IRL640L N-Channel MOSFET 200V 17A Equivalent & Substitute Parts

Part Overview

The IRL640L is an N-Channel MOSFET manufactured by Vishay Siliconix, rated for 200V drain-to-source voltage and 17A continuous drain current at 25°C. The device is packaged in TO-262-3 (I2PAK) configuration for through-hole mounting applications. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production, maintenance, and new design implementations. The IRL640L operates across a temperature range of -55°C to 150°C and is RoHS non-compliant.

Key Parameters

Parameter	Value	Unit
FET Type	N-Channel	—
Drain to Source Voltage (Vdss)	200	V
Continuous Drain Current (Id) @ 25°C	17	A
Rds On (Max) @ Id, Vgs	180 mOhm @ 10A, 5V	—
Gate Threshold Voltage Vgs(th) (Max)	2	V @ 250µA
Gate Charge (Qg) (Max) @ Vgs	66	nC @ 5V
Input Capacitance (Ciss) (Max) @ Vds	1800	pF @ 25V
Operating Temperature Range	-55 to 150	°C (TJ)
Mounting Type	Through Hole	—
Package	TO-262-3	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the IRL640L is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

Drain-to-Source Voltage (Vdss): Must equal or exceed 200V
Continuous Drain Current (Id): Must equal or exceed 17A at 25°C
Gate Threshold Voltage (Vgs(th)): Must be compatible with 5V drive circuits
On-State Resistance (Rds On): Lower values indicate improved performance; values at or below 180 mOhm @ specified conditions are acceptable
Gate Charge (Qg): Lower values reduce switching losses
Input Capacitance (Ciss): Lower values improve switching speed

Mechanical Compatibility Criteria:

Mounting Type: Through-hole configuration required
Package Type: TO-262-3, TO-220-3, or TO-220AB packages are mechanically compatible with standard PCB layouts

Compliance Considerations:

RoHS Status: Substitute parts with ROHS3 compliance are preferred for new designs
Product Status: Active or Obsolete status affects long-term availability

The substitute parts listed below meet or exceed the electrical requirements of the IRL640L while offering improved specifications, enhanced compliance, or superior availability.

Parameter Comparison

Parameter	IRL640L (Main)	FDP18N20F	IRF200B211	IRF640NPBF	IRL640A	STP19NF20
Manufacturer	Vishay Siliconix	onsemi	Infineon Technologies	Infineon Technologies	onsemi	STMicroelectronics
FET Type	N-Channel	N-Channel	N-Channel	N-Channel	N-Channel	N-Channel
Vdss (V)	200	200	200	200	200	200
Id @ 25°C (A)	17	18	12	18	18	15
Rds On (Max) (mOhm)	180 @ 10A, 5V	145 @ 9A, 10V	170 @ 7.2A, 10V	150 @ 11A, 10V	180 @ 9A, 5V	160 @ 7.5A, 10V
Vgs(th) (Max) (V)	2 @ 250µA	5 @ 250µA	4.9 @ 50µA	4 @ 250µA	2 @ 250µA	4 @ 250µA
Qg (Max) (nC)	66 @ 5V	26 @ 10V	23 @ 10V	67 @ 10V	56 @ 5V	24 @ 10V
Ciss (Max) (pF)	1800 @ 25V	1180 @ 25V	790 @ 50V	1160 @ 25V	1705 @ 25V	800 @ 25V
Operating Temperature (°C)	-55 to 150	-55 to 150	-55 to 175	-55 to 175	-55 to 150	-55 to 150
Package	TO-262-3	TO-220-3	TO-220AB	TO-220AB	TO-220-3	TO-220
Power Dissipation (W)	Not specified	100	80	150	110	90
Product Status	Obsolete	Obsolete	Active	Not For New Designs	Obsolete	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Active Production and New Designs:

IRF640NPBF and STP19NF20 are the primary candidates for new designs. IRF640NPBF delivers 18A continuous drain current with 150 mOhm on-state resistance, exceeding the IRL640L performance envelope. STP19NF20 provides 15A continuous drain current with 160 mOhm on-state resistance and is classified as Active product status, ensuring long-term availability. Both devices are ROHS3 compliant and operate across -55°C to 150°C or higher temperature ranges.

For Maintenance and Repair of Existing Systems:

IRL640A serves as a direct functional equivalent, offering 18A continuous drain current in TO-220-3 packaging with ROHS3 compliance. This part maintains electrical compatibility with the original IRL640L while providing improved regulatory compliance.

For Current-Limited Applications:

IRF200B211 is suitable for applications where 12A continuous drain current is sufficient. This Infineon HEXFET device operates to 175°C and carries Active product status, supporting long-term system maintenance.

Package Considerations:

The IRL640L uses TO-262-3 (I2PAK) packaging. Substitute parts employ TO-220-3 or TO-220AB packages, which require PCB layout modification. TO-220 packages have larger footprints and different lead spacing compared to TO-262-3. Thermal management characteristics differ between package types; TO-220 packages typically provide lower thermal resistance than TO-262-3 in equivalent mounting configurations.

Compliance and Availability:

All substitute parts listed are ROHS3 compliant, supporting regulatory requirements for new product designs. IRF640NPBF and STP19NF20 carry Active product status, ensuring continued manufacturing and supply chain availability. FDP18N20F and IRL640A are classified as Obsolete but remain in stock with substantial inventory levels.

Frequently Asked Questions (FAQ)

Q: Can the IRL640L be directly replaced with a TO-220 package substitute without PCB modification?

A: No. The IRL640L uses TO-262-3 (I2PAK) packaging, while substitute parts use TO-220-3 or TO-220AB packages. These packages have different lead configurations, spacing, and mounting hole patterns. PCB layout modification is required for mechanical compatibility.

Q: What is the minimum drain current rating required for a substitute part?

A: The substitute part must support a continuous drain current (Id) of at least 17A at 25°C to meet or exceed the IRL640L specification. IRF640NPBF (18A), FDP18N20F (18A), IRL640A (18A), and STP19NF20 (15A) all meet this requirement. IRF200B211 (12A) falls below this threshold and is suitable only for applications with reduced current demands.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed carry ROHS3 compliance. The original IRL640L is RoHS non-compliant. Substitution with ROHS3-compliant parts is required for new product designs subject to RoHS regulations.

Q: What is the significance of gate threshold voltage (Vgs(th)) differences between parts?

A: Gate threshold voltage determines the gate-source voltage required to initiate conduction. The IRL640L specifies 2V maximum at 250µA, enabling operation with lower gate drive voltages. Substitute parts with higher Vgs(th) values (4V to 5V) require higher gate drive voltages. Circuit design must accommodate these differences to ensure proper switching performance.

Q: Which substitute part offers the best on-state resistance performance?

A: IRF640NPBF provides the lowest on-state resistance at 150 mOhm (@ 11A, 10V), followed by FDP18N20F at 145 mOhm (@ 9A, 10V). Lower on-state resistance reduces power dissipation and heat generation during operation. Comparison must account for the different measurement conditions specified by each manufacturer.

Q: Can the IRL640L be used in applications requiring operation above 150°C?

A: No. The IRL640L maximum operating temperature is 150°C (TJ). For applications requiring higher temperature operation, IRF640NPBF and IRF200B211 support operation to 175°C. Application thermal analysis must confirm that junction temperature remains within device specifications.

Q: What is the impact of gate charge (Qg) differences on circuit performance?

A: Gate charge determines the energy required to switch the MOSFET on and off. Lower gate charge values reduce switching losses and enable faster switching speeds. IRF200B211 and STP19NF20 exhibit significantly lower gate charge (23-24 nC) compared to the IRL640L (66 nC), resulting in improved switching efficiency and reduced electromagnetic interference in high-frequency applications.

Q: Are substitute parts available in the same TO-262-3 package?

A: No. None of the substitute parts are available in TO-262-3 packaging. All substitutes use TO-220-3 or TO-220AB packages. If TO-262-3 packaging is mandatory for mechanical or thermal reasons, alternative sourcing strategies or custom packaging solutions must be evaluated.

Q: What is the product status significance for long-term supply planning?

A: Product status indicates manufacturing and supply availability. Active status (STP19NF20, IRF200B211) ensures continued production and supply chain support. Obsolete status (IRL640L, FDP18N20F, IRL640A) indicates discontinued manufacturing; existing inventory may be available but future supply is not guaranteed. Not For New Designs status (IRF640NPBF) indicates the part is available but not recommended for new product development.

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