DMP3050LSS-13 Equivalent & Substitute Parts

Part Overview

The DMP3050LSS-13 is a P-Channel MOSFET manufactured by Diodes Incorporated, rated for 30V drain-to-source voltage with 4.8A continuous drain current at 25°C. The device is housed in an 8-SO surface mount package and is designed for general-purpose switching and amplification applications requiring P-channel enhancement-mode operation.

The DMP3050LSS-13 maintains Active product status with full production support. Identification of equivalent and substitute parts becomes necessary when addressing supply chain constraints, inventory availability, or application requirements that permit operation within expanded electrical or thermal parameters.

Key Parameters

Parameter	Value	Unit
FET Type	P-Channel	—
Drain-to-Source Voltage (Vdss)	30	V
Continuous Drain Current (Id) @ 25°C	4.8	A
On-Resistance (Rds On Max) @ 10V Vgs	45	mOhm
Gate Threshold Voltage (Vgs(th) Max) @ 250µA	2	V
Gate Charge (Qg Max) @ 10V	10.5	nC
Maximum Gate Voltage (Vgs Max)	±25	V
Input Capacitance (Ciss Max) @ 15V Vds	620	pF
Power Dissipation (Max)	1.7	W
Operating Temperature Range	-55 to 150	°C
Mounting Type	Surface Mount	—
Package	8-SOIC (0.154", 3.90mm Width)	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the DMP3050LSS-13 is determined by electrical and mechanical compatibility within the following criteria:

Electrical Compatibility Requirements:

FET Type: P-Channel enhancement-mode MOSFET
Drain-to-Source Voltage (Vdss): Minimum 30V (equal or greater)
Continuous Drain Current (Id): Minimum 4.8A at 25°C (equal or greater)
Gate Threshold Voltage (Vgs(th)): Within acceptable switching range
On-Resistance (Rds On): Lower or equal values preferred for thermal performance
Maximum Gate Voltage (Vgs Max): Minimum ±20V (equal or greater)
Operating Temperature Range: -55°C to 150°C (matching or exceeding)

Mechanical Compatibility Requirements:

Mounting Type: Surface Mount
Package: 8-SOIC form factor with 0.154" (3.90mm) width
Pin configuration: Compatible with 8-SO/8-SOIC pinout

Compliance Requirements:

RoHS3 Compliance
MSL Rating: 1 (Unlimited)
REACH Unaffected status

The AO4449 from Alpha & Omega Semiconductor Inc. satisfies all electrical and mechanical substitution criteria, with enhanced current rating (7A) and improved on-resistance characteristics (34mOhm @ 7A, 10V).

Parameter Comparison

Parameter	DMP3050LSS-13 (Main)	AO4449 (Substitute)	Unit
Manufacturer	Diodes Incorporated	Alpha & Omega Semiconductor Inc.	—
FET Type	P-Channel	P-Channel	—
Drain-to-Source Voltage (Vdss)	30	30	V
Continuous Drain Current (Id) @ 25°C	4.8	7	A
On-Resistance (Rds On Max) @ 10V Vgs	45	34	mOhm
Gate Threshold Voltage (Vgs(th) Max) @ 250µA	2	2.4	V
Gate Charge (Qg Max) @ 10V	10.5	16	nC
Maximum Gate Voltage (Vgs Max)	±25	±20	V
Input Capacitance (Ciss Max) @ 15V Vds	620	910	pF
Power Dissipation (Max)	1.7	3.1	W
Operating Temperature Range	-55 to 150	-55 to 150	°C
Package	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	—
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	—
Product Status	Active	Not For New Designs	—

Engineering Selection Recommendations

DMP3050LSS-13 (Primary Selection): The DMP3050LSS-13 is the recommended primary component for new designs. It maintains Active product status with ongoing manufacturing support from Diodes Incorporated. The device carries full RoHS3 compliance and MSL Level 1 rating, ensuring long-term availability and supply chain stability. Selection of this part is appropriate for applications requiring standard P-channel MOSFET functionality within the specified electrical parameters.

AO4449 (Substitute Selection): The AO4449 serves as a functional substitute when DMP3050LSS-13 availability is constrained. The substitute provides superior electrical performance characteristics, including higher continuous drain current (7A versus 4.8A) and lower on-resistance (34mOhm versus 45mOhm at 10V Vgs). Both devices share identical voltage ratings (30V Vdss), operating temperature range (-55°C to 150°C), and package form factor (8-SOIC).

The AO4449 carries "Not For New Designs" status, indicating that Alpha & Omega Semiconductor Inc. does not recommend this part for new product development. However, the device remains suitable for replacement, repair, and legacy system applications where supply of the primary part is unavailable. The AO4449 maintains full RoHS3 compliance and MSL Level 1 rating.

Substitution Constraints: The AO4449 exhibits a reduced maximum gate voltage specification (±20V versus ±25V on the DMP3050LSS-13). Applications requiring gate drive voltages exceeding ±20V must retain the DMP3050LSS-13. The AO4449 demonstrates increased input capacitance (910pF versus 620pF) and gate charge (16nC versus 10.5nC), which may affect switching speed in high-frequency applications. Circuit validation is required when substituting in timing-critical or high-frequency switching applications.

Frequently Asked Questions (FAQ)

Q: Can the AO4449 be used as a direct replacement for the DMP3050LSS-13 in all applications?

A: The AO4449 is electrically compatible for applications operating within its specified parameters. Both devices share the same 30V Vdss rating, 8-SOIC package form factor, and operating temperature range. However, the AO4449 maximum gate voltage is limited to ±20V compared to ±25V on the DMP3050LSS-13. Applications requiring gate drive voltages exceeding ±20V must use the DMP3050LSS-13. Additionally, the AO4449 exhibits higher input capacitance and gate charge, which may affect switching characteristics in high-frequency circuits.

Q: What are the key electrical differences between these two parts?

A: The AO4449 provides higher continuous drain current (7A versus 4.8A) and lower on-resistance (34mOhm versus 45mOhm at 10V Vgs), resulting in improved current handling and reduced power dissipation. The AO4449 gate threshold voltage is slightly higher (2.4V versus 2V). The AO4449 exhibits increased gate charge (16nC versus 10.5nC) and input capacitance (910pF versus 620pF), which may increase switching losses in high-frequency applications. The DMP3050LSS-13 supports higher maximum gate voltage (±25V versus ±20V).

Q: Are both parts available in the same package?

A: Yes. Both the DMP3050LSS-13 and AO4449 are housed in 8-SOIC packages with identical physical dimensions (0.154" width, 3.90mm). Pin configuration and PCB footprint compatibility are maintained between the two devices.

Q: What is the significance of the "Not For New Designs" status on the AO4449?

A: The "Not For New Designs" designation indicates that Alpha & Omega Semiconductor Inc. does not recommend the AO4449 for incorporation into new product designs. This status typically reflects end-of-life planning or transition to newer product lines. The AO4449 remains suitable for replacement, repair, and legacy system applications. New designs should prioritize the DMP3050LSS-13, which carries Active product status.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the DMP3050LSS-13 and AO4449 are RoHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity ratings, ensuring compatibility with standard PCB assembly processes and long-term storage without special handling requirements.

Q: Which part should be selected for new product development?

A: The DMP3050LSS-13 is the appropriate selection for new product development. It maintains Active product status with ongoing manufacturing support from Diodes Incorporated. The AO4449 is reserved for applications where DMP3050LSS-13 supply is unavailable or for replacement of existing systems already using the AO4449.

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