IRLMS1503TR N-Channel MOSFET 30V 3.2A Equivalent & Substitute Parts

Part Overview

The IRLMS1503TR is an N-Channel MOSFET manufactured by Infineon Technologies, designed for surface mount applications in the Micro6™ (TSOP-6) package. This device operates at 30V drain-to-source voltage with a continuous drain current rating of 3.2A at 25°C. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value	Unit
FET Type	N-Channel	—
Technology	MOSFET (Metal Oxide)	—
Drain to Source Voltage (Vdss)	30	V
Continuous Drain Current (Id) @ 25°C	3.2	A
Rds On (Max) @ 2.2A, 10V	100	mOhm
Vgs(th) (Max) @ 250µA	1	V
Gate Charge (Qg) (Max) @ 10V	9.6	nC
Input Capacitance (Ciss) (Max) @ 25V	210	pF
Package Type	SOT-23-6 (Micro6™ TSOP-6)	—
Mounting Type	Surface Mount	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the IRLMS1503TR is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

FET Type: N-Channel
Technology: MOSFET (Metal Oxide)
Drain to Source Voltage (Vdss): 30V
Continuous Drain Current (Id) @ 25°C: 3.2A
On-State Resistance (Rds On): 100 mOhm @ 2.2A, 10V
Gate Threshold Voltage (Vgs(th)): 1V @ 250µA
Gate Charge (Qg): 9.6 nC @ 10V
Input Capacitance (Ciss): 210 pF @ 25V

Mechanical Equivalence Criteria:

Package: SOT-23-6 (Micro6™ TSOP-6)
Mounting: Surface Mount
Moisture Sensitivity Level: 1 (Unlimited)

The IRLMS1503TRPBF meets all electrical and mechanical equivalence requirements and is identified as a direct substitute.

Parameter Comparison

Parameter	IRLMS1503TR (Main Part)	IRLMS1503TRPBF (Substitute)	Match Status
Manufacturer	Infineon Technologies	Infineon Technologies	Identical
FET Type	N-Channel	N-Channel	Identical
Technology	MOSFET (Metal Oxide)	MOSFET (Metal Oxide)	Identical
Drain to Source Voltage (Vdss)	30V	30V	Identical
Continuous Drain Current (Id) @ 25°C	3.2A	3.2A	Identical
Rds On (Max) @ 2.2A, 10V	100 mOhm	100 mOhm	Identical
Vgs(th) (Max) @ 250µA	1V	1V	Identical
Gate Charge (Qg) (Max) @ 10V	9.6 nC	9.6 nC	Identical
Input Capacitance (Ciss) (Max) @ 25V	210 pF	210 pF	Identical
Package / Case	SOT-23-6	SOT-23-6	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Identical
Product Status	Obsolete	Active	Substitute is Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	Substitute offers improved compliance

Engineering Selection Recommendations

The IRLMS1503TRPBF is the direct functional equivalent of the IRLMS1503TR. Selection of the substitute part is based on the following engineering factors:

Product Status: The IRLMS1503TR is classified as obsolete. The IRLMS1503TRPBF maintains active product status with Infineon Technologies, ensuring continued availability and manufacturing support.

Regulatory Compliance: The IRLMS1503TRPBF is ROHS3 compliant, whereas the original part is RoHS non-compliant. This represents an improvement in environmental and regulatory alignment for new designs and production runs.

Electrical Performance: All critical electrical parameters are identical between the two parts, including Vdss, Id, Rds On, Vgs(th), Qg, and Ciss. No circuit redesign or performance adjustment is required.

Mechanical Compatibility: Both parts utilize the SOT-23-6 (Micro6™ TSOP-6) package with surface mount configuration. PCB layout and assembly processes remain unchanged.

Packaging Format: The IRLMS1503TRPBF is supplied in Tape & Reel (TR) format, which is standard for high-volume production environments.

Frequently Asked Questions (FAQ)

Q: Can the IRLMS1503TRPBF be used as a direct replacement for the IRLMS1503TR in existing designs?

A: Yes. The IRLMS1503TRPBF is electrically and mechanically identical to the IRLMS1503TR across all specified parameters. No circuit modifications, PCB layout changes, or assembly process adjustments are required. The parts are pin-compatible and functionally interchangeable.

Q: What is the difference between IRLMS1503TR and IRLMS1503TRPBF?

A: The primary differences are product status and regulatory compliance. The IRLMS1503TR is obsolete and RoHS non-compliant. The IRLMS1503TRPBF is an active product with ROHS3 compliance. Electrical and mechanical specifications are identical.

Q: Are there any thermal or performance differences between these parts?

A: No. Both parts share identical electrical characteristics including on-state resistance, gate charge, and input capacitance. The IRLMS1503TRPBF specifies a maximum power dissipation of 1.7W (Ta) and operating temperature range of -55°C to 150°C (TJ), which are standard performance metrics for this device class.

Q: Is the SOT-23-6 package the same as TSOP-6?

A: Yes. SOT-23-6 and Micro6™ TSOP-6 refer to the same physical package. Both designations describe a 6-pin surface mount package used for this MOSFET series.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: Both parts have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard handling and storage procedures apply without special desiccant or humidity control requirements.

Q: Can I use the IRLMS1503TRPBF in high-volume production?

A: Yes. The IRLMS1503TRPBF is supplied in Tape & Reel (TR) format, which is optimized for automated assembly and high-volume manufacturing environments. Current inventory availability is 28,160 pieces.

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