MIC812JU TR Equivalent & Substitute Parts

Part Overview

The MIC812JU TR 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 features push-pull totem pole output configuration with a 4V voltage threshold and 140ms minimum reset timeout. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. Substitute parts must maintain identical electrical characteristics and mechanical compatibility to ensure direct replacement capability.

Substiute Parts

MIC812JU TR

Microchip TechnologyIn Stock: 6222MIC812JU TR Datasheet

Current PartRFQ

MIC812JUY-TR

Microchip TechnologyIn Stock: 930MIC812JUY-TR Datasheet

DirectRFQ

APX812-44UG-7

Diodes IncorporatedIn Stock: 6393APX812-44UG-7 Datasheet

MFR RecommendedRFQ

APX812-40UG-7

Diodes IncorporatedIn Stock: 4355APX812-40UG-7 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MIC812JU TR are classified based on strict parameter alignment within the power management supervisor category. The substitution logic is determined by the following critical parameters:

Primary Substitution Criteria:

• Single-channel voltage monitoring capability
• 4V voltage threshold (or manufacturer-specified equivalent threshold)
• Push-pull totem pole output configuration
• Active high reset logic
• 140ms minimum reset timeout
• SOT-143 package / TO-253-4, TO-253AA case
• Surface mount configuration
• Operating temperature range -40°C ~ 85°C

Substitution Categories:

Direct Manufacturer Substitute: MIC812JUY-TR maintains identical electrical specifications and packaging as the main part, with the distinction of active product status and RoHS3 compliance. This part is sourced from the same manufacturer (Microchip Technology) and represents the current production equivalent.

Manufacturer-Recommended Equivalent: APX812-44UG-7 (Diodes Incorporated) meets all core functional requirements with a voltage threshold of 4.38V, which falls within acceptable tolerance for 4V threshold applications. This part carries active product status and RoHS3 compliance.

Parametric Equivalent: APX812-40UG-7 (Diodes Incorporated) provides exact parameter matching at 4V voltage threshold, identical output configuration, and equivalent package specifications. This part is actively produced and RoHS3 compliant.

Parameter Comparison

Engineering Selection Recommendations

For Immediate Replacement (Same Manufacturer): MIC812JUY-TR is the direct substitute from Microchip Technology. This part maintains identical electrical specifications and packaging while offering active product status and RoHS3 compliance, eliminating the regulatory constraints of the obsolete MIC812JU TR.

For Cross-Manufacturer Substitution: APX812-40UG-7 provides exact parameter matching with 4V voltage threshold and is the preferred parametric equivalent. This part is actively produced by Diodes Incorporated and carries RoHS3 compliance certification.

For Threshold-Tolerant Applications: APX812-44UG-7 is suitable for applications where a 4.38V threshold is acceptable within system design margins. This manufacturer-recommended equivalent is actively produced and RoHS3 compliant.

All substitute parts maintain identical functional characteristics, package specifications, and environmental operating ranges. Selection should prioritize active product status and RoHS3 compliance for new designs and long-term system support.

Frequently Asked Questions (FAQ)

Q: Can MIC812JUY-TR be used as a direct replacement for MIC812JU TR? A: Yes. MIC812JUY-TR is the direct manufacturer substitute with identical electrical specifications, output configuration, package type (SOT-143), and operating temperature range. The primary differences are active product status and RoHS3 compliance.

Q: What is the difference between APX812-40UG-7 and APX812-44UG-7? A: Both parts are manufactured by Diodes Incorporated and share identical output configuration, reset logic, and package specifications. The distinction is the voltage threshold: APX812-40UG-7 operates at 4V (exact match to MIC812JU TR), while APX812-44UG-7 operates at 4.38V. Selection depends on system threshold requirements.

Q: Are all substitute parts compatible with the SOT-143 package footprint? A: Yes. All substitute parts use the SOT-143 package with TO-253-4 and TO-253AA case designations, ensuring mechanical and electrical compatibility with existing PCB layouts designed for MIC812JU TR.

Q: Do substitute parts meet RoHS compliance requirements? A: MIC812JUY-TR, APX812-40UG-7, and APX812-44UG-7 are all RoHS3 compliant. The original MIC812JU TR is RoHS non-compliant due to its obsolete status.

Q: What is the reset timeout specification for substitute parts? A: All substitute parts maintain the 140ms minimum reset timeout specification, ensuring equivalent timing behavior in power-on reset and supervisor applications.

Q: Can these parts be used interchangeably in existing designs? A: Yes, provided the voltage threshold specification is compatible with system requirements. APX812-40UG-7 and MIC812JUY-TR are direct electrical equivalents at 4V. APX812-44UG-7 requires verification that a 4.38V threshold is acceptable for the application.