IRFS3306TRLPBF N-Channel 60V 120A MOSFET Equivalent & Substitute Parts

Part Overview

The IRFS3306TRLPBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 60V drain-to-source voltage and 120A continuous drain current in a D2PAK surface mount package. This device operates across the temperature range of -55°C to 175°C and is compliant with ROHS3 standards. The part is currently in Active product status with substantial inventory availability (16,560 pieces). Equivalent and substitute parts are identified based on matching or superior electrical performance within compatible package configurations, enabling design flexibility and supply chain alternatives.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	60	V
Continuous Drain Current (Id) @ 25°C	120	A
On-State Resistance (Rds On) @ 75A, 10V	4.2	mOhm
Gate Threshold Voltage (Vgs(th)) @ 150µA	4	V
Gate Charge (Qg) @ 10V	120	nC
Power Dissipation (Max)	230	W
Operating Temperature Range	-55 to 175	°C
Package Type	D2PAK (TO-263-3)	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution of the IRFS3306TRLPBF is determined by the following critical parameters:

Primary Substitution Criteria:

Drain-to-Source Voltage (Vdss): Must equal or exceed 60V
Continuous Drain Current (Id): Must equal or exceed 120A at 25°C
On-State Resistance (Rds On): Lower or equal values indicate improved performance
Package Compatibility: D2PAK (TO-263-3) or compatible surface mount configurations
Gate Drive Voltage: 10V standard drive voltage
Operating Temperature Range: -55°C to 175°C minimum
Compliance: ROHS3 compliant, MSL Level 1

Substitution Logic: Parts are grouped into three categories based on electrical performance relative to the IRFS3306TRLPBF:

Direct Equivalents (60V, 120A class): Parts with matching Vdss and Id ratings in compatible packages
Higher Performance Substitutes (60V, >120A): Parts with superior current handling or lower Rds On, enabling direct replacement with enhanced capability
Voltage-Elevated Substitutes (>60V, ≥120A): Parts with higher voltage ratings suitable for applications with higher system voltage margins

All substitute parts maintain surface mount D2PAK or compatible TO-263 package configurations and operate within the specified temperature range.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On (mOhm)	Qg @ 10V (nC)	Power Dissipation (W)	Package	Product Status
IRFS3306TRLPBF	Infineon	60	120	4.2 @ 75A	120	230	D2PAK	Active
IXFA220N06T3	IXYS	60	220	4.0 @ 100A	136	440	TO-263	Last Time Buy
IXFA230N075T2-7	IXYS	75	230	4.2 @ 50A	178	480	TO-263-7	Active
IXTA140N055T2	IXYS	55	140	5.4 @ 50A	82	250	TO-263	Active
IXTA200N055T2	IXYS	55	200	4.2 @ 50A	109	360	TO-263	Active
IXTA230N075T2-7	IXYS	75	230	4.2 @ 50A	178	480	TO-263-7	Active
STB100N6F7	STMicroelectronics	60	100	5.6 @ 50A	30	125	D2PAK	Active
STB130N6F7	STMicroelectronics	60	80	5.0 @ 40A	42	160	D2PAK	Active
STB160N75F3	STMicroelectronics	75	120	4.0 @ 60A	85	330	D2PAK	Active

Engineering Selection Recommendations

For Direct Replacement (Equivalent Performance):

The STB160N75F3 from STMicroelectronics provides the closest functional equivalence to the IRFS3306TRLPBF. Both devices deliver 120A continuous drain current in D2PAK packaging with matching operating temperature ranges and ROHS3 compliance. The STB160N75F3 operates at 75V (versus 60V), providing enhanced voltage margin in applications where system voltage may exceed nominal 60V. On-state resistance is superior (4.0 mOhm @ 60A versus 4.2 mOhm @ 75A), and power dissipation capability is increased (330W versus 230W). This part is in Active product status with 2,008 units in stock.

For Higher Current Capability:

The IXFA220N06T3 (IXYS) and IXTA200N055T2 (IXYS) offer substantially higher current ratings (220A and 200A respectively) while maintaining 60V and 55V voltage ratings. These parts are suitable for applications requiring current headroom beyond 120A. Both maintain D2PAK or TO-263 compatible packages and ROHS3 compliance. The IXFA220N06T3 is designated Last Time Buy status; the IXTA200N055T2 is Active.

For Voltage-Elevated Applications:

The IXFA230N075T2-7 and IXTA230N075T2-7 (both IXYS) provide 75V ratings with 230A current capability, suitable for systems operating above 60V nominal voltage. Both are in Active product status and ROHS3 compliant. Package configuration is TO-263-7, compatible with D2PAK footprints in most applications.

Inventory and Supply Considerations:

The IRFS3306TRLPBF maintains the highest inventory level (16,560 pieces). The STB160N75F3 (2,008 pieces) and STB130N6F7 (21,300 pieces) offer substantial STMicroelectronics alternatives. IXYS parts range from 834 to 1,569 pieces in stock. All recommended substitutes are ROHS3 compliant with MSL Level 1 (Unlimited moisture sensitivity).

Frequently Asked Questions (FAQ)

Q: Can the STB160N75F3 be used as a direct replacement for the IRFS3306TRLPBF?

A: The STB160N75F3 is functionally compatible as a direct replacement. Both devices are rated for 120A continuous drain current in D2PAK packages with identical operating temperature ranges (-55°C to 175°C) and ROHS3 compliance. The STB160N75F3 operates at 75V versus 60V, providing additional voltage margin. On-state resistance is equivalent or superior (4.0 mOhm @ 60A). No circuit modifications are required for pin-compatible substitution.

Q: What is the difference between the IXFA and IXTA series from IXYS?

A: The IXFA series (HiperFET™, TrenchT3™) and IXTA series (TrenchT2™) represent different technology generations. The IXFA220N06T3 uses TrenchT3™ technology and delivers 220A at 60V. The IXTA series parts (IXTA140N055T2, IXTA200N055T2, IXTA230N075T2-7) use TrenchT2™ technology with ratings from 140A to 230A across 55V and 75V voltage classes. Both series maintain compatible D2PAK/TO-263 packages and ROHS3 compliance. Selection depends on specific current and voltage requirements.

Q: Why do some substitute parts have higher gate charge (Qg) values?

A: Gate charge (Qg) represents the total charge required to switch the MOSFET from off to on state. Higher Qg values typically correlate with higher current ratings and larger die sizes. The IRFS3306TRLPBF has Qg of 120 nC @ 10V. Substitute parts with higher current ratings (IXFA220N06T3 at 136 nC, IXFA230N075T2-7 at 178 nC) exhibit proportionally higher gate charge. This affects gate drive circuit design but does not prevent substitution in applications with adequate gate drive capability.

Q: Are the TO-263-7 packages (IXFA230N075T2-7, IXTA230N075T2-7) compatible with D2PAK footprints?

A: The TO-263-7 package has additional leads compared to standard D2PAK (TO-263-3). While pin pitch and primary drain/source connections are compatible, PCB layout must accommodate the additional leads. In applications where only the three primary pins (Gate, Drain, Source) are utilized, TO-263-7 parts can be mounted on D2PAK footprints with unused leads left unconnected. Verify PCB layout compatibility before substitution.

Q: What is the significance of "Last Time Buy" status for the IXFA220N06T3?

A: Last Time Buy status indicates that the manufacturer (IXYS) will no longer produce this part after existing inventory is depleted. While 1,246 units are currently in stock, this part should not be selected for new long-term production designs. The IXFA220N06T3 is suitable for legacy system support or short-term applications only. For new designs requiring 220A at 60V capability, consider the STB130N6F7 or IXTA200N055T2 as alternatives with Active product status.

Q: Can lower-current parts like STB100N6F7 or STB130N6F7 substitute for the IRFS3306TRLPBF?

A: The STB100N6F7 (100A) and STB130N6F7 (80A) have current ratings below the IRFS3306TRLPBF specification (120A). These parts are not suitable as direct replacements in applications requiring the full 120A capability. However, they may be used in applications where actual operating current is below their ratings. Verify that application peak and continuous current requirements do not exceed the substitute part's rating before selection.

Q: What compliance certifications apply to all recommended substitute parts?

A: All substitute parts listed are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity rating, matching the IRFS3306TRLPBF specifications. All parts are classified under ECCN EAR99 and HTSUS 8541.29.0095 for export purposes. REACH status is Unaffected for all parts. These certifications ensure compatibility with environmental and regulatory requirements across global markets.

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