APX809S-44SA-7 Equivalent & Substitute Parts

Part Overview

The APX809S-44SA-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 1560 units available in stock. Equivalent and substitute parts are identified when identical electrical parameters and mechanical compatibility are maintained across different manufacturers or packaging variants.

Key Parameters

Parameter	Value
Voltage Threshold	4.38V
Output Configuration	Push-Pull, Totem Pole
Reset Logic	Active Low
Reset Timeout	140ms Minimum
Operating Temperature Range	-40°C ~ 125°C (TA)
Package Type	SOT-23-3 (TO-236-3, SC-59)
Mounting Type	Surface Mount
Channels Monitored	1
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the APX809S-44SA-7 are qualified based on strict parametric equivalence. All identified substitutes maintain identical electrical specifications across the following critical parameters: voltage threshold (4.38V), output configuration (push-pull totem pole), reset logic (active low), reset timeout (140ms minimum), operating temperature range (-40°C to 125°C), and package form factor (SOT-23-3). All substitutes are surface-mount devices with single-channel voltage monitoring capability. Substitution eligibility is further confirmed by matching compliance certifications (ROHS3, REACH Unaffected) and moisture sensitivity classification (MSL 1).

The three qualified substitutes represent different manufacturers within the power management supervisor IC category: Analog Devices Inc. (ADM809MARTZ-REEL7), Microchip Technology (TCM809MVNB713), and Diodes Incorporated (APX809S-44SR-7). The APX809S-44SR-7 variant differs only in packaging configuration (reel type designation) while maintaining identical electrical performance.

Parameter Comparison

Parameter	APX809S-44SA-7	APX809S-44SR-7	ADM809MARTZ-REEL7	TCM809MVNB713
Manufacturer	Diodes Incorporated	Diodes Incorporated	Analog Devices Inc.	Microchip Technology
Voltage Threshold	4.38V	4.38V	4.38V	4.38V
Output Type	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	SOT-23-3	SOT-23-3	SOT-23-3	SOT-23-3
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Channels Monitored	1	1	1	1
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
Inventory Availability	1560 Pcs	667 Pcs	39790 Pcs	35200 Pcs

Engineering Selection Recommendations

All four parts listed in this reference maintain active production status and full ROHS3 compliance with REACH Unaffected classification. Selection between the APX809S-44SA-7 and its substitutes should be based on inventory availability and supply chain requirements rather than electrical performance, as all parts are parametrically identical.

The APX809S-44SA-7 (1560 units in stock) and APX809S-44SR-7 (667 units in stock) are both Diodes Incorporated products and differ only in tape reel packaging configuration. The ADM809MARTZ-REEL7 from Analog Devices Inc. offers the highest inventory availability at 39790 units, while the TCM809MVNB713 from Microchip Technology provides 35200 units in stock. All parts share identical electrical specifications, package form factor, and compliance certifications, making them directly interchangeable at the circuit design level.

Frequently Asked Questions (FAQ)

Q: Can the APX809S-44SR-7 be used as a direct replacement for the APX809S-44SA-7?

A: Yes. Both parts are manufactured by Diodes Incorporated and maintain identical electrical parameters, voltage threshold (4.38V), output configuration (push-pull totem pole), reset logic (active low), reset timeout (140ms minimum), and operating temperature range (-40°C to 125°C). The designation difference refers to tape reel packaging configuration only.

Q: Are the Analog Devices and Microchip substitutes electrically compatible with the original APX809S-44SA-7?

A: Yes. The ADM809MARTZ-REEL7 and TCM809MVNB713 are parametrically equivalent across all critical electrical specifications: voltage threshold, output type, reset logic, reset timeout, and operating temperature range. All three parts use the identical SOT-23-3 package form factor.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by matching voltage threshold (4.38V), output configuration (push-pull totem pole), reset logic (active low), reset timeout (140ms minimum), operating temperature range (-40°C to 125°C), package type (SOT-23-3), and compliance certifications (ROHS3, REACH Unaffected, MSL 1).

Q: Does the SOT-23-3 package designation remain consistent across all substitutes?

A: Yes. All four parts use the SOT-23-3 package form factor, also designated as TO-236-3 or SC-59. This ensures mechanical and electrical compatibility at the PCB level without requiring design modifications.

Q: Are there any differences in moisture sensitivity or handling requirements between these parts?

A: No. All four parts carry an MSL rating of 1 (Unlimited), indicating identical moisture sensitivity classification and handling requirements throughout the supply chain and manufacturing process.

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