FDI040N06 Equivalent & Substitute Parts

Part Overview

The FDI040N06 is an N-Channel MOSFET manufactured by onsemi, rated for 60V drain-to-source voltage with 120A continuous drain current at 25°C. This device features the PowerTrench® technology platform and is housed in a TO-262 (I2PAK) through-hole package. The FDI040N06 is classified as obsolete, necessitating identification of equivalent substitute components for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value	Unit
FET Type	N-Channel	—
Drain to Source Voltage (Vdss)	60	V
Current - Continuous Drain (Id) @ 25°C	120	A (Tc)
Rds On (Max) @ 75A, 10V	4	mOhm
Power Dissipation (Max)	231	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Mounting Type	Through Hole	—
Package	TO-262 (I2PAK)	—

Substitute Part Grouping Explanation

Substitution of the FDI040N06 is determined by electrical and mechanical parameter equivalence within the N-Channel MOSFET category. The critical parameters governing substitution are:

Drain-to-Source Voltage (Vdss): Must equal 60V
Continuous Drain Current (Id): Must equal or exceed 120A at 25°C
Package Type: Must be TO-262 (I2PAK) through-hole configuration
FET Technology: Must be N-Channel MOSFET
Operating Temperature Range: Must support -55°C to 175°C

The FDI030N06 qualifies as a direct substitute based on matching all critical electrical ratings and identical package specifications. Both devices share the same voltage and current ratings, thermal dissipation capability, and physical form factor, enabling direct replacement in circuit applications.

Parameter Comparison

Parameter	FDI040N06	FDI030N06	Unit
FET Type	N-Channel	N-Channel	—
Drain to Source Voltage (Vdss)	60	60	V
Current - Continuous Drain (Id) @ 25°C	120	120	A (Tc)
Drive Voltage (Max Rds On)	10	10	V
Rds On (Max) @ 75A, 10V	4.0	3.2	mOhm
Vgs(th) (Max) @ 250µA	4.5	4.5	V
Vgs (Max)	±20	±20	V
Power Dissipation (Max)	231	231	W (Tc)
Operating Temperature Range	-55 to 175	-55 to 175	°C (TJ)
Mounting Type	Through Hole	Through Hole	—
Package	TO-262 (I2PAK)	TO-262 (I2PAK)	—

Engineering Selection Recommendations

FDI040N06 (Main Part - Obsolete)

The FDI040N06 is designated as obsolete and no longer in active production. While 3900 units remain in current inventory, this part number should not be selected for new designs or long-term procurement strategies.

FDI030N06 (Direct Substitute - Last Time Buy)

The FDI030N06 is the direct electrical and mechanical equivalent of the FDI040N06. This part carries a Last Time Buy status, indicating limited future availability. The FDI030N06 demonstrates improved on-resistance performance (3.2 mOhm versus 4.0 mOhm at 75A, 10V), providing superior thermal efficiency in equivalent applications. The device is RoHS3 compliant and maintains REACH unaffected status. Current inventory of 2000 units supports near-term procurement requirements.

For applications currently utilizing the FDI040N06, transition to the FDI030N06 is supported by identical electrical ratings, thermal specifications, and package configuration. The improved Rds On characteristic of the FDI030N06 represents a performance enhancement suitable for direct substitution.

Frequently Asked Questions (FAQ)

Q: Can the FDI030N06 directly replace the FDI040N06 in existing circuit designs?

A: Yes. Both devices share identical drain-to-source voltage (60V), continuous drain current (120A), power dissipation (231W), and operating temperature range (-55°C to 175°C). The TO-262 (I2PAK) package configuration is identical, enabling direct pin-compatible replacement without circuit modification.

Q: What is the difference in on-resistance between these parts?

A: The FDI030N06 exhibits lower on-resistance (3.2 mOhm) compared to the FDI040N06 (4.0 mOhm) when measured at 75A drain current and 10V gate-source voltage. This represents improved efficiency and reduced power dissipation in the substitute device.

Q: Why is the FDI040N06 listed as obsolete?

A: The FDI040N06 has reached end-of-life status within onsemi's product portfolio. The FDI030N06 serves as the current production equivalent, offering equivalent electrical performance with enhanced on-resistance characteristics.

Q: Are there compliance differences between FDI040N06 and FDI030N06?

A: The FDI030N06 is RoHS3 compliant, while the FDI040N06 compliance status is not specified in available documentation. Both devices maintain REACH unaffected status and share identical ECCN (EAR99) and HTSUS (8541.29.0095) classifications.

Q: What packaging formats are available for the FDI030N06?

A: The FDI030N06 is supplied in tube packaging. The FDI040N06 packaging format is not specified in available data. Both devices utilize the TO-262-3 Long Leads (I2PAK, TO-262AA) physical package.

Q: Is the FDI030N06 suitable for new product designs?

A: The FDI030N06 carries Last Time Buy status, indicating limited future production availability. While suitable for near-term applications, designs requiring extended component availability should evaluate alternative N-Channel 60V MOSFETs from current production lines.

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