STS5PF30L Equivalent & Substitute Parts

Part Overview

The STS5PF30L is a P-Channel MOSFET manufactured by STMicroelectronics, rated for 30V drain-to-source voltage and 5A continuous drain current in an 8-SOIC surface mount package. This device is part of the STripFET™ series and is classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary to maintain design continuity and ensure long-term component availability for new production and field replacements.

Key Parameters

Parameter	Value	Unit
FET Type	P-Channel	—
Drain to Source Voltage (Vdss)	30	V
Current - Continuous Drain (Id) @ 25°C	5	A
Rds On (Max) @ Id, Vgs	55 mOhm @ 2.5A, 10V	—
Vgs(th) (Max) @ Id	2.5	V @ 250µA
Gate Charge (Qg) (Max) @ Vgs	16	nC @ 5V
Vgs (Max)	±16	V
Input Capacitance (Ciss) (Max) @ Vds	1350	pF @ 25V
Power Dissipation (Max)	2.5	W
Operating Temperature	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the STS5PF30L is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

FET Type: P-Channel (required)
Drain to Source Voltage (Vdss): 30V minimum (substitutes at 30V or higher are acceptable)
Current - Continuous Drain (Id): 5A minimum at 25°C (substitutes at 5A or higher are acceptable)
Mounting Type: Surface Mount (required)
Package / Case: 8-SOIC or equivalent 8-pin surface mount package (required)
Operating Temperature Range: -55°C to 150°C minimum (substitutes with equal or extended range are acceptable)
RoHS Status: ROHS3 Compliant (required)
Moisture Sensitivity Level: MSL 1 or MSL 3 (acceptable)

Secondary Parameters for Optimization:

Rds On (Max): Lower values indicate improved performance
Gate Charge (Qg): Lower values reduce switching losses
Input Capacitance (Ciss): Lower values improve switching speed
Power Dissipation (Max): Higher values provide thermal margin
Vgs (Max): Higher values provide gate voltage margin

All substitute parts listed meet or exceed the critical matching parameters. Differences in secondary parameters reflect design variations across manufacturers and may be selected based on specific application requirements.

Parameter Comparison

Parameter	STS5PF30L	AO4405	DMP3056LSS-13	FDS9435A	IRF7205TRPBF	IRF9335TRPBF	TSM9435CS RLG	ZXMP3A16N8TA
Manufacturer	STMicroelectronics	UMW	Diodes Incorporated	onsemi	Infineon Technologies	Infineon Technologies	Taiwan Semiconductor Corporation	Diodes Incorporated
FET Type	P-Channel	P-Channel	P-Channel	P-Channel	P-Channel	P-Channel	P-Channel	P-Channel
Vdss (V)	30	30	30	30	30	30	30	30
Id @ 25°C (A)	5	6	7.1	5.3	4.6	5.4	5.3	5.6
Rds On (Max) @ 10V (mOhm)	55 @ 2.5A	45 @ 6A	45 @ 6A	50 @ 5.3A	70 @ 4.6A	59 @ 5.4A	60 @ 5.3A	40 @ 4.2A
Vgs(th) (Max) @ 250µA (V)	2.5	2.5	2.1	3	3	2.4	3	1
Gate Charge (Qg) (Max) (nC)	16 @ 5V	11 @ 10V	6.8 @ 4.5V	14 @ 10V	40 @ 10V	14 @ 10V	27 @ 10V	29.6 @ 10V
Vgs (Max) (V)	±16	±20	±20	±25	±20	±20	±20	±20
Ciss (Max) (pF)	1350 @ 25V	520 @ 15V	722 @ 25V	528 @ 15V	870 @ 10V	386 @ 25V	551.57 @ 15V	1022 @ 15V
Power Dissipation (Max) (W)	2.5	3.1	2.5	2.5	2.5	2.5	5.3	1.9
Operating Temperature (°C)	-55 to 150	-55 to 150	-55 to 150	-55 to 175	-55 to 150	-55 to 150	-55 to 150	-55 to 150
Package / Case	8-SOIC	8-SOP	8-SOP	8-SOIC	8-SO	8-SO	8-SOP	8-SO
Product Status	Obsolete	Active	Active	Active	Active	Active	Obsolete	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)	1 (Unlimited)

Engineering Selection Recommendations

Preferred Substitutes (Active Product Status):

The following parts are recommended as primary substitutes due to active product status and full compliance with critical parameters:

AO4405 (UMW): Meets all critical parameters with 6A continuous drain current and improved Rds On performance. Active product status ensures long-term availability.
DMP3056LSS-13 (Diodes Incorporated): Exceeds current rating at 7.1A with lowest gate charge (6.8 nC) among all substitutes. Active product status provides supply continuity.
FDS9435A (onsemi): Meets all critical parameters with 5.3A continuous drain current and extended operating temperature to 175°C. Active product status and PowerTrench® technology provide design flexibility.
IRF9335TRPBF (Infineon Technologies): Meets all critical parameters with 5.4A continuous drain current and lowest input capacitance (386 pF). Active product status and HEXFET® technology ensure reliability.
ZXMP3A16N8TA (Diodes Incorporated): Exceeds current rating at 5.6A with lowest Rds On (40 mOhm @ 4.2A, 10V) and lowest Vgs(th) (1V). Active product status provides supply assurance.

Secondary Substitutes (Obsolete Product Status):

TSM9435CS RLG (Taiwan Semiconductor Corporation): Meets all critical parameters but carries obsolete product status. This part should be used only when active alternatives are unavailable. MSL rating of 3 requires moisture control during storage and handling.

Substitutes Not Recommended:

IRF7240TRPBF (Infineon Technologies): Exceeds critical voltage specification at 40V Vdss, which is outside the 30V requirement. This part is not a direct substitute.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with higher Vdss rating than the STS5PF30L?

A: Yes. A substitute with higher Vdss rating (such as IRF7240TRPBF at 40V) is electrically compatible in circuits designed for 30V operation. However, higher voltage devices typically exhibit different on-resistance and capacitance characteristics. Verify that secondary parameters do not negatively impact circuit performance before implementation.

Q: What is the difference between 8-SOIC, 8-SOP, and 8-SO packages?

A: These are all 8-pin surface mount packages with 0.154" (3.90mm) width. 8-SOIC, 8-SOP, and 8-SO designations refer to the same physical footprint and are mechanically interchangeable. Pin configurations and lead spacing are identical across these designations.

Q: Why do some substitutes have lower Rds On values than the STS5PF30L?

A: Rds On varies based on the measurement conditions (current and gate voltage) specified by each manufacturer. Lower Rds On values indicate reduced on-state resistance, which results in lower power dissipation and improved efficiency. Substitutes with lower Rds On are generally preferred for applications sensitive to power loss.

Q: Is the STS5PF30L still available for purchase?

A: The STS5PF30L is classified as obsolete. Existing inventory may be available through authorized distributors, but long-term supply is not guaranteed. Active substitutes listed in this document are recommended for new designs and ongoing production.

Q: What does MSL 1 (Unlimited) mean compared to MSL 3 (168 Hours)?

A: MSL (Moisture Sensitivity Level) indicates the maximum time a component can be exposed to ambient conditions (30°C, 85% relative humidity) before soldering. MSL 1 (Unlimited) allows indefinite storage without moisture control. MSL 3 (168 Hours) requires that components be soldered within 168 hours of exposure to ambient conditions or be re-baked. For production environments with controlled storage, both levels are acceptable.

Q: Can I substitute IRF7205TRPBF for the STS5PF30L?

A: IRF7205TRPBF meets all critical parameters and is electrically compatible. However, it exhibits higher gate charge (40 nC vs. 16 nC) and higher input capacitance (870 pF vs. 1350 pF), which may increase switching losses in high-frequency applications. Verify circuit performance before implementation.

Q: Which substitute offers the best thermal performance?

A: TSM9435CS RLG provides the highest power dissipation rating at 5.3W (Tc), compared to 2.5W for most other substitutes. However, TSM9435CS RLG carries obsolete product status. Among active substitutes, AO4405 offers the highest power dissipation at 3.1W (Ta).

Q: Are all substitutes RoHS3 compliant?

A: Yes. All substitute parts listed in this document are ROHS3 compliant, matching the compliance status of the STS5PF30L. All parts are also REACH unaffected and classified as EAR99 for export control purposes.

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