IRF5803 P-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The IRF5803 is a P-Channel MOSFET manufactured by Infineon Technologies, designed for surface mount applications in the HEXFET® series. This device features a 40V drain-to-source voltage rating with 3.4A continuous drain current capability and 2W power dissipation, packaged in the Micro6™ (TSOP-6) form factor.

The IRF5803 carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications utilizing this component.

Key Parameters

Parameter	Value	Unit
FET Type	P-Channel	—
Drain to Source Voltage (Vdss)	40	V
Current - Continuous Drain (Id) @ 25°C	3.4	A
Rds On (Max) @ Id, Vgs	112	mOhm @ 3.4A, 10V
Vgs(th) (Max) @ Id	3	V @ 250µA
Gate Charge (Qg) (Max) @ Vgs	37	nC @ 10V
Vgs (Max)	±20	V
Input Capacitance (Ciss) (Max) @ Vds	1110	pF @ 25V
Power Dissipation (Max)	2	W
Package / Case	SOT-23-6 Thin, TSOT-23-6	—
Mounting Type	Surface Mount	—
Technology	MOSFET (Metal Oxide)	—

Substitute Part Grouping Explanation

Substitution of the IRF5803 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

FET Type: P-Channel configuration
Drain to Source Voltage (Vdss): 40V minimum rating
Continuous Drain Current (Id): 3.4A minimum at 25°C
On-State Resistance (Rds On): 112 mOhm maximum @ 3.4A, 10V
Gate Threshold Voltage (Vgs(th)): 3V maximum @ 250µA
Gate Charge (Qg): 37 nC maximum @ 10V
Maximum Gate Voltage (Vgs): ±20V
Input Capacitance (Ciss): 1110 pF maximum @ 25V
Power Dissipation: 2W maximum

Mechanical Equivalence Criteria:

Package Type: SOT-23-6 Thin (TSOT-23-6)
Mounting: Surface Mount
Series: HEXFET®

Substitute parts must match all electrical parameters and mechanical specifications without deviation. Parts meeting these criteria are electrically and mechanically interchangeable with the IRF5803.

Parameter Comparison

Parameter	IRF5803	IRF5803TRPBF	Unit
Manufacturer	Infineon Technologies	Infineon Technologies	—
FET Type	P-Channel	P-Channel	—
Drain to Source Voltage (Vdss)	40	40	V
Current - Continuous Drain (Id) @ 25°C	3.4	3.4	A
Rds On (Max) @ Id, Vgs	112	112	mOhm @ 3.4A, 10V
Vgs(th) (Max) @ Id	3	3	V @ 250µA
Gate Charge (Qg) (Max) @ Vgs	37	37	nC @ 10V
Vgs (Max)	±20	±20	V
Input Capacitance (Ciss) (Max) @ Vds	1110	1110	pF @ 25V
Power Dissipation (Max)	2	2	W
Package / Case	SOT-23-6 Thin, TSOT-23-6	SOT-23-6 Thin, TSOT-23-6	—
Mounting Type	Surface Mount	Surface Mount	—
Operating Temperature	Not specified	-55°C ~ 150°C (TJ)	—
Product Status	Obsolete	Active	—
RoHS Status	RoHS non-compliant	ROHS3 Compliant	—

Engineering Selection Recommendations

IRF5803TRPBF as Primary Substitute:

The IRF5803TRPBF is the manufacturer-recommended substitute for the obsolete IRF5803. This part maintains complete electrical and mechanical equivalence across all specified parameters. The IRF5803TRPBF is classified as an active product with current manufacturing support and availability.

Compliance Considerations:

The IRF5803TRPBF carries ROHS3 compliance certification, whereas the original IRF5803 is RoHS non-compliant. For applications subject to RoHS regulatory requirements, the IRF5803TRPBF satisfies compliance obligations while maintaining functional equivalence.

Both parts share identical REACH status (REACH Unaffected) and ECCN classification (EAR99), ensuring regulatory consistency in supply chain management.

Availability and Supply Chain:

The IRF5803TRPBF is available in higher inventory quantities (35,100 pieces) compared to the original IRF5803 (737 pieces), supporting sustained production requirements. The IRF5803TRPBF is supplied in Cut Tape (CT) and Digi-Reel® packaging formats, accommodating both manual and automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the IRF5803TRPBF be used as a direct replacement for the IRF5803?

A: Yes. The IRF5803TRPBF is electrically and mechanically equivalent to the IRF5803 across all specified parameters, including Vdss, Id, Rds On, gate charge, and package configuration. Direct substitution is supported without circuit modification.

Q: What is the primary difference between the IRF5803 and IRF5803TRPBF?

A: The IRF5803TRPBF is the active production variant with ROHS3 compliance certification. The original IRF5803 is classified as obsolete. Both parts are electrically identical and share the same base product number designation.

Q: Are there any package or pinout differences between these parts?

A: No. Both the IRF5803 and IRF5803TRPBF use the SOT-23-6 Thin (TSOT-23-6) package with identical pinout and mechanical dimensions. Surface mount assembly processes require no modification.

Q: What packaging options are available for the IRF5803TRPBF?

A: The IRF5803TRPBF is supplied in Cut Tape (CT) and Digi-Reel® formats, supporting both manual component handling and automated pick-and-place assembly equipment.

Q: Does the IRF5803TRPBF meet RoHS requirements?

A: Yes. The IRF5803TRPBF carries ROHS3 compliance certification. Applications requiring RoHS compliance should specify the IRF5803TRPBF to satisfy regulatory obligations.

Q: Are the electrical characteristics identical between the two parts?

A: Yes. All electrical parameters are identical: 40V Vdss, 3.4A continuous drain current, 112 mOhm Rds On, 37 nC gate charge, and 2W power dissipation. No performance differences exist in circuit operation.

Q: What is the base product number for these parts?

A: The base product number is IRF5803. The IRF5803TRPBF is the active production variant of this base product.

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