APX809S-40SA-7 Equivalent & Substitute Parts

Part Overview

The APX809S-40SA-7 is a single-channel power management supervisor IC manufactured by Diodes Incorporated. This device functions as a reset/power-on reset controller with push-pull totem pole output configuration, designed for monitoring power supply voltages in embedded systems and industrial applications. The part is currently in active production status with 2283 units available in stock. Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or manufacturing transitions while maintaining identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Manufacturer Part Number	APX809S-40SA-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 Low
Reset Timeout	140ms Minimum
Operating Temperature Range	-40°C ~ 125°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)
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the APX809S-40SA-7 are qualified based on strict parametric equivalence across the following critical specifications:

Single-channel voltage monitoring capability
4V voltage threshold setting
Push-pull totem pole output configuration
Active low reset logic
140ms minimum reset timeout duration
Operating temperature range of -40°C to 125°C
SOT-23-3 package / TO-236-3 physical form factor
Surface mount technology compatibility
ROHS3 compliance and MSL Level 1 rating

All identified substitute parts maintain identical electrical performance characteristics and mechanical compatibility with the primary part number. Substitution is valid across manufacturers when these parameters are matched without deviation.

Parameter Comparison

Parameter	APX809S-40SA-7 (Diodes)	APX809S-40SR-7 (Diodes)	ADM809JARTZ-REEL7 (Analog Devices)	TCM809JVNB713 (Microchip)
Manufacturer	Diodes Incorporated	Diodes Incorporated	Analog Devices Inc.	Microchip Technology
Type	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
Voltage - Threshold	4V	4V	4V	4V
Output Configuration	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole
Reset Logic	Active Low	Active Low	Active Low	Active Low
Reset Timeout	140ms Minimum	140ms Minimum	140ms Minimum	140ms Minimum
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active
Current Inventory	2283 Pcs	15100 Pcs	9342 Pcs	5100 Pcs

Engineering Selection Recommendations

All substitute parts listed maintain active production status with confirmed availability. Each part carries ROHS3 compliance certification and MSL Level 1 rating, meeting environmental and reliability standards for industrial and commercial applications. The APX809S-40SR-7 from Diodes Incorporated offers the highest current inventory level at 15100 units, providing supply chain flexibility. The ADM809JARTZ-REEL7 from Analog Devices and TCM809JVNB713 from Microchip represent cross-manufacturer alternatives with equivalent parametric specifications. Selection among these parts should be based on procurement lead times, supplier relationships, and inventory availability requirements rather than electrical performance differentiation, as all parts are parametrically identical.

Frequently Asked Questions (FAQ)

Q: Can APX809S-40SR-7 be used as a direct replacement for APX809S-40SA-7?

A: Yes. Both parts are manufactured by Diodes Incorporated and share identical electrical specifications including 4V threshold voltage, push-pull totem pole output, active low reset logic, and 140ms minimum reset timeout. The difference in part number suffix reflects packaging or reel configuration only, not functional parameters.

Q: Are the Analog Devices ADM809JARTZ-REEL7 and Microchip TCM809JVNB713 truly equivalent?

A: Yes, within the scope of the specified parameters. Both parts monitor a single voltage channel at 4V threshold with push-pull totem pole output, active low reset logic, and 140ms minimum reset timeout. All operate across the -40°C to 125°C temperature range in SOT-23-3 packages. Cross-manufacturer substitution is valid when these parameters match.

Q: What packaging differences exist between these parts?

A: The APX809S-40SA-7 is supplied in Tape & Reel (TR) format. The APX809S-40SR-7 is also supplied in Tape & Reel (TR) format. The ADM809JARTZ-REEL7 and TCM809JVNB713 are supplied in Cut Tape (CT) & Digi-Reel® format. All parts use identical SOT-23-3 physical packages suitable for surface mount assembly.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. All parts listed are ROHS3 compliant, carry MSL Level 1 (Unlimited) moisture sensitivity ratings, and maintain active production status. REACH status is unaffected for all parts, and all carry the same ECCN and HTSUS classifications.

Q: Can these parts be used interchangeably in existing PCB designs?

A: Yes. All parts use identical SOT-23-3 package geometry and pin configuration. No PCB layout modifications are required for substitution. Pin-for-pin compatibility is maintained across all listed alternatives.

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