0805W8F1001T5E

1 kOhm resistor, LED current-limit — UNI-ROYAL — C17513 — board-b R7 (fitted), R8 (fitted), R9 (fitted) — rec-c17513

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: 0805W8F1001T5E

Identity

Field	Recorded value
Record ID	`rec-c17513`
Record kind	standalone
Manufacturer part number	`0805W8F1001T5E`
Manufacturer	UNI-ROYAL
Function	1 kOhm resistor, LED current-limit
LCSC ID	`C17513`
Package	`R0805`
Inventory line	`line-c17513`
Also known as	`resistor`

Fit: Fitted

Identity state: VERIFIED

Source state: AVAILABLE

Coverage: 1 open of 2 published

Documents and package

Specification PDF

UNI-ROYAL Thick Film Chip Resistors

Authority: MANUFACTURER_PRIMARY
Availability: AVAILABLE

Footprint preview

Package model

Shared footprint package: R0805. 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.

Specification PDF — UNI-ROYAL Thick Film Chip Resistors

Selected source ID: src-c17513-uniroyal

Authority: MANUFACTURER_PRIMARY

Availability: AVAILABLE

Package footprint: R0805

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	`R7`
board-b	`R8`
board-b	`R9`

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-c17513-electrical-limits · Status: COVERED

Reason: Resistance (1000 Ohm), tolerance (1%), power (0.125 W), TCR (100 ppm/C), and max voltage (150 V) are all primary-source confirmed from the UNI-ROYAL R0805 ratings tables.

Facts in this domain:

fact-c17513-manufacturer
fact-c17513-resistance
fact-c17513-tolerance
fact-c17513-power
fact-c17513-tcr
fact-c17513-voltage

pulse-energy-at-installed-waveform

Coverage ID: cov-c17513-pulse-energy · Status: OPEN

Reason: The datasheet gives only a 5-second short-time-overload test point, not an installed-waveform pulse-energy rating.

Facts in this domain:

fact-c17513-pulse-caveat

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

fact-c17513-pulse-caveat

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.

ABSOLUTE_MAXIMUM

A never-exceed limit. Reaching it may damage the part; it is not an operating target and there is no margin implied by it.

Fact: fact-c17513-voltage

Value: 150 · Unit: V

Conditions: R0805 maximum continuous working voltage; overload max 300 V

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

Evidence: src-c17513-uniroyal — Section evidence: page 5, Ratings table

RECOMMENDED_OPERATION

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

Fact: fact-c17513-power

Value: 0.125 · Unit: W

Conditions: R0805 normal-size rating, ambient at or below 70 C

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

Evidence: src-c17513-uniroyal — Section evidence: pages 2 and 4, Part No. System and Resistance Range table

Fact: fact-c17513-rcwv-squared

Value: 125 · Unit: V2

Conditions: P times R under source RCWV equation; use sqrt result and 150 V cap

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

Evidence: src-c17513-uniroyal — Section evidence: page 5, Derating Curve and RCWV equation

GUARANTEED_ELECTRICAL

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

Fact: fact-c17513-resistance

Value: 1000 · Unit: Ohm

Conditions: decoded from 0805W8F1001T5E resistance-value code

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

Evidence: src-c17513-uniroyal — Section evidence: page 2, Part No. System, resistance-value code

Fact: fact-c17513-tolerance

Value: 1 · Unit: %

Conditions: F tolerance code

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

Evidence: src-c17513-uniroyal — Section evidence: page 2, Part No. System, tolerance code

Fact: fact-c17513-tcr

Value: 100 · Unit: ppm/C

Conditions: R0805 resistance above 10 Ohm, measured from 25 C to test temperature

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

Evidence: src-c17513-uniroyal — Section evidence: page 6, Temperature Coefficient table

TRANSIENT

Behaviour during a short event — startup, a switching edge, a fault or a surge.

Fact: fact-c17513-pulse-caveat

Value: No exact installed-waveform pulse-energy rating is retained · Unit: NONE

Conditions: only 5-second short-time-overload test is specified

Verdict: NEEDS BENCH · Provenance: PRIMARY-SPEC

Evidence: src-c17513-uniroyal — Section evidence: page 6, Short-time overload row

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-c17513-manufacturer

Value: UNI-ROYAL · Unit: NONE

Conditions: exact orderable 0805W8F1001T5E

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

Evidence: src-c17513-uniroyal — Section evidence: page 2, Scope paragraph 1.1 and Part No. System

Fact: fact-c17513-topology

Value: R7, R8, R9 (1 kOhm each, 0805) are LED current-limit resistors: R7 on Net-(U6-OUT) (+12V LDO output, before PTC1) feeding LED2; R8 on Net-(U7-OUT) (+5V LDO output, before PTC2) feeding LED3; R9 on Net-(U8-OUT) (-12V LDO output, before PTC3) feeding LED4; see board-b-synth-power.md LDO-stage net tables · Unit: NONE

Conditions: current board-a-usb-pd-core.md net tables / BOM table

Verdict: NOT APPLICABLE · Provenance: REFERENCE-DESIGN

Evidence: src-c17513-boardadoc — Net tables section and BOM table rows for the cited refdes

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-c17513-rcwv-squared

Expression: fact_c17513_power * fact_c17513_resistance

Depends on:

fact-c17513-power
fact-c17513-resistance

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-c17513

Symbol: 0805W8F1001T5E
Footprint: R0805
Pins: 2

Pin assignments

Symbol pin	Name	Footprint pad	Function
`1`	`1`	`1`	terminal 1
`2`	`2`	`2`	terminal 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-c2289-r7-drive

Records involved: rec-c17513 (this record), rec-c2289
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
fact-c2289-drive-current on KT-0603YG

int-c2288-r8-drive

Records involved: rec-c17513 (this record), rec-c2288
Conditions: R8 (C17513, 1 kOhm) as the current-limit resistor for LED3 (KT-0603B) on the 5V-magnitude rail: drive current = 1.9mA
Verdict: PASS - primary-source confirmed

Facts this rests on:

fact-c17513-resistance
fact-c2288-drive-current on KT-0603B

int-c2286-r9-drive

Records involved: rec-c17513 (this record), rec-c2286
Conditions: R9 (C17513, 1 kOhm) as the current-limit resistor for LED4 (KT-0603R) on the 12V-magnitude rail: drive current = 9.9mA
Verdict: PASS - primary-source confirmed

Facts this rests on:

fact-c17513-resistance
fact-c2286-drive-current on KT-0603R

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.

UNI-ROYAL Thick Film Chip Resistors

Source ID: src-c17513-uniroyal · Authority: MANUFACTURER_PRIMARY

Field	Recorded value
Document number	SMD-SP-001
Revision	V.7
Document date	2022-10-13
Retrieved	2026-08-14
Printed page	2

Locator: Section 2, Part No. System, codes 2.1 through 2.5; page 4 Resistance Range table; page 5 Ratings/Derating table; page 6 Temperature Coefficient and Short-time overload tables

Availability: AVAILABLE

Document URL: https://www.uni-royal.cn/en/images/userfile/file/1668661899c56505e6d9ab55c7.pdf

Board A - USB-PD Core (zudo-pd design doc)

Source ID: src-c17513-boardadoc · Authority: PROJECT_GENERATOR

Field	Recorded value
Document number	board-a-usb-pd-core.md
Revision	2026-07-05
Document date	2026-07-05
Retrieved	2026-08-14
Printed page	source

Locator: Net tables section, rows for the cited net names; BOM table rows mapping refdes to LCSC ID

Availability: AVAILABLE

Document URL: https://github.com/Takazudo/zudo-pd/blob/main/doc/src/content/docs/overview/board-a-usb-pd-core.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
`ABSOLUTE_MAXIMUM`	A never-exceed limit. Reaching it may damage the part; it is not an operating target and there is no margin implied by it.
`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.
`TRANSIENT`	Behaviour during a short event — startup, a switching edge, a fault or a surge.

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.