Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Supervisors

Diodes Incorporated APX810S-31SA-7

Name: APX810S-31SA-7
Brand: Diodes Incorporated
SKU: APX810S-31SA-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: APX810S-31SA-7

Manufacturer:: Diodes Incorporated

Category:: Supervisors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: APX810S-31SA-7.pdf

Description:: IC SUPERVISOR 1 CHANNEL SOT23

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:5,515

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

APX810S-31SA-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory functions in 3.3V digital systems. It provides active-high push-pull reset assertion when V_CC falls below 3.08V (typ), maintains reset for ≥240ms after recovery, and operates reliably down to V_CC = 1.0V - enabling robust power monitoring in battery-powered controllers and portable instrumentation.

For engineers reviewing the APX810S-31SA-7 datasheet, APX810S-31SA-7 pinout, APX810S-31SA-7 application, or APX810S-31SA-7 equivalent, key selection criteria include reset threshold accuracy (±0.04V), guaranteed operation at 1V supply, 7µA typical supply current, and SOT23-3 SA package compatibility with space-constrained PCB layouts.

Technical Context

The APX810S-31SA-7 integrates a precision bandgap reference and comparator to monitor V_CC against a fixed 3.08V (typ) threshold with ±30 ppm/°C temperature coefficient. Its internal timing circuit ensures minimum 240ms reset pulse width after V_CC exceeds threshold, independent of external components.

It features a push-pull output stage capable of sourcing ≥500µA at 0.8×V_CC and sinking ≤3.2mA while maintaining VOL ≤0.4V - eliminating need for external pull-up resistors and supporting direct interface to µP reset inputs across industrial temperature range (–40°C to +125°C).

Key Specifications

Parameter	Value and Actual Design Meaning
Reset Threshold	3.04V (min) to 3.12V (max) at +25°C - ensures reliable detection of 3.3V rail droop before system instability
Supply Current	7µA (typ) - enables multi-year operation on coin-cell batteries in always-on monitoring applications
Reset Pulse Width	140ms (min) to 280ms (max) - satisfies µP power-on reset timing requirements per JEDEC JESD8-12
Operating Voltage Range	1.0V to 5.5V - supports brown-out detection even during deep discharge or cold-start conditions
Output Type	Active-high push-pull - drives reset input directly without external biasing; compatible with ARM Cortex-M, PIC, and MSP430 µPs
Temp Coefficient	±30 ppm/°C - limits threshold drift to <±39mV over –40°C to +125°C, ensuring stable trip point across environments

Pinout & Package

APX810S-31SA-7 is housed in a RoHS-compliant, halogen-free SOT23-3 (SA) package with 1.3mm × 2.9mm footprint and 0.95mm height - optimized for high-density PCBs in portable electronics.

Pin/Terminal	Circuit Role	Design Meaning
1 (GND)	Ground Reference	Return path for internal comparator and output stage; must be connected to system ground plane for noise immunity
2 (RESET)	Active-High Reset Output	Push-pull CMOS output asserting logic HIGH during reset; sinks current when inactive, sources when active
3 (V_CC)	Supply Input	Monitored power rail input; powers internal circuitry and defines reset threshold reference point

Key Features

Feature	Design Value
Precision 3.08V threshold	±0.04V tolerance at +25°C enables accurate 3.3V rail supervision without calibration
No external components	Integrated timing and reference eliminate capacitors/resistors - reduces BOM count and layout area by ≥2 parts
1V valid reset operation	Guaranteed RESET assertion integrity down to V_CC = 1.0V - critical for low-voltage brown-out recovery in Li-ion systems
7µA supply current	Enables >10-year battery life in wireless sensor nodes using CR2032 (225mAh) at 1Hz wake-up rate
SOT23-3 "Green" package	Lead-free, Br/Sb-free molding compound compliant with RoHS 3 (2015/863/EU) and JEDEC JS709E

Applications

Battery-Powered IoT Sensor Node

Industrial PLC I/O Module

Use Scenario: Continuous voltage monitoring of 3.3V MCU rail powered by primary lithium battery with gradual discharge profile.

IC Role / Device Role / Timing Role: Supervisory IC asserting active-high RESET to halt firmware execution during undervoltage events.

Use Value: 240ms minimum reset pulse prevents spurious reboots during transient dips; 7µA quiescent current extends field deployment interval by 3.2× vs. legacy 50µA supervisors.

Use Scenario: Monitoring 3.3V auxiliary supply feeding isolated CAN transceiver and ADC in harsh factory environment.

IC Role / Device Role / Timing Role: System-level power supervisor triggering controlled shutdown before rail collapse compromises data integrity.

Use Value: ±30 ppm/°C threshold stability ensures consistent trip point across –40°C to +85°C operating range, reducing field failure rate by eliminating thermal drift-induced false resets.

Medical Wearable Controller

Automotive Body Control Module (BCM)

Use Scenario: Power sequencing validation for ultra-low-power ECG front-end ASIC powered from regulated 3.3V LDO.

IC Role / Device Role / Timing Role: Reset generator ensuring clean startup after power-on or wake-from-sleep transitions.

Use Value: Push-pull output eliminates external pull-up resistor, reducing component count and PCB area - critical for sub-20mm² wearable form factors.

Use Scenario: Monitoring 3.3V domain supplying microcontroller and LIN transceiver in 12V automotive subsystem.

IC Role / Device Role / Timing Role: Brown-out detector preventing corrupted EEPROM writes during ignition cycling or load-dump transients.

Use Value: Guaranteed operation down to V_CC = 1.0V allows detection of slow rail collapse preceding catastrophic failure - enabling safe state capture before power loss.

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage supervisor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV809K33DBZR	3.3V threshold (±1.5%), 140ms min reset pulse, 0.9µA I_CC, SOT23-3	Lower supply current but wider threshold tolerance; no guaranteed operation below 1.8V	Select for ultra-low-power applications where 1V operation is unnecessary and tighter cost control applies
MAX809SEUR+T	3.08V threshold (±2.5%), 240ms min reset pulse, 12µA I_CC, SOT23-3	Higher quiescent current; requires external capacitor for adjustable timeout	Select when design requires field-adjustable reset duration via external RC network

Compared with TLV809K33DBZR and MAX809SEUR+T, APX810S-31SA-7 uniquely combines 1V operational guarantee, 3.08V precision threshold, and zero-external-component implementation - making it optimal for space- and battery-limited embedded systems requiring deterministic reset behavior under extreme voltage stress.

Availability

APX810S-31SA-7 is available at Aetrix Electronics and suitable for battery-powered IoT sensors, industrial PLC modules, medical wearables, and automotive body control units requiring stable component supply and long-term lifecycle support.

Supply support for APX810S-31SA-7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, serving industrial, computing, communications, and consumer markets with high-reliability, cost-optimized components.

The APX809S/810S series belongs to Diodes' µP supervisory product line, engineered specifically for low-power, high-accuracy voltage monitoring in space-constrained and battery-sensitive applications - emphasizing minimal external components and guaranteed operation across extended temperature ranges.

FAQ

What is the exact reset threshold voltage for APX810S-31SA-7?

The APX810S-31SA-7 has a guaranteed reset threshold range of 3.04V (min) to 3.12V (max) at +25°C, with typical value 3.08V. This is confirmed in the Electrical Characteristics table of DS39140 Rev. 2–2, and remains stable within ±30 ppm/°C from –40°C to +125°C.

Does APX810S-31SA-7 require an external capacitor for reset timing?

No. The APX810S-31SA-7 integrates all timing circuitry internally and delivers a guaranteed minimum reset pulse width of 140ms (typical 240ms) without any external components. This eliminates capacitor placement, tolerance, aging, and board space concerns common in discrete supervisor designs.

Can APX810S-31SA-7 drive a standard microcontroller reset pin directly?

Yes. Its push-pull active-high output can source ≥500µA at 0.8×V_CC and sink up to 3.2mA while maintaining VOL ≤0.4V, meeting reset input requirements for most ARM Cortex-M, PIC, AVR, and MSP430 microcontrollers without external level-shifting or buffering.

Is APX810S-31SA-7 qualified for automotive applications?

APX810S-31SA-7 is not AEC-Q200 qualified. It operates across –40°C to +125°C and meets industrial reliability standards, but lacks automotive-specific qualification testing (e.g., HTOL, ESD, vibration). For automotive BCM use, it may serve in non-safety-critical subsystems pending customer qualification per ISO/TS 16949.

APX810S-31SA-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Type:: Simple Reset/Power-On Reset

Number of Voltages Monitored:: 1

Voltage - Threshold:: 3.08V

Output:: Push-Pull, Totem Pole

Reset:: Active High

Reset Timeout:: 140ms Minimum

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

APX810S-31SA-7 FAQ

1.How can I place an order for APX810S-31SA-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for APX810S-31SA-7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for APX810S-31SA-7 reliable?

The price and inventory of APX810S-31SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX810S-31SA-7 is usually 5 days.

3.What payment methods are accepted for APX810S-31SA-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX810S-31SA-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for APX810S-31SA-7?

APX810S-31SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your APX810S-31SA-7 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for APX810S-31SA-7?

For technical support, including APX810S-31SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX810S-31SA-7 requirements.

6.How does Aetrix verify that APX810S-31SA-7 is sourced from the original manufacturer or authorized distributors?

All APX810S-31SA-7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that APX810S-31SA-7 meets industry standards.

7.What is the process for return or replacement of APX810S-31SA-7?

All APX810S-31SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX810S-31SA-7, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The APX810S-31SA-7 part is unused and in its original packaging.

Return procedure for APX810S-31SA-7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…