DMTH4004LPS-13 Equivalent & Substitute Parts

Part Overview

The DMTH4004LPS-13 is an N-Channel MOSFET manufactured by Diodes Incorporated, rated for 40V drain-to-source voltage with continuous drain current capabilities of 26A at Ta and 100A at Tc. This device is housed in a PowerDI5060-8 surface mount package and is qualified to AEC-Q101 automotive standards. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across critical parameters including drain-to-source voltage, gate threshold voltage, on-resistance characteristics, and surface mount package compatibility.

Substiute Parts

DMTH4004LPS-13

Diodes IncorporatedIn Stock: 3142DMTH4004LPS-13 Datasheet

Current PartRFQ

FDMC8321L

onsemiIn Stock: 1720FDMC8321L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DMTH4004LPS-13 is determined by equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Drain-to-source voltage rating (Vdss) must equal or exceed 40V
• Gate threshold voltage (Vgs(th)) must match at specified test conditions
• Maximum gate voltage (Vgs Max) must be ±20V or greater
• On-resistance (Rds On) characteristics must support equivalent current handling at specified gate drive voltages
• Gate charge (Qg) and input capacitance (Ciss) must be compatible with existing gate drive circuitry

Mechanical Compatibility Criteria:

• Surface mount package type must be 8-PowerTDFN or equivalent footprint
• Mounting type must be surface mount
• Moisture sensitivity level must be MSL 1 or lower

Compliance and Status Criteria:

• Product status must be active
• RoHS3 compliance required
• REACH unaffected status required

The FDMC8321L from onsemi meets these substitution criteria with matching Vdss (40V), compatible Vgs(th) (3V @ 250µA), equivalent gate drive voltage range (4.5V to 10V), and identical 8-PowerTDFN package configuration.

Parameter Comparison

Engineering Selection Recommendations

DMTH4004LPS-13 (Primary Selection)

The DMTH4004LPS-13 is the primary component specification. This part is actively manufactured by Diodes Incorporated and carries AEC-Q101 automotive qualification. The device supports higher continuous drain current at Tc (100A versus 49A) and higher maximum power dissipation at Tc (138W versus 40W), making it suitable for applications requiring maximum thermal performance and current handling capacity. The extended operating temperature range to 175°C provides additional thermal margin in high-temperature environments.

FDMC8321L (Substitute Selection)

The FDMC8321L from onsemi is an active substitute part with equivalent electrical characteristics for gate drive and switching performance. This part maintains identical Vdss (40V), Vgs(th) (3V @ 250µA), and gate drive voltage specifications (4.5V to 10V). The 8-PowerTDFN package footprint is mechanically identical, enabling direct board-level substitution without layout modification.

The FDMC8321L exhibits lower gate charge (61 nC versus 82.2 nC) and lower input capacitance (3900 pF versus 4508 pF), resulting in reduced gate drive power requirements and faster switching transitions. However, the continuous drain current ratings are lower (22A Ta, 49A Tc versus 26A Ta, 100A Tc), and the maximum power dissipation at Tc is reduced (40W versus 138W). The maximum operating temperature is 150°C versus 175°C.

Selection between these parts depends on application current and thermal requirements. Applications operating below 22A continuous drain current at Ta and 49A at Tc, with thermal environments not exceeding 150°C, can utilize the FDMC8321L. Applications requiring the full current and thermal performance of the DMTH4004LPS-13 must use the primary part.

Both parts maintain ROHS3 compliance, unlimited moisture sensitivity rating (MSL 1), and REACH unaffected status, ensuring regulatory compatibility across equivalent applications.

Frequently Asked Questions (FAQ)

Q: Can the FDMC8321L directly replace the DMTH4004LPS-13 in all applications?

A: The FDMC8321L is mechanically and electrically compatible for gate drive and switching characteristics. However, substitution is limited by current and thermal ratings. The FDMC8321L supports maximum continuous drain current of 22A at Ta and 49A at Tc, compared to 26A at Ta and 100A at Tc for the DMTH4004LPS-13. Applications operating within these current limits and thermal environments not exceeding 150°C can use the FDMC8321L. Applications requiring higher current or thermal performance must use the DMTH4004LPS-13.

Q: Are the packages mechanically identical?

A: Yes. Both the DMTH4004LPS-13 and FDMC8321L use the 8-PowerTDFN surface mount package. The footprint, pin configuration, and mounting requirements are identical, enabling direct board-level substitution without PCB layout modification.

Q: What are the differences in gate charge between these parts?

A: The DMTH4004LPS-13 has a maximum gate charge of 82.2 nC at 10V, while the FDMC8321L has a maximum gate charge of 61 nC at 10V. The lower gate charge of the FDMC8321L results in reduced gate drive power consumption and faster switching transitions. Gate drive circuits designed for the DMTH4004LPS-13 will operate with improved performance margins when driving the FDMC8321L.

Q: What is the impact of the lower input capacitance in the FDMC8321L?

A: The FDMC8321L has an input capacitance of 3900 pF at 20V, compared to 4508 pF for the DMTH4004LPS-13. Lower input capacitance reduces the capacitive load on gate drive circuits, resulting in lower gate drive power dissipation and faster switching response. This characteristic is beneficial in high-frequency switching applications.

Q: Are both parts suitable for automotive applications?

A: The DMTH4004LPS-13 carries AEC-Q101 automotive qualification. The FDMC8321L does not list AEC-Q101 qualification in the provided specifications. For applications requiring automotive qualification, the DMTH4004LPS-13 is the specified part. The FDMC8321L may be used in non-automotive applications or where automotive qualification is not a requirement.

Q: What is the maximum operating temperature difference between these parts?

A: The DMTH4004LPS-13 operates to a maximum junction temperature of 175°C, while the FDMC8321L operates to 150°C. Applications operating in thermal environments approaching or exceeding 150°C require the DMTH4004LPS-13 to maintain specified performance margins.

Q: Do both parts have the same RoHS and REACH compliance status?

A: Yes. Both the DMTH4004LPS-13 and FDMC8321L are ROHS3 compliant and REACH unaffected. Both parts have moisture sensitivity level MSL 1 (unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Q: What is the on-resistance specification for each part?

A: Both parts specify a maximum on-resistance of 2.5 mOhm at 10V gate voltage. The DMTH4004LPS-13 specifies this value at 50A drain current, while the FDMC8321L specifies this value at 22A drain current. At equivalent gate drive voltages, both parts exhibit the same on-resistance characteristic, ensuring equivalent switching losses at comparable current levels.