component
UR133AG-50-AB3-B-R
Public Made by Adomby adom
UTC(Unisonic Tech) Linear Voltage Regulators (LDO), SOT-89. 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
markdownUR133AG-50-AB3-B-R
UTC(Unisonic Tech) · Linear Voltage Regulators (LDO) · SOT-89
UR133AG-50-AB3-B-R from UTC(Unisonic Tech), in a SOT-89. 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 | VOUT | power_out | Regulated output (5.0V fixed for the -50 code, 500mA for the UR133A), needs a 10μF or larger capacitor to GND for stability. |
| 2 | GND | power_in | Ground reference pin (Ground/Adjustable pin on the ADJ version) for the regulator. |
| 3 | VIN | power_in | Positive power input rated -0.3 to +12V absolute maximum, with a 1μF or larger capacitor to GND recommended. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UTC(Unisonic Tech) |
| Package | SOT-89 |
| 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 |
|---|---|---|---|---|---|---|---|
| Output Voltage (5.0V) | VOUT | 4.9 | 5 | 5.1 | V | IL=2mA, VIN-VOUT=1.4V | 4 |
| Dropout Voltage UR133A | VD | 1.3 | V | IL=500mA | 4 | ||
| Line Regulation | ΔVOUT | 0.5 | %VOUT | IL=2mA, VIN-VOUT=2V ~ VIN=12V | 4 | ||
| Load Regulation UR133A | ΔVOUT | 10 | 50 | mV | IL=2mA ~ 500mA, VIN-VOUT=2V | 4 | |
| Current Limit UR133A | ILIMIT | 550 | mA | VIN-VOUT=2V, VOUT=0V | 4 | ||
| Standby Current | IST-BY | 5 | mA | IL=0, VIN=12V | 4 | ||
| Output Voltage Temperature Coefficient | 50 | 150 | PPM/°C | 4 | |||
| Input Voltage | VIN | -0.3 | 12 | V | 3 | ||
| Power Dissipation SOT-89 | PD | 500 | mW | SOT-89 | 3 | ||
| Operating Temperature | TOPR | -40 | 85 | °C | 3 | ||
| Storage Temperature | TSTG | -65 | 150 | °C | 3 | ||
| Junction to Case Thermal Resistance SOT-89 | θJC | 100 | °C/W | SOT-89 | 3 | ||
| Junction to Ambient Thermal Resistance SOT-89 | θJA | 300 | °C/W | SOT-89 | 3 |
CAD (KiCad official)
- Symbol:
UR133AG-50-AB3-B-R - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files:
ur133ag-50-ab3-b-r-etched.step/ur133ag-50-ab3-b-r-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ur133ag-50-ab3-b-r.step/ur133ag-50-ab3-b-r.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UTC(Unisonic Tech) datasheet (8 pp, sha256
e2b32e3c477e62f3, retrieved 2026-10-26, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).