PT7M7811STBEX Equivalent & Substitute Parts

Part Overview

The PT7M7811STBEX is a single-channel power management supervisor IC manufactured by Diodes Incorporated, designed for reset and power-on reset applications. This device operates as a push-pull, totem pole output supervisor with active-low reset functionality. The part is currently in Last Time Buy status, making equivalent substitute parts necessary for ongoing design support and procurement planning. Substitute parts maintain identical electrical and mechanical specifications while offering active product availability from alternative manufacturers.

Key Parameters

Parameter	Value
Manufacturer Part Number	PT7M7811STBEX
Manufacturer	Diodes Incorporated
Category	Power Management (PMIC)
Type	Simple Reset/Power-On Reset
Number of Voltages Monitored	1
Voltage - Threshold	2.93V
Output Configuration	Push-Pull, Totem Pole
Reset Logic	Active Low
Reset Timeout	140ms Minimum
Operating Temperature Range	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	TO-253-4, TO-253AA
Supplier Device Package	SOT-143-4
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute parts for the PT7M7811STBEX are qualified based on strict equivalence of the following critical parameters:

Single-channel voltage monitoring configuration
2.93V threshold voltage
Push-pull, totem pole output topology
Active-low reset logic
140ms minimum reset timeout
Operating temperature range of -40°C to 85°C
Surface mount technology with SOT-143 or SOT-143-4 package compatibility
ROHS3 compliance and REACH unaffected status

All substitute parts listed maintain these specifications without deviation. Substitution is determined solely by functional and electrical equivalence within the defined parameter set.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage Threshold	Output Type	Reset Logic	Reset Timeout	Operating Temp	Package	Product Status	RoHS Status
PT7M7811STBEX	Diodes Incorporated	2.93V	Push-Pull, Totem Pole	Active Low	140ms Min	-40°C ~ 85°C	SOT-143-4	Last Time Buy	ROHS3 Compliant
APX811-29UG-7	Diodes Incorporated	2.93V	Push-Pull, Totem Pole	Active Low	140ms Min	-40°C ~ 85°C	SOT-143	Active	ROHS3 Compliant
ADM811SARTZ-REEL	Analog Devices Inc.	2.93V	Push-Pull, Totem Pole	Active Low	140ms Min	-40°C ~ 85°C	SOT-143-4	Active	ROHS3 Compliant
ADM811SARTZ-REEL7	Analog Devices Inc.	2.93V	Push-Pull, Totem Pole	Active Low	140ms Min	-40°C ~ 85°C	SOT-143-4	Active	ROHS3 Compliant
MAX811SEUS+T	Analog Devices Inc./Maxim Integrated	2.93V	Push-Pull, Totem Pole	Active Low	140ms Min	-40°C ~ 85°C	SOT-143-4	Active	ROHS3 Compliant
MIC811SUY-TR	Microchip Technology	2.93V	Push-Pull, Totem Pole	Active Low	140ms Min	-40°C ~ 85°C	SOT-143	Active	ROHS3 Compliant
STM811SW16F	STMicroelectronics	2.93V	Push-Pull, Totem Pole	Active Low	140ms Min	-40°C ~ 85°C	SOT-143-4	Active	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts are qualified equivalents based on parametric matching. Selection among substitutes should be based on:

Product Status: The PT7M7811STBEX is Last Time Buy. All substitute parts listed carry Active product status, ensuring long-term availability and supply chain continuity.

Compliance Certifications: All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the original part's regulatory standing.

Packaging Availability: Substitute parts are available in both Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging options, accommodating different procurement and assembly workflows.

Inventory Levels: Substitute parts demonstrate varying inventory availability. Selection may consider stock levels based on project timeline and volume requirements.

Frequently Asked Questions (FAQ)

Q: Can PT7M7811STBEX substitutes be used interchangeably in existing designs?

A: Yes. All listed substitute parts maintain identical electrical specifications including voltage threshold (2.93V), output topology (push-pull, totem pole), reset logic (active low), and reset timeout (140ms minimum). PCB layout and schematic compatibility is maintained across all substitutes.

Q: Are there package differences between substitute parts?

A: Substitute parts are available in SOT-143 or SOT-143-4 packages. Both package variants are mechanically compatible with TO-253-4 and TO-253AA footprints. Verify specific package designation during procurement to ensure compatibility with your PCB design.

Q: What is the difference between ADM811SARTZ-REEL and ADM811SARTZ-REEL7?

A: Both parts are electrically identical. The difference is in packaging format: ADM811SARTZ-REEL is supplied in Tape & Reel (TR), while ADM811SARTZ-REEL7 is supplied in Cut Tape (CT) & Digi-Reel® format. Select based on your assembly process requirements.

Q: Why is the original PT7M7811STBEX marked as Last Time Buy?

A: Last Time Buy status indicates the manufacturer is discontinuing this part number. Substitute parts from alternative manufacturers provide equivalent functionality and ensure design continuity beyond the original part's end-of-life date.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, matching regulatory requirements of the original part.

Q: Which substitute offers the highest inventory availability?

A: ADM811SARTZ-REEL7 from Analog Devices Inc. offers 45,200 pieces in stock, providing the highest inventory level among listed substitutes.

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