FQB630TM N-Channel MOSFET 200V 9A Equivalent & Substitute Parts

Part Overview

The FQB630TM is an N-Channel MOSFET manufactured by onsemi, rated for 200V drain-to-source voltage and 9A continuous drain current in a Surface Mount TO-263 (D2PAK) package. This device is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity. Equivalent parts must maintain electrical performance within the specified parameter ranges while accommodating the same or compatible package footprints.

Key Parameters

Parameter	FQB630TM
Drain-to-Source Voltage (Vdss)	200 V
Continuous Drain Current (Id) @ 25°C	9 A (Tc)
On-State Resistance (Rds On) @ Id, Vgs	400 mOhm @ 4.5A, 10V
Gate Threshold Voltage (Vgs(th)) @ Id	4 V @ 250 µA
Gate Charge (Qg) @ Vgs	25 nC @ 10 V
Input Capacitance (Ciss) @ Vds	550 pF @ 25 V
Power Dissipation (Max)	3.13 W (Ta), 78 W (Tc)
Operating Temperature Range	-55°C to 150°C (TJ)
Package Type	TO-263 (D2PAK)
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the FQB630TM is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Drain-to-Source Voltage (Vdss): Must equal or exceed 200 V
Continuous Drain Current (Id): Must equal or exceed 9 A at 25°C
Package Type: Must be compatible with TO-263 (D2PAK) footprint
Operating Temperature Range: Must support -55°C to 150°C minimum
FET Technology: N-Channel MOSFET (Metal Oxide)

Secondary Compatibility Parameters:

On-State Resistance (Rds On): Lower values indicate improved performance
Gate Charge (Qg): Lower values reduce switching losses
Input Capacitance (Ciss): Affects gate drive requirements
Gate Threshold Voltage (Vgs(th)): Must be compatible with drive circuitry

The substitute parts listed below meet or exceed the primary substitution criteria and maintain electrical compatibility within the specified parameter ranges.

Parameter Comparison

Parameter	FQB630TM (onsemi)	IRL630STRLPBF (Vishay)	RCJ120N20TL (Rohm)
Drain-to-Source Voltage (Vdss)	200 V	200 V	200 V
Continuous Drain Current (Id) @ 25°C	9 A (Tc)	9 A (Tc)	12 A (Tc)
On-State Resistance (Rds On)	400 mOhm @ 4.5A, 10V	400 mOhm @ 5.4A, 5V	325 mOhm @ 6A, 10V
Gate Threshold Voltage (Vgs(th)) @ Id	4 V @ 250 µA	2 V @ 250 µA	5.25 V @ 1 mA
Gate Charge (Qg) @ Vgs	25 nC @ 10 V	40 nC @ 10 V	15 nC @ 10 V
Input Capacitance (Ciss) @ Vds	550 pF @ 25 V	1100 pF @ 25 V	740 pF @ 25 V
Power Dissipation (Max)	3.13 W (Ta), 78 W (Tc)	3.1 W (Ta), 74 W (Tc)	1.56 W (Ta), 40 W (Tc)
Operating Temperature Range	-55°C to 150°C (TJ)	-55°C to 150°C (TJ)	-55°C to 150°C (TJ)
Package Type	TO-263 (D2PAK)	TO-263 (D2PAK)	TO-263 (D2PAK)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active

Engineering Selection Recommendations

IRL630STRLPBF (Vishay Siliconix)

The IRL630STRLPBF is an active product that provides direct electrical equivalence to the FQB630TM. Both devices share identical Vdss (200 V) and Id (9 A) ratings with equivalent Rds On specifications (400 mOhm). The IRL630STRLPBF is RoHS3 compliant and maintains the same TO-263 (D2PAK) package footprint. This part is suitable for direct replacement in applications where the FQB630TM is specified, with no circuit modifications required. The device is available in Tape & Reel packaging for production environments.

RCJ120N20TL (Rohm Semiconductor)

The RCJ120N20TL is an active product that exceeds the electrical specifications of the FQB630TM. It provides higher continuous drain current (12 A versus 9 A) and lower on-state resistance (325 mOhm versus 400 mOhm), resulting in improved thermal performance and reduced power dissipation. The RCJ120N20TL maintains the same 200 V Vdss rating and TO-263 (D2PAK) package compatibility. This part is suitable for applications requiring enhanced current handling or thermal margin. The device is RoHS3 compliant and available in Cut Tape and Digi-Reel packaging. Gate threshold voltage is higher (5.25 V) and gate charge is lower (15 nC), which may require evaluation in gate drive circuits designed for the original FQB630TM.

Frequently Asked Questions (FAQ)

Q: Can the IRL630STRLPBF be used as a direct replacement for the FQB630TM without circuit modifications?

A: Yes. The IRL630STRLPBF maintains identical Vdss (200 V), Id (9 A), and Rds On (400 mOhm) specifications. Both devices use the same TO-263 (D2PAK) package footprint. No circuit modifications are required for direct substitution.

Q: What are the advantages of using the RCJ120N20TL over the IRL630STRLPBF?

A: The RCJ120N20TL provides higher continuous drain current (12 A versus 9 A) and lower on-state resistance (325 mOhm versus 400 mOhm). These characteristics result in reduced power dissipation and improved thermal performance. The lower gate charge (15 nC versus 40 nC) also reduces switching losses.

Q: Are there any gate drive circuit considerations when substituting with the RCJ120N20TL?

A: The RCJ120N20TL has a higher gate threshold voltage (5.25 V @ 1 mA) compared to the FQB630TM (4 V @ 250 µA). Gate drive circuits must be evaluated to ensure adequate voltage margin for reliable switching. The lower gate charge may also affect switching speed characteristics.

Q: Do all three parts share the same package footprint?

A: Yes. The FQB630TM, IRL630STRLPBF, and RCJ120N20TL all use the TO-263 (D2PAK) package with identical pin configurations. PCB layout modifications are not required for substitution.

Q: What is the product status difference between the substitute parts?

A: The FQB630TM is classified as obsolete. Both the IRL630STRLPBF and RCJ120N20TL are active products with ongoing manufacturing and availability. Active product status ensures long-term supply chain reliability and continued technical support.

Q: Are the substitute parts RoHS compliant?

A: The IRL630STRLPBF is RoHS3 compliant. The RCJ120N20TL is RoHS3 compliant. Both parts meet current environmental and regulatory requirements for commercial and industrial applications.

Q: What is the operating temperature range for all three parts?

A: All three parts support an operating temperature range of -55°C to 150°C (TJ), ensuring compatibility across industrial and extended temperature applications.

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