APX810-40SAG-7 Equivalent & Substitute Parts

Part Overview

The APX810-40SAG-7 is a single-channel power management supervisor IC manufactured by Diodes Incorporated, designed for simple reset and power-on reset applications. This component features push-pull totem pole output configuration in a compact SOT-23-3 surface mount package. The part is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product roadmap. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support long-term product availability for existing applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	APX810-40SAG-7
Manufacturer	Diodes Incorporated
Category	Power Management (PMIC)
Type	Simple Reset/Power-On Reset
Number of Voltages Monitored	1
Voltage - Threshold	4V
Output Configuration	Push-Pull, Totem Pole
Reset Logic	Active High
Reset Timeout	140ms Minimum
Operating Temperature Range	-40°C ~ 85°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

Substitute parts for the APX810-40SAG-7 are classified based on strict parameter alignment across the following critical criteria:

Core Substitution Parameters:

Voltage threshold: 4V (mandatory match)
Output configuration: Push-Pull, Totem Pole (mandatory match)
Reset logic: Active High (mandatory match)
Reset timeout: 140ms Minimum (mandatory match)
Number of voltages monitored: 1 (mandatory match)
Package compatibility: SOT-23-3 or SC-70-3 (pin-compatible packages)
Mounting type: Surface Mount (mandatory match)
RoHS3 compliance (mandatory match)

Grouping Categories:

Direct Substitutes (Same Manufacturer - Diodes Incorporated):

APX810S-40SA-7: Active product status with extended operating temperature range (-40°C ~ 125°C)
APX810-40SRG-7: Parametric equivalent with SOT23R package variant

Cross-Manufacturer Substitutes (Equivalent Electrical Performance):

ADM810JARTZ-REEL7 (Analog Devices Inc.): Active product, extended temperature range
TCM810JVNB713 (Microchip Technology): Active product, SOT-23-3 package, extended temperature range
TCM810JENB713 (Microchip Technology): Active product, SOT-23-3 package
MIC810JUY-TR (Microchip Technology): Parametric equivalent, same temperature range as main part
TCM810JVLB713 (Microchip Technology): Active product, SC-70-3 package variant, extended temperature range

Limited Compatibility:

MAX6800UR40D3+T (Analog Devices Inc./Maxim Integrated): Obsolete product status; reset timeout specification differs (100ms Minimum vs. 140ms Minimum); extended temperature range available

Parameter Comparison

Part Number	Manufacturer	Product Status	Voltage Threshold	Output Config	Reset Logic	Reset Timeout	Temp Range (TA)	Package	RoHS3
APX810-40SAG-7	Diodes Inc.	Not For New Designs	4V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C ~ 85°C	SOT-23-3	Yes
APX810S-40SA-7	Diodes Inc.	Active	4V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C ~ 125°C	SOT-23-3	Yes
APX810-40SRG-7	Diodes Inc.	Not For New Designs	4V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C ~ 85°C	SOT23R	Yes
ADM810JARTZ-REEL7	Analog Devices Inc.	Active	4V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C ~ 125°C	SOT-23-3	Yes
TCM810JVNB713	Microchip Technology	Active	4V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C ~ 125°C	SOT-23-3	Yes
TCM810JENB713	Microchip Technology	Active	4V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C ~ 85°C	SOT-23-3	Yes
MIC810JUY-TR	Microchip Technology	Active	4V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C ~ 85°C	SOT-23-3	Yes
TCM810JVLB713	Microchip Technology	Active	4V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C ~ 125°C	SC-70-3	Yes
MAX6800UR40D3+T	Analog Devices Inc./Maxim Integrated	Obsolete	4V	Push-Pull, Totem Pole	Active High	100ms Min	-40°C ~ 125°C	SOT-23-3	Yes

Engineering Selection Recommendations

Preferred Substitutes (Active Product Status):

APX810S-40SA-7 is the primary recommended substitute. It is manufactured by the same supplier (Diodes Incorporated), maintains identical electrical specifications, and carries Active product status. The extended operating temperature range (-40°C ~ 125°C) provides additional thermal margin compared to the original part.

ADM810JARTZ-REEL7 (Analog Devices Inc.) and TCM810JVNB713 (Microchip Technology) are qualified cross-manufacturer alternatives. Both maintain full electrical parameter equivalence, carry Active product status, and offer extended temperature ranges. These parts support supply chain diversification while maintaining design compatibility.

Secondary Substitutes (Matching Temperature Range):

TCM810JENB713 and MIC810JUY-TR maintain the original -40°C ~ 85°C operating temperature specification and are suitable for applications with identical thermal requirements. Both carry Active product status.

Package Variant:

TCM810JVLB713 provides electrical equivalence in SC-70-3 package format. This part is appropriate only for designs where package footprint modification is acceptable and PCB layout can accommodate the smaller SC-70 form factor.

Not Recommended:

MAX6800UR40D3+T carries Obsolete product status and specifies a reduced reset timeout (100ms Minimum vs. 140ms Minimum). This part introduces functional risk and should not be selected for new applications or long-term supply planning.

APX810-40SRG-7 carries "Not For New Designs" status and offers no advantage over APX810S-40SA-7.

Frequently Asked Questions (FAQ)

Q: Can APX810S-40SA-7 be used as a direct replacement for APX810-40SAG-7?

A: Yes. APX810S-40SA-7 is electrically and functionally equivalent. It maintains the same 4V threshold, push-pull totem pole output, active high reset logic, and 140ms minimum reset timeout. The extended operating temperature range (-40°C ~ 125°C) is a superset of the original specification (-40°C ~ 85°C), making it suitable for all applications where the original part was used. Both parts use SOT-23-3 packaging with identical pinout.

Q: What is the difference between SOT-23-3 and SC-70-3 packages?

A: Both are surface mount packages with three pins and identical electrical pinout. SC-70-3 is physically smaller than SOT-23-3. TCM810JVLB713 in SC-70-3 package can substitute electrically but requires PCB layout modification. Use only if your design can accommodate the smaller footprint.

Q: Why does MAX6800UR40D3+T have a different reset timeout specification?

A: MAX6800UR40D3+T specifies 100ms Minimum reset timeout, compared to 140ms Minimum for the APX810-40SAG-7. This functional difference means the part does not meet the original design specification and introduces timing risk. This part is not recommended for substitution.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 Compliant status, matching the original APX810-40SAG-7 specification.

Q: Which substitute offers the best long-term availability?

A: APX810S-40SA-7, ADM810JARTZ-REEL7, and TCM810JVNB713 all carry Active product status, indicating ongoing manufacturer support and production. These three parts are recommended for designs requiring long-term supply assurance.

Q: Can I use a substitute part with a different operating temperature range?

A: Yes, provided your application does not require the full original temperature range. If your design operates within -40°C ~ 85°C, any substitute with equal or extended range is acceptable. If your design requires operation above 85°C, select only substitutes rated to -40°C ~ 125°C.

Q: What is the difference between "Direct Substitute" and "Parametric Equivalent"?

A: Direct substitutes are from the same manufacturer (Diodes Incorporated) with identical part family designation. Parametric equivalents are from different manufacturers but meet all electrical and functional specifications. Both categories are suitable for substitution when product status and compliance requirements are met.

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