LM810M3-4.63 Equivalent & Substitute Parts

Part Overview

The LM810M3-4.63 is a single-channel power management supervisor IC manufactured by Texas Instruments, designed for push-pull, totem pole output reset control with a 4.63V voltage threshold. This device operates across the industrial temperature range of -40°C to 105°C and is packaged in SOT-23-3 surface mount configuration. The main part is currently in Last Time Buy status, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Part Number	LM810M3-4.63
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	-40°C to 105°C (TA)
Package / Case	TO-236-3, SC-59, SOT-23-3
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the LM810M3-4.63 is determined by strict equivalence across the following critical parameters:

Voltage Threshold: Must match 4.63V exactly
Output Configuration: Must be Push-Pull, Totem Pole
Reset Logic: Must be Active High
Reset Timeout: Must be 140ms Minimum
Number of Voltages Monitored: Must be 1 channel
Package / Case: Must be SOT-23-3 (TO-236-3, SC-59)
Mounting Type: Must be Surface Mount
RoHS and Environmental Compliance: Must maintain ROHS3 compliance and MSL 1 rating

Parts are grouped into three categories: direct manufacturer equivalents from Texas Instruments, parametric equivalents from alternative manufacturers with identical electrical specifications, and manufacturer-recommended alternatives that maintain functional compatibility within the specified parameter set.

Parameter Comparison

Part Number	Manufacturer	Voltage Threshold	Output	Reset Logic	Reset Timeout	Operating Temp	Package	Product Status	Inventory
LM810M3-4.63	Texas Instruments	4.63V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C to 105°C	SOT-23-3	Last Time Buy	2029 Pcs
LM810M3-4.63/NOPB	Texas Instruments	4.63V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C to 105°C	SOT-23-3	Active	5013 Pcs
LM810M3X-4.63/NOPB	Texas Instruments	4.63V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C to 105°C	SOT-23-3	Active	3400 Pcs
APX810S-46SA-7	Diodes Incorporated	4.63V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C to 125°C	SOT-23-3	Active	8689 Pcs
MAX810LTRG	onsemi	4.63V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C to 105°C	SOT-23-3	Obsolete	47300 Pcs
MIC810LUY-TR	Microchip Technology	4.63V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C to 85°C	SOT-23-3	Active	13100 Pcs

Engineering Selection Recommendations

Primary Selection: LM810M3-4.63/NOPB (Texas Instruments) is the direct equivalent with Active product status and highest inventory availability (5013 pcs). This part maintains identical electrical and thermal specifications to the original LM810M3-4.63 while offering superior procurement continuity.

Secondary Selection: LM810M3X-4.63/NOPB (Texas Instruments) provides parametric equivalence with Tape & Reel packaging and Active status, suitable for high-volume automated assembly operations.

Cross-Manufacturer Alternatives: APX810S-46SA-7 (Diodes Incorporated) and MIC810LUY-TR (Microchip Technology) are functionally equivalent with identical voltage threshold, output configuration, and reset characteristics. APX810S-46SA-7 offers extended operating temperature range (-40°C to 125°C) and highest inventory (8689 pcs). MIC810LUY-TR operates to -40°C to 85°C with substantial inventory (13100 pcs).

Avoid: MAX810LTRG (onsemi) is marked Obsolete and should not be selected for new designs despite high inventory levels.

All recommended substitutes maintain ROHS3 compliance and MSL 1 rating, ensuring environmental and regulatory compatibility with the original specification.

Frequently Asked Questions (FAQ)

Q: Can LM810M3-4.63/NOPB be used as a direct replacement for LM810M3-4.63?

A: Yes. Both parts are manufactured by Texas Instruments with identical electrical specifications, voltage threshold (4.63V), output configuration (Push-Pull, Totem Pole), reset logic (Active High), and operating temperature range (-40°C to 105°C). The /NOPB designation indicates lead-free, RoHS-compliant packaging. LM810M3-4.63/NOPB is the recommended direct equivalent.

Q: What is the difference between LM810M3-4.63/NOPB and LM810M3X-4.63/NOPB?

A: Both parts are electrically identical with matching voltage thresholds and reset characteristics. The primary difference is packaging format: LM810M3-4.63/NOPB is supplied in Cut Tape (CT) & Digi-Reel format, while LM810M3X-4.63/NOPB is supplied in Tape & Reel (TR) format. Select based on assembly process requirements.

Q: Can cross-manufacturer parts like APX810S-46SA-7 or MIC810LUY-TR replace the LM810M3-4.63?

A: Yes, provided the operating temperature range is acceptable for your application. APX810S-46SA-7 (Diodes Incorporated) operates to 125°C and MIC810LUY-TR (Microchip Technology) operates to 85°C, compared to the original 105°C specification. All three maintain identical voltage threshold (4.63V), output configuration, reset logic, and reset timeout. Verify thermal requirements before selection.

Q: Why is MAX810LTRG listed if it is Obsolete?

A: MAX810LTRG is included for reference in existing designs currently using this part. It maintains electrical equivalence with the LM810M3-4.63 but should not be selected for new designs due to obsolete status. Migrate to Active alternatives such as LM810M3-4.63/NOPB or APX810S-46SA-7.

Q: Are all substitute parts in the same SOT-23-3 package?

A: Yes. All listed substitutes use the SOT-23-3 package (also designated TO-236-3 or SC-59). This ensures mechanical and electrical compatibility without PCB redesign.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts listed maintain ROHS3 compliance and Moisture Sensitivity Level (MSL) 1 rating, matching the original LM810M3-4.63 specification. This ensures regulatory and environmental compatibility across all alternatives.

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