STB30NF20 Equivalent & Substitute Parts

Part Overview

The STB30NF20 is an N-Channel MOSFET manufactured by STMicroelectronics, rated for 200V drain-to-source voltage with 30A continuous drain current at 25°C. This device is housed in a D2PAK (TO-263-3) surface mount package and is part of the STripFET™ series. The component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical performance parameters and mechanical compatibility are required due to inventory constraints, design optimization, or application-specific thermal requirements.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	200	V
Continuous Drain Current (Id) @ 25°C	30	A (Tc)
Drive Voltage (Max Rds On)	10	V
Rds On (Max) @ Id, Vgs	75	mOhm @ 15A, 10V
Gate Threshold Voltage Vgs(th) (Max)	4	V @ 250µA
Gate Charge (Qg) (Max)	38	nC @ 10V
Power Dissipation (Max)	125	W (Tc)
Operating Temperature Range	-55 to 150	°C (TJ)
Package Type	D2PAK (TO-263-3)	Surface Mount
FET Type	N-Channel	MOSFET

Substitute Part Grouping Explanation

Substitution of the STB30NF20 N-Channel MOSFET is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

Drain to Source Voltage (Vdss): 200V minimum
FET Type: N-Channel
Technology: MOSFET (Metal Oxide)
Package Type: D2PAK or TO-263 equivalent surface mount
Mounting Type: Surface Mount

Performance Consideration Parameters:

Continuous Drain Current (Id) @ 25°C: Equal to or greater than 30A
Drive Voltage: 10V gate drive compatibility
Gate Threshold Voltage: Compatible gate drive levels
Operating Temperature Range: Minimum -55°C to 150°C

All substitute parts listed maintain identical voltage ratings (200V Vdss), N-Channel topology, and D2PAK surface mount packaging. Variations in continuous drain current, on-resistance, and power dissipation are permitted when the substitute part meets or exceeds the minimum electrical requirements of the primary application.

Parameter Comparison

Parameter	STB30NF20 (STMicroelectronics)	IRFS4620TRLPBF (Infineon)	IXTA50N20P (IXYS)
Drain to Source Voltage (Vdss)	200V	200V	200V
Continuous Drain Current (Id) @ 25°C	30A (Tc)	24A (Tc)	50A (Tc)
Drive Voltage (Max Rds On)	10V	10V	10V
Rds On (Max) @ Id, Vgs	75 mOhm @ 15A, 10V	77.5 mOhm @ 15A, 10V	60 mOhm @ 50A, 10V
Gate Charge (Qg) (Max) @ Vgs	38 nC @ 10V	38 nC @ 10V	70 nC @ 10V
Vgs (Max)	±20V	±20V	±20V
Power Dissipation (Max)	125W (Tc)	144W (Tc)	360W (Tc)
Operating Temperature Range	-55°C to 150°C (TJ)	-55°C to 175°C (TJ)	-55°C to 175°C (TJ)
Package / Case	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK
FET Type	N-Channel	N-Channel	N-Channel
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

STB30NF20 (Primary Component)

The STB30NF20 remains the primary selection when STMicroelectronics sourcing is required or when the 30A continuous drain current and 125W power dissipation specifications are optimized for the application. This component carries Active product status with full RoHS3 compliance, REACH unaffected designation, and unlimited moisture sensitivity rating. The device is suitable for applications requiring the specified thermal and electrical envelope within the -55°C to 150°C operating range.

IRFS4620TRLPBF (Infineon Technologies) - Substitute

The IRFS4620TRLPBF is a direct substitute when Infineon sourcing is preferred or when inventory availability of the primary part is constrained. This device maintains identical 200V Vdss rating and 10V gate drive compatibility. The 24A continuous drain current is lower than the primary part; however, this component is suitable for applications where the 24A specification meets system requirements. The IRFS4620TRLPBF offers extended operating temperature range (-55°C to 175°C) and higher power dissipation (144W) compared to the primary part. RoHS3 compliance and REACH unaffected status are maintained. Packaging is Tape & Reel (TR) format.

IXTA50N20P (IXYS) - Substitute

The IXTA50N20P is a substitute option when higher continuous drain current capacity (50A) and maximum power dissipation (360W) are required for thermal margin or current handling optimization. This device maintains the 200V Vdss rating and 10V gate drive compatibility. The IXTA50N20P provides extended operating temperature range (-55°C to 175°C) and is fully RoHS3 compliant with REACH unaffected status. Gate charge is higher at 70 nC compared to 38 nC for the primary part. Packaging is supplied in Tube format. This component is selected when application thermal requirements or current density considerations necessitate higher power handling capability.

Frequently Asked Questions (FAQ)

Q: Can the IRFS4620TRLPBF replace the STB30NF20 in all applications?

A: The IRFS4620TRLPBF is a substitute when the 24A continuous drain current specification meets application requirements. The lower current rating compared to the STB30NF20 (30A) requires verification that the application does not demand the full 30A capacity. Both devices share identical 200V Vdss, 10V gate drive, and D2PAK packaging, ensuring mechanical and electrical interface compatibility.

Q: What is the primary difference between the IXTA50N20P and the STB30NF20?

A: The IXTA50N20P provides significantly higher continuous drain current (50A versus 30A) and power dissipation (360W versus 125W). Both devices maintain 200V Vdss and 10V gate drive compatibility. The IXTA50N20P is selected when thermal margin or higher current handling is required. Gate charge is higher (70 nC versus 38 nC), which may affect switching speed in gate-drive-limited applications.

Q: Are all three parts compatible with the same PCB layout and gate driver circuit?

A: All three parts share D2PAK (TO-263-3) surface mount packaging and ±20V maximum gate voltage rating, ensuring mechanical compatibility on the same PCB footprint. Gate drive circuits rated for 10V operation are compatible with all three devices. However, the higher gate charge of the IXTA50N20P (70 nC) may require gate driver current capability verification compared to the 38 nC specification of the STB30NF20 and IRFS4620TRLPBF.

Q: What is the impact of operating temperature range differences?

A: The STB30NF20 operates from -55°C to 150°C, while both substitute parts extend to 175°C maximum junction temperature. Applications requiring operation above 150°C must use either the IRFS4620TRLPBF or IXTA50N20P. For applications within the -55°C to 150°C range, all three parts are functionally equivalent from a temperature perspective.

Q: How do on-resistance specifications compare across the three parts?

A: The STB30NF20 specifies 75 mOhm maximum on-resistance at 15A and 10V gate drive. The IRFS4620TRLPBF specifies 77.5 mOhm at identical conditions, representing negligible difference. The IXTA50N20P specifies 60 mOhm at 50A and 10V gate drive, indicating lower on-resistance at higher current levels. On-resistance directly affects power dissipation; lower on-resistance reduces heat generation in high-current applications.

Q: Are all parts RoHS3 compliant and REACH unaffected?

A: Yes. The STB30NF20, IRFS4620TRLPBF, and IXTA50N20P are all RoHS3 compliant with REACH unaffected status. All three devices carry MSL 1 (Unlimited) moisture sensitivity rating, indicating no special moisture handling requirements during storage or assembly.

Q: What packaging format differences exist between the substitute parts?

A: The STB30NF20 is supplied in Cut Tape (CT) and Digi-Reel® packaging. The IRFS4620TRLPBF is supplied in Tape & Reel (TR) format. The IXTA50N20P is supplied in Tube format. All three maintain identical D2PAK surface mount package geometry (TO-263-3), ensuring PCB footprint compatibility regardless of packaging format.

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