IRFP450LCPBF Equivalent & Substitute Parts Reference

Part Overview

The IRFP450LCPBF, manufactured by Vishay Siliconix, is an N-Channel MOSFET in the category “Transistors, FETs, MOSFETs.” It features a 500V maximum drain-source voltage, 14A continuous drain current at 25°C, and is housed in a TO-247-3 through-hole package. The part is currently active and complies with ROHS3, MSL1, and REACH standards. Identifying equivalent or substitute models is essential in scenarios such as inventory shortages, multi-sourcing requirements, or supply chain assurance for design continuity, where form, fit, and electrical compatibility must be maintained.

Key Parameters

Manufacturer Part Number	Manufacturer	Drain to Source Voltage (Vdss)	Current - Continuous Drain (Id) @ 25°C	Rds On (Max) @ Id, Vgs	Vgs(th) (Max) @ Id	Gate Charge (Qg) (Max) @ Vgs	Vgs (Max)	Input Capacitance (Ciss) (Max) @ Vds	Power Dissipation (Max)	Operating Temperature	Mounting Type	Supplier Device Package	Package / Case	RoHS Status	Moisture Sensitivity Level (MSL)	REACH Status	Product Status
IRFP450LCPBF	Vishay Siliconix	500 V	14A (Tc)	400mOhm @ 8.4A, 10V	4V @ 250µA	74 nC @ 10V	±30V	2200 pF @ 25 V	190W (Tc)	-55°C ~ 150°C (TJ)	Through Hole	TO-247AC	TO-247-3	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Active

Substitute Part Grouping Explanation

Substitution is based on matching parameters within the category of “Transistors, FETs, MOSFETs.” Acceptable substitutes must have the following strictly equivalent characteristics:

Category: Transistors, FETs, MOSFETs
FET Type: N-Channel
Drain to Source Voltage (Vdss): 500V
Current - Continuous Drain (Id) @ 25°C: 14A
Vgs(th), Rds On, Gate Charge, Input Capacitance, and Power Dissipation within closely specified ranges
Mounting Type and Package: Through Hole, TO-247-3
RoHS Status, Moisture Sensitivity Level (MSL), and REACH Status identical or better
Operating Temperature: -55°C ~ 150°C (TJ)

Only those models which fully align with these explicit, provided specifications are included as substitutes.

Parameter Comparison

Parameter	IRFP450LCPBF (Vishay Siliconix)	STW14NK50Z (STMicroelectronics)
Category	Transistors, FETs, MOSFETs	Transistors, FETs, MOSFETs
Description	MOSFET N-CH 500V 14A TO247-3	MOSFET N-CH 500V 14A TO247-3
Drain to Source Voltage (Vdss)	500 V	500 V
Current - Continuous Drain (Id) @ 25°C	14A (Tc)	14A (Tc)
Rds On (Max) @ Id, Vgs	400mOhm @ 8.4A, 10V	380mOhm @ 6A, 10V
Vgs(th) (Max) @ Id	4V @ 250µA	4.5V @ 100µA
Gate Charge (Qg) (Max) @ Vgs	74 nC @ 10V	92 nC @ 10 V
Vgs (Max)	±30V	±30V
Input Capacitance (Ciss) (Max) @ Vds	2200 pF @ 25 V	2000 pF @ 25 V
Power Dissipation (Max)	190W (Tc)	150W (Tc)
Operating Temperature	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole	Through Hole
Supplier Device Package	TO-247AC	TO-247-3
Package / Case	TO-247-3	TO-247-3
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
Product Status	Active	Active

Engineering Selection Recommendations

Both the IRFP450LCPBF and STW14NK50Z are specified as active and are ROHS3 Compliant, with an MSL rating of 1 (Unlimited) and REACH Unaffected status. These certifications and statuses are essential for compliance-critical applications and support direct substitution where all provided parameters align.

Frequently Asked Questions (FAQ)

Q1: How are substitute MOSFETs for IRFP450LCPBF selected?
Substitute MOSFETs are selected by matching values for category, drain-source voltage, continuous drain current, gate-source threshold, Rds On, gate charge, input capacitance, package type, and compliance data.

Q2: Are the mounting and package types exactly the same between IRFP450LCPBF and STW14NK50Z?
Yes, both use a through-hole, TO-247-3 package, ensuring mechanical compatibility.

Q3: Does RoHS and REACH compliance status affect substitution?
Yes, both environmental and supply chain mandates require matched RoHS and REACH statuses for substitution to maintain compliance and procurement traceability.

Q4: Is there a difference in power dissipation between these parts?
Yes, the IRFP450LCPBF has a maximum power dissipation of 190W (Tc), whereas STW14NK50Z specifies 150W (Tc). All other key parameters remain within compatible ranges.

Q5: Is STW14NK50Z a manufacturer-recommended replacement for IRFP450LCPBF?
Yes, STW14NK50Z is listed as an MFR recommended substitute for IRFP450LCPBF within provided data.

Q6: What operating temperature ranges do these devices support?
Both devices are rated for -55°C ~ 150°C (TJ).

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