BSMD1206-150-16V

1.5A-hold PTC resettable fuse, -12V output overcurrent protection — BHFUSE — C883133 — board-b PTC3 (fitted) — rec-ptc-bsmd1206-150-16v-c883133

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: BSMD1206-150-16V

Identity

Fit: Fitted

Identity state: VERIFIED

Source state: AVAILABLE

Coverage: 2 open of 5 published

Documents and package

Datasheet PDF

BSMD1206 Series Surface Mount PTC Device

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.

Datasheet PDF — BSMD1206 Series Surface Mount PTC Device

Selected source ID: src-ptc3-bsmd1206-datasheet

Authority: MANUFACTURER_PRIMARY

Availability: AVAILABLE

Package footprint: F1206

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-ptc3-electrical-limits · Status: COVERED

Reason: Ihold (1.50A), Itrip (3.00A), Vmax (16 Vdc), Imax (40A), Pd typ (1.0W), time-to-trip (0.30s at 8.00A), Rmin (0.025 ohm), and R1max (0.130 ohm) are all primary-source confirmed from the BHFUSE BSMD1206 Series Electrical Characteristics (25C) table, row BSMD1206-150-16V.

Facts in this domain:

• fact-ptc3-ihold

• fact-ptc3-itrip

• fact-ptc3-vmax

• fact-ptc3-imax

• fact-ptc3-pd-typ

• fact-ptc3-time-to-trip

• fact-ptc3-rimin

• fact-ptc3-r1max

ambient-derating-and-cycling

Coverage ID: cov-ptc3-thermal · Status: COVERED

Reason: Ambient operating range (-40 to +85C), maximum tripped-state surface temperature (125C), 85C-ambient derated hold current (0.77A), and qualitative aging/thermal-shock/repeated-trip resistance-change data are all primary-source confirmed from the same datasheet's Environmental Specifications and Thermal Derating Chart tables.

Facts in this domain:

• fact-ptc3-temperature

• fact-ptc3-surface-temperature

• fact-ptc3-hold-85c

• fact-ptc3-cycling

neg12v-rail-application

Coverage ID: cov-ptc3-rail-application · Status: COVERED

Reason: Ihold leaves a 0.7A margin above the -12V/0.8A rail current budget magnitude and Vmax leaves a 4V margin above the 12V nominal rail voltage magnitude; both are positive but the voltage margin (33% headroom) is the tightest of board-b's three PTCs and does not account for switching-rail ripple or transients upstream of the LDO.

Facts in this domain:

• fact-ptc3-ihold-margin

• fact-ptc3-vmax-margin

fault-current-ambient-and-cycling

Coverage ID: cov-ptc3-fault · Status: OPEN

Reason: No board-b generator spec exists yet to bound upstream fault current/energy at PTC3, in-enclosure ambient temperature, local heat sources, expected trip count over product life, or the cooling interval between faults.

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-c883133-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-c883133-model-bounds

• fact-c883133-model-transform

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

• fact-c883133-model-bounds

• fact-c883133-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.

RECOMMENDED_OPERATION

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

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.

THERMAL_SOA

Thermal and safe-operating-area behaviour: how much the part may dissipate, and under what mounting and ambient conditions.

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-ptc3-ihold-margin

Expression: fact_ptc3_ihold - 0.8

Depends on:

• fact-ptc3-ihold

Fact: fact-ptc3-vmax-margin

Expression: fact_ptc3_vmax - 12

Depends on:

• fact-ptc3-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-ptc3-bsmd1206-150-16v-c883133

• Symbol: BSMD1206-150-16V

• Footprint: F1206

• 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-ptc3-neg12v-rail-protection

• Records involved: rec-ptc-bsmd1206-150-16v-c883133 (this record)

• Conditions: PTC3 as the board-b -12V output overcurrent-protection PPTC, downstream of U8 (CJ7912 -12V LDO): current-hold margin against the -12V/0.8A rail budget magnitude is +0.7A and the voltage margin against the 12V nominal rail magnitude is +4V (33% headroom) -- positive but the tightest of board-b's three PTCs.

• Verdict: PASS - primary-source confirmed

Facts this rests on:

• fact-ptc3-ihold

• fact-ptc3-vmax

• fact-ptc3-ihold-margin

• fact-ptc3-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.

BSMD1206 Series Surface Mount PTC Device

Source ID: src-ptc3-bsmd1206-datasheet · Authority: MANUFACTURER_PRIMARY

Locator: Page 1 title block (BHFUSE / 佰宏保险丝 logo, sales@bhfuse.com, www.bhfuse.com, 'Revision 2025' printed in every page footer) and Page 2 Electrical Characteristics (25C) table, row BSMD1206-150-16V; no separate document/revision code beyond the printed 'Revision 2025' is given anywhere in the file

Availability: AVAILABLE

Document URL: https://datasheet.lcsc.com/datasheet/pdf/536516336d784fb8e1d4d3f7dabf668c.pdf?productCode=C883133

C883133 exact catalog model visibility and datum review

Source ID: src-c883133-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.