MIC810LU-TR Equivalent & Substitute Parts

Part Overview

The MIC810LU-TR is a single-channel power management supervisor IC manufactured by Microchip Technology, housed in a SOT-23-3 package. This device functions as a simple reset/power-on reset supervisor with push-pull, totem pole output configuration and a 4.63V voltage threshold. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines that maintain the same electrical and mechanical specifications.

Key Parameters

Parameter	MIC810LU-TR Value
Manufacturer	Microchip Technology
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
Package / Case	TO-236-3, SC-59, SOT-23-3
Mounting Type	Surface Mount
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MIC810LU-TR is determined by strict adherence to the following critical parameters:

Mandatory Matching Parameters:

Voltage threshold: 4.63V
Output configuration: Push-Pull, Totem Pole
Reset logic: Active High
Number of voltages monitored: 1
Package / Case: TO-236-3, SC-59, SOT-23-3
Mounting type: Surface Mount
Supervisor type: Simple Reset/Power-On Reset

Allowable Variation Parameters:

Reset timeout: 140ms minimum or lower (100ms acceptable as tighter specification)
Operating temperature range: -40°C minimum and 85°C maximum or extended (105°C, 125°C acceptable as extended range)
Manufacturer: Different manufacturers permitted if all electrical and mechanical parameters align
Packaging format: Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® acceptable
RoHS compliance: ROHS3 compliant parts acceptable as upgrade from non-compliant original
Product status: Active parts preferred over discontinued or "Not For New Designs"

Parameter Comparison

Part Number	Manufacturer	Voltage Threshold	Output Type	Reset Logic	Reset Timeout	Operating Temp	Package	Product Status	RoHS Status
MIC810LU-TR	Microchip Technology	4.63V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C ~ 85°C	SOT-23-3	Discontinued	RoHS non-compliant
TCM810LENB713	Microchip Technology	4.63V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C ~ 85°C	SOT-23-3	Active	ROHS3 Compliant
STM810LWX6F	STMicroelectronics	4.63V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C ~ 85°C	SOT-23-3	Active	ROHS3 Compliant
ADM810LARTZ-REEL	Analog Devices Inc.	4.63V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C ~ 125°C	SOT-23-3	Active	ROHS3 Compliant
ADM810LARTZ-REEL7	Analog Devices Inc.	4.63V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C ~ 125°C	SOT-23-3	Active	ROHS3 Compliant
MAX6347UR46+T	Analog Devices Inc./Maxim Integrated	4.63V	Push-Pull, Totem Pole	Active High	100ms Min	-40°C ~ 85°C	SOT-23-3	Active	ROHS3 Compliant
MAX6800UR46D3+T	Analog Devices Inc./Maxim Integrated	4.63V	Push-Pull, Totem Pole	Active High	100ms Min	-40°C ~ 125°C	SOT-23-3	Active	ROHS3 Compliant
MAX810LEUR+T	Analog Devices Inc./Maxim Integrated	4.63V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C ~ 105°C	SOT-23-3	Active	ROHS3 Compliant
APX810-46SAG-7	Diodes Incorporated	4.63V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C ~ 85°C	SOT-23-3	Not For New Designs	ROHS3 Compliant
APX810-46SRG-7	Diodes Incorporated	4.63V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C ~ 85°C	SOT-23-3	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: TCM810LENB713

The TCM810LENB713 from Microchip Technology is the optimal direct replacement for the MIC810LU-TR. This part maintains identical electrical specifications (4.63V threshold, 140ms reset timeout, -40°C to 85°C operating range) and mechanical compatibility (SOT-23-3 package). The part is currently active in production with ROHS3 compliance, eliminating supply chain discontinuity while providing regulatory upgrade from the original non-compliant device.

Secondary Recommendations (Extended Temperature Range):

For applications requiring extended operating temperature capability, ADM810LARTZ-REEL, ADM810LARTZ-REEL7, and MAX6800UR46D3+T provide -40°C to 125°C operation while maintaining all other critical parameters. These parts are manufactured by Analog Devices Inc./Maxim Integrated and are active in production with ROHS3 compliance.

Alternative Recommendations (Faster Reset Timeout):

MAX6347UR46+T and MAX6800UR46D3+T feature 100ms minimum reset timeout, which is a tighter specification than the original 140ms minimum. These parts are suitable for applications where faster reset response is beneficial or required. Both are active products with ROHS3 compliance.

Cross-Manufacturer Options:

STM810LWX6F (STMicroelectronics) and APX810-46SRG-7 (Diodes Incorporated) provide functionally equivalent alternatives with identical threshold voltage, output configuration, and reset logic. Both are active products with ROHS3 compliance. APX810-46SAG-7 is available but marked "Not For New Designs" and should be avoided for new applications.

Compliance Consideration:

All recommended substitute parts carry ROHS3 compliance, representing a regulatory upgrade from the original MIC810LU-TR. This compliance status is beneficial for applications subject to environmental regulations and long-term supply chain sustainability.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a different reset timeout specification?

A: Yes. The original MIC810LU-TR specifies 140ms minimum reset timeout. Substitute parts with 100ms minimum reset timeout (such as MAX6347UR46+T and MAX6800UR46D3+T) are acceptable because they provide a tighter specification. The reset circuit will function correctly with faster timeout values. However, parts with longer reset timeouts should not be used as they may not meet the original design requirements.

Q: Are substitute parts with extended temperature ranges compatible?

A: Yes. The original MIC810LU-TR operates from -40°C to 85°C. Substitute parts with extended ranges such as -40°C to 125°C (ADM810LARTZ-REEL, ADM810LARTZ-REEL7, MAX6800UR46D3+T) are fully compatible and provide additional operational margin. The part will function correctly across the original temperature range and beyond.

Q: Does the package format (Tape & Reel vs. Cut Tape) affect compatibility?

A: No. Package format differences (Tape & Reel or Cut Tape & Digi-Reel®) do not affect electrical or mechanical compatibility. These are distribution and handling formats only. The actual component package remains SOT-23-3 in all cases, ensuring identical PCB footprint and soldering requirements.

Q: Why is RoHS compliance important for substitution?

A: The original MIC810LU-TR is RoHS non-compliant. All recommended substitute parts are ROHS3 compliant, which eliminates regulatory risk for applications subject to environmental directives. This compliance upgrade is beneficial and does not introduce any technical incompatibility.

Q: Can I substitute a part from a different manufacturer?

A: Yes. STMicroelectronics (STM810LWX6F), Analog Devices Inc./Maxim Integrated (ADM810LARTZ-REEL, ADM810LARTZ-REEL7, MAX6347UR46+T, MAX6800UR46D3+T, MAX810LEUR+T), and Diodes Incorporated (APX810-46SAG-7, APX810-46SRG-7) all manufacture functionally equivalent supervisor ICs with identical threshold voltage, output configuration, and reset logic. Cross-manufacturer substitution is valid when all electrical and mechanical parameters match.

Q: What is the difference between APX810-46SAG-7 and APX810-46SRG-7?

A: Both parts are from Diodes Incorporated with identical electrical specifications. The primary difference is product status: APX810-46SAG-7 is marked "Not For New Designs," while APX810-46SRG-7 is active. For new applications, APX810-46SRG-7 is the preferred choice. The package designation difference (SOT-23-3 vs. SOT23R) reflects minor physical variations that do not affect PCB compatibility.

Q: Is the MIC842LYC5-TR a suitable substitute?

A: No. While MIC842LYC5-TR is listed in the original substitute list, it is a comparator with voltage reference (SC-70-5 package), not a supervisor IC. It does not meet the mandatory substitution criteria: different package type, different functional category, and different electrical architecture. This part is not compatible with the MIC810LU-TR application.

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