MCP131-300E/TO Microchip Integrated Circuit (Other) In Stock
The MCP131-300E/TO is a single-channel voltage supervisor and microcontroller reset IC from Microchip with a fixed 2.93 V threshold, active-low reset output, and single-supply operation. Housed in a 3-pin TO-92 through-hole package for cost-effective system protection. From $0.50 in stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Other
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP131-300E/TO Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2990(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 2.93 V threshold voltage with precision internal reference ensures reliable microcontroller reset at exactly the right supply level
- 3-pin TO-92 through-hole package enables easy prototyping and low-cost integration into simple reset circuits without external components
- Active-low open-drain reset output compatible with 3.3 V and 5 V microcontroller reset pins, supporting direct connection to MCU MCLR or RESET inputs
Applications
The MCP131-300E/TO is designed to monitor 3.3 V supply rails in embedded systems and assert a clean reset signal when the voltage drops below 2.93 V. It is commonly used to protect PIC microcontrollers, AVR devices, and other 3.3 V logic from brownout-induced data corruption during power-up and power-down sequences. The simple 3-pin TO-92 package makes it a cost-effective supervisor for battery-powered consumer electronics and industrial control boards.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TO-92-3 |
| Factory Lead Time | 21Weeks |
| 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 | O-PBCY-T3 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SIP3,.1,50 |
| Package Shape | ROUND |
| Package Style | CYLINDRICAL |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Supply Current-Max (Isup) | 0.09mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1V |
| Supply Voltage-Nom (Vsup) | 3V |
| Surface Mount | NO |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE |
| Terminal Position | BOTTOM |
| Threshold Voltage-Nom | +2.93V |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Philippines |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
At what voltage threshold does the MCP131-300E/TO assert its reset signal, and how long does it hold reset?
The MCP131-300E/TO asserts its active-low reset output when the monitored supply drops below 2.93 V. The reset remains asserted for a minimum reset timeout period (typically 140 ms for the MCP131 family) after the supply rises back above the threshold, ensuring the microcontroller has sufficient time to stabilize before releasing from reset.
How does the MCP131-300E/TO protect a PIC microcontroller during a brownout condition?
When a PIC microcontroller's 3.3 V supply dips below 2.93 V during a brownout, the MCP131-300E/TO immediately asserts the active-low MCLR reset input, halting program execution and preventing data corruption or erratic behavior. Once the supply recovers above 2.93 V, the 140 ms reset delay allows the MCU oscillator and power rails to stabilize before releasing reset.
What package options are available for the MCP131-300E and how does the TO-92 version compare to surface-mount variants?
The MCP131-300E is available in a 3-pin TO-92 through-hole package (the /TO suffix) for prototyping and through-hole PCBs, as well as in an SC-70-3 surface-mount package for compact, high-density designs. Both versions share the same 2.93 V threshold and active-low reset output with 1 channel monitoring, but the TO-92 occupies more PCB area at approximately 5 mm x 4.5 mm versus the SC-70's 2 mm x 2 mm footprint.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.5900 | $0.59 |
| 100+ | $0.5400 | $54.00 |
| 1000+ | $0.3200 | $320.00 |
| 3000+ | $0.3150 | $945.00 |
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