RSR025P03TL P-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The RSR025P03TL is a P-Channel MOSFET manufactured by Rohm Semiconductor, rated for 30V drain-to-source voltage with 2.5A continuous drain current at 25°C. The device is packaged in TSMT3 surface mount configuration with 1W power dissipation capability and operates at a maximum junction temperature of 150°C. This part carries a "Not For New Designs" product status, indicating that alternative components should be evaluated for new applications. Identifying equivalent and substitute parts is necessary to ensure design continuity, improve component availability, and support long-term production requirements.

Key Parameters

Parameter	Value	Unit
FET Type	P-Channel	—
Drain-to-Source Voltage (Vdss)	30	V
Continuous Drain Current (Id) @ 25°C	2.5	A
On-Resistance (Rds On) @ 2.5A, 10V	98	mOhm
Gate Charge (Qg) @ 5V	5.4	nC
Input Capacitance (Ciss) @ 10V	460	pF
Power Dissipation (Max)	1	W
Operating Temperature (TJ)	150	°C
Package Type	TSMT3 / SC-96	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the RSR025P03TL is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

FET Type: P-Channel topology
Drain-to-Source Voltage (Vdss): Minimum 30V rating
Continuous Drain Current (Id): Minimum 2.5A at 25°C
On-Resistance (Rds On): Comparable performance at rated current and gate voltage
Power Dissipation: Sufficient thermal capability for application requirements
Operating Temperature: Support for 150°C junction temperature operation
Package Compatibility: Surface mount configuration with compatible pinout

Secondary Considerations:

Gate Charge (Qg) and Input Capacitance (Ciss) affect switching performance
Gate Threshold Voltage (Vgs(th)) and Maximum Gate Voltage (Vgs Max) determine drive circuit compatibility
Product Status and compliance certifications (RoHS3, REACH) ensure regulatory alignment

Substitute parts are grouped into two categories: Direct Electrical Equivalents (matching or exceeding all primary parameters with compatible packaging) and Functional Alternatives (meeting electrical requirements with different package types or enhanced performance characteristics).

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On @ 10V (mOhm)	Qg @ Vgs (nC)	Ciss @ Vds (pF)	Power Diss. (W)	Package	Product Status
RSR025P03TL	Rohm Semiconductor	30	2.5	98 @ 2.5A	5.4 @ 5V	460 @ 10V	1.0	TSMT3 / SC-96	Not For New Designs
AO3401A	UMW	30	4.2	50 @ 4.2A	9.4 @ 4.5V	954 @ 15V	1.4	SOT-23 / TO-236-3	Active
AO3403	Alpha & Omega Semiconductor	30	2.6	115 @ 2.6A	7.2 @ 10V	315 @ 15V	1.4	SOT-23-3	Not For New Designs
AO3409	Alpha & Omega Semiconductor	30	2.6	130 @ 2.6A	9 @ 10V	370 @ 15V	1.4	SOT-23-3	Not For New Designs
AO3419	Alpha & Omega Semiconductor	20	3.5	85 @ 3.5A	4.4 @ 4.5V	400 @ 10V	1.4	SOT-23-3	Active
AO3421E	Alpha & Omega Semiconductor	30	3.0	95 @ 3A	8 @ 10V	215 @ 15V	1.4	SOT-23-3	Not For New Designs
DMG2307L-7	Diodes Incorporated	30	2.5	90 @ 2.5A	8.2 @ 10V	371.3 @ 15V	0.76	SOT-23-3	Not For New Designs
DMP2215L-7	Diodes Incorporated	20	2.7	100 @ 2.7A	5.3 @ 4.5V	250 @ 10V	1.08	SOT-23-3	Active
DMP3098L-7	Diodes Incorporated	30	3.8	70 @ 3.8A	—	336 @ 25V	1.08	SOT-23-3	Active
DMP3130L-7	Diodes Incorporated	30	3.5	77 @ 4.2A	12 @ 10V	432 @ 15V	0.70	SOT-23-3	Not For New Designs
FDN360P	onsemi	30	2.0	80 @ 2A	9 @ 10V	298 @ 15V	0.50	SOT-23-3	Active

Engineering Selection Recommendations

Direct Electrical Equivalents (Recommended for Replacement):

The DMG2307L-7 (Diodes Incorporated) provides the closest electrical match to the RSR025P03TL. Both devices share identical 30V Vdss rating and 2.5A continuous drain current specification. The DMG2307L-7 exhibits superior on-resistance performance (90 mOhm versus 98 mOhm at rated current), resulting in lower power dissipation and improved thermal efficiency. Although packaged in SOT-23-3 rather than TSMT3, the DMG2307L-7 maintains full RoHS3 compliance and operates across the same temperature range. This part is suitable for direct substitution in applications where package footprint can be accommodated.

Enhanced Performance Alternatives (For New Designs):

The AO3401A (UMW, Active status) exceeds the RSR025P03TL specifications with 4.2A continuous drain current and significantly lower on-resistance (50 mOhm at 4.2A, 10V). This device provides superior current handling and thermal performance while maintaining 30V Vdss rating and RoHS3 compliance. The AO3401A is recommended for new designs requiring improved efficiency and thermal margin.

The DMP3098L-7 (Diodes Incorporated, Active status) offers 3.8A continuous drain current with 70 mOhm on-resistance at 10V, providing enhanced current capacity and reduced conduction losses. This part maintains 30V Vdss rating, RoHS3 compliance, and active product status, making it suitable for new applications.

Voltage-Reduced Alternative:

The AO3419 (Alpha & Omega Semiconductor, Active status) operates at 20V Vdss with 3.5A continuous drain current and 85 mOhm on-resistance. This device is applicable only to applications where the 20V voltage rating is sufficient, offering improved current handling and active product status.

Compliance and Regulatory Alignment:

All recommended substitute parts maintain RoHS3 compliance and REACH unaffected status, ensuring regulatory continuity. Parts with "Active" product status (AO3401A, AO3419, DMP3098L-7, FDN360P) are preferred for new designs to ensure long-term availability and manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can the AO3401A directly replace the RSR025P03TL in existing designs?

A: The AO3401A provides superior electrical performance (4.2A versus 2.5A, 50 mOhm versus 98 mOhm) and maintains 30V Vdss rating. However, the package differs (SOT-23 versus TSMT3). Direct PCB substitution requires footprint verification. Electrical compatibility is confirmed for all gate drive and thermal requirements.

Q: What is the primary reason to substitute the RSR025P03TL?

A: The RSR025P03TL carries "Not For New Designs" status, indicating Rohm Semiconductor recommends against its use in new applications. Substitution ensures access to actively supported components with guaranteed long-term availability and manufacturer technical support.

Q: Does the DMG2307L-7 require different gate drive circuitry?

A: No. The DMG2307L-7 maintains compatible gate threshold voltage and maximum gate voltage specifications with the RSR025P03TL. Existing gate drive circuits require no modification. The lower on-resistance results in reduced power dissipation, improving thermal performance.

Q: Are there package compatibility considerations for SOT-23-3 substitutes?

A: Yes. The RSR025P03TL uses TSMT3 (SC-96) packaging, while most substitutes employ SOT-23-3 (TO-236-3, SC-59) packaging. These packages have different footprints and pin spacing. PCB layout modification is required. Pin configuration (Gate, Drain, Source) remains consistent across all P-Channel MOSFETs listed.

Q: Which substitute offers the best thermal performance?

A: The FDN360P (onsemi) provides the lowest power dissipation at 500 mW, followed by DMP3130L-7 at 700 mW. However, the FDN360P is rated for only 2A continuous drain current, limiting its applicability. For applications requiring 2.5A or higher current with superior thermal performance, the DMP3098L-7 (1.08W, 3.8A) or AO3401A (1.4W, 4.2A) are recommended.

Q: Can the AO3419 (20V) be used in a 30V application?

A: No. The AO3419 is rated for maximum 20V drain-to-source voltage. Using it in a 30V application exceeds the device rating and results in failure. The AO3419 is applicable only to applications where the supply voltage does not exceed 20V.

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

A: Gate charge affects switching speed and gate drive power requirements. The RSR025P03TL specifies 5.4 nC at 5V. Substitutes with higher gate charge (e.g., DMP3130L-7 at 12 nC) require longer switching times and higher gate drive current. For high-frequency switching applications, lower gate charge devices (AO3419 at 4.4 nC) improve efficiency.

Q: Are all listed substitutes RoHS3 compliant?

A: Yes. All substitute parts listed carry RoHS3 compliance certification and REACH unaffected status, ensuring regulatory alignment with the original RSR025P03TL.

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