MIC803-29D4VC3-TR Equivalent & Substitute Parts

Part Overview

The MIC803-29D4VC3-TR is an active low reset supervisor IC manufactured by Microchip Technology, designed for single-channel power supply monitoring applications. This Surface Mount device operates across the industrial temperature range of -40°C to 125°C and provides open drain output configuration. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling direct replacement in circuit designs without functional compromise.

Substiute Parts

MIC803-29D4VC3-TR

Microchip TechnologyIn Stock: 2269MIC803-29D4VC3-TR Datasheet

Current PartRFQ

MAX803SEXR/V+T

Analog Devices Inc./Maxim IntegratedIn Stock: 7830MAX803SEXR/V+T Datasheet

MFR RecommendedRFQ

MAX803TEXR/V+T

Analog Devices Inc./Maxim IntegratedIn Stock: 894MAX803TEXR/V+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MIC803-29D4VC3-TR is determined by matching the following critical parameters:

• Voltage threshold setting (2.93V nominal)
• Single-channel monitoring configuration
• Open drain output architecture
• Active low reset signal
• SC-70/SOT-323 package footprint
• Surface mount technology
• ROHS3 compliance status

The identified substitute parts from Analog Devices Inc./Maxim Integrated maintain functional equivalence through identical package geometry, output topology, and reset behavior. Variations in reset timeout duration and temperature measurement reference point (TJ vs TA) do not preclude substitution when circuit design accommodates these specifications.

Parameter Comparison

Engineering Selection Recommendations

MAX803SEXR/V+T qualifies as the primary substitute for MIC803-29D4VC3-TR due to identical voltage threshold specification (2.93V), matching reset logic, and equivalent package footprint. Both parts maintain active production status and ROHS3 compliance. The MAX803SEXR/V+T carries AEC-Q100 automotive qualification, providing additional reliability assurance for applications requiring automotive-grade components.

MAX803TEXR/V+T functions as a secondary substitute option with a higher voltage threshold of 3.08V. This part is suitable only when circuit design specifications accommodate the elevated threshold voltage. Like the primary substitute, it maintains active status, ROHS3 compliance, and AEC-Q100 qualification.

Both substitute parts exhibit reduced reset timeout (140ms minimum) compared to the original specification (1.12s minimum). Circuit designs must accommodate this timing difference to ensure proper system behavior during power-on and fault conditions.

Frequently Asked Questions (FAQ)

Q: Can MAX803TEXR/V+T directly replace MIC803-29D4VC3-TR without circuit modification?

A: Direct replacement is not recommended. The MAX803TEXR/V+T specifies a 3.08V threshold versus the 2.93V threshold of the original part. Circuit design must accommodate this 0.15V difference in monitoring voltage to maintain intended system protection levels.

Q: What is the impact of the reset timeout difference between the original and substitute parts?

A: The MIC803-29D4VC3-TR specifies 1.12s minimum reset timeout, while both MAX803 substitutes specify 140ms minimum. This 8x reduction in timeout duration affects power-on reset sequencing and fault recovery timing. Circuit designs must accommodate faster reset assertion to maintain system stability.

Q: Are the substitute parts pin-compatible with the original MIC803-29D4VC3-TR?

A: Yes. Both MAX803SEXR/V+T and MAX803TEXR/V+T utilize the SC-70/SOT-323 package with identical pinout configuration, enabling direct PCB footprint compatibility.

Q: What is the difference between TJ and TA temperature specifications?

A: The original part specifies operating temperature as -40°C to 125°C (TJ), referencing junction temperature. The substitute parts specify -40°C to 125°C (TA), referencing ambient temperature. Both ranges cover the same absolute temperature limits; the measurement reference differs based on manufacturer characterization methodology.

Q: Do the substitute parts meet the same compliance requirements as the original?

A: Yes. Both MAX803SEXR/V+T and MAX803TEXR/V+T maintain ROHS3 compliance, REACH unaffected status, and identical ECCN/HTSUS classifications as the original MIC803-29D4VC3-TR.