TCM811SERCTR Equivalent & Substitute Parts

Part Overview

The TCM811SERCTR is a Power Management Integrated Circuit (PMIC) supervisor from Microchip Technology, classified as a Simple Reset/Power-On Reset device. It monitors a single voltage channel with a 2.93V threshold and provides push-pull, totem pole output with active-low reset functionality. The device is packaged in SOT-143 surface mount configuration and operates across the industrial temperature range of -40°C to 85°C.

The TCM811SERCTR is currently listed as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this supervisor IC.

Key Parameters

Parameter	TCM811SERCTR Value
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 Low
Reset Timeout	140ms Minimum
Operating Temperature Range	-40°C to 85°C (TA)
Mounting Type	Surface Mount
Package/Case	TO-253-4, TO-253AA
Supplier Device Package	SOT-143
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution of the TCM811SERCTR is determined by strict equivalence across the following critical parameters:

Primary Equivalence Criteria:

Single voltage channel monitoring capability
2.93V voltage threshold (±tolerance as specified by manufacturer)
Push-pull, totem pole output configuration
Active-low reset logic
140ms minimum reset timeout
Surface mount packaging in TO-253-4 or TO-253AA case
SOT-143 or SOT-143-4 supplier device package
Operating temperature range of -40°C to 85°C minimum
ROHS3 compliance and REACH unaffected status

Substitute Categories:

Parametric Equivalents (Full Functional Match): Parts meeting all primary equivalence criteria with identical or compatible electrical specifications. These include MIC811SUY-TR, ADM811SARTZ-REEL, ADM811SARTZ-REEL7, APX811-29UG-7, MAX811SEUS+T, and STM811SW16F.

Manufacturer Recommended Alternatives (Extended Temperature or Modified Timeout): Parts that maintain core supervisor functionality but with variations in reset timeout or extended operating temperature range. These include MAX6443US29L+T, MAX6804US29D2+T, and MAX6804US29D3+T. These alternatives are suitable when system requirements permit extended temperature operation or alternative reset timing specifications.

Parameter Comparison

Part Number	Manufacturer	Product Status	Voltage Threshold	Reset Timeout	Operating Temp Range	Package	Inventory (Pcs)
TCM811SERCTR	Microchip Technology	Obsolete	2.93V	140ms Min	-40°C to 85°C	SOT-143	1,350
MIC811SUY-TR	Microchip Technology	Active	2.93V	140ms Min	-40°C to 85°C	SOT-143	10,172
ADM811SARTZ-REEL	Analog Devices Inc.	Active	2.93V	140ms Min	-40°C to 85°C	SOT-143-4	16,300
ADM811SARTZ-REEL7	Analog Devices Inc.	Active	2.93V	140ms Min	-40°C to 85°C	SOT-143-4	45,200
APX811-29UG-7	Diodes Incorporated	Active	2.93V	140ms Min	-40°C to 85°C	SOT-143	30,300
MAX811SEUS+T	Analog Devices Inc./Maxim Integrated	Active	2.93V	140ms Min	-40°C to 85°C	SOT-143-4	25,100
STM811SW16F	STMicroelectronics	Active	2.93V	140ms Min	-40°C to 85°C	SOT-143-4	1,526
MAX6443US29L+T	Analog Devices Inc./Maxim Integrated	Active	2.925V	140ms Min	-40°C to 85°C	SOT-143-4	17,300
MAX6804US29D2+T	Analog Devices Inc./Maxim Integrated	Active	2.93V	20ms Min	-40°C to 125°C	SOT-143-4	5,800
MAX6804US29D3+T	Analog Devices Inc./Maxim Integrated	Active	2.93V	100ms Min	-40°C to 125°C	SOT-143-4	6,520

Engineering Selection Recommendations

Direct Replacement (Highest Compatibility):

MIC811SUY-TR from Microchip Technology is the primary direct replacement. It maintains identical electrical specifications and operating parameters as the TCM811SERCTR while offering active product status and significantly higher inventory availability (10,172 units). Both devices are manufactured by Microchip Technology, ensuring consistent design philosophy and documentation.

Parametric Equivalents with Extended Availability:

ADM811SARTZ-REEL7 from Analog Devices Inc. provides the highest inventory availability (45,200 units) among all substitutes while maintaining full parametric equivalence. APX811-29UG-7 from Diodes Incorporated offers 30,300 units in stock with identical specifications. Both are suitable for applications where supply chain continuity is prioritized.

Extended Temperature Operation:

MAX6804US29D3+T extends the operating temperature range to -40°C to 125°C while maintaining the 2.93V threshold and 100ms reset timeout. This variant is appropriate for applications requiring enhanced thermal performance beyond the standard industrial range.

Compliance and Regulatory Status:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the original TCM811SERCTR. All devices are classified as surface mount with SOT-143 or SOT-143-4 packaging, ensuring mechanical and thermal compatibility with existing PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can I use MAX6804US29D3+T as a direct replacement for TCM811SERCTR?

A: MAX6804US29D3+T is functionally compatible but with specification variations. It maintains the 2.93V threshold and push-pull output configuration but features a 100ms minimum reset timeout (versus 140ms) and extends the operating temperature range to -40°C to 125°C. Use this part only if your application permits the shorter reset timeout and can benefit from extended temperature operation.

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

A: Both parts are parametrically identical with 2.93V threshold, 140ms reset timeout, and -40°C to 85°C operating range. The primary difference is packaging designation and inventory availability. ADM811SARTZ-REEL7 offers significantly higher stock (45,200 units versus 16,300 units).

Q: Are SOT-143 and SOT-143-4 packages mechanically compatible?

A: Both package designations refer to the same physical form factor (TO-253-4, TO-253AA case). The "-4" designation in SOT-143-4 indicates a 4-pin configuration, which is standard for all listed supervisor devices. PCB footprints are compatible across all substitutes.

Q: Which substitute offers the best supply chain security?

A: ADM811SARTZ-REEL7 provides the highest inventory availability at 45,200 units. For long-term supply assurance, this part offers the most robust stock position among all active alternatives.

Q: Can I substitute parts with different reset timeout specifications?

A: Reset timeout substitution is application-dependent. The TCM811SERCTR specifies 140ms minimum. MAX6804US29D2+T (20ms) and MAX6804US29D3+T (100ms) feature shorter timeouts. Verify that your system design accommodates the alternative reset timing before implementation.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the original TCM811SERCTR specifications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message