TCM812SERCTR Equivalent & Substitute Parts

Part Overview

The TCM812SERCTR is a single-channel power management supervisor IC manufactured by Microchip Technology, designed for reset and power-on reset applications in embedded systems. This device operates as a push-pull, totem pole output supervisor with a 2.93V threshold voltage and 140ms minimum reset timeout. The TCM812SERCTR is classified as obsolete, making identification of active equivalent and substitute parts essential for ongoing design support, production continuity, and system maintenance.

Key Parameters

Parameter	Value
Manufacturer Part Number	TCM812SERCTR
Manufacturer	Microchip Technology
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 High
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
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution eligibility for the TCM812SERCTR is determined by strict parametric matching across the following critical criteria:

Mandatory Matching Parameters:

Single-channel voltage monitoring configuration
2.93V threshold voltage
Push-pull, totem pole output topology
Active high reset logic
140ms minimum reset timeout
Operating temperature range: -40°C ~ 85°C
Surface mount technology
TO-253-4 / TO-253AA package compatibility
SOT-143 or SOT-143-4 supplier device package
ROHS3 compliance
MSL 1 rating
REACH unaffected status

All identified substitute parts meet these parameters without exception. Substitution is based solely on functional and electrical equivalence within the power management supervisor category.

Parameter Comparison

Part Number	Manufacturer	Product Status	Voltage Threshold	Output Type	Reset Logic	Reset Timeout	Operating Temp	Package	RoHS Status
TCM812SERCTR	Microchip Technology	Obsolete	2.93V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C ~ 85°C	TO-253-4, TO-253AA (SOT-143)	ROHS3
MIC812SUY-TR	Microchip Technology	Active	2.93V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C ~ 85°C	TO-253-4, TO-253AA (SOT-143)	ROHS3
ADM812SARTZ-REEL	Analog Devices Inc.	Active	2.93V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C ~ 85°C	TO-253-4, TO-253AA (SOT-143-4)	ROHS3
ADM812SARTZ-REEL7	Analog Devices Inc.	Active	2.93V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C ~ 85°C	TO-253-4, TO-253AA (SOT-143-4)	ROHS3
APX812-29UG-7	Diodes Incorporated	Active	2.93V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C ~ 85°C	TO-253-4, TO-253AA (SOT-143)	ROHS3
MAX812SEUS+T	Analog Devices Inc./Maxim Integrated	Active	2.93V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C ~ 85°C	TO-253-4, TO-253AA (SOT-143-4)	ROHS3
STM812SW16F	STMicroelectronics	Active	2.93V	Push-Pull, Totem Pole	Active High	140ms Min	-40°C ~ 85°C	TO-253-4, TO-253AA (SOT-143-4)	ROHS3

Engineering Selection Recommendations

All identified substitute parts are classified as active products, providing long-term availability and production support compared to the obsolete TCM812SERCTR. Selection among equivalent parts should prioritize:

Product Status Advantage: MIC812SUY-TR, ADM812SARTZ-REEL, ADM812SARTZ-REEL7, APX812-29UG-7, MAX812SEUS+T, and STM812SW16F are all active products with confirmed inventory levels, ensuring supply chain continuity.

Compliance Certification: All substitute parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 moisture sensitivity rating, meeting regulatory and environmental requirements equivalent to the original TCM812SERCTR.

Packaging and Inventory: Substitute parts are available in multiple packaging formats (Tape & Reel, Cut Tape & Digi-Reel) with inventory quantities ranging from 1,320 to 36,200 units, supporting both prototype and production-volume requirements.

Manufacturer Diversity: Substitute options span multiple manufacturers including Microchip Technology, Analog Devices Inc., Diodes Incorporated, and STMicroelectronics, providing design flexibility and supply chain redundancy.

Frequently Asked Questions (FAQ)

Q: Can TCM812SERCTR be directly replaced with any of these substitute parts?

A: Yes. All listed substitute parts are parametric equivalents meeting identical electrical specifications: 2.93V threshold voltage, push-pull totem pole output, active high reset logic, 140ms minimum reset timeout, and -40°C to 85°C operating temperature range. Physical package compatibility (TO-253-4, TO-253AA) and SOT-143/SOT-143-4 footprints are maintained across all substitutes.

Q: What is the difference between SOT-143 and SOT-143-4 packages?

A: Both SOT-143 and SOT-143-4 designations refer to the same physical package footprint (TO-253-4, TO-253AA) used in this product category. The "-4" designation in some part numbers indicates a 4-pin configuration. All parts listed are compatible with identical PCB layouts.

Q: Why is the TCM812SERCTR obsolete?

A: The TCM812SERCTR has reached end-of-life status. Active equivalent products from multiple manufacturers provide identical functionality with ongoing production support and supply availability.

Q: Are there inventory differences among substitute parts?

A: Yes. Inventory levels vary: APX812-29UG-7 (36,200 pcs), TCM812SERCTR (36,100 pcs), STM812SW16F (9,400 pcs), ADM812SARTZ-REEL (6,876 pcs), MIC812SUY-TR (3,708 pcs), ADM812SARTZ-REEL7 (2,794 pcs), and MAX812SEUS+T (1,320 pcs). Selection should account for project timeline and volume requirements.

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

A: Yes. All substitute parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity ratings, matching the regulatory profile of the original TCM812SERCTR.

Q: Can packaging format affect substitution eligibility?

A: No. Packaging format (Tape & Reel, Cut Tape & Digi-Reel) affects logistics and handling but does not impact electrical performance or PCB compatibility. All parts use identical TO-253-4 / TO-253AA physical packages.

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