CYA1265-100UH
100 uH power inductor, DC-DC converter energy storage — SHOU HAN — C19268674 — board-b L2 (fitted), L3 (fitted) — rec-cya1265-100uh-c19268674
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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: CYA1265-100UH
Identity
| Field | Recorded value |
|---|---|
| Record ID | rec-cya1265-100uh-c19268674 |
| Record kind | standalone |
| Manufacturer part number | CYA1265-100UH |
| Manufacturer | SHOU HAN |
| Function | 100 uH power inductor, DC-DC converter energy storage |
| LCSC ID | C19268674 |
| Package | IND-SMD_L13.8-W12.8 |
| Inventory line | line-c19268674 |
| Also known as | power inductor |
Fit: Fitted
Identity state: VERIFIED
Source state: AVAILABLE
Coverage: 0 open of 2 published
Documents and package
Specification PDF
Footprint preview
IND-SMD_L13.8-W12.8. Open SVGPackage model
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This geometry represents a shared footprint package and may not exactly match the manufacturer part.
Specification PDF — CYA1265-100UH Specification For Approval (CYA1265 Series)
Selected source ID: src-cya1265-datasheet
Authority: MANUFACTURER_PRIMARY
Availability: AVAILABLE
Package footprint: IND-SMD_L13.8-W12.8
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 | L2 |
| board-b | L3 |
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-cya1265-electrical-limits · Status: COVERED
Reason: Inductance (100uH +/-20%), DC resistance (155/185 mOhm typ/max), Isat (8.5A), and Idc heat-rating current (4.5A) are all primary-source confirmed from the SHOU HAN CYA1265-101M electrical characteristics table row.
Facts in this domain:
ripple-current-margin
Coverage ID: cov-cya1265-ripple-current-margin · Status: COVERED
Reason: Computed peak-to-peak ripple current for all three board-b rails (VIN=15V, VOUT=13.5V/7.5V/-13.5V, f=150kHz) stays well under both rated limits: +13.5V rail 0.09A (1.06% Isat / 2.00% Idc), +7.5V rail 0.25A (2.94% Isat / 5.56% Idc), -13.5V inverting rail 0.474A (5.57% Isat / 10.53% Idc, the largest of the three due to the higher duty ratio of the inverting topology). All three stay far below the 8.5A Isat and 4.5A Idc ratings.
Facts in this domain:
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-cya1265-isat
Value: 8.5 · Unit: A
Conditions: saturation current: DC current causing L0 to drop approximately 30% from its 0A nominal value, TA=25C ambient reference, CYA1265-101M (100uH) row
Verdict: PASS - primary-source confirmed · Provenance: PRIMARY-SPEC
Evidence: src-cya1265-datasheet — Physical page 3, Electrical Characteristics table, row CYA1265-101M, column 'Saturation Current DC Amps. Isat'; definition per Notes, physical page 4, item 3
RECOMMENDED_OPERATION
The range the manufacturer intends the part to be used in. Always narrower than the absolute maximum.
Fact: fact-cya1265-ripple-13v5
Value: 0.09000000000000001 · Unit: A
Conditions: peak-to-peak inductor ripple current for the +13.5V LM2596S-ADJ non-inverting buck rail (L1 or L2). Computed inputs: VIN=15V (project PD-negotiated input), VOUT=13.5V (project intermediate rail target), f=150kHz (LM2596 fixed switching frequency), L=fact-cya1265-inductance (100uH nominal). Formula (standard non-inverting buck): dI = (Vin-Vout)*Vout / (Vin*L*f). Ripple is ~1.06% of the 8.5A Isat rating and ~2.00% of the 4.5A Idc heat-rating current -- ample margin. This is ripple current only, not full peak current (DC load current + ripple/2).
Verdict: PASS - primary-source confirmed · Provenance: CALCULATED
Evidence: src-cya1265-datasheet — Calculated from fact-cya1265-inductance and the project's LM2596S-ADJ buck topology for the +13.5V rail (VIN=15V, VOUT=13.5V, f=150kHz per CLAUDE.md DC-DC Stage architecture)
Fact: fact-cya1265-ripple-7v5
Value: 0.25000000000000006 · Unit: A
Conditions: peak-to-peak inductor ripple current for the +7.5V LM2596S-ADJ non-inverting buck rail. Computed inputs: VIN=15V, VOUT=7.5V, f=150kHz, L=fact-cya1265-inductance (100uH nominal). Formula (standard non-inverting buck): dI = (Vin-Vout)*Vout / (Vin*L*f). Ripple is ~2.94% of the 8.5A Isat rating and ~5.56% of the 4.5A Idc heat-rating current -- ample margin. This is ripple current only, not full peak current (DC load current + ripple/2).
Verdict: PASS - primary-source confirmed · Provenance: CALCULATED
Evidence: src-cya1265-datasheet — Calculated from fact-cya1265-inductance and the project's LM2596S-ADJ buck topology for the +7.5V rail (VIN=15V, VOUT=7.5V, f=150kHz per CLAUDE.md DC-DC Stage architecture)
Fact: fact-cya1265-ripple-neg13v5
Value: 0.4736842105263159 · Unit: A
Conditions: peak-to-peak inductor ripple current for the -13.5V LM2596S-ADJ inverting buck-boost rail (L3). Computed inputs: VIN=15V, VOUT=-13.5V (|Vout|=13.5V), f=150kHz, L=fact-cya1265-inductance (100uH nominal). Formula (standard inverting buck-boost): D=|Vout|/(Vin+|Vout|); dI = Vin*D/(L*f) = Vin*|Vout| / ((Vin+|Vout|)*L*f). Ripple is ~5.57% of the 8.5A Isat rating and ~10.53% of the 4.5A Idc heat-rating current -- still ample margin, though the largest of the three rails because the inverting topology has a higher duty ratio. This is ripple current only, not full peak current (DC load current + ripple/2).
Verdict: PASS - primary-source confirmed · Provenance: CALCULATED
Evidence: src-cya1265-datasheet — Calculated from fact-cya1265-inductance and the project's LM2596S-ADJ inverting buck-boost topology for the -13.5V rail (VIN=15V, VOUT=-13.5V, f=150kHz per CLAUDE.md DC-DC Stage architecture)
GUARANTEED_ELECTRICAL
A parameter the manufacturer guarantees over the stated conditions, usually with minimum, typical and maximum values.
Fact: fact-cya1265-inductance
Value: 100 · Unit: uH
Conditions: nominal inductance L0 at 0A DC bias, +/-20% tolerance (code M), test freq 100kHz/1.0V, CYA1265-101M row
Verdict: PASS - primary-source confirmed · Provenance: PRIMARY-SPEC
Evidence: src-cya1265-datasheet — Physical page 3, Electrical Characteristics table (CYA1265 Series), row CYA1265-101M, column L0(uH) Inductance
Fact: fact-cya1265-rdc-typ
Value: 155 · Unit: mOhm
Conditions: typical DC resistance at 25C, CYA1265-101M (100uH) row
Verdict: PASS - primary-source confirmed · Provenance: PRIMARY-SPEC
Evidence: src-cya1265-datasheet — Physical page 3, Electrical Characteristics table, row CYA1265-101M, column Rdc(mOhm) Typ.
Fact: fact-cya1265-rdc-max
Value: 185 · Unit: mOhm
Conditions: maximum DC resistance at 25C, CYA1265-101M (100uH) row
Verdict: PASS - primary-source confirmed · Provenance: PRIMARY-SPEC
Evidence: src-cya1265-datasheet — Physical page 3, Electrical Characteristics table, row CYA1265-101M, column Rdc(mOhm) Max.
THERMAL_SOA
Thermal and safe-operating-area behaviour: how much the part may dissipate, and under what mounting and ambient conditions.
Fact: fact-cya1265-idc-heat-rating
Value: 4.5 · Unit: A
Conditions: heat rating current: DC current causing an approximate temperature rise (deltaT) of 40C, TA=25C ambient reference, CYA1265-101M (100uH) row. This is the datasheet's own rated-current metric ('Idc'); it does not separately label an 'Irms' rating, and per its Notes (physical page 4, item 6) the listed rated current is whichever of Isat or Idc is lower.
Verdict: PASS - primary-source confirmed · Provenance: PRIMARY-SPEC
Evidence: src-cya1265-datasheet — Physical page 3, Electrical Characteristics table, row CYA1265-101M, column 'Heat Rating Current DC Amps. Idc'; definition per Notes, physical page 4, items 2 and 6
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-cya1265-manufacturer
Value: SHOU HAN · Unit: NONE
Conditions: exact orderable identity
Verdict: PASS - primary-source confirmed · Provenance: PRIMARY-SPEC
Evidence: src-cya1265-datasheet — Physical page 1, title block 深圳市首韩科技有限公司 / SHENZHEN SHOUHAN TECHNOLOGY CO.,LTD, and part number CYA1265-100UH
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-cya1265-ripple-13v5
Expression: (15 -
Depends on:
Fact: fact-cya1265-ripple-7v5
Expression: (15 -
Depends on:
Fact: fact-cya1265-ripple-neg13v5
Expression: 15 * 13.
Depends on:
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-cya1265-100uh-c19268674
Symbol:
CYA1265-100UHFootprint:
IND-SMD_L13.8-W12.8Pins: 2
Pin assignments
| Symbol pin | Name | Footprint pad | Function |
|---|---|---|---|
1 | 1 | 1 | terminal (unpolarized, two-terminal inductor) |
2 | 2 | 2 | terminal (unpolarized, two-terminal inductor) |
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-cya1265-ripple-margins
Records involved:
rec-cya1265-100uh-c19268674(this record)Conditions: L1/L2/L3 as the three LM2596S-ADJ DC-DC converter inductors (+13.5V, +7.5V, -13.5V rails): computed ripple current margin against the Isat/Idc ratings
Verdict: PASS - primary-source confirmed
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.
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.
CYA1265-100UH Specification For Approval (CYA1265 Series)
Source ID: src-cya1265-datasheet · Authority: MANUFACTURER_PRIMARY
| Field | Recorded value |
|---|---|
| Document number | CYA1265-100UH |
| Revision | n/a (no revision letter printed; PDF modDate 2024-12-23) |
| Document date | 2024-12-23 |
| Retrieved | 2026-08-14 |
| Printed page | not printed (physical page 3 of 5) |
Locator: Physical page 3, Electrical Characteristics table (CYA1265 Series), row CYA1265-101M
Availability: AVAILABLE
Document URL: https:
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 |
|---|---|
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. |
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. |
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. |
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.