MIC810SU-TR Equivalent & Substitute Parts

Part Overview

The MIC810SU-TR is a single-channel power management supervisor IC manufactured by Microchip Technology, designed for reset and power-on reset applications in embedded systems. This device features push-pull totem pole output configuration with a 2.93V threshold and 140ms minimum reset timeout. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines that maintain electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Manufacturer Part Number	MIC810SU-TR
Manufacturer	Microchip Technology
Category	Power Management (PMIC)
Package / Case	TO-236-3, SC-59, SOT-23-3
Type	Simple Reset/Power-On Reset
Number of Voltages Monitored	1
Voltage - Threshold	2.93V
Output	Push-Pull, Totem Pole
Reset	Active High
Reset Timeout	140ms Minimum
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MIC810SU-TR is determined by strict alignment of the following critical parameters:

Package / Case: TO-236-3, SC-59, SOT-23-3 (physical and electrical pin compatibility)
Voltage - Threshold: 2.93V (circuit operation point)
Output Configuration: Push-Pull, Totem Pole (functional output behavior)
Reset Logic: Active High (signal polarity)
Reset Timeout: 140ms Minimum (timing specification)
Number of Voltages Monitored: 1 (single-channel supervision)
Operating Temperature Range: Minimum -40°C to 85°C (thermal operating envelope)

Substitute parts are grouped into two categories:

Direct Manufacturer Substitutes (MFR Recommended): Parts with identical electrical specifications across all critical parameters and active product status.

Parametric Equivalents: Parts meeting all critical electrical parameters but with different product status classifications or extended temperature ranges.

Parameter Comparison

Part Number	Manufacturer	Voltage Threshold	Reset Timeout	Operating Temp	Output Type	Product Status	RoHS Status
MIC810SU-TR	Microchip Technology	2.93V	140ms Min	-40°C ~ 85°C	Push-Pull, Totem Pole	Discontinued	Non-compliant
STM810SWX6F	STMicroelectronics	2.93V	140ms Min	-40°C ~ 85°C	Push-Pull, Totem Pole	Active	ROHS3 Compliant
ADM810SARTZ-REEL7	Analog Devices Inc.	2.93V	140ms Min	-40°C ~ 125°C	Push-Pull, Totem Pole	Active	ROHS3 Compliant
ADM1812-10ARTZ-RL7	Analog Devices Inc.	4.35V	100ms Min	-40°C ~ 105°C	Push-Pull, Totem Pole	Active	ROHS3 Compliant
MAX810SEUR+T	Analog Devices Inc./Maxim Integrated	2.93V	140ms Min	-40°C ~ 105°C	Push-Pull, Totem Pole	Active	ROHS3 Compliant
MAX6327UR29+T	Analog Devices Inc./Maxim Integrated	2.93V	100ms Min	-40°C ~ 85°C	Push-Pull, Totem Pole	Active	ROHS3 Compliant
APX810-29SAG-7	Diodes Incorporated	2.93V	140ms Min	-40°C ~ 85°C	Push-Pull, Totem Pole	Not For New Designs	ROHS3 Compliant
APX810-29SRG-7	Diodes Incorporated	2.93V	140ms Min	-40°C ~ 85°C	Push-Pull, Totem Pole	Not For New Designs	ROHS3 Compliant

Engineering Selection Recommendations

Preferred Direct Substitutes (Identical Electrical Specifications, Active Status)

STM810SWX6F (STMicroelectronics) and MAX810SEUR+T (Analog Devices Inc./Maxim Integrated) provide direct electrical equivalence to the MIC810SU-TR with identical voltage threshold (2.93V), reset timeout (140ms minimum), and output configuration. Both parts are in active production status with ROHS3 compliance, making them suitable for new designs and ongoing production requirements.

Extended Temperature Range Alternative

ADM810SARTZ-REEL7 (Analog Devices Inc.) maintains identical electrical specifications while offering extended operating temperature range (-40°C to 125°C) compared to the original part's -40°C to 85°C range. This part is active and ROHS3 compliant, providing thermal margin for applications requiring higher temperature operation.

Parametric Equivalents with Specification Variations

ADM1812-10ARTZ-RL7 features a higher voltage threshold (4.35V) and shorter reset timeout (100ms minimum), making it suitable only for applications where these parameter differences are acceptable. MAX6327UR29+T operates with identical voltage threshold but reduced reset timeout (100ms minimum), requiring verification that the shorter timeout meets application timing requirements.

APX810-29SAG-7 and APX810-29SRG-7 (Diodes Incorporated) meet all critical electrical parameters but carry "Not For New Designs" status, limiting their use to legacy system maintenance or inventory management scenarios.

Compliance Consideration

The original MIC810SU-TR is RoHS non-compliant. All recommended substitutes are ROHS3 compliant, aligning with current regulatory requirements for new product development and manufacturing.

Frequently Asked Questions (FAQ)

Q: Can ADM1812-10ARTZ-RL7 be used as a direct replacement for MIC810SU-TR?

A: ADM1812-10ARTZ-RL7 is not a direct replacement. While it maintains the same package, output configuration, and reset logic, it specifies a 4.35V voltage threshold and 100ms minimum reset timeout, compared to the MIC810SU-TR's 2.93V threshold and 140ms timeout. Use this part only if your application circuit is designed for these different parameters.

Q: What is the difference between STM810SWX6F and MAX810SEUR+T?

A: Both parts provide identical electrical specifications to the MIC810SU-TR (2.93V threshold, 140ms reset timeout, push-pull totem pole output). The primary difference is packaging format: STM810SWX6F is supplied in Cut Tape & Digi-Reel format, while MAX810SEUR+T is supplied in Cut Tape & Digi-Reel format. Both are active products with ROHS3 compliance. Selection depends on your procurement and assembly process requirements.

Q: Why is ADM810SARTZ-REEL7 recommended despite its extended temperature range?

A: ADM810SARTZ-REEL7 maintains all electrical specifications identical to the MIC810SU-TR (2.93V threshold, 140ms reset timeout) while offering extended operating temperature capability (-40°C to 125°C versus -40°C to 85°C). This provides thermal margin for applications operating in elevated ambient conditions without requiring circuit redesign. The extended range does not compromise compatibility with designs specified for the original -40°C to 85°C range.

Q: Are APX810-29SAG-7 and APX810-29SRG-7 suitable for new product designs?

A: Both APX810 variants meet all critical electrical parameters but carry "Not For New Designs" status. These parts are appropriate for sustaining production of existing products or legacy system maintenance. For new designs, select from active-status alternatives such as STM810SWX6F, MAX810SEUR+T, or ADM810SARTZ-REEL7.

Q: Does the package designation SOT23R on APX810-29SRG-7 affect compatibility?

A: APX810-29SRG-7 specifies SOT23R package designation while maintaining TO-236-3 and SC-59 equivalence. This represents a package variant within the same physical footprint family. Verify PCB land pattern compatibility with your assembly documentation before selection.

Q: What compliance advantage do substitute parts offer over the original MIC810SU-TR?

A: All recommended substitute parts are ROHS3 compliant, whereas the original MIC810SU-TR is RoHS non-compliant. This compliance alignment is essential for products subject to current environmental regulations and supply chain requirements. Substitution enables compliance with modern manufacturing and distribution standards.

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