MCP103T-475E/TT Microchip Integrated Circuit (Other) In Stock
The MCP103T-475E/TT is a micropower single-channel voltage supervisor from Microchip with a fixed threshold and SOT-23-3 packaging. It monitors supply voltages and generates a reset signal to protect microcontrollers during power-up or brownout events. From $0.35, in stock worldwide shipping.
- Manufacturer
- Microchip
- Package
- Other
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP103T-475E/TT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3150(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed voltage threshold simplifies design by eliminating external resistor dividers for threshold setting
- Micropower quiescent current extends battery life in portable and IoT devices
- Compact SOT-23-3 package occupies minimal PCB space in space-constrained designs
- Single-channel architecture provides a clean, dedicated reset signal for microcontrollers
Applications
The MCP103T-475E/TT is ideal for monitoring supply rails in battery-powered IoT devices and wearables, where its micropower consumption and fixed threshold simplify power management without complex external components. It provides reliable brownout detection and reset assertion in embedded systems with MCUs that require a clean power-on reset during voltage dips. Consumer electronics and handheld instruments also rely on this supervisor to prevent code corruption during supply voltage instability.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-3 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Additional Feature | BAT BUP SW:N;MNL RST:N;OV DET:N;PW FL IP:N;PW FL IO:N;PW FL OP:N;PRG RST DLY:N;UV DET:N;WD: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 |
| Screening Level | TS 16949 |
| Supply Current-Max (Isup) | 0.02mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1V |
| Supply Voltage-Nom (Vsup) | 3V |
| Surface Mount | YES |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +4.63 V |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Package | Other |
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 | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
At what supply voltage threshold does the MCP103T-475E/TT assert its reset output?
The MCP103T-475E/TT monitors the supply rail and asserts its reset output when the voltage falls below a fixed threshold corresponding to the '475' part number suffix, which designates a 4.75 V trip point. This ensures the microcontroller is held in reset during brownout conditions when the supply drops below 4.75 V, preventing erratic code execution.
How does the MCP103T-475E/TT's fixed threshold differ from an adjustable supervisor for MCU reset designs?
Unlike adjustable supervisors that require 2 external resistors to set the threshold, the MCP103T-475E/TT uses a factory-trimmed fixed 4.75 V threshold in a 3-pin SOT-23 package. This eliminates resistor tolerance errors, reduces BOM cost, and saves PCB area in single-rail 5 V systems where no threshold adjustment is needed.
Is the MCP103T-475E/TT suitable for battery-powered devices where quiescent current must be minimized?
Yes, the MCP103T-475E/TT is specifically described as a micropower device, drawing very low quiescent current (typically in the microamp range). This makes it appropriate for coin-cell and lithium battery powered IoT sensors, wearables, and remote monitoring nodes that operate for months or years on 1 cell without significant standby drain.
What reset output polarity and drive type does the MCP103T-475E/TT provide for MCU reset lines?
The MCP103T-475E/TT provides an active-low open-drain or push-pull reset output (depending on the specific variant) that connects directly to the MCU's active-low RESET pin. During a brownout at or below 4.75 V, the device drives the reset output low to hold the processor in reset until the supply recovers above the threshold.
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