MIC38HC42BN Equivalent & Substitute Parts

Part Overview

The MIC38HC42BN is an offline switch IC from Microchip Technology designed for power management applications. This device functions as a converter controller supporting multiple topologies including Boost, Buck, Flyback, and Forward configurations, operating at 500kHz switching frequency. The MIC38HC42BN is classified as obsolete, making identification of active equivalent parts essential for new designs and production continuity. Substitute parts must maintain identical electrical specifications and package compatibility to ensure direct replacement capability.

Substiute Parts

MIC38HC42BN

Microchip TechnologyIn Stock: 1132MIC38HC42BN Datasheet

Current PartRFQ

MIC38HC42YN

Microchip TechnologyIn Stock: 1988MIC38HC42YN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MIC38HC42BN is determined by strict equivalence across the following critical parameters:

• Package Compatibility: 8-DIP (0.300", 7.62mm) through-hole mounting
• Electrical Specifications: 9V ~ 20V supply voltage, 14.5V startup voltage, 500kHz switching frequency, 96% duty cycle
• Functional Topology: Support for Boost, Buck, Flyback, and Forward converter topologies
• Output Isolation: Isolated configuration
• Control Architecture: Frequency control with internal switching capability
• Temperature Range: -40°C to 150°C junction temperature

The MIC38HC42YN qualifies as a direct substitute based on complete parameter alignment across all specified electrical and mechanical characteristics.

Parameter Comparison

Engineering Selection Recommendations

The MIC38HC42YN is the direct equivalent for MIC38HC42BN replacement. Both parts share identical electrical and mechanical specifications, ensuring pin-for-pin compatibility and functional equivalence in offline switch converter applications.

The primary distinction between these parts is product status and regulatory compliance. The MIC38HC42BN is obsolete, while the MIC38HC42YN maintains active production status. Additionally, the MIC38HC42YN achieves ROHS3 compliance, whereas the MIC38HC42BN is RoHS non-compliant. For new designs and applications requiring regulatory compliance with current environmental standards, the MIC38HC42YN is the appropriate selection.

Both parts are supplied by Microchip Technology with equivalent inventory availability, supporting seamless integration into existing designs or new production implementations.

Frequently Asked Questions (FAQ)

Q: Can MIC38HC42YN directly replace MIC38HC42BN in existing designs?

A: Yes. The MIC38HC42YN is a direct pin-for-pin and functional equivalent. All electrical parameters, package dimensions, and operating characteristics are identical, enabling direct substitution without circuit modification.

Q: What is the primary reason to transition from MIC38HC42BN to MIC38HC42YN?

A: The MIC38HC42BN is classified as obsolete. The MIC38HC42YN is the active equivalent part from Microchip Technology, ensuring continued availability and support. Additionally, MIC38HC42YN meets ROHS3 compliance requirements.

Q: Are there packaging differences between these parts?

A: Both parts use 8-DIP (0.300", 7.62mm) through-hole packages. The MIC38HC42YN is supplied in tube packaging, while the MIC38HC42BN packaging specification is not detailed. This does not affect electrical or mechanical compatibility.

Q: What converter topologies are supported by these parts?

A: Both MIC38HC42BN and MIC38HC42YN support Boost, Buck, Flyback, and Forward converter topologies with isolated output configuration and 500kHz switching frequency.

Q: Are the operating temperature ranges identical?

A: Yes. Both parts operate across -40°C to 150°C junction temperature range, supporting equivalent thermal performance in offline switch applications.