Mfr Part #:

MCP121T-475E/TT

The Microchip Technology MCP121T-475E/TT is a voltage supervisor IC designed for critical power-monitoring applications. It features a 4.63V operating voltage and an open drain output.

✓ Total Stock: 30,684 pcs

$ Price Range: $0.75

MCP121T-475E/TT Available from 4 distributors

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Smaxon Electronics ✓ Non-Authorised Inventory information	17,129 pcs On Request	17129 pcs	On Request	1	On Request	On Request	20+	On Request	On Request
Risen Electronics ✓ Non-Authorised Inventory information	10,000 pcs On Request	10000 pcs	On Request	1	On Request	On Request	On Request	On Request	2026-02-16 21:33:16
Fe Components ✓ Non-Authorised Inventory information	3,000 pcs On Request	3000 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Rayichip ✓ Non-Authorised Inventory information	555 pcs On Request	555 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

MCP121T-475E/TT Description

Short technical summary and product information.

The MCP121T-475E/TT from Microchip Technology is a voltage supervisor designed to ensure reliable system operation by keeping microcontrollers in reset until system voltage stabilizes.

This device monitors a single voltage level and features an active-low reset output with an open drain or open collector configuration. It operates at a nominal voltage of 4.63V and has a reset timeout of 80ms minimum. The operating temperature range is -40°C to 125°C (TA).

Available in a SOT-23-3 surface mount package, the MCP121T-475E/TT is suitable for applications requiring precise power monitoring, such as computers, intelligent instruments, and portable battery-powered equipment.

Key electrical characteristics include an ultra-low supply current of 1.75 µA (steady-state maximum) and a reset delay of 120 ms (typical).

MCP121T-475E/TT Quick Information

Product Type: Voltage Supervisor

Series: MCP121

Canonical Name: MCP121T-475E/TT Voltage Supervisor

Subcategory: Power Management ICs

MCP121T-475E/TT Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

MCP121T-475E/TT Estimated Pricing

Qty	Low	High
1+	$0.75	$0.75

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

MCP121T-475E/TT Features

Monitors single voltage level.
Active-low, open-drain reset output.
Operates at 4.63V nominal voltage.
Wide -40°C to 125°C temperature range.
Compact SOT-23-3 surface mount package.

MCP121T-475E/TT Applications

Critical microcontroller power monitoring.
Computer system power supervision.
Intelligent instrument power control.
Portable battery-powered devices.

MCP121T-475E/TT FAQs

5 frequently asked questions generated from this part’s specifications.

What is the operating voltage for the MCP121T-475E/TT?

The operating voltage is 4.63V.

What type of output does the MCP121T-475E/TT have?

It has an open drain or open collector output.

What is the operating temperature range for this voltage supervisor?

The operating temperature range is -40°C to 125°C (TA).

What is the reset timeout for the MCP121T-475E/TT?

The reset timeout is 80ms minimum.

What package is the MCP121T-475E/TT available in?

It is available in SOT-23-3, TO-236-3, and SC-59 packages.

Category	Supervisors
Manufacturer Name	Microchip Technology
Mounting Type	Surface Mount
Number of Voltages Monitored	1
Operating Temperature	-40°C ~ 125°C (TA)
Output	Open Drain or Open Collector
Reset	Active Low
Reset Timeout	80ms Minimum
Supplier Device Package	SOT-23-3
Supplier Package	SOT-23-3
Supply Current	1.75 µA
Type	Simple Reset/Power-On Reset
Voltage	4.63V