component
QN0805X104F4250FB
Public Made by Adomby adom
QAMcn NTC Thermistors, 0805. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
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QN0805X104F4250FB
QAMcn · NTC Thermistors · 0805
QN0805X104F4250FB from QAMcn, in a 0805. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | 1 | passive | Terminal 1 of an unpolarised resistor; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised resistor; either orientation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | QAMcn |
| Package | 0805 |
| Category | Sensors |
| Pins | 2 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Zero-power resistance tolerance (F = ±1%) | R25 | -1 | 1 | % | 25℃ | 2 | |
| B constant tolerance (F = ±1%), B(25/50) | B25/50 | -1 | 1 | % | 2 | ||
| Resistance at 25℃ (R-T table, R_Min/R_Max) | R25 | 99 | 100 | 101 | kΩ | R-T table at 25℃, Res TOL. 1.00% | 11 |
| Resistance at -40℃ (R-T table, R_Min/R_Max) | R-40 | 4191.52 | 4397.12 | 4612.34 | kΩ | R-T table at -40℃, Res TOL. 4.89% | 10 |
| Resistance at 125℃ (R-T table, R_Min/R_Max) | R125 | 2.407 | 2.522 | 2.643 | kΩ | R-T table at 125℃, Res TOL. 4.79% | 13 |
| Operating ambient temperature | -40 | 125 | ℃ | Operating ambient temperature | 2 | ||
| Storage temperature | -10 | 40 | ℃ | Storage | 8 | ||
| Storage relative humidity | 75 | %RH | Storage, ≤75%RH | 8 | |||
| Resistance change after dry heat storage | ΔR25/R25 | 5 | % | 125±5℃ in air, 1000±24 h, no load; printed /ΔR25/R25/ ≤5% | 5 | ||
| B constant change after dry heat storage | ΔB/B | 2 | % | 125±5℃ in air, 1000±24 h, no load; printed /ΔB/B/ ≤2% | 5 | ||
| Resistance change after temperature cycling | ΔR25/R25 | 3 | % | 5 cycles -40℃ to 125℃, no load; printed /ΔR25/R25/ ≤3% | 5 | ||
| B constant change after temperature cycling | ΔB/B | 2 | % | 5 cycles -40℃ to 125℃, no load; printed /ΔB/B/ ≤2% | 5 | ||
| Resistance change after resistance to soldering heat | ΔR25/R25 | 5 | % | 260±5℃, 10±1 s; printed /ΔR25/R25/ ≤5% | 5 | ||
| B constant change after resistance to soldering heat | ΔB/B | 2 | % | 260±5℃, 10±1 s; printed /ΔB/B/ ≤2% | 5 | ||
| Resistance change after resistance to cold | ΔR25/R25 | 5 | % | -40±3℃ in air, 1000±24 h, no load; printed /ΔR25/R25/ ≤5% | 6 | ||
| B constant change after resistance to cold | ΔB/B | 2 | % | -40±3℃ in air, 1000±24 h, no load; printed /ΔB/B/ ≤2% | 6 | ||
| Resistance change after resistance to damp heat | ΔR25/R25 | 3 | % | 40±2℃, 90~95%RH, 1000±24 h, no load; printed /ΔR25/R25/ ≤3% | 6 | ||
| B constant change after resistance to damp heat | ΔB/B | 2 | % | 40±2℃, 90~95%RH, 1000±24 h, no load; printed /ΔB/B/ ≤2% | 6 | ||
| Resistance change after high temperature load | ΔR25/R25 | 5 | % | 85±2℃ in air, permissive operating current, 1000±48 h; printed /ΔR25/R25/ ≤5% | 6 | ||
| B constant change after high temperature load | ΔB/B | 2 | % | 85±2℃ in air, permissive operating current, 1000±48 h; printed /ΔB/B/ ≤2% | 6 | ||
| Resistance change after resistance to flexure | ΔR25/R25 | 5 | % | 0805, bend 2 mm, 10±1 s; printed /ΔR25/R25/ ≤5% | 4 | ||
| Nominal zero-power resistance | R25 | 100 | kΩ | 25℃ | 2 | ||
| Nominal B constant B(25/50) | B25/50 | 4250 | K | 25/50℃ | 2 | ||
| Nominal B constant B(25/85) | B25/85 | 4310 | K | 25/85℃ | 2 | ||
| Dissipation factor | δ | 0.14 | mW/℃ | 2 | |||
| Permissible operating current | 2 | mA | 25℃ | 2 | |||
| Rated electric power | 100 | mW | 25℃ | 2 | |||
| Thermal time constant | 5 | s | printed ＜5 s | 2 |
CAD (KiCad official)
- Symbol:
QN0805X104F4250FB - Footprint:
Resistor_SMD:R_0805_2012Metric - 3D model: 0805 (KiCad packages3D, STEP)
- 3D model files:
qn0805x104f4250fb-etched.step/qn0805x104f4250fb-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);qn0805x104f4250fb.step/qn0805x104f4250fb.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: QAMcn datasheet (13 pp, sha256
1c8bcbff66081bce, retrieved 2026-10-14, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins, primarytwo-terminal convention(convention), consensusoff(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).
# QN0805X104F4250FB
**QAMcn** · NTC Thermistors · 0805
QN0805X104F4250FB from QAMcn, in a 0805. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
## Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | 1 | passive | Terminal 1 of an unpolarised resistor; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised resistor; either orientation. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | QAMcn |
| Package | 0805 |
| Category | Sensors |
| Pins | 2 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Zero-power resistance tolerance (F = ±1%) | R25 | -1 | | 1 | % | 25℃ | 2 |
| B constant tolerance (F = ±1%), B(25/50) | B25/50 | -1 | | 1 | % | | 2 |
| Resistance at 25℃ (R-T table, R_Min/R_Max) | R25 | 99 | 100 | 101 | kΩ | R-T table at 25℃, Res TOL. 1.00% | 11 |
| Resistance at -40℃ (R-T table, R_Min/R_Max) | R-40 | 4191.52 | 4397.12 | 4612.34 | kΩ | R-T table at -40℃, Res TOL. 4.89% | 10 |
| Resistance at 125℃ (R-T table, R_Min/R_Max) | R125 | 2.407 | 2.522 | 2.643 | kΩ | R-T table at 125℃, Res TOL. 4.79% | 13 |
| Operating ambient temperature | | -40 | | 125 | ℃ | Operating ambient temperature | 2 |
| Storage temperature | | -10 | | 40 | ℃ | Storage | 8 |
| Storage relative humidity | | | | 75 | %RH | Storage, ≤75%RH | 8 |
| Resistance change after dry heat storage | ΔR25/R25 | | | 5 | % | 125±5℃ in air, 1000±24 h, no load; printed /ΔR25/R25/ ≤5% | 5 |
| B constant change after dry heat storage | ΔB/B | | | 2 | % | 125±5℃ in air, 1000±24 h, no load; printed /ΔB/B/ ≤2% | 5 |
| Resistance change after temperature cycling | ΔR25/R25 | | | 3 | % | 5 cycles -40℃ to 125℃, no load; printed /ΔR25/R25/ ≤3% | 5 |
| B constant change after temperature cycling | ΔB/B | | | 2 | % | 5 cycles -40℃ to 125℃, no load; printed /ΔB/B/ ≤2% | 5 |
| Resistance change after resistance to soldering heat | ΔR25/R25 | | | 5 | % | 260±5℃, 10±1 s; printed /ΔR25/R25/ ≤5% | 5 |
| B constant change after resistance to soldering heat | ΔB/B | | | 2 | % | 260±5℃, 10±1 s; printed /ΔB/B/ ≤2% | 5 |
| Resistance change after resistance to cold | ΔR25/R25 | | | 5 | % | -40±3℃ in air, 1000±24 h, no load; printed /ΔR25/R25/ ≤5% | 6 |
| B constant change after resistance to cold | ΔB/B | | | 2 | % | -40±3℃ in air, 1000±24 h, no load; printed /ΔB/B/ ≤2% | 6 |
| Resistance change after resistance to damp heat | ΔR25/R25 | | | 3 | % | 40±2℃, 90~95%RH, 1000±24 h, no load; printed /ΔR25/R25/ ≤3% | 6 |
| B constant change after resistance to damp heat | ΔB/B | | | 2 | % | 40±2℃, 90~95%RH, 1000±24 h, no load; printed /ΔB/B/ ≤2% | 6 |
| Resistance change after high temperature load | ΔR25/R25 | | | 5 | % | 85±2℃ in air, permissive operating current, 1000±48 h; printed /ΔR25/R25/ ≤5% | 6 |
| B constant change after high temperature load | ΔB/B | | | 2 | % | 85±2℃ in air, permissive operating current, 1000±48 h; printed /ΔB/B/ ≤2% | 6 |
| Resistance change after resistance to flexure | ΔR25/R25 | | | 5 | % | 0805, bend 2 mm, 10±1 s; printed /ΔR25/R25/ ≤5% | 4 |
| Nominal zero-power resistance | R25 | | 100 | | kΩ | 25℃ | 2 |
| Nominal B constant B(25/50) | B25/50 | | 4250 | | K | 25/50℃ | 2 |
| Nominal B constant B(25/85) | B25/85 | | 4310 | | K | 25/85℃ | 2 |
| Dissipation factor | δ | | 0.14 | | mW/℃ | | 2 |
| Permissible operating current | | | 2 | | mA | 25℃ | 2 |
| Rated electric power | | | 100 | | mW | 25℃ | 2 |
| Thermal time constant | | | | 5 | s | printed ＜5 s | 2 |
## CAD (KiCad official)
- Symbol: `QN0805X104F4250FB`
- Footprint: `Resistor_SMD:R_0805_2012Metric`
- 3D model: 0805 (KiCad packages3D, STEP)
- 3D model files: `qn0805x104f4250fb-etched.step` / `qn0805x104f4250fb-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `qn0805x104f4250fb.step` / `qn0805x104f4250fb.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [QAMcn datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588934710680961024) (13 pp, sha256 `1c8bcbff66081bce`, retrieved 2026-10-14, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `two-terminal convention` (convention), consensus `off` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).
[Datasheet PDF](docs/qn0805x104f4250fb-datasheet.pdf)