MLX90614ESF-BCI-000-TU - 3 V Digital IR Thermometer, 5 deg FOV
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Melexis MLX90614ESF-BCI-000-TU: factory-calibrated non-contact infrared thermometer, 3 V supply, 5 degree field of view (long collimator cap), gradient compensated, SMBus and PWM output, TO-39 4-lead can.
3D Model
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Contents
- Key specifications
- Pinout
- Ordering variants
- Sourcing
- CAD
- 3D models
- Why the model is built from the datasheet
- Model proof: overlay on the datasheet drawing
- Pin 1
- Detail levels for board and digital-twin viewers
- Design notes from the datasheet
- Manufacturer and resources
- Symbol chip outline
- Cited datasheet pages
- Provenance and license
README
markdownMLX90614ESF-BCI-000-TU
Melexis · Digital infrared thermometer, 3 V, 5 degree field of view · TO-39 4-lead can
The MLX90614ESF-BCI-000-TU is a factory-calibrated non-contact infrared thermometer. A thermopile detector and a signal-conditioning ASSP share one TO-39 can, and the part reports object and ambient temperature over an SMBus-compatible two-wire interface or as a PWM output (datasheet Rev 021 p.1). The ordering code breaks down as E (-40 to 85 °C), SF (TO-39), B (3 V supply), C (thermal gradient compensated), I (5 degree field of view), 000 (standard), TU (tube) (p.2, p.50). The 5 degree version has a tall collimator cap: 20.20 mm from the top of the cap to the bottom of the header (p.49).
Key specifications
| Parameter | Value | Source |
|---|---|---|
| Supply voltage | 2.6 to 3.6 V (3.0 V typical) | p.9 Table 6 |
| Supply voltage, absolute maximum | 5 V (< 24 h) | p.7 Table 3 |
| Supply current | 1.3 mA typical, 2.5 mA max | p.9 Table 7 |
| Sleep current | 2 uA typical, 6 uA max | p.9 Table 7 |
| Operating temperature (E) | -40 to 85 °C | p.7 Table 3 |
| Object temperature range | -70 to 380 °C | p.1 |
| Accuracy | 0.5 °C from 0 to 50 °C (Ta and To) | p.1 |
| Resolution | 0.02 °C (SMBus) | p.1, p.9 Table 7 |
| Field of view (50 percent points) | 5 degrees | p.37 Table 19, p.40 Figure 33 |
| Interface | SMBus compatible, 10 to 100 kHz, default address 0x5A; or 10-bit PWM | p.9 Table 7 |
| Power-up default | SMBus | p.1 |
| Output valid after power-on | 250 ms typical | p.9 Table 7 |
| Package | TO-39 4-lead can, MLX90614xCI collimator cap: 9.00 mm cap, 9.15 mm header, 20.20 mm tall, 13.00 mm leads | p.49 Figure 45 |
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | SCL | input | SMBus serial clock. The 5.7 V zener (Vz) on this pin exists on the 5 V Axx versions only, not on this 3 V part |
| 2 | SDA/PWM | bidirectional | SMBus serial data, or the PWM output when configured |
| 3 | VDD | power | External supply |
| 4 | VSS | power | Negative supply (ground) |
Source: p.6 Table 2 and Figure 1 (bottom view: tab up, pin 1 upper right, then 2, 3, 4 clockwise). The footprint shows the same pins from the top, which is the bottom view mirrored: pad 1 (the oval pad) left, 2 bottom, 3 right, 4 top, with the tab between pins 1 and 4.
Ordering variants
The MLX90614 is sold in many combinations of temperature range (E, K), supply and accuracy (A 5 V, B 3 V, D 3 V medical), zones and gradient compensation (A single, B dual, C compensated) and field of view (p.2 Table 1, p.50 Table 20). This page is the exact part MLX90614ESF-BCI-000-TU. Every TO-39 drawing in the datasheet (p.47 to p.49, Figures 41 to 46) shows the same lead pattern (0.45 mm leads on a 5.08 mm circle, 13.00 mm long, tab at 45 degrees between pins 1 and 4) and p.6 gives one pinout for all of them, so:
| Variant group | Field of view | Can (drawing) | Symbol | Footprint | 3D model on this page |
|---|---|---|---|---|---|
| MLX90614ESF-BCI-000-TU (this page) | 5 deg | xCI: 9.00 cap, 20.20 tall (p.49 Fig. 45) | fits | fits | fits |
| MLX90614ESF-BCI-000-SP | 5 deg | xCI | fits | fits | fits (same can, other packing) |
| MLX90614ESF-DCI-000-TU / -SP (3 V medical accuracy) | 5 deg | xCI | fits | fits | fits |
| xAA, xBA (single or dual zone, standard can) | 90 deg / 70 deg | xxA: 8.20 cap, 4.10 tall (p.47 Fig. 41) | fits | fits | no |
| xCC | 35 deg | 10.20 cap, 8.10 tall (p.47 Fig. 42) | fits | fits | no |
| xCF (Fresnel lens) | 10 deg | 9.00 cap, 17.20 tall (p.48 Fig. 43) | fits | fits | no (3 mm shorter) |
| xCH (refractive lens) | 10 deg (p.37), 12 deg (p.50) | 8.20 cap, 8.35 tall (p.48 Fig. 44) | fits | fits | no |
| xCK | 13 deg | 9.30 cap, 8.10 tall (p.49 Fig. 46) | fits | fits | no |
Notes: the symbol's supply description (2.6 to 3.6 V) is for the B and D versions; the A versions take 4.5 to 5.5 V and have the zener on pin 1 (p.8 Tables 4 and 5). The datasheet gives two widths for the xCH option (10 degrees in Table 19, 12 degrees in Table 20). Distributor listings found on 2026-10-21: Mouser 482-90614ESFBCI000SP, 482-90614ESFDCI000SP; DigiKey MLX90614ESF-DCI-000-TU-ND, MLX90614ESF-DCI-000-SP-ND.
Sourcing
| Distributor | Part number | Stock (2026-10-21) |
|---|---|---|
| Mouser | 482-90614ESFBCI000TU | 859 |
| DigiKey | MLX90614ESF-BCI-000-TU-ND | 1426 |
| LCSC / JLCPCB | not listed (adom-parts-search, 2026-10-21) |
CAD
| Tool | Files |
|---|---|
| KiCad | Symbol mlx90614esf-bci-000-tu.kicad_sym (two columns, SMBus / PWM and Power groups, chip outline in the body, MPN / Manufacturer / Mouser / DigiKey properties); footprint mlx90614esf-bci-000-tu.kicad_mod; model mlx90614esf-bci-000-tu-etched.step |
| Fusion / EAGLE | mlx90614esf-bci-000-tu.lbr (symbol, package and connects; MPN, MANUFACTURER, MOUSER_PN, DIGIKEY_PN attributes) |
| Altium | altium/MLX90614ESF-BCI-000-TU.SchLib, altium/MLX90614ESF-BCI-000-TU.PcbLib (STEP body embedded), hub altium/MLX90614ESF-BCI-000-TU.adom-lbr.json |
| Any | STEP and GLB, below |
Footprint: KiCad's own Package_TO_SOT_THT:TO-39-4 land pattern (the datasheet gives none): 1.20 mm pads with 0.70 mm drills on the 5.08 mm lead circle, pad 1 oval, the tab drawn on the silkscreen between pads 1 and 4. Changed from KiCad's file: the name, the F.Fab body circle (now the datasheet's 9.15 mm header) and the 3D model path. KiCad's footprint points at TO-39-4.step, which is not in KiCad's 3D library; this footprint points at ${KIPRJMOD}/mlx90614esf-bci-000-tu-etched.step, so put the STEP beside your project (or edit the path). Details: provenance/footprint.json.
Fusion library note: adom-lbr 2.47.5 treated this four-pin symbol as a glyph and hid the pin names; the published .lbr has the names made visible again (the visible="pad" attribute removed from the four pins), and it lints clean.
3D models
| File | What it is |
|---|---|
| mlx90614esf-bci-000-tu-etched.step | The library model for board CAD: the xCI can built from the datasheet, with the device code BCI on the side wall in an Adom.LaserEtch group. |
| mlx90614esf-bci-000-tu.step | The same package, unmarked. |
| mlx90614esf-bci-000-tu-etched.glb | The marked model as GLB, clean for boards and digital twins (no pad outlines, labels or silkscreen), nickel can and tin leads. |
| mlx90614esf-bci-000-tu-hero.glb | The annotated page hero (adom-hero 1.4): the marked part plus teal dashed pad outlines, silkscreen with pin 1 and pad signal names. Display only, never for a board. |
| lod/ | Board-use detail levels (below). |
Frame for every file: Z up, millimetres in STEP, origin on footprint pad 1 (KiCad's TO-39 convention), can axis at x = 2.54, binds with zero offset and rotation. The seating plane z = 0 is the bottom of the glass lead beads, which stand 0.38 mm below the header (p.49); the header bottom is at z = 0.38, the top of the cap at z = 20.58, the lead ends at z = -12.62.
Why the model is built from the datasheet
- Melexis STEP: not obtained (melexis.com refused a scripted download on 2026-10-21).
- KiCad's model: KiCad's TO-39-4 footprint references
TO-39-4.step, which does not exist in KiCad 10.0 or in the kicad-packages3D repository. The nearest KiCad model, TO-39-3, is a 3-lead short can: 6.5 mm from header to top. The 5 degree MLX90614xCI has the long collimator cap: 20.20 mm (p.49). So the model is built from the p.49 drawing.
This model is AI-generated from the datasheet drawing (provenance/tools/build_to39_bci.py, CadQuery).
Model proof: overlay on the datasheet drawing
The model was rendered orthographically at the drawing's own scale (44.5 px/mm at 400 dpi, calibrated on the printed 9.00 and 20.20) and blended over p.49 Figure 45, side view and bottom view. Blue fill and red outline: the model. Black: the datasheet.
| Dimension (mm) | Datasheet (p.49) | Model |
|---|---|---|
| Cap top to header bottom | 20.20 ±0.15 | 20.20 |
| Cap top to header top line | 19.50 ±0.10 | 19.50 |
| Cap diameter | 9.00 ±0.10 | 9.00 |
| Top chamfer | 0.50 x 45 deg | 0.50 x 45 deg |
| Groove | 1.50 diameter, centre 0.20 outside the wall, 1.58 below the top | as printed |
| Header diameter | 9.15 +0.20 / -0.10 | 9.15 |
| Tab width | 0.80 ±0.10 | 0.80 |
| Leads | 0.45 ±0.04 on a 5.08 circle, 13.00 ±0.50 below the header | as printed |
| Lead beads | 1.20 diameter, 0.38 below the header | as printed |
| Top opening | M5 thread | 4.13 bore (M5 minor diameter) |
| Header flange thickness | not printed | 0.40 (measured off the drawing) |
| Header step at 9.00 | not printed | 0.29 (measured) |
| Tab tip from the can axis | not printed | 5.46 (measured) |
| Bore depth | not given | 2.00 (assumed) |
Marking: Melexis lasers ten symbols, the device code (here BCI) followed by a 7-digit lot number (p.50 Table 20). The models carry BCI only, since the lot digits differ per part, on the side wall facing +Y. The datasheet does not say where on the can the marking sits or which font it uses, so the position and font are Adom's choice.
Pin 1
Footprint pad 1, the model's lead 1 and the symbol's pin 1 agree, and the model seen from below matches the datasheet's bottom view (tab up, pin 1 upper right). The leads sit on the pad centres with a 0.000 mm offset (check).
Detail levels for board and digital-twin viewers
| Level | File | Triangles | Size | Marking |
|---|---|---|---|---|
| high | mlx90614esf-bci-000-tu-high.glb | 2960 | 89 KiB | yes |
| medium | mlx90614esf-bci-000-tu-medium.glb | 2960 | 66 KiB | yes |
| low | mlx90614esf-bci-000-tu-low.glb | 1602 | 37 KiB | no |
| super-low | mlx90614esf-bci-000-tu-super-low.glb | 908 | 24 KiB | no |
All four come from the datasheet-built model, share its frame and bounds, carry no footprint or silkscreen artwork and keep the four leads, beads, tab and cap groove. Status: candidate; the cached previews were inspected, a streaming LOD viewer has not qualified them.
Design notes from the datasheet
- Keep other nets off the metal can: Melexis recommends no electrical connection to the can except through VSS (p.6), and the can is not isolated (p.44).
- Accuracy holds in thermal equilibrium. Narrow-FOV parts such as this one see less energy from the object, so heat sources near the can (regulators, heaters, a warm object close by) still disturb the reading even with the gradient compensation of the C versions (p.35).
- Bus activity on SCL couples into the sensor input inside the can and can corrupt readings, more so on narrow-FOV devices: keep SDA and SCL quiet for longer than the refresh and settling time before a read, or use the PWM output (p.22).
- Up to 127 devices can share one SMBus by setting the address in EEPROM; resistive pull-ups are the simple choice, current-source pull-ups help with heavy bus capacitance (p.41).
- Lead forming and assembly: follow Melexis' TO-package guidance and limit thermal shock on the glass beads; robotic soldering is recommended (p.50).
Manufacturer and resources
| Resource | Link |
|---|---|
| Product page | melexis.com MLX90614 |
| Datasheet | Rev 021, 02-Jun-2026, DOC#3901090614: PDF on this page, melexis.com |
| Filter application note | "Understanding MLX90614 on-chip digital signal filters", named on p.15, from melexis.com |
| Evaluation board | EVB90614 with PC software, named on p.15 |
| Handling and assembly | melexis.com/ic-handling-and-assembly (p.50) |
Symbol chip outline
The symbol body carries an outline of the 3D model (artwork/MLX90614ESF-BCI-000-TU-3d-outline-dark-named.svg, drawn by adom-aiflow-etch outline from the plain and marked STEP), so the schematic shows the same tall can as the 3D view.
Cited datasheet pages
Provenance and license
PROVENANCE.md lists every file with its origin and SHA-256; provenance/3d-model.json records each model dimension against the datasheet, the KiCad library check and the frame; verification.json is the verification log. Adom-authored files are CC-BY-4.0; the KiCad-derived footprint and the Melexis datasheet keep their own terms (LICENSE).