on real hardware before it can be relied on.
`NOT APPLICABLE`	The parameter does not apply to this part as it is used here.
`PASS - primary-source confirmed`	Confirmed against the manufacturer's own document for this exact part.

Provenance

Recorded term	What it means
`CALCULATED`	Derived arithmetically from other facts listed here. The expression and every input are shown, so the number can be recomputed rather than trusted.
`PRIMARY-SPEC`	Taken from the manufacturer's own specification document.
`REFERENCE-DESIGN`	Taken from a vendor reference design or application note rather than the device specification.

Fact class

Recorded term	What it means
`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.
`RECOMMENDED_OPERATION`	The range the manufacturer intends the part to be used in. Always narrower than the absolute maximum.
`TYPICAL_CURVE`	A representative figure read from a characteristic curve. Typical values are not guaranteed and vary part to part.

Coverage status

Recorded term	What it means
`COVERED`	Every question this domain asks is answered by the facts listed against it.
`OPEN`	Unresolved. Open means the question has not been answered, not that the part is unsafe — the reason states what is missing.

Source availability

Recorded term	What it means
`AVAILABLE`	The document was retrieved and is on record.

Source authority

Recorded term	What it means
`MANUFACTURER_PRIMARY`	The manufacturer's own document for this exact part.
`PROJECT_GENERATOR`	A document this project generated, such as a schematic or netlist export.

Identity state

Recorded term	What it means
`VERIFIED`	The exact orderable part has been confirmed against a source.

Source state

Recorded term	What it means
`AVAILABLE`	At least one document backing this line was retrieved.

Unit

Recorded term	What it means
`NONE`	The value is not a physical quantity, so it carries no unit. Recorded as `NONE`.

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.

No owning bundle is identified in the published model.