TC428MJA Equivalent & Substitute Parts

Part Overview

The TC428MJA is a low-side gate driver IC manufactured by Microchip Technology, designed to drive N-Channel and P-Channel MOSFETs with independent channel configuration. This device operates across a 4.5V to 18V supply range and delivers 1.5A peak output current for both source and sink operations. The TC428MJA is classified as obsolete, which necessitates identification of functionally equivalent substitute components for ongoing system support and new designs requiring this gate driver topology.

Substiute Parts

TC428MJA

Microchip TechnologyIn Stock: 1207TC428MJA Datasheet

Current PartRFQ

TSC428MJA/883B

Analog Devices Inc./Maxim IntegratedIn Stock: 941TSC428MJA/883B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TC428MJA is determined by strict equivalence across the following critical parameters:

• Low-side gate driver configuration with independent dual-channel topology
• Supply voltage range: 4.5V to 18V
• Peak output current capability: 1.5A source and sink
• Logic input thresholds: VIL 0.8V, VIH 2.4V
• Input stage supporting both inverting and non-inverting configurations
• Operating temperature range: -55°C to 125°C
• 8-CDIP through-hole package format

The TSC428MJA/883B meets all electrical and mechanical substitution criteria. This part maintains functional equivalence while offering active product status and military-grade qualification under MIL-STD-883.

Parameter Comparison

Engineering Selection Recommendations

The TSC428MJA/883B qualifies as a direct functional substitute for the TC428MJA based on electrical and mechanical parameter equivalence. The substitute part offers the following distinctions:

• Active product status ensures continued availability and manufacturing support
• MIL-STD-883 military qualification provides enhanced reliability documentation
• Improved rise and fall time performance (25ns versus 30ns) represents a performance advantage
• RoHS non-compliance status differs from the main part; applications requiring RoHS3 compliance must evaluate this regulatory requirement against system constraints

Selection between the main part and substitute should prioritize product availability, regulatory compliance requirements, and qualification standards applicable to the end application.

Frequently Asked Questions (FAQ)

Q: Can the TSC428MJA/883B replace the TC428MJA in existing designs?

A: Yes. Both parts maintain identical electrical specifications for supply voltage, output current, logic thresholds, and operating temperature range. The 8-CDIP through-hole package is mechanically identical, enabling direct board-level substitution without layout modifications.

Q: What is the significance of the MIL-STD-883 qualification on the TSC428MJA/883B?

A: MIL-STD-883 qualification indicates the part has undergone military-grade testing and screening procedures. This certification is relevant for applications requiring enhanced reliability documentation and traceability but is not required for commercial or industrial applications.

Q: Does the faster rise/fall time of the TSC428MJA/883B affect circuit compatibility?

A: The 25ns rise and fall time of the substitute part is faster than the 30ns specification of the main part. This represents improved performance and does not create compatibility issues. Circuits designed for the TC428MJA will operate correctly with the faster switching characteristics of the TSC428MJA/883B.

Q: Are there RoHS compliance implications when substituting the TSC428MJA/883B?

A: The TSC428MJA/883B is RoHS non-compliant, while the TC428MJA is ROHS3 compliant. Applications subject to RoHS regulatory requirements must evaluate this difference. The substitute part is suitable for applications without RoHS mandates.

Q: Is the 8-CDIP package format standard across both parts?

A: Yes. Both the TC428MJA and TSC428MJA/883B use the 8-CDIP (0.300", 7.62mm) through-hole package. Pin configuration and footprint are identical, supporting direct component interchange on printed circuit boards.