TSM4436CS Equivalent & Substitute Parts

Part Overview

The TSM4436CS is an N-Channel power MOSFET manufactured by Taiwan Semiconductor Corporation, rated for 60V drain-to-source voltage with 8A continuous drain current at 25°C. This device is housed in an 8-SOP surface mount package and is designed for applications requiring moderate power dissipation up to 2.5W. The part maintains Active product status with full RoHS3 compliance and REACH unaffected classification. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part becomes unavailable or when alternative packaging or performance characteristics are required.

Substiute Parts

TSM4436CS

Taiwan Semiconductor CorporationIn Stock: 15203TSM4436CS Datasheet

Current PartRFQ

FDS5351

onsemiIn Stock: 15460FDS5351 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TSM4436CS is determined by strict equivalence across the following critical parameters:

Voltage Rating Equivalence: The substitute part must maintain a Drain to Source Voltage (Vdss) rating of 60V to ensure safe operation within the same circuit topology and voltage stress conditions.

Package Compatibility: The substitute part must utilize the 8-SOIC (0.154", 3.90mm Width) surface mount package to ensure mechanical and electrical compatibility with existing PCB layouts and assembly processes.

FET Type and Technology: The substitute must be an N-Channel MOSFET with Metal Oxide technology to maintain functional equivalence in switching and amplification applications.

Operating Temperature Range: The substitute must support the -55°C to 150°C (TJ) operating temperature range to ensure reliability across the same environmental conditions.

Compliance Standards: The substitute must maintain RoHS3 compliance and REACH unaffected status to satisfy regulatory and supply chain requirements.

Current and Resistance Characteristics: While the substitute may differ in continuous drain current (Id) and on-state resistance (Rds On), these parameters must remain within acceptable ranges for the intended application circuit. The FDS5351 substitute exhibits 6.1A continuous drain current and 35 mOhm on-state resistance, representing acceptable performance variation for most switching applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection Criteria:

The TSM4436CS and FDS5351 are functionally equivalent N-Channel MOSFETs sharing identical voltage ratings (60V Vdss), package geometry (8-SOIC), and operating temperature range (-55°C to 150°C). Both devices maintain Active product status with full RoHS3 compliance and REACH unaffected classification, ensuring regulatory compliance and long-term supply chain viability.

Substitution Suitability:

The FDS5351 serves as a direct substitute for the TSM4436CS in applications where the continuous drain current requirement does not exceed 6.1A. The FDS5351 exhibits superior power dissipation capability (5W versus 2.5W), making it suitable for higher thermal load scenarios. The on-state resistance values are comparable (35 mOhm versus 36 mOhm), ensuring similar conduction losses in switching applications.

Packaging Considerations:

Both devices utilize identical 8-SOIC surface mount packaging with 0.154" (3.90mm) width, enabling direct PCB layout compatibility without redesign. The TSM4436CS is supplied in Tape & Reel (TR) format, while the FDS5351 is available in Cut Tape (CT) and Digi-Reel® formats. Selection between these packaging options depends on assembly process requirements and procurement volume.

Application-Specific Factors:

Selection between the TSM4436CS and FDS5351 depends on circuit current requirements and thermal management strategy. Applications requiring continuous drain currents above 6.1A must utilize the TSM4436CS. Applications with lower current demands or requiring enhanced thermal performance may benefit from the FDS5351's higher power dissipation rating. Both devices are suitable for switching, amplification, and power management applications within the specified voltage and temperature ranges.

Frequently Asked Questions (FAQ)

Q: Can the FDS5351 directly replace the TSM4436CS in all applications?

A: The FDS5351 is a direct substitute for applications where the continuous drain current does not exceed 6.1A. The TSM4436CS is rated for 8A continuous drain current; applications requiring currents between 6.1A and 8A must use the TSM4436CS. Both devices share identical voltage ratings, package geometry, and operating temperature ranges, ensuring compatibility in circuit design and PCB layout.

Q: What are the key differences between the TSM4436CS and FDS5351?

A: The primary differences are continuous drain current (8A versus 6.1A), power dissipation rating (2.5W versus 5W), gate charge (16 nC versus 27 nC), and input capacitance (1100 pF versus 1310 pF). The FDS5351 offers higher power dissipation capability and lower gate charge, while the TSM4436CS provides higher current handling. On-state resistance values are comparable (36 mOhm versus 35 mOhm).

Q: Are both devices RoHS3 compliant?

A: Yes, both the TSM4436CS and FDS5351 are RoHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and supply.

Q: Do these devices require different PCB layouts?

A: No, both devices utilize identical 8-SOIC surface mount packaging with 0.154" (3.90mm) width. PCB layouts designed for the TSM4436CS are directly compatible with the FDS5351 without modification.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging is used for high-volume automated assembly processes, while Cut Tape (CT) and Digi-Reel® formats are suitable for lower-volume production or manual assembly. The electrical and mechanical specifications of the device remain identical regardless of packaging format.

Q: Which device should be selected for thermal-constrained applications?

A: The FDS5351 is preferable for applications with thermal constraints due to its higher power dissipation rating (5W versus 2.5W). However, if continuous drain current requirements exceed 6.1A, the TSM4436CS must be used despite its lower power dissipation rating.

Q: Are both devices suitable for -55°C to 150°C operating temperature ranges?

A: Yes, both the TSM4436CS and FDS5351 are rated for -55°C to 150°C (TJ) operating temperature range, ensuring equivalent thermal performance across the full specified temperature spectrum.