APX812-46UG-7 Equivalent & Substitute Parts

Part Overview

The APX812-46UG-7 is a single-channel power management supervisor IC manufactured by Diodes Incorporated, designed for reset and power-on reset applications. This Surface Mount device operates across the industrial temperature range of -40°C to 85°C and features push-pull, totem pole output configuration with active high reset. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts become necessary due to supply chain constraints, inventory availability, or design flexibility requirements while maintaining identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Manufacturer Part Number	APX812-46UG-7
Manufacturer	Diodes Incorporated
Category	Power Management (PMIC)
Type	Simple Reset/Power-On Reset
Number of Voltages Monitored	1
Voltage - Threshold	4.63V
Output Configuration	Push-Pull, Totem Pole
Reset Logic	Active High
Reset Timeout	140ms Minimum
Operating Temperature Range	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	TO-253-4, TO-253AA
Supplier Device Package	SOT-143
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the APX812-46UG-7 is determined by strict equivalence across the following critical parameters:

Single voltage monitoring channel
4.63V threshold voltage
Push-pull, totem pole output configuration
Active high reset logic
140ms minimum reset timeout
Operating temperature range -40°C to 85°C
Surface mount technology with TO-253-4 / TO-253AA package footprint
SOT-143 or SOT-143-4 supplier device package compatibility
ROHS3 compliance and MSL 1 rating

All listed substitute parts meet these criteria across different manufacturers, enabling direct functional replacement in circuit designs.

Parameter Comparison

Parameter	APX812-46UG-7	ADM812LARTZ-REEL7	MAX812LEUS+T	MIC812LUY-TR	STM812LW16F
Manufacturer	Diodes Incorporated	Analog Devices Inc.	Analog Devices Inc./Maxim Integrated	Microchip Technology	STMicroelectronics
Type	Simple Reset/Power-On Reset	Simple Reset/Power-On Reset	Simple Reset/Power-On Reset	Simple Reset/Power-On Reset	Simple Reset/Power-On Reset
Number of Voltages Monitored	1	1	1	1	1
Voltage - Threshold	4.63V	4.63V	4.63V	4.63V	4.63V
Output Configuration	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole
Reset Logic	Active High	Active High	Active High	Active High	Active High
Reset Timeout	140ms Minimum	140ms Minimum	140ms Minimum	140ms Minimum	140ms Minimum
Operating Temperature Range	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-253-4, TO-253AA	TO-253-4, TO-253AA	TO-253-4, TO-253AA	TO-253-4, TO-253AA	TO-253-4, TO-253AA
Supplier Device Package	SOT-143	SOT-143-4	SOT-143-4	SOT-143	SOT-143-4
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All substitute parts listed maintain active production status with full ROHS3 compliance and REACH unaffected certification. Selection among equivalent parts should be based on:

Packaging format availability: APX812-46UG-7 and MIC812LUY-TR are supplied in Tape & Reel (TR) format. ADM812LARTZ-REEL7 and STM812LW16F are also supplied in Tape & Reel format. MAX812LEUS+T is available in Cut Tape (CT) and Digi-Reel format.

Inventory levels: STM812LW16F offers the highest stock availability at 36,300 pieces. APX812-46UG-7 maintains 6,400 pieces, MIC812LUY-TR maintains 6,200 pieces, MAX812LEUS+T maintains 5,645 pieces, and ADM812LARTZ-REEL7 maintains 3,121 pieces.

Supplier device package designation: SOT-143 and SOT-143-4 variants are electrically and mechanically equivalent for this application, with both maintaining identical TO-253-4 and TO-253AA footprints.

Frequently Asked Questions (FAQ)

Q: Can APX812-46UG-7 be directly replaced with any of the listed substitutes?

A: Yes. All listed parts are parametric equivalents meeting identical electrical specifications: single-channel monitoring, 4.63V threshold, push-pull totem pole output, active high reset, 140ms minimum timeout, and -40°C to 85°C operating range. All maintain TO-253-4 / TO-253AA package compatibility and surface mount configuration.

Q: What is the difference between SOT-143 and SOT-143-4 package designations?

A: Both designations refer to the same physical package footprint (TO-253-4, TO-253AA) used in this application. The "-4" suffix in SOT-143-4 indicates a 4-pin configuration, which is standard for all listed parts. No design changes are required when substituting between these designations.

Q: Are there any compliance or certification differences between the substitute parts?

A: No. All parts maintain identical ROHS3 compliance, REACH unaffected status, MSL 1 (unlimited) moisture sensitivity rating, and active product status. No additional qualification or testing is required for substitution.

Q: Which substitute part should be selected for highest availability?

A: STM812LW16F from STMicroelectronics offers the highest inventory level at 36,300 pieces in stock, while maintaining all electrical and mechanical equivalence to the APX812-46UG-7.

Q: Does packaging format (Tape & Reel vs. Cut Tape) affect electrical performance?

A: No. Packaging format affects only handling, storage, and assembly logistics. Electrical and mechanical specifications remain identical regardless of packaging format. Selection should be based on assembly equipment compatibility and supply chain requirements.

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