component
LM4040B41IDBZR
Public Made by Adomby adom
Texas Instruments Voltage References, SOT-23-3. Pinout cross-checked by two models against the datasheet, 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
markdownLM4040B41IDBZR
Texas Instruments · Voltage References · SOT-23-3
LM4040B41IDBZR from Texas Instruments, in a SOT-23-3. 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 | CATHODE | passive | Shunt current/voltage input; the datasheet limits cathode current to 15 mA recommended and -10 to 25 mA continuous absolute maximum. |
| 2 | ANODE | power_in | Common pin, normally connected to ground, and a parasitic Schottky diode exists between pins 2 and 3 of the SOT-23 package. |
| 3 | * | passive | Substrate connection that must be connected to ANODE (pin 2) or left floating, per the datasheet note on the SOT-23 connections. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-3 |
| Category | Power Management ICs |
| Pins | 3 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Reverse breakdown voltage tolerance | ΔVZ | -35 | 35 | mV | IZ = 100 μA, full range -40°C to 85°C | 6 | |
| Average temperature coefficient of reverse breakdown voltage | αVZ | -20 | 20 | ppm/°C | IZ = 1 mA, 25°C | 6 | |
| Average temperature coefficient of reverse breakdown voltage | αVZ | -100 | 100 | ppm/°C | IZ = 1 mA, full range -40°C to 85°C | 6 | |
| Reverse breakdown voltage change with cathode current | 0.5 | 0.9 | mV | IZ,min < IZ < 1 mA, 25°C | 6 | ||
| Reverse breakdown voltage change with cathode current | 1.2 | mV | IZ,min < IZ < 1 mA, full range -40°C to 85°C | 6 | |||
| Reverse breakdown voltage change with cathode current | 10 | mV | 1 mA < IZ < 15 mA, full range -40°C to 85°C | 6 | |||
| Reverse dynamic impedance | ZZ | 0.5 | 1 | Ω | IZ = 1 mA, f = 120 Hz, IAC = 0.1 IZ, 25°C | 6 | |
| Tolerance (B grade initial accuracy) | -0.2 | 0.2 | % | B grade, initial accuracy at 25°C | 1 | ||
| Temperature coefficient (B grade) | -100 | 100 | ppm/°C | B grade, average temperature coefficient | 1 | ||
| Cathode current | IZ | 15 | mA | 5 | |||
| Free-air temperature (LM4040xxxI) | TA | -40 | 85 | °C | LM4040xxxI | 5 | |
| Continuous cathode current | IZ | -10 | 25 | mA | 5 | ||
| Operating virtual junction temperature | TJ | 150 | °C | 5 | |||
| Storage temperature range | Tstg | -65 | 150 | °C | 5 | ||
| Junction-to-ambient thermal resistance (DBZ, 3 pins) | RθJA | 206 | °C/W | DBZ package | 5 |
CAD (KiCad official)
- Symbol:
LM4040B41IDBZR - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files:
lm4040b41idbzr-etched.step/lm4040b41idbzr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm4040b41idbzr.step/lm4040b41idbzr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (58 pp, sha256
eb49033a23ef277c, retrieved 2026-11-02, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(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).