CMPDM302PH BK P-Channel MOSFET 30V 2.4A Equivalent & Substitute Parts

Part Overview

The CMPDM302PH BK is a P-Channel MOSFET manufactured by Central Semiconductor Corp, rated for 30V drain-to-source voltage with 2.4A continuous drain current at 25°C. The device is housed in a SOT-23F surface mount package and dissipates a maximum of 350mW. This part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support, production continuity, and component sourcing.

Substiute Parts

CMPDM302PH BK

Central Semiconductor CorpIn Stock: 780CMPDM302PH BK Datasheet

Current PartRFQ

SSM3J334R,LF

Toshiba Semiconductor and StorageIn Stock: 202253SSM3J334R,LF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CMPDM302PH BK is determined by strict equivalence across the following critical parameters:

Channel Type & Voltage Rating: The substitute must be a P-Channel MOSFET with a Vdss rating of 30V or greater to maintain voltage compatibility.

Current Rating: The substitute must support a continuous drain current (Id) equal to or exceeding 2.4A at 25°C to handle the same load conditions.

Package & Mounting: The substitute must use the SOT-23F package with surface mount configuration to ensure mechanical and electrical compatibility with existing PCB layouts.

On-Resistance (Rds On): The substitute's maximum on-resistance must not exceed the original specification to maintain switching efficiency and thermal performance.

Gate Voltage Compatibility: The substitute's maximum gate voltage (Vgs Max) must accommodate the drive voltage levels used in the original circuit.

Temperature Range: The substitute must support the operating temperature range of -55°C to 150°C (TJ).

The SSM3J334R,LF from Toshiba Semiconductor and Storage meets all these criteria and is classified as an active product with enhanced performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The CMPDM302PH BK is classified as obsolete. The SSM3J334R,LF is an active product from Toshiba Semiconductor and Storage, ensuring long-term availability, ongoing manufacturing support, and compliance with current industry standards.

Compliance & Certifications: The SSM3J334R,LF is RoHS3 compliant and REACH unaffected, meeting modern regulatory requirements for electronic components. Both parts carry an ECCN classification of EAR99 and identical HTSUS codes, indicating equivalent trade classification.

Performance Enhancement: The substitute part demonstrates improved electrical characteristics within the same package footprint. The SSM3J334R,LF provides higher continuous drain current (4A versus 2.4A), lower on-resistance (71mOhm versus 91mOhm), and greater power dissipation capability (1W versus 350mW), offering design margin and thermal headroom.

Mechanical Compatibility: Both parts use identical SOT-23F packaging with flat leads, ensuring direct PCB layout compatibility without redesign.

Availability: The SSM3J334R,LF has significantly higher inventory availability (202,200 pieces) compared to the obsolete CMPDM302PH BK (677 pieces), supporting production continuity and supply chain reliability.

Frequently Asked Questions (FAQ)

Q: Can the SSM3J334R,LF directly replace the CMPDM302PH BK without circuit modification?

A: Yes. Both devices are P-Channel MOSFETs with identical 30V Vdss ratings, SOT-23F packaging, and surface mount configuration. The SSM3J334R,LF meets or exceeds all critical electrical parameters of the original part. No circuit modification is required for direct substitution.

Q: What are the key differences between these two parts?

A: The SSM3J334R,LF offers superior performance: higher continuous drain current (4A versus 2.4A), lower on-resistance (71mOhm versus 91mOhm at different test conditions), reduced gate charge (5.9nC versus 9.6nC), lower input capacitance (280pF versus 800pF), and higher power dissipation capability (1W versus 350mW). These improvements provide better thermal performance and switching efficiency.

Q: Are there any gate voltage compatibility concerns?

A: No. The SSM3J334R,LF has a maximum gate voltage rating of ±20V, which exceeds the CMPDM302PH BK specification of 12V. This provides greater design flexibility and margin for gate drive circuits.

Q: Does the package footprint remain identical?

A: Yes. Both parts use SOT-23-3 flat leads with surface mount configuration. PCB layouts designed for the CMPDM302PH BK require no modification to accommodate the SSM3J334R,LF.

Q: What is the impact of the lower gate charge specification?

A: The SSM3J334R,LF requires less gate charge (5.9nC versus 9.6nC) to reach full conduction. This results in faster switching transitions and reduced gate drive power consumption, improving overall circuit efficiency.

Q: Are there compliance or regulatory differences?

A: The SSM3J334R,LF is RoHS3 compliant and REACH unaffected, meeting current regulatory standards. Both parts share identical ECCN (EAR99) and HTSUS classifications, indicating equivalent trade and export compliance status.

Q: Why is the SSM3J334R,LF recommended over the obsolete CMPDM302PH BK?

A: The SSM3J334R,LF is an active product with superior availability (202,200 pieces in stock), modern compliance certifications, enhanced electrical performance, and long-term manufacturing support. The obsolete status of the CMPDM302PH BK creates supply chain risk and limits future sourcing options.