SFT1345-TL-H Equivalent & Substitute Parts

Part Overview

The SFT1345-TL-H is a P-Channel MOSFET manufactured by onsemi, rated for 100V drain-to-source voltage with 11A continuous drain current at 25°C. This device is packaged in TO-252-3 (DPAK) surface mount configuration and is classified as obsolete. Due to its obsolete product status, equivalent substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Substiute Parts

SFT1345-TL-H

onsemiIn Stock: 1347SFT1345-TL-H Datasheet

Current PartRFQ

DMP10H400SK3-13

Diodes IncorporatedIn Stock: 31002DMP10H400SK3-13 Datasheet

SimilarRFQ

ZXMP10A16KTC

Diodes IncorporatedIn Stock: 24283ZXMP10A16KTC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SFT1345-TL-H is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• FET Type: P-Channel MOSFET (Metal Oxide)
• Drain to Source Voltage (Vdss): 100V minimum
• Package / Case: TO-252-3 (DPAK) surface mount
• Gate-Source Voltage (Vgs Max): ±20V
• RoHS3 Compliance and MSL Level 1

Secondary Compatibility Factors:

• Continuous Drain Current (Id): Minimum 9A at rated conditions
• On-State Resistance (Rds On): Maximum 275 mOhm at specified Id and Vgs
• Gate Charge (Qg): Maximum 21 nC at 10V
• Input Capacitance (Ciss): Maximum 1020 pF at specified Vds
• Operating Temperature Range: Minimum 150°C (TJ)

The substitute parts listed below meet the primary substitution criteria and maintain electrical compatibility within the specified parameter ranges.

Parameter Comparison

Engineering Selection Recommendations

DMP10H400SK3-13 (Diodes Incorporated)

The DMP10H400SK3-13 is classified as an active product with current manufacturing availability. This part maintains 100V Vdss rating and delivers 9A continuous drain current, which approaches the 11A specification of the SFT1345-TL-H. The on-state resistance of 240 mOhm at 5A, 10V is lower than the original part, indicating improved switching efficiency. Gate charge of 17.5 nC is reduced, resulting in faster switching characteristics. Power dissipation capability of 42W (Tc) exceeds the original 35W (Tc) rating. Operating temperature range extends to -55°C, providing broader environmental compatibility. This part is suitable for applications where the 9A current rating is sufficient and where improved thermal performance is beneficial.

ZXMP10A16KTC (Diodes Incorporated)

The ZXMP10A16KTC is classified as an active product with current manufacturing availability. This part maintains 100V Vdss rating but delivers only 3A continuous drain current, which is significantly lower than the 11A specification of the SFT1345-TL-H. The on-state resistance of 235 mOhm at 2.1A, 10V is comparable to the DMP10H400SK3-13. Gate charge of 16.5 nC is the lowest among the three parts. Operating temperature range extends to -55°C. This part is suitable only for applications where the 3A current rating is adequate and where the lower current requirement does not compromise circuit performance.

Both substitute parts are ROHS3 compliant with MSL Level 1 rating, matching the original part's environmental and regulatory compliance status.

Frequently Asked Questions (FAQ)

Q: Can the DMP10H400SK3-13 directly replace the SFT1345-TL-H in all applications?

A: The DMP10H400SK3-13 is compatible with applications where the continuous drain current requirement does not exceed 9A. Both parts share identical 100V Vdss rating, TO-252-3 package, and ±20V Vgs maximum rating. The lower gate charge and on-state resistance of the DMP10H400SK3-13 may improve circuit performance in switching applications. Verify that your circuit design does not require the full 11A current capability of the original part.

Q: Is the ZXMP10A16KTC suitable as a substitute for the SFT1345-TL-H?

A: The ZXMP10A16KTC shares the same 100V Vdss rating and TO-252-3 package as the SFT1345-TL-H. However, its 3A continuous drain current rating is substantially lower than the original 11A specification. This part is suitable only for low-current applications where the circuit design operates within the 3A current envelope.

Q: Are all three parts compatible with the same PCB layout?

A: Yes. The SFT1345-TL-H, DMP10H400SK3-13, and ZXMP10A16KTC all use the TO-252-3 (DPAK) package with identical pin configuration and footprint. No PCB layout modifications are required for mechanical compatibility.

Q: What is the difference between Ta and Tc temperature ratings?

A: Ta refers to ambient temperature, while Tc refers to case temperature. The SFT1345-TL-H specifies 1W power dissipation at Ta and 35W at Tc. The DMP10H400SK3-13 specifies 42W at Tc. The ZXMP10A16KTC specifies 2.15W at Ta. Thermal management design should account for these differences when selecting a substitute part.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. The SFT1345-TL-H, DMP10H400SK3-13, and ZXMP10A16KTC are all ROHS3 compliant. All three parts have MSL Level 1 (Unlimited) moisture sensitivity rating, indicating identical handling and storage requirements.

Q: What is the significance of gate charge (Qg) differences between these parts?

A: Gate charge determines the energy required to switch the MOSFET on and off. The SFT1345-TL-H has 21 nC gate charge, while the DMP10H400SK3-13 has 17.5 nC and the ZXMP10A16KTC has 16.5 nC. Lower gate charge results in faster switching transitions and reduced driver power consumption. This difference is relevant in high-frequency switching applications.

Q: Can I use the DMP10H400SK3-13 in a circuit designed for 11A continuous current?

A: The DMP10H400SK3-13 is rated for 9A continuous drain current. Using this part in a circuit requiring 11A continuous current will cause the device to exceed its rated current specification, resulting in excessive heat generation and potential device failure. Select this part only if your circuit can operate within the 9A current limit.