IRL3803SPBF N-Channel 30V 140A MOSFET Equivalent & Substitute Parts

Part Overview

The IRL3803SPBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 30V drain-to-source voltage and 140A continuous drain current in a surface mount D2PAK package. This device is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives. The part operates across a temperature range of -55°C to 175°C and is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Substitute parts must maintain electrical compatibility across voltage ratings, current handling capacity, and thermal characteristics while preserving the D2PAK surface mount package format.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	30	V
Continuous Drain Current (Id) @ 25°C	140	A
Rds On (Max) @ Id, Vgs	6	mOhm @ 71A, 10V
Gate Charge (Qg) (Max) @ Vgs	140	nC @ 4.5V
Input Capacitance (Ciss) (Max) @ Vds	5000	pF @ 25V
Power Dissipation (Max)	3.8 / 200	W (Ta) / W (Tc)
Operating Temperature Range	-55 to 175	°C
Package Type	D2PAK (TO-263-3)	Surface Mount
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the IRL3803SPBF is determined by the following critical parameters:

Primary Compatibility Criteria:

Drain-to-Source Voltage (Vdss): Must equal or exceed 30V
Package Type: Must be D2PAK (TO-263-3) surface mount
FET Type: Must be N-Channel MOSFET
Operating Temperature Range: Must span -55°C to 175°C
RoHS Compliance: Must maintain ROHS3 status

Secondary Performance Criteria:

Continuous Drain Current (Id): Determines thermal and power handling equivalence
On-State Resistance (Rds On): Affects power dissipation and efficiency
Gate Charge (Qg): Influences switching speed and drive requirements
Input Capacitance (Ciss): Impacts gate drive circuit design

The identified substitute parts maintain identical voltage ratings and package specifications while offering variations in current handling and on-state resistance characteristics.

Parameter Comparison

Parameter	IRL3803SPBF (Main)	PSMN4R3-30BL,118	PSMN017-30BL,118	Unit
Manufacturer	Infineon Technologies	Nexperia USA Inc.	Nexperia USA Inc.	—
Drain to Source Voltage (Vdss)	30	30	30	V
Continuous Drain Current (Id) @ 25°C	140	100	32	A
Rds On (Max) @ Vgs 10V	6 @ 71A	4.1 @ 15A	17 @ 10A	mOhm
Gate Charge (Qg) (Max)	140 @ 4.5V	41.5 @ 10V	10.7 @ 10V	nC
Input Capacitance (Ciss) (Max)	5000 @ 25V	2400 @ 15V	552 @ 15V	pF
Power Dissipation (Max)	200 (Tc)	103 (Tc)	47 (Tc)	W
Operating Temperature Range	-55 to 175	-55 to 175	-55 to 175	°C
Package Type	D2PAK (TO-263-3)	D2PAK (TO-263-3)	D2PAK (TO-263-3)	—
Product Status	Discontinued	Active	Obsolete	—
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	—

Engineering Selection Recommendations

PSMN4R3-30BL,118 (Nexperia USA Inc.)

This substitute maintains the closest electrical performance to the IRL3803SPBF. It delivers 100A continuous drain current against the original 140A specification, representing a 71% current capacity match. The on-state resistance of 4.1 mOhm at 10V provides superior efficiency compared to the original 6 mOhm specification. Maximum power dissipation is rated at 103W (Tc), sufficient for applications where the full 140A capacity of the original part is not required. This part is currently in active production status, ensuring long-term availability. ROHS3 compliance and MSL 1 rating match the original device specifications. The D2PAK package is identical, enabling direct mechanical substitution.

PSMN017-30BL,118 (Nexperia USA Inc.)

This substitute provides reduced current capacity at 32A continuous drain current, representing 23% of the original 140A specification. On-state resistance is 17 mOhm at 10V, higher than both the original part and the PSMN4R3-30BL alternative. Maximum power dissipation is 47W (Tc). This part is classified as obsolete, limiting its suitability for new designs or long-term production applications. ROHS3 compliance and MSL 1 rating are maintained. The D2PAK package format is identical. This substitute is applicable only to applications with significantly reduced current requirements.

Selection Basis:

Substitution decisions must be based on application current requirements. The PSMN4R3-30BL,118 is the preferred substitute for applications requiring current capacity between 71A and 140A, with active product status ensuring supply chain continuity. The PSMN017-30BL,118 is suitable only for applications with maximum current requirements below 32A and where obsolete part status is acceptable.

All three devices maintain identical 30V voltage ratings, D2PAK package specifications, -55°C to 175°C operating temperature ranges, and ROHS3 compliance status.

Frequently Asked Questions (FAQ)

Q: Can the PSMN4R3-30BL,118 directly replace the IRL3803SPBF in all applications?

A: Direct replacement is possible only in applications where the continuous drain current requirement does not exceed 100A. The PSMN4R3-30BL,118 is rated for 100A continuous drain current compared to the original 140A specification. Applications requiring the full 140A capacity must use alternative parts or parallel device configurations. The D2PAK package format is identical, enabling mechanical substitution without PCB redesign.

Q: What are the implications of the higher on-state resistance in the PSMN017-30BL,118?

A: The PSMN017-30BL,118 exhibits 17 mOhm on-state resistance at 10V, compared to 6 mOhm for the original IRL3803SPBF. This results in increased power dissipation during conduction. For a given drain current, power loss is proportional to Rds On multiplied by the square of the current. Applications with high continuous current will experience significantly elevated thermal loads with this substitute. This part is suitable only for low-current applications below 32A.

Q: Are there package compatibility concerns when substituting these parts?

A: All three devices use the D2PAK (TO-263-3) surface mount package with identical pinout and thermal tab configuration. No PCB layout modifications are required for mechanical substitution. Thermal management considerations may differ due to variations in power dissipation ratings, but the physical package footprint remains unchanged.

Q: What is the significance of the product status differences?

A: The PSMN4R3-30BL,118 is in active production status, ensuring availability for current and future orders. The PSMN017-30BL,118 is classified as obsolete, indicating discontinued manufacturing. For new designs or applications requiring long-term supply assurance, the active-status PSMN4R3-30BL,118 is the appropriate choice. Obsolete parts may have limited inventory and extended lead times.

Q: How do gate charge differences affect circuit design?

A: The original IRL3803SPBF specifies 140 nC gate charge at 4.5V, while the PSMN4R3-30BL,118 specifies 41.5 nC at 10V. Lower gate charge reduces the energy required to switch the device and decreases switching losses. The PSMN4R3-30BL,118 requires less gate drive current and power, potentially allowing use of lower-capacity gate drive circuits. The PSMN017-30BL,118 specifies 10.7 nC, the lowest of the three devices.

Q: Are there compliance or regulatory differences between these parts?

A: All three devices maintain ROHS3 compliance and MSL 1 (unlimited moisture sensitivity) ratings. REACH status is unaffected for all parts. ECCN classification is EAR99 for all devices. No regulatory or compliance barriers exist to substitution from a compliance perspective.

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