FDMS7672 Equivalent & Substitute Parts

Part Overview

The FDMS7672 is an N-Channel 30V MOSFET manufactured by onsemi in the PowerTrench® series. This device is rated for 19A continuous drain current at 25°C (Ta) and 28A at case temperature (Tc), with a maximum drain-source voltage of 30V. The part is housed in an 8-PQFN (5x6) surface mount package and is currently in active production status.

Substitute parts are necessary when the FDMS7672 becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design requirements necessitate equivalent performance characteristics from alternative manufacturers. The substitute parts listed maintain electrical compatibility within the specified parameter ranges while offering equivalent or superior performance metrics.

Key Parameters

Parameter	Value	Unit
Drain-Source Voltage (Vdss)	30	V
Continuous Drain Current @ 25°C (Ta)	19	A
Continuous Drain Current @ Case Temp (Tc)	28	A
On-Resistance (Rds On) @ 19A, 10V	5	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	3	V
Gate Charge (Qg) @ 10V	44	nC
Input Capacitance (Ciss) @ 15V	2960	pF
Power Dissipation (Ta)	2.5	W
Power Dissipation (Tc)	48	W
Operating Temperature Range	-55 to 150	°C
Package Type	8-PQFN (5x6)	-
Mounting Type	Surface Mount	-
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution of the FDMS7672 is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

Drain-Source Voltage (Vdss): Must equal or exceed 30V
Continuous Drain Current (Id @ 25°C): Must meet or exceed 19A at Ta
On-Resistance (Rds On): Must not exceed 5mOhm at specified test conditions
Gate Threshold Voltage (Vgs(th)): Must be within ±20V maximum gate voltage specification
Operating Temperature Range: Must support -55°C to 150°C junction temperature

Mechanical Compatibility Criteria:

Mounting Type: Surface Mount required
Package Classification: 8-pin power package format (8-PQFN, 8-VSONP, 8-TDSON, or 8-HSOP acceptable)
Lead Configuration: Compatible with standard PCB footprints for 8-pin power packages

Regulatory Compliance:

RoHS3 Compliance required
Moisture Sensitivity Level 1 (Unlimited) required
REACH Unaffected or REACH Compliant status required

Substitute parts are grouped into two categories: Active Status Parts (recommended for new designs) and Obsolete Status Parts (acceptable for legacy system maintenance only).

Parameter Comparison

Parameter	FDMS7672 (onsemi)	BSC042N03MSGATMA1 (Infineon)	BSC050N03LSGATMA1 (Infineon)	BSC057N03LSGATMA1 (Infineon)	CSD17310Q5A (TI)	CSD17510Q5A (TI)	CSD17577Q5A (TI)	RS1E200GNTB (Rohm)	STL65N3LLH5 (STMicro)
Vdss (V)	30	30	30	30	30	30	30	30	30
Id @ Ta (A)	19	17	18	17	21	20	60	20	65
Id @ Tc (A)	28	93	80	71	100	100	N/A	57	65
Rds On (mOhm)	5	4.2	5	5.7	5.1	5.2	4.2	4.6	5.8
Vgs(th) (V)	3	2	2.2	2.2	1.8	2.1	1.8	2.5	1
Qg @ 10V (nC)	44	55	35	30	11.6	8.3	35	16.8	12
Ciss @ 15V (pF)	2960	4300	2800	2400	1560	1250	2310	1080	1500
Power Diss Ta (W)	2.5	2.5	2.5	2.5	3.1	3	3	3	N/A
Power Diss Tc (W)	48	57	50	45	N/A	N/A	53	25	60
Tj Range (°C)	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150
Package	8-PQFN (5x6)	PG-TDSON-8-5	PG-TDSON-8-5	PG-TDSON-8-5	8-VSONP (5x6)	8-VSONP (5x6)	8-VSONP (5x6)	8-HSOP	PowerFlat™ (5x6)
Product Status	Active	Active	Active	Obsolete	Active	Active	Active	Active	Obsolete
RoHS3 Compliant	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
MSL	1	1	1	1	1	1	1	1	1

Engineering Selection Recommendations

Active Status Substitutes (Recommended for New Designs):

The following parts are in active production and are suitable for new design implementations:

BSC042N03MSGATMA1 (Infineon OptiMOS™): This part meets the minimum continuous drain current requirement at Ta (17A) and provides superior performance at Tc (93A). The on-resistance of 4.2mOhm is lower than the FDMS7672. The gate charge of 55nC is higher, which may impact switching frequency performance. Package format is PG-TDSON-8-5, which requires PCB footprint verification for compatibility.

BSC050N03LSGATMA1 (Infineon OptiMOS™): This part provides 18A at Ta and 80A at Tc, with matching on-resistance of 5mOhm. The gate charge of 35nC is lower than the FDMS7672, offering improved switching characteristics. Input capacitance of 2800pF is comparable. This part is available in high volume (1,000,400 units in stock).

CSD17310Q5A (Texas Instruments NexFET™): This part exceeds the FDMS7672 specifications with 21A at Ta and 100A at Tc. The on-resistance of 5.1mOhm is comparable. Gate charge of 11.6nC is significantly lower, providing superior switching performance. Package is 8-VSONP (5x6), which is mechanically similar to the FDMS7672 8-PQFN format.

CSD17510Q5A (Texas Instruments NexFET™): This part provides 20A at Ta and 100A at Tc with on-resistance of 5.2mOhm. Gate charge of 8.3nC is the lowest among active substitutes, enabling higher switching frequencies. Input capacitance of 1250pF is the lowest, reducing gate drive requirements. REACH Status is listed as REACH Affected; verify compliance requirements for your application.

CSD17577Q5A and CSD17577Q5AT (Texas Instruments NexFET™): These parts provide 60A at Ta with on-resistance of 4.2mOhm. Gate charge of 35nC and input capacitance of 2310pF are moderate. CSD17577Q5AT is available in Cut Tape & Digi-Reel® packaging (3,764 units in stock). CSD17577Q5A is available in Tape & Reel format (24,121 units in stock). CSD17577Q5AT has REACH Affected status.

RS1E200GNTB (Rohm Semiconductor): This part provides 20A at Ta and 57A at Tc with on-resistance of 4.6mOhm. Gate charge of 16.8nC is moderate. Input capacitance of 1080pF is the lowest among all substitutes. Package is 8-HSOP, which differs from the FDMS7672 format and requires PCB footprint verification.

Obsolete Status Substitutes (Legacy System Maintenance Only):

BSC057N03LSGATMA1 (Infineon OptiMOS™): This part is listed as Obsolete and should not be used for new designs. It provides 17A at Ta and 71A at Tc with on-resistance of 5.7mOhm. Gate charge of 30nC is lower than the FDMS7672. Inventory availability is high (1,000,100 units), but future supply cannot be guaranteed.

STL65N3LLH5 (STMicroelectronics STripFET™ V): This part is listed as Obsolete and should not be used for new designs. It provides 65A at Tc with on-resistance of 5.8mOhm. Gate charge of 12nC is significantly lower. Package is PowerFlat™ (5x6), which differs from the FDMS7672 format. Inventory is limited (2,400 units).

Compliance and Certification Summary:

All active substitute parts maintain RoHS3 compliance and Moisture Sensitivity Level 1 (Unlimited). All parts support the full operating temperature range of -55°C to 150°C. Verify REACH compliance status for your specific application requirements, particularly for CSD17510Q5A and CSD17577Q5AT, which are listed as REACH Affected.

Frequently Asked Questions (FAQ)

Q: Can I directly replace the FDMS7672 with any of the listed substitute parts?

A: Direct replacement depends on package format compatibility. The FDMS7672 uses an 8-PQFN (5x6) package. Substitutes using the same or mechanically compatible packages (8-VSONP, 8-PQFN) can be directly replaced if PCB footprints are identical. Substitutes using different packages (8-TDSON, 8-HSOP, PowerFlat™) require PCB layout verification and may not be pin-compatible. Consult the specific package datasheets and PCB footprint drawings before implementation.

Q: What is the minimum continuous drain current requirement for a valid substitute?

A: A valid substitute must provide at least 19A continuous drain current at 25°C ambient temperature (Ta). All listed active substitutes meet or exceed this requirement. The FDMS7672 specification of 19A at Ta is the baseline threshold for electrical compatibility.

Q: How does on-resistance affect substitute selection?

A: On-resistance (Rds On) directly impacts power dissipation and thermal performance. The FDMS7672 specifies 5mOhm at 19A and 10V gate voltage. Substitutes with lower on-resistance (such as BSC042N03MSGATMA1 at 4.2mOhm or CSD17577Q5A at 4.2mOhm) provide improved efficiency and reduced heat generation. Substitutes with higher on-resistance (such as BSC057N03LSGATMA1 at 5.7mOhm or STL65N3LLH5 at 5.8mOhm) may require additional thermal management. On-resistance values are typically specified at different test conditions across manufacturers; verify the test conditions in the respective datasheets.

Q: What is the significance of gate charge (Qg) in substitute selection?

A: Gate charge determines the energy required to switch the MOSFET on and off. The FDMS7672 specifies 44nC at 10V. Substitutes with lower gate charge (such as CSD17510Q5A at 8.3nC or CSD17310Q5A at 11.6nC) require less gate drive energy and enable higher switching frequencies with reduced switching losses. Substitutes with higher gate charge (such as BSC042N03MSGATMA1 at 55nC) may require more robust gate drive circuits. Gate charge specifications vary by manufacturer test conditions; verify the gate voltage at which Qg is specified.

Q: Are there packaging considerations when selecting a substitute?

A: Yes. The FDMS7672 uses an 8-PQFN (5x6) surface mount package. Substitutes are available in multiple package formats: 8-PQFN (5x6), 8-VSONP (5x6), PG-TDSON-8-5, 8-HSOP, and PowerFlat™ (5x6). While these are all 8-pin power packages with similar physical dimensions, the exact pin configurations and PCB footprints may differ. Verify that the substitute part's package footprint is compatible with your existing PCB design before implementation. Some packages may require different thermal vias or land patterns.

Q: Which substitute parts are recommended for new product designs?

A: For new designs, select from active status parts only: BSC042N03MSGATMA1, BSC050N03LSGATMA1, CSD17310Q5A, CSD17510Q5A, CSD17577Q5A, CSD17577Q5AT, or RS1E200GNTB. Among these, CSD17310Q5A and CSD17510Q5A offer the lowest gate charge and input capacitance, making them suitable for high-frequency switching applications. BSC050N03LSGATMA1 offers the best combination of performance and availability (1,000,400 units in stock). Obsolete parts (BSC057N03LSGATMA1 and STL65N3LLH5) should be used only for legacy system maintenance where supply chain continuity is critical.

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

A: Ta (ambient temperature) current rating is specified at 25°C ambient temperature and represents the continuous drain current under standard laboratory conditions. Tc (case temperature) current rating is specified at the device case temperature and represents the continuous drain current under actual operating conditions with thermal management. The FDMS7672 provides 19A at Ta and 28A at Tc. Higher Tc ratings indicate better thermal performance. When selecting a substitute, ensure that the Ta rating meets or exceeds 19A; the Tc rating indicates additional thermal headroom for high-power applications.

Q: Can I use a substitute with higher drain current rating in a lower-current application?

A: Yes. A substitute with a higher drain current rating (such as CSD17577Q5A at 60A Ta) can be used in applications designed for the FDMS7672 (19A Ta). The higher current rating provides additional design margin and thermal headroom. However, verify that the on-resistance, gate charge, and input capacitance are compatible with your gate drive circuit and switching frequency requirements. Higher current-rated devices may have different parasitic characteristics that affect circuit performance.

Q: What compliance certifications are critical for substitute selection?

A: All listed substitutes are RoHS3 compliant and have Moisture Sensitivity Level 1 (Unlimited), matching the FDMS7672 specifications. REACH compliance status varies: most substitutes are REACH Unaffected, but CSD17510Q5A and CSD17577Q5AT are listed as REACH Affected. If your application or market requires REACH compliance, select from parts with REACH Unaffected status. Verify the specific regulatory requirements for your target market before finalizing substitute selection.

Q: How do I verify package compatibility before implementing a substitute?

A: Obtain the package datasheets for both the FDMS7672 and the proposed substitute. Compare the pin configurations, lead spacing, and PCB footprint dimensions. The FDMS7672 uses an 8-PQFN (5x6) package with specific pin assignments. Substitutes using the same package format (8-PQFN 5x6) are directly compatible. Substitutes using different package formats (8-VSONP, 8-TDSON, 8-HSOP, PowerFlat™) require detailed footprint comparison and may require PCB redesign. Use the manufacturer's recommended PCB footprint drawings and thermal via patterns for accurate implementation.

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