TCM811LERCTR Equivalent & Substitute Parts

Part Overview

The TCM811LERCTR is a Power Management Integrated Circuit (PMIC) supervisor manufactured by Microchip Technology, designed for single-channel reset and power-on reset applications. This device operates as a push-pull, totem pole output supervisor with active-low reset functionality. The TCM811LERCTR is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support, production continuity, and system maintenance. Active alternatives with identical or compatible electrical and mechanical specifications are available from multiple manufacturers.

Key Parameters

Parameter	Value
Manufacturer Part Number	TCM811LERCTR
Manufacturer	Microchip Technology
Category	Power Management (PMIC)
Type	Simple Reset/Power-On Reset
Number of Voltages Monitored	1
Voltage - Threshold	4.63V
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
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS Code	8542.39.0001
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the TCM811LERCTR are qualified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

Voltage Threshold: 4.63V (exact match required)
Output Configuration: Push-Pull, Totem Pole (exact match required)
Reset Logic: Active Low (exact match required)
Reset Timeout: 140ms Minimum (exact match or better tolerance required)
Number of Voltages Monitored: 1 (exact match required)
Package / Case: TO-253-4, TO-253AA (exact match required)
Mounting Type: Surface Mount (exact match required)
RoHS Status: ROHS3 Compliant (compliance requirement)
Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

Acceptable Variations:

Operating Temperature Range: -40°C ~ 85°C or extended range (-40°C ~ 125°C) acceptable
Product Status: Active preferred over Obsolete for long-term availability
Supplier Device Package: SOT-143 or SOT-143-4 both acceptable
Manufacturer: Multiple qualified manufacturers (Microchip, Analog Devices, Diodes, STMicroelectronics, onsemi)

All substitute parts listed maintain full electrical and mechanical compatibility with the original TCM811LERCTR specification.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage Threshold	Output Configuration	Reset Logic	Reset Timeout	Operating Temperature	Package / Case	Product Status	Inventory Status
TCM811LERCTR	Microchip Technology	4.63V	Push-Pull, Totem Pole	Active Low	140ms Minimum	-40°C ~ 85°C	TO-253-4, TO-253AA	Obsolete	4063 Pcs
MIC811LUY-TR	Microchip Technology	4.63V	Push-Pull, Totem Pole	Active Low	140ms Minimum	-40°C ~ 85°C	TO-253-4, TO-253AA	Active	1643 Pcs
MAX6804US46D3+T	Analog Devices Inc./Maxim Integrated	4.63V	Push-Pull, Totem Pole	Active Low	100ms Minimum	-40°C ~ 125°C	TO-253-4, TO-253AA	Active	3808 Pcs
ADM811LARTZ-REEL7	Analog Devices Inc.	4.63V	Push-Pull, Totem Pole	Active Low	140ms Minimum	-40°C ~ 85°C	TO-253-4, TO-253AA	Active	30696 Pcs
APX811-46UG-7	Diodes Incorporated	4.63V	Push-Pull, Totem Pole	Active Low	140ms Minimum	-40°C ~ 85°C	TO-253-4, TO-253AA	Active	12200 Pcs
CAT811LTBI-GT3	onsemi	4.63V	Push-Pull, Totem Pole	Active Low	140ms Minimum	-40°C ~ 85°C	TO-253-4, TO-253AA	Obsolete	25908 Pcs
MAX811LEUS+T	Analog Devices Inc./Maxim Integrated	4.63V	Push-Pull, Totem Pole	Active Low	140ms Minimum	-40°C ~ 85°C	TO-253-4, TO-253AA	Active	30400 Pcs
STM811LW16F	STMicroelectronics	4.63V	Push-Pull, Totem Pole	Active Low	140ms Minimum	-40°C ~ 85°C	TO-253-4, TO-253AA	Active	17100 Pcs

Engineering Selection Recommendations

Primary Recommendation - Parametric Equivalent: MIC811LUY-TR (Microchip Technology) provides direct parametric equivalence to the TCM811LERCTR with identical electrical specifications and active product status. This part maintains the same manufacturer lineage, ensuring design continuity and documentation compatibility.

Alternative Selections - Full Parametric Equivalents:

ADM811LARTZ-REEL7 (Analog Devices Inc.) - Active status with highest inventory availability (30696 Pcs)
MAX811LEUS+T (Analog Devices Inc./Maxim Integrated) - Active status with high inventory (30400 Pcs)
STM811LW16F (STMicroelectronics) - Active status with established supply chain (17100 Pcs)
APX811-46UG-7 (Diodes Incorporated) - Active status with good inventory (12200 Pcs)

Extended Temperature Range Option: MAX6804US46D3+T (Analog Devices Inc./Maxim Integrated) offers extended operating temperature range (-40°C ~ 125°C) with faster reset timeout (100ms vs. 140ms minimum), suitable for applications requiring enhanced thermal performance.

Obsolete Status Consideration: CAT811LTBI-GT3 (onsemi) maintains full parametric equivalence but carries obsolete product status. This part is suitable only for legacy system maintenance where existing inventory is available.

All recommended parts comply with ROHS3, REACH, and MSL requirements identical to the original specification.

Frequently Asked Questions (FAQ)

Q: Can I directly substitute the TCM811LERCTR with any of the listed parts? A: Yes, all listed parts meet the critical electrical and mechanical parameters required for direct substitution. The voltage threshold (4.63V), output configuration (push-pull, totem pole), reset logic (active low), and package specifications (TO-253-4, TO-253AA) are identical across all qualified substitutes.

Q: What is the difference between the TCM811LERCTR and MIC811LUY-TR? A: Both parts are functionally identical with matching electrical specifications. The primary difference is product status: TCM811LERCTR is obsolete while MIC811LUY-TR is active. MIC811LUY-TR is the recommended direct replacement from the same manufacturer.

Q: Why does MAX6804US46D3+T have a different reset timeout (100ms vs. 140ms)? A: MAX6804US46D3+T specifies a 100ms minimum reset timeout, which is faster than the 140ms minimum of the original part. This represents improved performance and is acceptable for substitution, as the part meets or exceeds the original specification requirement.

Q: Is the extended temperature range of MAX6804US46D3+T (-40°C ~ 125°C) compatible with my design? A: Extended temperature range is a superset of the original specification (-40°C ~ 85°C) and is fully compatible. If your application operates within the original temperature range, the extended range part functions identically. If your application requires higher temperature operation, this part provides additional capability.

Q: What packaging options are available? A: All substitute parts use identical surface-mount packages: TO-253-4 or TO-253AA with SOT-143 or SOT-143-4 supplier device packages. Physical footprint and pin configuration are compatible across all listed parts.

Q: Are there any compliance or certification differences? A: All parts maintain identical compliance status: ROHS3 Compliant, REACH Unaffected, MSL 1 (Unlimited), ECCN EAR99, and HTSUS 8542.39.0001. No compliance differences exist between the original and substitute parts.

Q: Which substitute part has the best availability? A: ADM811LARTZ-REEL7 has the highest inventory availability at 30696 Pcs, followed by MAX811LEUS+T at 30400 Pcs. Both parts are active and maintain full parametric equivalence.

Q: Can I use CAT811LTBI-GT3 for new designs? A: CAT811LTBI-GT3 is classified as obsolete and is not recommended for new designs. Use active alternatives such as MIC811LUY-TR, ADM811LARTZ-REEL7, MAX811LEUS+T, STM811LW16F, or APX811-46UG-7 for long-term design support and production continuity.

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