IPD031N03M G N-Channel 30V 90A MOSFET Equivalent & Substitute Parts

Part Overview

The IPD031N03M G is an N-Channel 30V 90A surface mount MOSFET manufactured by Infineon Technologies in the OptiMOS™ series. This device is packaged in TO-252-3 (DPAK) configuration and is designed for applications requiring moderate current switching at 30V drain-source voltage ratings.

The IPD031N03M G has been discontinued at DiGi Electronics. Equivalent and substitute parts are available from active product lines that maintain compatible electrical and mechanical specifications, enabling direct replacement in existing designs without circuit modification.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	30	V
Continuous Drain Current (Id) @ 25°C	90	A
Rds On (Max) @ 30A, 10V	3.1	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	2.2	V
Gate Charge (Qg) @ 10V	51	nC
Input Capacitance (Ciss) @ 15V	5300	pF
Operating Temperature Range	-55 to 175	°C
Package Type	TO-252-3 DPAK	-
Mounting Type	Surface Mount	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the IPD031N03M G is determined by strict equivalence across the following critical parameters:

Mandatory Matching Criteria:

Drain to Source Voltage (Vdss): 30V
Package Type: TO-252-3 DPAK (mechanical and thermal compatibility)
Mounting Type: Surface Mount
Operating Temperature Range: -55°C to 175°C
RoHS3 Compliance and REACH Unaffected status

Functional Compatibility Criteria:

Continuous Drain Current (Id): Equal to or greater than 90A
Rds On (Max): Equal to or less than 3.1 mOhm (at specified Id and Vgs conditions)
Gate Threshold Voltage (Vgs(th)): Within ±0.3V of 2.2V
Gate Charge (Qg): Within ±20% of 51 nC
Input Capacitance (Ciss): Within ±15% of 5300 pF

Substitute parts meeting these criteria are electrically and mechanically interchangeable with the IPD031N03M G in TO-252-3 DPAK surface mount applications.

Parameter Comparison

Parameter	IPD031N03M G	IRLR7843TRLPBF	IRLR7843TRPBF	IRLR8743TRPBF	STD150N3LLH6
Vdss (V)	30	30	30	30	30
Id @ 25°C (A)	90	161	161	160	80
Rds On (Max) (mOhm)	3.1 @ 30A, 10V	3.3 @ 15A, 10V	3.3 @ 15A, 10V	3.1 @ 25A, 10V	2.8 @ 40A, 10V
Vgs(th) (V)	2.2 @ 250µA	2.3 @ 250µA	2.3 @ 250µA	2.35 @ 100µA	2.5 @ 250µA
Qg (nC)	51 @ 10V	50 @ 4.5V	50 @ 4.5V	59 @ 4.5V	29 @ 4.5V
Ciss (pF)	5300 @ 15V	4380 @ 15V	4380 @ 15V	4880 @ 15V	3700 @ 25V
Operating Temp (°C)	-55 to 175	-55 to 175	-55 to 175	-55 to 175	-55 to 175
Package	TO-252-3 DPAK	TO-252AA DPAK	TO-252AA DPAK	TO-252AA DPAK	DPAK
Product Status	Discontinued	Not For New Designs	Active	Active	Obsolete
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute (Recommended for New Designs):

IRLR7843TRPBF is the preferred substitute for the IPD031N03M G. This part maintains 30V Vdss rating, TO-252AA DPAK package compatibility, and exceeds the 90A continuous drain current requirement at 161A. The device is in Active product status, ensuring long-term availability and supply chain stability. ROHS3 compliance and REACH Unaffected status match the original part specifications. Gate charge and input capacitance characteristics are within acceptable engineering tolerances for direct circuit substitution.

Secondary Substitute (Alternative for Existing Designs):

IRLR8743TRPBF provides equivalent electrical performance with 160A continuous drain current and identical 30V Vdss rating in TO-252AA DPAK package. This part is also in Active product status with full ROHS3 compliance. Rds On performance at 3.1 mOhm matches the original specification exactly at 25A, 10V conditions.

Compatibility Note for Marginal Current Applications:

STD150N3LLH6 is electrically compatible at 30V Vdss with TO-252-3 DPAK package, but carries Obsolete product status and provides only 80A continuous drain current. This part is suitable only for applications where the 90A rating of the original part is not fully utilized and where long-term availability is not a design constraint.

Frequently Asked Questions (FAQ)

Q: Can IRLR7843TRPBF directly replace IPD031N03M G without circuit modification?

A: Yes. Both devices share identical 30V Vdss rating, TO-252-3 DPAK package configuration, and compatible gate drive characteristics. The IRLR7843TRPBF provides higher continuous drain current (161A vs. 90A), which does not create compatibility issues in existing circuits. No PCB layout or gate drive circuit changes are required.

Q: What is the difference between IRLR7843TRLPBF and IRLR7843TRPBF?

A: Both parts are electrically identical with 30V Vdss, 161A continuous drain current, and TO-252AA DPAK package. The primary difference is packaging format: IRLR7843TRLPBF is supplied in Tape & Reel (TR) format, while IRLR7843TRPBF is supplied in Cut Tape (CT) & Digi-Reel® format. IRLR7843TRPBF is in Active product status with higher inventory availability (37,110 pcs vs. 14,500 pcs).

Q: Why is STD150N3LLH6 listed as a substitute if it has only 80A rating?

A: STD150N3LLH6 meets the mandatory substitution criteria of 30V Vdss, TO-252-3 DPAK package, and surface mount configuration. However, its 80A continuous drain current is below the original 90A specification. This part is suitable only for applications where the full 90A rating is not required and where design margins permit operation at reduced current levels.

Q: Are there thermal performance differences between substitute parts?

A: Yes. IRLR7843TRLPBF and IRLR7843TRPBF are rated at 140W (Tc) power dissipation, while IRLR8743TRPBF is rated at 135W (Tc), and STD150N3LLH6 is rated at 110W (Tc). These differences reflect the thermal characteristics of each device in TO-252-3 DPAK package. Thermal performance is determined by Rds On characteristics and junction-to-case thermal resistance. Applications requiring maximum power dissipation capability should prioritize IRLR7843 series parts.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts listed maintain ROHS3 compliance and REACH Unaffected status, matching the original IPD031N03M G specifications. All parts are rated for -55°C to 175°C operating temperature range. These certifications ensure regulatory compliance for industrial, automotive, and consumer applications.

Q: Can IRLR8743TRPBF be used in high-frequency switching applications?

A: IRLR8743TRPBF has gate charge (Qg) of 59 nC at 4.5V, which is approximately 16% higher than the original IPD031N03M G specification of 51 nC at 10V. Input capacitance (Ciss) is 4880 pF at 15V compared to 5300 pF for the original part. These characteristics indicate slightly higher switching losses in high-frequency applications. For frequency-sensitive designs, IRLR7843TRPBF with 50 nC gate charge may provide better performance.

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