FRC2512F33R0TS
33 Ohm LED ballast resistor — FOJAN — C2934070 — board-l R30, R31, R32, R33, R34, R35, R36, R37 — rec-c2934070
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: FRC2512F33R0TS
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-c210315, 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-c2934070Record kind: subordinate
Manufacturer part number:
FRC2512F33R0TSManufacturer: FOJAN
Function: 33 Ohm LED ballast resistor
LCSC ID:
C2934070Package:
R2512Inventory line:
line-c2934070Also known as:
Board L LED ballast resistorOwner skill:
component-honglitronic-hl-am-2835h421w-s1-08-hr3Fit: Fitted
Identity state: VERIFIED
Source state: AVAILABLE
Coverage: 1 open of 2 published
Component references
Selected document
Specification PDF
Footprint preview
R2512. Open SVGPackage 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.
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-l | R30 |
| board-l | R31 |
| board-l | R32 |
| board-l | R33 |
| board-l | R34 |
| board-l | R35 |
| board-l | R36 |
| board-l | R37 |
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-resistance-power-voltage-and-temperature
Coverage ID:
cov-c2934070-contextStatus: COVERED
Reason: fact-c2934070-manufacturer through fact-c2934070-temperature are locked to the manufacturer-primary FRC specification.
Facts in this domain:
installed-resistor-temperature-and-pulse-stress
Coverage ID:
cov-c2934070-stressStatus: OPEN
Reason: nominal calculations do not establish installed waveform, temperature, sharing or pulse stress
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.
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 | Value | Unit | Conditions | Verdict | Provenance | Evidence |
|---|---|---|---|---|---|---|
fact-c2934070-temperature | -55 to 155 C | NONE | family operating range with derating above 70 C | PASS - primary-source confirmed | PRIMARY-SPEC | src-c2934070-spec: section ratings table and derating curve |
RECOMMENDED_OPERATION
The range the manufacturer intends the part to be used in. Always narrower than the absolute maximum.
| Fact | Value | Unit | Conditions | Verdict | Provenance | Evidence |
|---|---|---|---|---|---|---|
fact-c2934070-voltage | 200 | V | 2512 package maximum working-voltage ceiling; not the exact continuous rated voltage and not an overload or dielectric-test ceiling | PASS - primary-source confirmed | PRIMARY-SPEC | src-c2934070-spec: page 3 2512 ratings row and rated-voltage note |
fact-c2934070-rcwv | 5.744562646538029 | V | exact 33 ohm, 1 W nominal rated continuous working voltage; lower than the 200 V package ceiling | PASS - primary-source confirmed | CALCULATED | src-c2934070-spec — calculated from fact-c2934070-power and fact-c2934070-resistance using the manufacturer rated-voltage note |
GUARANTEED_ELECTRICAL
A parameter the manufacturer guarantees over the stated conditions, usually with minimum, typical and maximum values.
| Fact | Value | Unit | Conditions | Verdict | Provenance | Evidence |
|---|---|---|---|---|---|---|
fact-c2934070-resistance | 33 | Ohm | 33R0 order code | PASS - primary-source confirmed | PRIMARY-SPEC | src-c2934070-spec: section ordering-code table |
fact-c2934070-tolerance | 1 | % | F tolerance code, plus/minus | PASS - primary-source confirmed | PRIMARY-SPEC | src-c2934070-spec: section ordering-code table |
fact-c2934070-tcr | 100 | ppm/C | plus/minus for 10 ohm through 10 Mohm, 2512 plus/minus 1% range | PASS - primary-source confirmed | PRIMARY-SPEC | src-c2934070-spec: page 4 resistance-range/TCR table |
THERMAL_SOA
Thermal and safe-operating-area behaviour: how much the part may dissipate, and under what mounting and ambient conditions.
| Fact | Value | Unit | Conditions | Verdict | Provenance | Evidence |
|---|---|---|---|---|---|---|
fact-c2934070-power | 1 | W | 2512 rating at 70 C; derate to zero at 155 C | PASS - primary-source confirmed | PRIMARY-SPEC | src-c2934070-spec: section 2512 ratings row and derating curve |
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 | Value | Unit | Conditions | Verdict | Provenance | Evidence |
|---|---|---|---|---|---|---|
fact-c2934070-manufacturer | FOJAN | NONE | exact order-code context from manufacturer-primary specification | PASS - primary-source confirmed | PRIMARY-SPEC | src-c2934070-spec: page 1 title block and ordering-code table |
fact-c2934070-topology | R30 through R37 each ballast one three-LED series branch; eight branches are parallel | NONE | generated Board L netlist | NOT APPLICABLE | PROJECT-CHOICE | src-c2934070-generator: section branch construction |
fact-c2934070-drop-60ma | 1.98 | V | nominal arithmetic at 60 mA; not proof of operating current | NEEDS BENCH | CALCULATED | src-c2934070-spec — calculated: 33 Ohm * 0.06 A |
fact-c2934070-power-60ma | 0.11879999999999999 | W | nominal arithmetic at 60 mA; not proof of operating current | NEEDS BENCH | CALCULATED | src-c2934070-spec — calculated: 33 Ohm * 0.06 A squared |
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 | Expression | Depends on |
|---|---|---|
fact-c2934070-rcwv | (fact_c2934070_power * fact_c2934070_resistance) ** 0.5 | fact-c2934070-power, fact-c2934070-resistance |
fact-c2934070-drop-60ma | fact_c2934070_resistance * 0.06 | fact-c2934070-resistance |
fact-c2934070-power-60ma | fact_c2934070_resistance * 0.06 * 0.06 | fact-c2934070-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-c2934070
Symbol:
FRC2512F33R0TSFootprint:
R2512Pins: 2
Pin assignments
| Symbol pin | Name | Footprint pad | Function |
|---|---|---|---|
1 | terminal-1 | 1 | passive terminal |
2 | terminal-2 | 2 | passive terminal |
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-c210315-sharing
Records involved:
rec-c210315,rec-c2934070(this record)Conditions: Eight parallel strings need driver, supply, Vf/bin, ballast tolerance, layout and thermal data to establish current sharing
Verdict: NEEDS BENCH
Facts this rests on:
fact-c210315-vf-minon HL-AM-2835H421W-S1-08-HR3fact-c210315-vf-maxon HL-AM-2835H421W-S1-08-HR3fact-c210315-topologyon HL-AM-2835H421W-S1-08-HR3
int-c2934070-stress
Records involved:
rec-c2934070(this record)Conditions: Nominal 60 mA arithmetic is illustrative only; validate actual RMS/pulse power and hot-spot temperature with derating
Verdict: NEEDS BENCH
Facts this rests on:
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-al8860-led-stage— al8860-led-stage — rule verdict: NEEDS BENCH — How the LED driver, its sense resistor, inductor, catch diode and per-branch ballast behave together across the LED forward-voltage, tolerance and temperature envelope.
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.
FOJAN FRC Thick Film Chip Resistor Specification
Source ID:
src-c2934070-specDocument number: FJ-JS-3001-V2.0
Revision: V2.0
Document date: 2025-09-24
Retrieved: 2026-08-02
Authority: MANUFACTURER_PRIMARY
Locator: Page 1 ordering-code table; page 3 2512 ratings table; page 4 temperature and TCR table
Printed page: 1
Availability: AVAILABLE
Document URL: http:
/ / www. fojan. cn/ Private/ Files/ 20260117/ 6390425653118283306794915. pdf
Board L generated schematic specification
Source ID:
src-c2934070-generatorDocument number: board-l-spec
Revision: 410bc1a342286dd6c205d6dcec0f248b8a963987
Document date: 2026-08-01
Retrieved: 2026-08-02
Authority: PROJECT_GENERATOR
Locator: Source section LED/resistor PARTS and NETS branch construction
Printed page: source
Availability: AVAILABLE
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. |
PROJECT-CHOICE | A decision made by this project. No vendor asserts it. |
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. |
THERMAL_SOA | Thermal and safe-operating-area behaviour: how much the part may dissipate, and under what mounting and ambient conditions. |
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.
Open the owning bundle component-honglitronic-hl-am-2835h421w-s1-08-hr3