component

LM4040B41IDBZR

Public Made by Adom

by adom

Texas Instruments Voltage References, SOT-23-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management icslm4040b41idbzrfactory-2.0.0extractor-text

Verified LM4040B41IDBZR

by Ray · last 2 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

2 Nov 2026RayPublished by the parts factory: tier mfr, 3 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: LM4040B41IDBZR · SOT-23-3 · 3 pins
  • ✓copper: 3 copper pads, none touching another net
  • ✓datasheet: all 3 pin names found in the 58-page datasheet
  • ✓distributor: lcsc C2156807, digikey 296-20876-2-ND, mouser 595-LM4040B41IDBZR
  • ✓family: SOT-23-3
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-zrjpdmuc/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 3 pins = 3 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 3 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ lm4040b41idbzr.kicad_sym✓ lm4040b41idbzr.kicad_mod✓ lm4040b41idbzr.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 4d ago
viewers lm4040b41idbzr: viewers · Ray 4d ago
lm4040b41idbzr-etched.glb Publish 0.1.0 · Ray 4d ago
lm4040b41idbzr-etched.step lm4040b41idbzr: factory component page (tier=mfr) · Ray 4d ago
lm4040b41idbzr-hero.glb lm4040b41idbzr: hero GLB from the etched model (keeps the MPN mark) · Ray 4d ago
lm4040b41idbzr-hero.overlay.json Publish 0.1.0 · Ray 4d ago
lm4040b41idbzr.glb Publish 0.1.0 · Ray 4d ago
lm4040b41idbzr.kicad_mod Publish 0.1.0 · Ray 4d ago
lm4040b41idbzr.kicad_sym Publish 0.1.0 · Ray 4d ago
lm4040b41idbzr.lbr Publish 0.1.0 · Ray 4d ago
lm4040b41idbzr.step Publish 0.1.0 · Ray 4d ago
package.json Publish 0.1.0 · Ray 4d ago
page.json Set visibility: public · Ray 4d ago
README.md Publish 0.1.0 · Ray 4d ago
verification.json Verified: Published by the parts factory: tier mfr, 3 pins · Ray 4d ago

LM4040B41IDBZR

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm4040b41idbzr.step / lm4040b41idbzr.glb are 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, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF