component
QN0805X502F3435FA
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.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownQN0805X502F3435FA
QAMcn · NTC Thermistors · 0805
QN0805X502F3435FA 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 | Resistors |
| 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 |
|---|---|---|---|---|---|---|---|
| Resistance tolerance (code F) | R25 | -1 | 1 | % | 25℃ zero-power resistance, tolerance code F = ±1% | 3 | |
| B constant tolerance (code F), B(25/85) | B | -1 | 1 | % | B constant 3435K, tolerance code F = ±1% | 3 | |
| Operating ambient temperature | -40 | 125 | ℃ | 3 | |||
| Thermal time constant | 5 | s | Zero-power state; printed as ＜5 | 3 | |||
| Short-time applied power limit | 10 | mW | 25℃ still air, applied in short time | 5 | |||
| Resistance change, high temperature load | ΔR25/R25 | 5 | % | 85±2℃ in air, permissible operating current, 1000±48 h | 7 | ||
| B constant change, high temperature load | ΔB/B | 2 | % | 85±2℃ in air, permissible operating current, 1000±48 h | 7 | ||
| R-T table resistance at -40℃ | R | 94.837 | 98.695 | 102.7 | kΩ | R-T table, R_Min / R_Cent / R_Max at -40℃ | 12 |
| R-T table resistance at 0℃ | R | 13.449 | 13.723 | 14 | kΩ | R-T table, R_Min / R_Cent / R_Max at 0℃ | 12 |
| R-T table resistance at 25℃ | R | 4.95 | 5 | 5.05 | kΩ | R-T table, R_Min / R_Cent / R_Max at 25℃ | 13 |
| R-T table resistance at 85℃ | R | 0.706 | 0.727 | 0.749 | kΩ | R-T table, R_Min / R_Cent / R_Max at 85℃ | 14 |
| R-T table resistance at 125℃ | R | 0.256 | 0.266 | 0.277 | kΩ | R-T table, R_Min / R_Cent / R_Max at 125℃ | 15 |
| Nominal zero-power resistance (R25) | R25 | 5 | kΩ | 25℃, printed as 5±1% | 3 | ||
| B constant (25/50℃) reference | B | 3380 | K | 25/50℃, printed as ref. | 3 | ||
| B constant (25/85℃) | B | 3435 | K | 25/85℃, printed as 3435±1% | 3 | ||
| Dissipation factor | δ | 2 | mW/℃ | 3 | |||
| Permissible operating current | 0.63 | mA | 25℃ in still air | 3 | |||
| Rated electric power | 100 | mW | 25℃ ambient, still air | 3 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing | PC | The current that keep body temperature of chip NTC on the PC board in still air | 5 |
CAD (KiCad official)
- Symbol:
QN0805X502F3435FA - Footprint:
Resistor_SMD:R_0805_2012Metric - 3D model: 0805 (KiCad packages3D, STEP)
- 3D model files:
qn0805x502f3435fa-etched.step/qn0805x502f3435fa-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);qn0805x502f3435fa.step/qn0805x502f3435fa.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: QAMcn datasheet (15 pp, sha256
c79a73357559186c, retrieved 2026-10-17, 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).