mSMD110-33V

1.1A-hold PTC resettable fuse, +5V output overcurrent protection — TECHFUSE — C70119 — board-b PTC2 (fitted) — rec-ptc-msmd110-33v-c70119

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: mSMD110-33V

Identity

Fit: Fitted

Identity state: VERIFIED

Source state: AVAILABLE

Coverage: 2 open of 4 published

Documents and package

Specification PDF

mSMD110-33V Techfuse PTC Devices Resettable Fuse Specification Sheet

Authority

MANUFACTURER_PRIMARY

Availability

AVAILABLE

Footprint preview

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.

Specification PDF — mSMD110-33V Techfuse PTC Devices Resettable Fuse Specification Sheet

Selected source ID: src-ptc2-msmd110-datasheet

Authority: MANUFACTURER_PRIMARY

Availability: AVAILABLE

Package footprint: F1812

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.

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-ptc2-electrical-limits · Status: COVERED

Reason: Ihold (1.10A), Itrip (2.20A), Vmax (33.0V), Imax (100A), Pd typ (0.8W), time-to-trip (0.30s at 8.0A), Rimin (0.050 ohm), and R1max (0.250 ohm) are all primary-source confirmed from the Techfuse Table II. Performance Ratings, row mSMD110-33V.

Facts in this domain:

• fact-ptc2-ihold

• fact-ptc2-itrip

• fact-ptc2-vmax

• fact-ptc2-imax

• fact-ptc2-pd-typ

• fact-ptc2-time-to-trip

• fact-ptc2-rimin

• fact-ptc2-r1max

5v-rail-application

Coverage ID: cov-ptc2-rail-application · Status: COVERED

Reason: Ihold leaves a 0.6A margin above the +5V/0.5A rail current budget and Vmax leaves a 28V margin above the +5V nominal rail voltage; both margins are large and healthy, so PTC2 passes its rail-application check without qualification.

Facts in this domain:

• fact-ptc2-ihold-margin

• fact-ptc2-vmax-margin

ambient-derating-fault-current-and-cycling

Coverage ID: cov-ptc2-fault · Status: OPEN

Reason: The single-page Techfuse specification sheet does not tabulate ambient-temperature-derated hold current or environmental/aging test data (unlike the RUILON and BHFUSE datasheets for PTC1/PTC3), and no board-b generator spec exists yet to bound upstream fault current/energy, in-enclosure ambient, or trip-cycling history at PTC2.

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.

illustrative model datum and physical package clearance

Coverage ID: cov-c70119-model-geometry · Status: OPEN

Reason: Exact catalog asset, visibility and pad registration checked; manufacturer maximum-tolerance geometry and physical assembly fit remain unqualified.

Facts in this domain:

• fact-c70119-model-bounds

• fact-c70119-model-transform

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

• fact-c70119-model-bounds

• fact-c70119-model-transform

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.

GUARANTEED_ELECTRICAL

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

TYPICAL_CURVE

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

TRANSIENT

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

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.

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-ptc2-ihold-margin

Expression: fact_ptc2_ihold - 0.5

Depends on:

• fact-ptc2-ihold

Fact: fact-ptc2-vmax-margin

Expression: fact_ptc2_vmax - 5

Depends on:

• fact-ptc2-vmax

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-ptc2-msmd110-33v-c70119

• Symbol: mSMD110-33V

• Footprint: F1812

• 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-ptc2-5v-rail-protection

• Records involved: rec-ptc-msmd110-33v-c70119 (this record)

• Conditions: PTC2 as the board-b +5V output overcurrent-protection PPTC, downstream of U7 (L7805ABD2T +5V LDO): current-hold margin against the +5V/0.5A rail budget is +0.6A and the voltage margin against the +5V nominal rail is +28V, both comfortably positive.

• Verdict: PASS - primary-source confirmed

Facts this rests on:

• fact-ptc2-ihold

• fact-ptc2-vmax

• fact-ptc2-ihold-margin

• fact-ptc2-vmax-margin

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-pptc-vmax-vs-rail — pptc-vmax-vs-rail — rule verdict: NEEDS BENCH

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.

mSMD110-33V Techfuse PTC Devices Resettable Fuse Specification Sheet

Source ID: src-ptc2-msmd110-datasheet · Authority: MANUFACTURER_PRIMARY

Locator: Page 1 (only page) title block (SEA&LAND ELECTRONIC CORP., Taiwan; brand line 'Techfuse PTC Devices Resettable Fuse'; DOCUMENT QR0429, REV DATE 2021-4-30) and Table II. Performance Ratings, row mSMD110-33V

Availability: AVAILABLE

Document URL: https://datasheet.lcsc.com/datasheet/pdf/83a52b00a3fb00da0260c29eb7f73d7d.pdf?productCode=C70119

C70119 exact catalog model visibility and datum review

Source ID: src-c70119-model-review · Authority: PROJECT_GENERATOR

Locator: section: fresh exact-LCSC model bounds, opacity, footprint offset and retained STEP datum

Availability: AVAILABLE

Document URL: no link is published for this source

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.

No owning bundle is identified in the published model.