MCP121-300E/TO The Microchip Technology MCP121-300E/TO is a voltage supervisor IC designed for microcontroller power monitoring. It features an active-low reset and an open-drain output.
Mfr Part #:

MCP121-300E/TO

Available from 1 distributors
Mfr Name: Microchip Technology
Microchip Technology
The Microchip Technology MCP121-300E/TO is a voltage supervisor IC designed for microcontroller power monitoring. It features an active-low reset and an open-drain output.
✓ Total Stock: 431 pcs
$ Price Range: $0.75

MCP121-300E/TO Available from 1 distributor

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MCP121-300E/TO Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Mounting Type
Number of Voltages Monitored
Operating Temperature
Output
Reset
Reset Timeout
Supplier Device Package
Supplier Package
Supply Current
Type
Voltage

MCP121-300E/TO Description

Short technical summary and product information.

The Microchip Technology MCP121-300E/TO is a voltage supervisor IC designed to ensure reliable system operation by keeping microcontrollers in reset until system voltage stabilizes. This device monitors a single voltage level and provides an active-low reset signal with an open-drain or open-collector output.

 

Key electrical characteristics include a nominal monitoring voltage of 2.93V and a reset timeout of 80ms minimum. The device operates within an extended temperature range of -40°C to 125°C. Its ultra-low supply current of 1.75 µA makes it suitable for battery-powered applications.

 

The MCP121-300E/TO is available in a TO-92-3 package and is designed for through-hole mounting. This component is ideal for critical power-monitoring applications in computers, intelligent instruments, and portable equipment where maintaining stable voltage is essential for proper microcontroller function.

MCP121-300E/TO Quick Information

Product Type: Voltage Supervisor
Canonical Name: Microchip Technology MCP121-300E/TO Voltage Supervisor
Subcategory: Supervisors

MCP121-300E/TO Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

MCP121-300E/TO Estimated Pricing

Qty Low High
1+ $0.75 $0.75

Estimated market price range - modelled values for guidance only, not live distributor offers.

MCP121-300E/TO Features

  • Monitors single voltage level
  • Active-low reset output
  • Open-drain or open-collector output
  • Operates at -40°C to 125°C
  • TO-92 package for through-hole mounting

MCP121-300E/TO Applications

  • Monitors microcontroller power supply
  • Ensures stable system operation
  • Used in portable battery-powered devices
  • Suitable for intelligent instruments
  • Critical for computer power management

MCP121-300E/TO FAQs

7 frequently asked questions generated from this part’s specifications.
What is the threshold voltage of the MCP121-300E/TO?

2.93V nominal.

What is the operating temperature range?

-40°C to 125°C.

What package is the MCP121-300E/TO available in?

TO-226-3, TO-92-3 (TO-226AA) through-hole package.

What is the supply current?

1.75 µA maximum steady-state.

What is the reset delay?

120 ms typical.

What type of output does it have?

Active-low open drain or open collector.

How many voltages does it monitor?

1.

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