FDMS8026S N-Channel 30V 19A/22A MOSFET Equivalent & Substitute Parts

Part Overview

The FDMS8026S is an N-Channel MOSFET manufactured by onsemi, rated for 30V drain-to-source voltage with continuous drain current of 19A at Ta and 22A at Tc. This device is housed in an 8-PQFN (5x6) package and belongs to the PowerTrench® and SyncFET™ product series. The FDMS8026S is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts offer comparable performance within acceptable parameter tolerances for the intended application.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	30	V
Continuous Drain Current @ 25°C (Ta)	19	A
Continuous Drain Current @ 25°C (Tc)	22	A
Rds(on) Max @ 19A, 10V	4.3	mOhm
Gate Threshold Voltage (Vgs(th)) @ 1mA	3	V
Gate Charge (Qg) @ 10V	37	nC
Input Capacitance (Ciss) @ 15V	2280	pF
Power Dissipation Max (Ta)	2.5	W
Power Dissipation Max (Tc)	41	W
Operating Temperature Range	-55 to 150	°C
Package Type	8-PQFN (5x6)	-
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution of the FDMS8026S is determined by the following critical parameters: drain-to-source voltage rating (Vdss = 30V), continuous drain current capability (minimum 19A at Ta), on-resistance (Rds(on) ≤ 4.3mOhm at specified conditions), gate threshold voltage compatibility, and surface mount package compatibility. The substitute parts are grouped into two categories:

Parametric Equivalent (Direct Replacement): FDMS0310AS maintains identical electrical specifications and package footprint, differing only in product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. Cut Tape).

Direct Manufacturer Substitutes: BSC042N03LSGATMA1 (Infineon) provides equivalent Vdss and comparable continuous drain current with slightly improved Rds(on) performance and higher thermal capability.

Similar Performance Alternatives: CSD17310Q5A, CSD17506Q5A, CSD17510Q5A, CSD17577Q5A, CSD17577Q5AT (Texas Instruments NexFET™ series), RS1E180BNTB, RS1E200BNTB, and RS1E200GNTB (Rohm Semiconductor) meet the 30V Vdss requirement and deliver continuous drain current at or above 19A, with variations in Rds(on), gate charge, and package type. These alternatives are suitable where package footprint differences are acceptable and thermal or switching performance improvements are beneficial.

Parameter Comparison

Parameter	FDMS8026S	FDMS0310AS	BSC042N03LSGATMA1	CSD17310Q5A	CSD17510Q5A	CSD17577Q5A	RS1E200GNTB	RS1E180BNTB
Manufacturer	onsemi	onsemi	Infineon	Texas Instruments	Texas Instruments	Texas Instruments	Rohm	Rohm
Vdss (V)	30	30	30	30	30	30	30	30
Id @ Ta (A)	19	19	20	21	20	60	20	60
Id @ Tc (A)	22	22	93	100	100	60	57	60
Rds(on) Max (mOhm)	4.3 @ 19A, 10V	4.3 @ 19A, 10V	4.2 @ 30A, 10V	5.1 @ 20A, 8V	5.2 @ 20A, 10V	4.2 @ 18A, 10V	4.6 @ 20A, 10V	4.9 @ 18A, 10V
Vgs(th) Max (V)	3 @ 1mA	3 @ 1mA	2.2 @ 250µA	1.8 @ 250µA	2.1 @ 250µA	1.8 @ 250µA	2.5 @ 1mA	2.5 @ 1mA
Qg @ 10V (nC)	37	37	42	11.6 @ 4.5V	8.3 @ 4.5V	35	16.8	46
Ciss @ 15V (pF)	2280	2280	3500	1560	1250	2310	1080	2400
Power Dissipation Ta (W)	2.5	2.5	2.5	3.1	3	3	3	3
Power Dissipation Tc (W)	41	41	57	—	—	53	25	25
Package	8-PQFN (5x6)	8-PQFN (5x6)	PG-TDSON-8-5	8-VSONP (5x6)	8-VSONP (5x6)	8-VSONP (5x6)	8-HSOP	CPT3
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	REACH Affected	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): FDMS0310AS is the primary equivalent for FDMS8026S. Both devices are manufactured by onsemi, share identical electrical parameters, and are housed in the same 8-PQFN (5x6) package. FDMS0310AS holds Active product status and is available in Tape & Reel packaging, making it suitable for production environments. Both components are ROHS3 Compliant with MSL 1 rating.

For Equivalent Performance with Enhanced Thermal Capability: BSC042N03LSGATMA1 (Infineon OptiMOS™) delivers 30V Vdss with 20A continuous drain current at Ta and 93A at Tc. The device exhibits superior thermal performance (57W at Tc vs. 41W for FDMS8026S) and marginally lower Rds(on) (4.2mOhm vs. 4.3mOhm). Package footprint differs (PG-TDSON-8-5 vs. 8-PQFN), requiring PCB layout verification. Active product status and ROHS3 compliance are confirmed.

For Switching Performance Optimization: CSD17510Q5A (Texas Instruments NexFET™) provides 30V Vdss with 20A continuous drain current at Ta and 100A at Tc. This device features significantly reduced gate charge (8.3nC vs. 37nC) and lower input capacitance (1250pF vs. 2280pF), enabling faster switching transitions. Package is 8-VSONP (5x6), compatible with PQFN footprints. Note: REACH Status is listed as Affected; verify compliance requirements for target applications.

For High Current Capability: CSD17577Q5A and CSD17577Q5AT (Texas Instruments NexFET™) support 60A continuous drain current at Ta with 30V Vdss. These devices maintain comparable Rds(on) (4.2mOhm) and gate charge (35nC) to FDMS8026S while delivering substantially higher current capacity. Suitable for applications requiring increased current headroom. CSD17577Q5AT is available in Cut Tape packaging; CSD17577Q5A in Tape & Reel format.

For Alternative Package Formats: RS1E200GNTB and RS1E200BNTB (Rohm Semiconductor) deliver 20A continuous drain current at Ta with 30V Vdss in 8-HSOP package. RS1E200GNTB exhibits lower input capacitance (1080pF) and reduced gate charge (16.8nC), beneficial for high-frequency switching applications. RS1E180BNTB supports 60A continuous drain current at Tc in CPT3 package. Both are ROHS3 Compliant and Active status.

All recommended substitutes maintain -55°C to 150°C operating temperature range and MSL 1 moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can FDMS0310AS be used as a direct replacement for FDMS8026S? A: Yes. FDMS0310AS is a parametric equivalent manufactured by onsemi with identical electrical specifications (30V Vdss, 19A/22A continuous drain current, 4.3mOhm Rds(on), 37nC gate charge) and the same 8-PQFN (5x6) package footprint. The primary difference is product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. Cut Tape). No circuit modifications are required.

Q: What are the key differences between FDMS8026S and BSC042N03LSGATMA1? A: Both devices are rated for 30V Vdss and deliver comparable continuous drain current (19A vs. 20A at Ta). BSC042N03LSGATMA1 offers superior thermal performance (57W at Tc vs. 41W) and marginally lower Rds(on) (4.2mOhm vs. 4.3mOhm). The package differs (PG-TDSON-8-5 vs. 8-PQFN), requiring PCB layout verification. Gate threshold voltage is lower (2.2V vs. 3V), which may affect gate drive circuit design.

Q: Why would CSD17510Q5A be selected over FDMS8026S? A: CSD17510Q5A is selected when switching speed optimization is required. The device exhibits significantly reduced gate charge (8.3nC vs. 37nC) and lower input capacitance (1250pF vs. 2280pF), enabling faster switching transitions and reduced gate drive power dissipation. Continuous drain current (20A at Ta) meets or exceeds FDMS8026S requirements. Package is 8-VSONP (5x6), compatible with PQFN footprints. Note REACH Status compliance for target applications.

Q: Are package differences between substitute parts critical? A: Package differences require PCB layout verification. FDMS8026S uses 8-PQFN (5x6). FDMS0310AS shares this package. BSC042N03LSGATMA1 uses PG-TDSON-8-5; CSD17310Q5A, CSD17510Q5A, and CSD17577Q5A use 8-VSONP (5x6); RS1E200GNTB and RS1E200BNTB use 8-HSOP; RS1E180BNTB uses CPT3. While some packages share similar footprints, pin assignments and thermal pad configurations may differ. Consult device datasheets and PCB design guidelines before layout implementation.

Q: What is the significance of REACH Status in component selection? A: REACH Status indicates regulatory compliance for substances of concern. FDMS8026S and most substitutes are ROHS3 Compliant and REACH Unaffected. CSD17510Q5A and CSD17577Q5AT are listed as REACH Affected. For applications subject to REACH regulations, verify that REACH Affected components meet specific substance restrictions and documentation requirements in target markets.

Q: Can higher current-rated devices like CSD17577Q5A be used in place of FDMS8026S? A: Yes, with design considerations. CSD17577Q5A supports 60A continuous drain current at Ta, providing substantial current margin above FDMS8026S (19A). The 30V Vdss rating, Rds(on) (4.2mOhm), and gate charge (35nC) are comparable. Higher current capability does not degrade performance in lower-current applications. Verify package compatibility and thermal management requirements for the target PCB layout.

Q: What role does gate charge (Qg) play in substitute selection? A: Gate charge determines the energy required to switch the MOSFET on and off, directly affecting gate drive circuit design and switching losses. FDMS8026S has 37nC gate charge. CSD17510Q5A (8.3nC) and RS1E200GNTB (16.8nC) feature significantly lower gate charge, enabling faster switching and reduced power dissipation in high-frequency applications. Higher gate charge devices (RS1E180BNTB at 46nC) may require more robust gate drive circuits but are suitable for lower-frequency applications.

Q: Are all substitute parts available in the same packaging formats? A: No. FDMS8026S is available in Cut Tape (CT) & Digi-Reel®. FDMS0310AS is available in Tape & Reel (TR). Other substitutes vary: BSC042N03LSGATMA1 in Cut Tape; CSD17310Q5A, CSD17510Q5A, CSD17577Q5A in Tape & Reel; CSD17577Q5AT in Cut Tape; RS1E200GNTB, RS1E200BNTB, RS1E180BNTB in Cut Tape. Verify packaging availability with suppliers for production volume requirements.

Q: What compliance certifications apply to all recommended substitutes? A: All recommended substitutes are ROHS3 Compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching FDMS8026S specifications. Operating temperature range is -55°C to 150°C across all devices. REACH Status varies: most are REACH Unaffected; CSD17510Q5A and CSD17577Q5AT are REACH Affected. Verify REACH compliance requirements for target applications and geographic markets.

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