MCP120T-475I/TT Microchip Integrated Circuit (SOT23 (3-Pin)) In Stock
Microchip MCP120T-475I/TT is a single-channel voltage supervisor and reset IC with a fixed 4.75 V threshold in a compact SOT-23-3 package. It monitors the supply rail and asserts a reset signal whenever the voltage drops below the preset threshold to protect MCUs and logic from undervoltage conditions. Available from stock worldwide with fast shipping.
- Manufacturer
- Microchip
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP120T-475I/TT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2800(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP120T-475I/TT?
- Fixed 4.75 V reset threshold monitors 5 V supply rails with no external components required in a tiny 3-pin SOT-23 package
- Open-drain active-low reset output holds MCU in reset for the full duration of an undervoltage event, preventing spurious code execution
- Low quiescent current and SOT-23-3 footprint make it ideal for space-constrained and battery-sensitive reset circuits
What is MCP120T-475I/TT used for?
The MCP120T-475I/TT is used in 5 V microcontroller and DSP systems to assert a clean reset signal during power-up ramp and brownout conditions, preventing undefined firmware behavior. Its fixed 4.75 V threshold is specifically designed for 5 V supply monitoring in industrial controllers, PLC I/O modules, and communication boards where even brief undervoltage events must be reliably detected. The tiny SOT-23-3 footprint also makes it a preferred reset supervisor in space-constrained embedded designs and high-density backplane cards.
What are the specifications of MCP120T-475I/TT?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-3 |
| Factory Lead Time | 6Weeks |
| YTEOL | 8 |
| Additional Feature | MNL RST:N;PW FL IO:N;PRG RST DLY:N;WD:N;WDO:N;WWD:N |
| Adjustable Threshold | NO |
| Analog IC - Other Type | VOLTAGE SUPERVISOR/RESET IC |
| JESD-30 Code | R-PDSO-G3 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TO-236 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 0.06mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +4.63V |
| Package | SOT23 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Mainland China, Thailand |
Where can I find the MCP120T-475I/TT datasheet?
MCP120T-475I/TT Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP120T-475I/TT?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
At what threshold voltage does MCP120T-475I/TT assert its reset output?
The MCP120T-475I/TT asserts its active-low reset output whenever the monitored supply voltage falls below its fixed 4.75 V threshold. It holds the reset signal asserted until the supply recovers above 4.75 V plus the built-in hysteresis, ensuring a clean and debounce-free reset signal for 5 V microcontrollers and logic devices.
How does a 3-pin SOT-23 reset supervisor like MCP120T-475I/TT compare to using an RC reset circuit?
An RC reset circuit relies on a capacitor charge time to delay reset release, making it sensitive to component tolerances and temperature drift. The MCP120T-475I/TT provides a precise 4.75 V trip point with temperature-stable CMOS comparator circuitry in a 3-pin SOT-23 package, eliminating the variability of passive RC networks and ensuring reset is asserted for the full duration of any undervoltage event below 4.75 V.
Which industrial and embedded applications most commonly use MCP120T-475I/TT for supply supervision?
PLC I/O modules, industrial motor controllers, RS-485 communication cards, and 5 V MCU evaluation boards are common users of the MCP120T-475I/TT because they operate from regulated 5 V rails and require reliable brownout detection down to 4.75 V. Its SOT-23-3 package occupies less than 5 mm² of board area, making it easy to add supply supervision without dedicating significant PCB space, even on dense multi-layer industrial backplanes.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.5030 | $0.50 |
| 100+ | $0.4600 | $46.00 |
| 250+ | $0.4388 | $109.70 |
| 500+ | $0.4344 | $217.20 |
| 1000+ | $0.3700 | $370.00 |
| 3000+ | $0.2800 | $840.00 |
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