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SSM3K15ACT(TPL3) Equivalent & Substitute Parts
Part Overview
The SSM3K15ACT(TPL3) is an N-Channel MOSFET manufactured by Toshiba Semiconductor and Storage, part of the U-MOSIII series. This surface mount device operates at 30V drain-to-source voltage with a continuous drain current rating of 100mA and maximum power dissipation of 100mW. The component is classified as Active product status and is RoHS Compliant, making it suitable for modern electronic applications requiring compact switching solutions in the CST3 package configuration.
Equivalent and substitute parts are identified to address inventory availability, supply chain continuity, and design flexibility while maintaining electrical and mechanical compatibility within specified parameter tolerances.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| FET Type | N-Channel | — |
| Technology | MOSFET (Metal Oxide) | — |
| Drain to Source Voltage (Vdss) | 30 | V |
| Current - Continuous Drain (Id) @ 25°C | 100 | mA |
| Rds On (Max) @ Id, Vgs | 3.6 | Ohm @ 10mA, 4V |
| Vgs(th) (Max) @ Id | 1.5 | V @ 100µA |
| Power Dissipation (Max) | 100 | mW (Ta) |
| Operating Temperature (TJ) | 150 | °C |
| Mounting Type | Surface Mount | — |
| Package / Case | SC-101, SOT-883 | — |
| RoHS Status | RoHS Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the SSM3K15ACT(TPL3) are identified based on strict electrical and mechanical parameter alignment. The substitution logic is organized into two categories:
Direct Equivalent (Identical Electrical Specifications): The SSM3K15ACT,L3F maintains identical electrical characteristics across all critical parameters: 30V Vdss, 100mA continuous drain current, 3.6 Ohm Rds On, and 100mW power dissipation. Both devices share the same U-MOSIII series designation, CST3 package configuration, and SC-101/SOT-883 case format. This part qualifies as a direct substitute with no performance trade-offs.
Similar Functional Equivalent (Enhanced Current Rating): The PMZB550UNEYL from Nexperia USA Inc. shares the core voltage specification (30V Vdss) and N-Channel MOSFET technology but operates at significantly higher continuous drain current (590mA versus 100mA) and increased power dissipation capability (310mW at Ta, 1.67W at Tc). This part is classified as a similar functional equivalent suitable for applications requiring higher current capacity within the same voltage class. The package differs (DFN1006B-3 versus CST3), requiring PCB layout verification.
Key Parameters Determining Substitution Eligibility:
- Drain to Source Voltage (Vdss): 30V (mandatory match)
- FET Type: N-Channel (mandatory match)
- Technology: MOSFET (Metal Oxide) (mandatory match)
- Mounting Type: Surface Mount (mandatory match)
- RoHS Compliance Status: Active product status required
Parameter Comparison
| Parameter | SSM3K15ACT(TPL3) | SSM3K15ACT,L3F | PMZB550UNEYL |
|---|---|---|---|
| Manufacturer | Toshiba Semiconductor and Storage | Toshiba Semiconductor and Storage | Nexperia USA Inc. |
| FET Type | N-Channel | N-Channel | N-Channel |
| Technology | MOSFET (Metal Oxide) | MOSFET (Metal Oxide) | MOSFET (Metal Oxide) |
| Drain to Source Voltage (Vdss) | 30 V | 30 V | 30 V |
| Current - Continuous Drain (Id) @ 25°C | 100 mA (Ta) | 100 mA (Ta) | 590 mA (Ta) |
| Rds On (Max) @ Id, Vgs | 3.6 Ohm @ 10mA, 4V | 3.6 Ohm @ 10mA, 4V | 670 mOhm @ 590mA, 4.5V |
| Vgs(th) (Max) @ Id | 1.5 V @ 100µA | 1.5 V @ 100µA | 950 mV @ 250µA |
| Vgs (Max) | ±20 V | ±20 V | ±8 V |
| Input Capacitance (Ciss) (Max) @ Vds | 13.5 pF @ 3 V | 13.5 pF @ 3 V | 30.3 pF @ 15 V |
| Power Dissipation (Max) | 100 mW (Ta) | 100 mW (Ta) | 310 mW (Ta), 1.67 W (Tc) |
| Operating Temperature (TJ) | 150 °C | 150 °C | -55 °C ~ 150 °C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | SC-101, SOT-883 | SC-101, SOT-883 | 3-XFDFN |
| Supplier Device Package | CST3 | CST3 | DFN1006B-3 |
| RoHS Status | RoHS Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Active | Active | Active |
Engineering Selection Recommendations
SSM3K15ACT,L3F Selection Criteria: The SSM3K15ACT,L3F is the primary direct equivalent for the SSM3K15ACT(TPL3). Both components maintain identical electrical specifications and package configurations. Selection of this substitute is appropriate when the original part number is unavailable while maintaining design performance without modification. Both parts carry Active product status and meet RoHS3 compliance requirements. Inventory availability of 20,400 units for the SSM3K15ACT,L3F provides supply chain continuity.
PMZB550UNEYL Selection Criteria: The PMZB550UNEYL is suitable for applications where increased current capacity is required within the 30V voltage class. This part is selected when design specifications permit higher continuous drain current (590mA) and enhanced power dissipation capability. The different package format (DFN1006B-3 versus CST3) requires PCB layout redesign and footprint verification. This substitute is appropriate for new designs or redesigns where the enhanced current rating provides system-level benefits. The part carries Active product status and ROHS3 compliance. Operating temperature range extends to -55°C, providing broader environmental coverage compared to the original part.
Compliance and Certification Basis: All substitute parts maintain Active product status and RoHS compliance, meeting regulatory requirements for modern electronic applications. Moisture Sensitivity Level 1 (Unlimited) across all parts ensures consistent handling and storage protocols. ECCN classification EAR99 applies to the Toshiba parts, while HTSUS codes reflect appropriate tariff classifications for each manufacturer.
Frequently Asked Questions (FAQ)
Q: Can SSM3K15ACT,L3F be used as a direct replacement for SSM3K15ACT(TPL3)?
A: Yes. The SSM3K15ACT,L3F is a direct equivalent with identical electrical specifications, including 30V Vdss, 100mA continuous drain current, 3.6 Ohm Rds On, and 100mW power dissipation. Both parts use the same CST3 package and SC-101/SOT-883 case format. No circuit modifications are required.
Q: What are the key differences between SSM3K15ACT(TPL3) and PMZB550UNEYL?
A: The PMZB550UNEYL provides higher continuous drain current (590mA versus 100mA) and greater power dissipation capability (310mW at Ta, 1.67W at Tc). Both maintain 30V Vdss. The package differs: PMZB550UNEYL uses DFN1006B-3 format instead of CST3. Gate voltage maximum is ±8V for PMZB550UNEYL versus ±20V for the original part. PCB layout modification is required when substituting with PMZB550UNEYL.
Q: Is the PMZB550UNEYL suitable for applications designed for the SSM3K15ACT(TPL3)?
A: The PMZB550UNEYL is electrically compatible at the voltage level (30V Vdss) but operates at significantly higher current capacity. It is suitable for applications where the original 100mA rating is insufficient and higher current handling is beneficial. PCB footprint and layout must be verified due to package differences. Gate voltage rating of ±8V must be confirmed compatible with circuit drive requirements.
Q: What packaging considerations apply when selecting substitute parts?
A: SSM3K15ACT(TPL3) and SSM3K15ACT,L3F both use CST3 package (SC-101, SOT-883 case), allowing direct PCB footprint compatibility. PMZB550UNEYL uses DFN1006B-3 package (3-XFDFN case), requiring PCB redesign and new footprint layout. Verify PCB assembly equipment compatibility with the selected package format.
Q: Are all substitute parts RoHS compliant?
A: Yes. SSM3K15ACT(TPL3) is RoHS Compliant. Both SSM3K15ACT,L3F and PMZB550UNEYL are ROHS3 Compliant, meeting current regulatory standards. All parts maintain Moisture Sensitivity Level 1 (Unlimited), ensuring consistent handling protocols.
Q: What is the inventory status for substitute parts?
A: SSM3K15ACT,L3F has 20,400 units in stock. PMZB550UNEYL has 11,356 units in stock. Both parts are available as new original components, providing supply chain options when the original SSM3K15ACT(TPL3) (929 units in stock) is insufficient for production requirements.
Q: Can gate voltage differences affect circuit operation?
A: Yes. SSM3K15ACT(TPL3) and SSM3K15ACT,L3F both support ±20V gate voltage. PMZB550UNEYL supports ±8V maximum gate voltage. Verify that circuit drive voltage does not exceed ±8V when using PMZB550UNEYL. Threshold voltage specifications also differ: 1.5V @ 100µA for Toshiba parts versus 950mV @ 250µA for PMZB550UNEYL.
Q: What operating temperature ranges apply to each part?
A: SSM3K15ACT(TPL3) and SSM3K15ACT,L3F both operate to 150°C junction temperature. PMZB550UNEYL operates from -55°C to 150°C junction temperature, providing extended low-temperature capability. Select PMZB550UNEYL for applications requiring operation below ambient conditions.
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