FGA90N33ATTU IGBT Equivalent & Substitute Parts

Part Overview

The FGA90N33ATTU is a Trench IGBT manufactured by onsemi, rated for 330V collector-emitter breakdown voltage with a maximum collector current of 90A and power dissipation of 223W. This device is packaged in a TO-3P through-hole configuration and is currently classified as obsolete. Due to its obsolete status, identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications.

Key Parameters

Parameter	Value	Unit
IGBT Type	Trench	—
Voltage - Collector Emitter Breakdown (Max)	330	V
Current - Collector (Ic) (Max)	90	A
Current - Collector Pulsed (Icm)	330	A
Vce(on) (Max) @ Vge, Ic	1.4V @ 15V, 20A	—
Power - Max	223	W
Gate Charge	95	nC
Operating Temperature Range	-55 to 150	°C (TJ)
Mounting Type	Through Hole	—
Package / Case	TO-3P-3, SC-65-3	—
Input Type	Standard	—

Substitute Part Grouping Explanation

Substitution of the FGA90N33ATTU is determined by strict equivalence across the following critical parameters:

Voltage Rating: 330V collector-emitter breakdown voltage
Current Rating: 90A maximum collector current
Power Dissipation: 223W maximum power
IGBT Type: Trench technology
Saturation Voltage: 1.4V @ 15V, 20A
Gate Charge: 95 nC
Operating Temperature Range: -55°C to 150°C (TJ)
Package Configuration: TO-3P through-hole mounting
Input Type: Standard

The substitute part FGA90N33ATDTU meets all these electrical and mechanical parameters identically, making it a direct parametric equivalent. The primary distinction between the main part and its substitute is product status and compliance certifications.

Parameter Comparison

Parameter	FGA90N33ATTU	FGA90N33ATDTU	Match
Manufacturer	onsemi	onsemi	✓
Category	Transistors, IGBTs	Transistors, IGBTs	✓
IGBT Type	Trench	Trench	✓
Voltage - Collector Emitter Breakdown (Max)	330 V	330 V	✓
Current - Collector (Ic) (Max)	90 A	90 A	✓
Current - Collector Pulsed (Icm)	330 A	330 A	✓
Vce(on) (Max) @ Vge, Ic	1.4V @ 15V, 20A	1.4V @ 15V, 20A	✓
Power - Max	223 W	223 W	✓
Gate Charge	95 nC	95 nC	✓
Operating Temperature Range	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	✓
Mounting Type	Through Hole	Through Hole	✓
Package / Case	TO-3P-3, SC-65-3	TO-3P-3, SC-65-3	✓
Input Type	Standard	Standard	✓
Product Status	Obsolete	Active	—
RoHS Status	Not specified	ROHS3 Compliant	—
Reverse Recovery Time (trr)	Not specified	23 ns	—

Engineering Selection Recommendations

The FGA90N33ATDTU is the direct substitute for the obsolete FGA90N33ATTU. All electrical parameters, mechanical specifications, and thermal characteristics are identical. The substitute part offers the following advantages:

Active Product Status: The FGA90N33ATDTU is currently in active production, ensuring long-term availability and supply chain reliability.
Enhanced Compliance: The substitute part carries ROHS3 compliance certification, meeting current environmental and regulatory standards.
Documented Performance: The substitute includes specified reverse recovery time (trr) of 23 ns, providing additional performance characterization.
Identical Electrical Performance: All critical parameters including voltage, current, power dissipation, saturation voltage, and gate charge are identical.
Pin-Compatible Packaging: Both parts use identical TO-3P through-hole packaging, enabling direct board-level substitution without layout modifications.

Selection of the FGA90N33ATDTU eliminates obsolescence risk while maintaining full electrical and mechanical compatibility with existing designs.

Frequently Asked Questions (FAQ)

Q: Can the FGA90N33ATDTU be used as a direct replacement for the FGA90N33ATTU?

A: Yes. The FGA90N33ATDTU is a direct parametric equivalent. All electrical ratings, thermal specifications, and package configurations are identical. No circuit modifications or board redesign are required.

Q: Are there any differences in switching performance between these parts?

A: Both parts share identical gate charge (95 nC) and saturation voltage (1.4V @ 15V, 20A) specifications. The substitute part includes documented reverse recovery time of 23 ns. No performance degradation occurs with substitution.

Q: Is the TO-3P package identical between both parts?

A: Yes. Both the FGA90N33ATTU and FGA90N33ATDTU use the TO-3P-3 package configuration with SC-65-3 designation. Pin assignments, lead spacing, and mounting requirements are identical.

Q: What is the primary reason to transition from FGA90N33ATTU to FGA90N33ATDTU?

A: The FGA90N33ATTU is classified as obsolete, creating supply chain risk. The FGA90N33ATDTU is an active product with identical specifications, ensuring continued availability and compliance with current environmental standards.

Q: Does the substitute part meet current regulatory requirements?

A: Yes. The FGA90N33ATDTU carries ROHS3 compliance certification and maintains REACH Unaffected status, meeting current environmental and regulatory requirements.

Q: Are thermal characteristics identical between the two parts?

A: Yes. Both parts operate across the identical temperature range of -55°C to 150°C (TJ) and dissipate 223W maximum power. Thermal management requirements remain unchanged.

Q: Can existing inventory of FGA90N33ATTU be mixed with FGA90N33ATDTU in production?

A: Yes. The parts are electrically and mechanically identical. Mixed inventory presents no compatibility or performance issues.

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