IRFS3206PBF N-Channel 60V 120A MOSFET Equivalent & Substitute Parts

Part Overview

The IRFS3206PBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 60V drain-to-source voltage and 120A continuous drain current in a surface mount D2PAK package. This device is classified as discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

The IRFS3206PBF belongs to the HEXFET® series and is designed for high-current switching applications requiring robust thermal performance at 300W maximum power dissipation. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating the D2PAK surface mount package format.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	60	V
Continuous Drain Current (Id) @ 25°C	120	A (Tc)
On-State Resistance (Rds On) @ 75A, 10V	3	mOhm
Gate Threshold Voltage (Vgs(th)) @ 150µA	4	V
Gate Charge (Qg) @ 10V	170	nC
Power Dissipation (Max)	300	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	TO-263-3, D2PAK	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the IRFS3206PBF is determined by the following criteria:

Primary Electrical Parameters:

Drain-to-Source Voltage (Vdss): Must equal or exceed 60V
Continuous Drain Current (Id): Must equal or exceed 120A at 25°C
Gate Drive Voltage: 10V nominal operation
Operating Temperature Range: -55°C to 175°C (TJ)

Secondary Electrical Parameters:

On-State Resistance (Rds On): Lower values indicate improved performance; maximum acceptable values determined by thermal budget
Gate Charge (Qg): Affects switching speed and drive circuit requirements
Input Capacitance (Ciss): Influences gate drive circuit design

Mechanical & Packaging Requirements:

Package: TO-263-3 / D2PAK surface mount format
Mounting Type: Surface mount
Lead configuration: 2 Leads + Tab

Compliance & Status:

RoHS3 Compliance: Required
Moisture Sensitivity Level (MSL): 1 (Unlimited)
Product Status: Active preferred; Obsolete acceptable with inventory verification

Substitute parts are grouped into two categories: Direct Manufacturer Recommended (electrically optimized for the application) and Functional Equivalents (meeting minimum electrical and mechanical requirements).

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On (mOhm)	Qg (nC)	Power Diss. (W)	Status	Package
IRFS3206PBF	Infineon	60	120 (Tc)	3.0 @ 75A, 10V	170 @ 10V	300 (Tc)	Discontinued	D2PAK
IPB029N06N3GATMA1	Infineon	60	120 (Tc)	2.9 @ 100A, 10V	165 @ 10V	188 (Tc)	Active	D2PAK
PSMN1R7-60BS,118	Nexperia	60	120 (Tc)	2.0 @ 25A, 10V	137 @ 10V	306 (Tc)	Active	D2PAK
AOB266L	Alpha & Omega	60	140 (Tc)	3.2 @ 20A, 10V	80 @ 10V	268 (Tc)	Active	D2PAK
PSMN3R0-60BS,118	Nexperia	60	100 (Tc)	3.2 @ 25A, 10V	130 @ 10V	306 (Tc)	Active	D2PAK
DMTH6004SCTBQ-13	Diodes Inc.	60	100 (Tc)	3.4 @ 100A, 10V	95.4 @ 10V	136 (Tc)	Active	D2PAK
PSMN004-60B,118	Nexperia	60	75 (Tc)	3.6 @ 25A, 10V	168 @ 10V	230 (Tc)	Active	D2PAK
BUK964R2-55B,118	Nexperia	55	75 (Tc)	3.7 @ 25A, 10V	95 @ 5V	300 (Tc)	Active	D2PAK
FDB86566-F085	onsemi	60	110 (Tc)	2.7 @ 80A, 10V	110 @ 10V	176 (Tj)	Obsolete	D2PAK

Engineering Selection Recommendations

Tier 1: Direct Manufacturer Recommended Substitutes

IPB029N06N3GATMA1 (Infineon OptiMOS™ series) is the primary recommended substitute. This part maintains identical voltage and current ratings (60V, 120A) with improved on-state resistance (2.9 mOhm vs. 3.0 mOhm) and reduced gate charge (165 nC vs. 170 nC). Product status is Active with 17,001 units in stock. The OptiMOS™ technology provides enhanced switching characteristics suitable for high-frequency applications. RoHS3 compliance and AEC-Q101 qualification are maintained.

PSMN1R7-60BS,118 (Nexperia TrenchMOS™ series) provides superior on-state resistance (2.0 mOhm) and lowest gate charge (137 nC) among 120A-rated alternatives, enabling reduced switching losses and improved thermal performance. Power dissipation rating of 306W exceeds the original specification. Active product status with 1,900 units available. Suitable for applications prioritizing efficiency.

Tier 2: Functional Equivalents with Reduced Current Rating

PSMN3R0-60BS,118 (Nexperia) and DMTH6004SCTBQ-13 (Diodes Incorporated) are rated for 100A continuous drain current, representing a 17% reduction from the original 120A specification. Both maintain 60V voltage rating and D2PAK packaging. DMTH6004SCTBQ-13 includes AEC-Q101 automotive qualification. These parts are suitable for applications where peak current demands do not consistently reach 120A.

Tier 3: Reduced Voltage or Current Rating

BUK964R2-55B,118 (Nexperia) operates at 55V maximum drain-to-source voltage, representing a 5V reduction from the original specification. Continuous drain current is limited to 75A. This part is suitable only for applications with confirmed voltage and current margins below the original ratings. AEC-Q101 automotive qualification is provided.

PSMN004-60B,118 (Nexperia) maintains 60V rating but is limited to 75A continuous drain current. Applicable to designs with reduced current requirements.

Tier 4: Obsolete Alternatives

FDB86566-F085 (onsemi PowerTrench®) is classified as Obsolete but maintains 60V/110A ratings with competitive on-state resistance (2.7 mOhm). AEC-Q101 automotive qualification is provided. Use only when inventory is confirmed and long-term supply is not required.

AOB266L (Alpha & Omega) provides the highest continuous drain current rating (140A) at 60V with lowest gate charge (80 nC). Suitable for applications requiring maximum current headroom. Active product status with 10,165 units in stock.

All recommended substitutes maintain RoHS3 compliance, MSL Level 1 (Unlimited), and operating temperature range of -55°C to 175°C.

Frequently Asked Questions (FAQ)

Q1: Can IPB029N06N3GATMA1 directly replace IRFS3206PBF without circuit modifications?

A: Yes. IPB029N06N3GATMA1 maintains identical voltage (60V) and current (120A) ratings with compatible D2PAK packaging. On-state resistance is improved (2.9 mOhm vs. 3.0 mOhm), and gate charge is reduced (165 nC vs. 170 nC). Gate drive circuits designed for 10V operation require no modification. Thermal performance is enhanced due to lower on-state resistance.

Q2: What is the primary difference between PSMN1R7-60BS,118 and IPB029N06N3GATMA1?

A: Both maintain 60V/120A ratings and D2PAK packaging. PSMN1R7-60BS,118 offers superior on-state resistance (2.0 mOhm vs. 2.9 mOhm) and lower gate charge (137 nC vs. 165 nC), resulting in reduced switching losses and improved efficiency. Power dissipation rating is higher (306W vs. 188W). Selection depends on whether switching speed or thermal margin is prioritized.

Q3: Can PSMN3R0-60BS,118 be used in applications requiring 120A continuous current?

A: No. PSMN3R0-60BS,118 is rated for 100A continuous drain current at 25°C. Use only in applications where sustained current does not exceed 100A. Exceeding this rating will result in excessive junction temperature and potential device failure.

Q4: Why is BUK964R2-55B,118 listed as a substitute if it has lower voltage and current ratings?

A: BUK964R2-55B,118 is included for applications where design margins confirm that operating voltage remains below 55V and current remains below 75A. It is not a direct replacement but a functional alternative for reduced-stress applications. Verify circuit requirements before selection.

Q5: What packaging considerations apply to all listed substitutes?

A: All substitutes use TO-263-3 / D2PAK surface mount package with identical pin configuration (2 Leads + Tab). PCB footprints are compatible. Thermal pad connection to ground plane is critical for all devices to achieve rated power dissipation. Verify PCB layout accommodates the thermal requirements of the selected substitute.

Q6: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitutes are RoHS3 compliant with MSL Level 1 (Unlimited moisture sensitivity). REACH status is unaffected for all parts. Compliance documentation is available from respective manufacturers.

Q7: Which substitute offers the best thermal performance?

A: PSMN1R7-60BS,118 provides the lowest on-state resistance (2.0 mOhm) among 120A-rated alternatives, resulting in the lowest conduction losses. However, power dissipation rating (306W) must be evaluated against circuit thermal design. For applications with constrained thermal budgets, IPB029N06N3GATMA1 offers balanced performance with active product status and high inventory availability.

Q8: Can AOB266L be used for applications requiring sustained 120A operation?

A: AOB266L is rated for 140A continuous drain current at 25°C, exceeding the original 120A requirement. It is suitable for applications requiring maximum current headroom. On-state resistance (3.2 mOhm) is comparable to the original part. Gate charge is significantly lower (80 nC), enabling faster switching. Active product status with substantial inventory (10,165 units) supports long-term supply.

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