REF3033AIDBZR
Public Made by Adomby adom
Texas Instruments Voltage Reference, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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README
markdownREF3033AIDBZR
Texas Instruments · Voltage Reference · SOT-23
REF3033AIDBZR from Texas Instruments, 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 | IN | power_in | Supply voltage input (V+). Operating range VREF + 1mV (typ dropout) up to 5.5V; recommended VIN ≥ 3.35V for the 3.3V REF3033. Quiescent current 42µA typ / 50µA max. |
| 2 | OUT | output | Precision voltage reference output. 3.30V nominal (±0.2% initial accuracy, 3.294V-3.306V). Sources up to 25mA; stable without an external load capacitor. Short-circuit current typ 45mA to GND. |
| 3 | GND | power_in | Ground / common return (V−). Absolute maximum V+ to V− is 7.0V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23 |
| Category | PMIC |
| Pins | 3 |
Ordering variants
Same part, different packaging or reel option.
REF3033AIDBZRREF3033AIDBZT
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Output voltage | VOUT | 3.294 | 3.3 | 3.306 | V | TA = +25°C, ILOAD = 0mA, VIN = 5V (table header) | 3 |
| Line regulation | 130 | 400 | µV/V | VREF + 50mV ≤ VIN ≤ 5.5V | 3 | ||
| Output voltage temp drift | dVOUT/dT | 20 | 50 | ppm/°C | 0°C ≤ TA ≤ +70°C | 3 | |
| Output voltage temp drift | dVOUT/dT | 28 | 60 | ppm/°C | –30°C ≤ TA ≤ +85°C | 3 | |
| Output voltage temp drift | dVOUT/dT | 30 | 65 | ppm/°C | –40°C ≤ TA ≤ +85°C | 3 | |
| Output voltage temp drift | dVOUT/dT | 35 | 75 | ppm/°C | –40°C ≤ TA ≤ +125°C | 3 | |
| Load regulation | dVOUT/dILOAD | 3 | 100 | µV/mA | 0mA < ILOAD < 25mA, VIN = VREF + 500mV | 3 | |
| Thermal hysteresis | dT | 25 | 100 | ppm | 3 | ||
| Dropout voltage | VIN – VOUT | 1 | 50 | mV | 3 | ||
| Supply voltage | VS | 5.5 | V | IL = 0 | 3 | ||
| Supply voltage over temperature | VS | 5.5 | V | –40°C ≤ TA ≤ +125°C | 3 | ||
| Quiescent current | IQ | 42 | 50 | µA | TA = +25°C, ILOAD = 0mA, VIN = 5V (table header) | 3 | |
| Quiescent current over temperature | IQ | 59 | µA | –40°C ≤ TA ≤ +125°C | 3 | ||
| Operating range | -40 | 125 | °C | 3 | |||
| Specified temperature range | -40 | 125 | °C | 3 | |||
| Supply voltage V+ to V– | V+ to V– | 7 | V | 2 | |||
| Operating temperature | -40 | 125 | °C | 2 | |||
| Storage temperature | -65 | 150 | °C | 2 | |||
| Junction temperature | 150 | °C | 2 | ||||
| Lead temperature | 300 | °C | soldering, 10s | 2 | |||
| Thermal resistance junction-to-case | θJC | 110 | °C/W | SOT23-3 surface-mount | 3 | ||
| Thermal resistance junction-to-ambient | θJA | 336 | °C/W | SOT23-3 surface-mount | 3 |
CAD (KiCad official)
- Symbol:
REF3033AIDBZR - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
ref3033aidbzr-etched.step/ref3033aidbzr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ref3033aidbzr.step/ref3033aidbzr.glbare the bare package body.
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
ref3033aidbzr.step |
59 KB | You want the bare part, or you mark your own boards. |
ref3033aidbzr-etched.step |
2.4 MB | You want the part with REF3033AIDBZR already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 584 faces against 69 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (17 pp, sha256
ffa7c37e7b71c282, 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).