component
LM4040C50FTA
Public Unreviewedby Ray
Diodes Incorporated Voltage Reference, SOT-23. Datasheet-verified pinout, 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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README
markdownLM4040C50FTA
Diodes Incorporated · Voltage Reference · SOT-23
LM4040C50FTA from Diodes Incorporated, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | Cathode | passive | Cathode of the shunt voltage reference. Connect through a bias resistor to the positive supply; the reference regulates this pin to 5.0V above the Anode when biased between 60µA and 15mA reverse current. |
| 2 | Anode | passive | Anode of the shunt voltage reference. Typically tied to the circuit ground/return; all voltages in the datasheet are referenced to this pin. |
| 3 | NC | unconnected | No internal connection. Per the datasheet, pin 3 must be left floating or connected to pin 2 (Anode). Do not tie to Cathode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-23 |
| Category | PMIC |
| Pins | 3 |
Ordering variants
Same part, different packaging or reel option.
LM4040C50FTA
CAD (KiCad official)
- Symbol:
LM4040C50FTA - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (16 pp, sha256
273ea3e61e9ec2d9, retrieved 2026-08-17, tier: manufacturer) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).