IRFB3206GPBF N-Channel 60V 120A MOSFET Equivalent & Substitute Parts

Part Overview

The IRFB3206GPBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 60V drain-to-source voltage and 120A continuous drain current at 25°C. This device features the HEXFET® series technology and is housed in a TO-220AB through-hole package with a maximum power dissipation of 300W at case temperature. The part is classified as "Not For New Designs," indicating it has been superseded in Infineon's product portfolio. Equivalent and substitute parts are necessary for applications requiring continued supply, design flexibility, or performance optimization within the specified electrical and mechanical parameters.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	60	V
Continuous Drain Current (Id) @ 25°C	120	A (Tc)
On-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-220AB	Through Hole
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the IRFB3206GPBF 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 case temperature (Tc)
On-Resistance (Rds On): Must not exceed 3mOhm at specified test conditions to maintain thermal performance
Package Type: Must be TO-220AB or TO-220-3 (mechanically compatible through-hole packages)
Operating Temperature Range: Must span -55°C to 175°C minimum
Compliance: RoHS3 compliant; REACH unaffected status required

Substitution Logic: Parts are grouped into two categories based on electrical equivalence:

Category 1 – Direct Equivalents (Identical Specifications): Parts that match all critical parameters including Vdss, Id, Rds On, and package type. These parts are pin-compatible and require no circuit modifications.

Category 2 – Functional Equivalents (Within Tolerance): Parts that meet or exceed Vdss and Id ratings but may have variations in Rds On, gate charge, or input capacitance within acceptable engineering margins. These parts are functionally compatible but may exhibit different thermal or switching characteristics.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ Tc (A)	Rds On (mOhm)	Qg @ 10V (nC)	Package	Status
IRFB3206GPBF	Infineon	60	120	3.0 @ 75A	170	TO-220AB	Not For New Designs
IRFB3206PBF	Infineon	60	120	3.0 @ 75A	170	TO-220AB	Active
FDP030N06	onsemi	60	120	3.2 @ 75A	151	TO-220-3	Active
PSMN3R0-60PS,127	Nexperia USA Inc.	60	100	3.0 @ 25A	130	TO-220AB	Obsolete
PSMN4R6-60PS,127	Nexperia USA Inc.	60	100	4.6 @ 25A	70.8	TO-220AB	Obsolete
AOT266L	Alpha & Omega Semiconductor Inc.	60	140	3.5 @ 20A	90	TO-220	Active
DMTH6004SCT	Diodes Incorporated	60	100	3.65 @ 100A	95.4	TO-220-3	Active
FDP038AN06A0	onsemi	60	80	3.8 @ 80A	124	TO-220-3	Active

Engineering Selection Recommendations

Direct Replacement (No Circuit Modification Required):

IRFB3206PBF is the primary direct substitute for IRFB3206GPBF. Both parts are manufactured by Infineon Technologies with identical electrical specifications (60V, 120A, 3mOhm Rds On). The IRFB3206PBF carries Active product status, ensuring continued availability and supply chain stability. Both parts are RoHS3 compliant and REACH unaffected. The only distinction is product lifecycle status; IRFB3206PBF is recommended for new designs and ongoing production.

Functional Equivalents (Active Status, Recommended for New Designs):

FDP030N06 (onsemi, PowerTrench® series) meets the 60V/120A specification with 3.2mOhm Rds On at 75A, representing a 6.7% increase in on-resistance compared to the IRFB3206GPBF. This part is Active and RoHS3 compliant. The slightly higher Rds On results in marginally increased power dissipation but remains within acceptable thermal limits for TO-220-3 package applications.

AOT266L (Alpha & Omega Semiconductor Inc.) exceeds the current rating at 140A continuous drain current while maintaining 60V Vdss and 3.5mOhm Rds On. This part provides performance headroom for applications requiring higher current capacity. Active product status and RoHS3 compliance are confirmed.

Obsolete Status Parts (Not Recommended for New Designs):

PSMN3R0-60PS,127 and PSMN4R6-60PS,127 (Nexperia USA Inc.) are classified as Obsolete. While both are RoHS3 compliant and REACH unaffected, their discontinued status presents supply chain risk. PSMN3R0-60PS,127 supports only 100A continuous drain current, below the 120A requirement. PSMN4R6-60PS,127 exhibits 4.6mOhm Rds On, representing a 53% increase in on-resistance, resulting in significantly higher power dissipation and thermal stress.

Limited Current Capacity (Not Recommended as Primary Substitutes):

DMTH6004SCT (Diodes Incorporated) and FDP038AN06A0 (onsemi) both support reduced continuous drain current (100A and 80A respectively) compared to the 120A specification of IRFB3206GPBF. These parts are suitable only for applications where the actual operating current does not exceed their rated limits. Both are Active and RoHS3 compliant.

Frequently Asked Questions (FAQ)

Q1: Can IRFB3206PBF be used as a direct replacement for IRFB3206GPBF without any circuit modifications?

A: Yes. IRFB3206PBF is a direct equivalent with identical electrical and mechanical specifications. Both parts feature 60V Vdss, 120A continuous drain current, 3mOhm Rds On, and TO-220AB packaging. Pin configuration and thermal characteristics are identical. No circuit modifications are required.

Q2: What is the difference between TO-220AB and TO-220-3 packages, and are they interchangeable?

A: TO-220AB and TO-220-3 are mechanically compatible through-hole packages with identical pin pitch and lead spacing. Both accommodate standard TO-220 mounting hardware and PCB footprints. The primary difference is in lead forming and mechanical robustness; TO-220AB features formed leads for enhanced mechanical stability. For most applications, parts in either package can be substituted provided electrical specifications are met. Verify PCB footprint compatibility before substitution.

Q3: Why is PSMN3R0-60PS,127 listed as a substitute if it only supports 100A instead of 120A?

A: PSMN3R0-60PS,127 is listed based on the provided input data as a substitute option. However, its 100A continuous drain current rating falls below the 120A specification of IRFB3206GPBF. This part is suitable only for applications where actual operating current does not exceed 100A. For applications requiring the full 120A capability, this part is not recommended.

Q4: How does on-resistance (Rds On) affect device selection?

A: On-resistance directly determines power dissipation and thermal performance. Lower Rds On reduces I²R losses and heat generation. The IRFB3206GPBF specifies 3mOhm Rds On at 75A and 10V gate drive. Substitute parts with higher Rds On (such as PSMN4R6-60PS,127 at 4.6mOhm) will generate proportionally more heat. For thermal-limited applications, verify that substitute parts with higher Rds On do not exceed the thermal design margin of the application.

Q5: What does "Not For New Designs" status mean for IRFB3206GPBF?

A: "Not For New Designs" indicates that Infineon has discontinued active development and marketing of this part. While existing inventory may be available, the manufacturer does not recommend its use in new product designs. IRFB3206PBF (Active status) is the recommended replacement for new designs. Existing applications using IRFB3206GPBF should transition to IRFB3206PBF to ensure long-term supply chain stability.

Q6: Are all listed substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this reference are RoHS3 compliant and REACH unaffected, matching the compliance status of IRFB3206GPBF. This ensures regulatory compatibility for applications subject to RoHS and REACH requirements.

Q7: Which substitute part offers the best performance improvement over IRFB3206GPBF?

A: AOT266L provides the highest current rating at 140A continuous drain current while maintaining 60V Vdss and 3.5mOhm Rds On. This part offers performance headroom for applications requiring higher current capacity. FDP030N06 provides equivalent 120A current rating with slightly higher Rds On (3.2mOhm) and is available from onsemi with Active product status.

Q8: Can I use a substitute part with higher Vdss rating (e.g., 100V instead of 60V)?

A: Higher Vdss ratings are not substitutes for 60V-rated devices in this context. The IRFB3206GPBF is specified for 60V maximum drain-to-source voltage. Using a higher-voltage device does not provide functional equivalence and may introduce unnecessary cost and complexity. Substitutes must match or exceed the 60V specification without exceeding it unnecessarily.

Q9: What is the significance of gate charge (Qg) differences among substitute parts?

A: Gate charge affects switching speed and gate drive circuit requirements. Lower gate charge (such as PSMN4R6-60PS,127 at 70.8nC) enables faster switching and reduces gate drive power consumption. Higher gate charge (such as FDP030N06 at 151nC) requires more gate drive energy but may provide improved noise immunity. For most applications, gate charge variations within the listed parts are acceptable; verify gate drive circuit capability if switching frequency is critical.

Q10: Is inventory availability a factor in selecting a substitute part?

A: Inventory availability is not an engineering substitution criterion and is not considered in this reference. However, the provided data indicates current stock levels for reference. For supply chain planning, consult with component distributors for real-time availability and lead time information.

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