MIC38HC43-1YM Equivalent & Substitute Parts

Part Overview

The MIC38HC43-1YM is an active DC-DC controller IC manufactured by Microchip Technology, designed for multi-topology power management applications. This device functions as a transistor driver for buck, boost, flyback, and forward converter topologies, supporting positive output configurations with isolation capability. The part is currently in active production status with 1572 units available in new original inventory.

Substitute parts are identified when they maintain identical electrical specifications, mechanical compatibility, and functional performance characteristics while potentially offering different packaging or availability options.

Substiute Parts

MIC38HC43-1YM

Microchip TechnologyIn Stock: 1674MIC38HC43-1YM Datasheet

Current PartRFQ

MIC38C43-1YM

Microchip TechnologyIn Stock: 1071MIC38C43-1YM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The MIC38C43-1YM qualifies as a parametric equivalent to the MIC38HC43-1YM based on the following substitution criteria:

Identical Electrical Specifications:

• Voltage supply range: 7.6V ~ 20V
• Maximum duty cycle: 96%
• Synchronous rectifier capability: Yes
• Control features: Frequency Control
• Operating temperature range: -40°C ~ 85°C (TA)

Identical Mechanical Specifications:

• Package type: 14-SOIC (0.154", 3.90mm Width)
• Mounting type: Surface Mount
• Pin configuration: Compatible

Identical Functional Specifications:

• Output type: Transistor Driver
• Function: Step-Up, Step-Down, Step-Up/Step-Down
• Output configuration: Positive, Isolation Capable
• Topology support: Buck, Boost, Flyback, Forward Converter
• Number of outputs: 1
• Output phases: 1

Compliance Equivalence:

• RoHS3 Compliant
• REACH Unaffected
• Moisture Sensitivity Level: 1 (Unlimited)

The primary difference is packaging format (tube vs. standard), which does not affect electrical or functional performance.

Parameter Comparison

Engineering Selection Recommendations

Both the MIC38HC43-1YM and MIC38C43-1YM are active production components from Microchip Technology with identical electrical and functional specifications. Selection between these parts should be based on:

Availability and Inventory: The MIC38HC43-1YM has 1572 units in stock, while the MIC38C43-1YM has 1021 units available. Choose based on procurement timeline and quantity requirements.

Packaging Format: The MIC38HC43-1YM uses standard packaging, while the MIC38C43-1YM is supplied in tube format. Tube packaging may affect handling procedures and automated assembly compatibility depending on production line configuration.

Compliance Certification: Both parts maintain identical RoHS3 compliance and REACH unaffected status, suitable for regulated applications without additional qualification.

Product Status: Both components are in active production, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can MIC38C43-1YM replace MIC38HC43-1YM in existing designs?

A: Yes. Both parts are electrically and functionally identical across all specified parameters including voltage supply range, duty cycle, topology support, and operating temperature. Pin configuration and package dimensions are identical.

Q: What is the difference between these two part numbers?

A: The primary difference is packaging format. The MIC38HC43-1YM uses standard packaging while the MIC38C43-1YM is supplied in tube format. This does not affect electrical performance or pin compatibility.

Q: Are there any compatibility concerns with PCB assembly?

A: No. Both parts use identical 14-SOIC surface mount packages with 0.154" width and 3.90mm dimensions. Assembly equipment and reflow profiles remain unchanged.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the MIC38HC43-1YM and MIC38C43-1YM are ROHS3 compliant, REACH unaffected, and have identical moisture sensitivity levels (MSL 1 - Unlimited).

Q: Which part should I select for new designs?

A: Selection should be based on inventory availability and packaging requirements. Both parts are active production components suitable for new designs. Verify packaging format compatibility with your assembly process.

Q: Is there a performance difference between these parts?

A: No. Both parts provide identical performance across all electrical specifications including supply voltage range (7.6V ~ 20V), maximum duty cycle (96%), synchronous rectifier capability, and frequency control features.