FQD30N06LTM N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The FQD30N06LTM is an N-Channel MOSFET manufactured by onsemi, rated for 60V drain-to-source voltage with 24A continuous drain current in a surface mount DPAK package. This device is classified as Obsolete, making equivalent and substitute parts necessary for ongoing production and design requirements. The part operates across a wide temperature range from -55°C to 150°C and is suitable for applications requiring moderate power dissipation in compact form factors.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	60	V
Continuous Drain Current (Id) @ 25°C	24	A
On-Resistance (Rds On) @ 12A, 10V	39	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	2.5	V
Gate Charge (Qg) @ 5V	20	nC
Input Capacitance (Ciss) @ 25V	1040	pF
Power Dissipation (Max) @ Tc	44	W
Operating Temperature Range	-55 to 150	°C
Package Type	TO-252-3 (DPAK)	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution of the FQD30N06LTM is determined by the following critical parameters:

Primary Matching Criteria:

Drain-to-Source Voltage (Vdss): 60V minimum
Continuous Drain Current (Id): 24A or greater
Package Type: TO-252-3 (DPAK) surface mount
On-Resistance (Rds On): Comparable performance at rated current and gate voltage
Gate Threshold Voltage (Vgs(th)): Within acceptable operating range
Operating Temperature: Minimum -55°C to 150°C

Substitution Logic: Parts are grouped into three categories based on their electrical compatibility with the FQD30N06LTM:

Direct Equivalents: Parts matching all primary criteria with identical or superior electrical performance
Functional Equivalents: Parts meeting voltage and current requirements with minor parameter variations
Conditional Substitutes: Parts requiring application-level verification due to parameter deviations

The FQD30N06LTM's Obsolete status necessitates substitution with Active or Not For New Designs status parts. All substitute candidates maintain the same package footprint and mounting technology to ensure mechanical compatibility.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On @ 10V (mOhm)	Vgs(th) @ 250µA (V)	Qg @ 5V/10V (nC)	Ciss @ 25V/30V (pF)	Pd Max (W)	Tj Range (°C)	Status
FQD30N06LTM	onsemi	60	24	39 @ 12A	2.5	20 @ 5V	1040 @ 25V	44	-55 to 150	Obsolete
NTD5867NLT4G	onsemi	60	20	39 @ 10A	2.5	15 @ 10V	675 @ 25V	36	-55 to 150	Obsolete
SVD5867NLT4G	onsemi	60	22	39 @ 11A	2.5	15 @ 10V	675 @ 25V	43	-55 to 175	Not For New Designs
IPD350N06LGBTMA1	Infineon Technologies	60	29	35 @ 29A	2.0	13 @ 5V	800 @ 30V	68	-55 to 175	Active
IRLR3105TRPBF	Infineon Technologies	55	25	37 @ 15A	3.0	20 @ 5V	710 @ 25V	57	-55 to 175	Active
STD16NF06LT4	STMicroelectronics	60	24	70 @ 8A	1.0	7.5 @ 5V	370 @ 25V	40	-55 to 175	Active
STD16NF06T4	STMicroelectronics	60	16	70 @ 8A	2.0	14.1 @ 10V	400 @ 15V	40	-55 to 175	Active
STD20NF06LAG	STMicroelectronics	60	24	40 @ 12A	2.5	13 @ 5V	660 @ 25V	60	-55 to 175	Active
STD20NF06LT4	STMicroelectronics	60	24	40 @ 12A	2.5	13 @ 10V	660 @ 25V	60	-55 to 175	Active
STD20NF06T4	STMicroelectronics	60	24	40 @ 12A	4.0	31 @ 10V	690 @ 25V	60	-55 to 175	Active
ZXMN6A09KTC	Diodes Incorporated	60	7.7	40 @ 7.3A	3.0	29 @ 10V	1426 @ 30V	2.15	-55 to 150	Discontinued

Engineering Selection Recommendations

Tier 1 - Recommended Direct Substitutes (Active Status):

STD20NF06LAG and STD20NF06LT4 (STMicroelectronics) are the primary recommended substitutes. Both parts match the FQD30N06LTM in voltage rating (60V), current rating (24A), and on-resistance (40mOhm @ 12A, 10V). These devices are Active status with RoHS3 compliance and AEC-Q101 automotive qualification (STD20NF06LAG). The extended operating temperature range (-55°C to 175°C) provides superior thermal performance compared to the original part. Both parts are available in high inventory quantities and maintain identical TO-252-3 DPAK packaging.

Tier 2 - Alternative Substitutes (Active Status):

IPD350N06LGBTMA1 (Infineon Technologies OptiMOS™ series) offers superior electrical performance with 29A continuous drain current and lower on-resistance (35mOhm @ 29A, 10V). This part provides higher power dissipation capability (68W @ Tc) and is Active status with RoHS3 compliance. The extended temperature range (-55°C to 175°C) and lower gate charge (13nC @ 5V) reduce switching losses. This substitute is suitable for applications requiring enhanced thermal headroom or higher current capacity.

IRLR3105TRPBF (Infineon Technologies HEXFET® series) provides 25A continuous drain current with comparable on-resistance (37mOhm @ 15A, 10V). This part is Active status with RoHS3 compliance and extended temperature range (-55°C to 175°C). The Vdss rating of 55V is 5V lower than the original part; this substitute is suitable only for applications with maximum operating voltage below 55V.

Tier 3 - Conditional Substitutes:

STD16NF06LT4 (STMicroelectronics) matches the 60V voltage rating and 24A current rating but exhibits higher on-resistance (70mOhm @ 8A, 10V) and significantly lower gate charge (7.5nC @ 5V). This part is suitable for applications where reduced switching losses are prioritized over conduction losses. Active status with RoHS3 compliance and extended temperature range (-55°C to 175°C).

STD16NF06T4 (STMicroelectronics) is not recommended as a direct substitute due to reduced continuous drain current (16A), which falls below the FQD30N06LTM specification.

Not Recommended:

NTD5867NLT4G and SVD5867NLT4G (onsemi) are Obsolete and Not For New Designs status respectively, providing no advantage over the original part for new designs.

ZXMN6A09KTC (Diodes Incorporated) is Discontinued at DiGi Electronics and provides only 7.7A continuous drain current, insufficient for applications requiring 24A operation.

Frequently Asked Questions (FAQ)

Q: Can STD20NF06LAG directly replace FQD30N06LTM without circuit modifications?

A: Yes. STD20NF06LAG matches the FQD30N06LTM in voltage rating (60V), continuous drain current (24A), on-resistance (40mOhm @ 12A, 10V), and gate threshold voltage (2.5V @ 250µA). The TO-252-3 DPAK package is identical. The extended operating temperature range (-55°C to 175°C) provides additional margin. No circuit modifications are required.

Q: What is the difference between STD20NF06LAG and STD20NF06LT4?

A: Both parts are electrically identical with matching voltage, current, on-resistance, and threshold voltage specifications. STD20NF06LAG includes AEC-Q101 automotive qualification and is designated for automotive applications. STD20NF06LT4 is the industrial-grade equivalent. Selection depends on application requirements and qualification standards.

Q: Why is IPD350N06LGBTMA1 listed as an alternative if it has higher current rating?

A: IPD350N06LGBTMA1 provides 29A continuous drain current versus 24A for the FQD30N06LTM. This higher rating does not prevent substitution; it provides additional design margin and thermal headroom. The part is suitable for applications where the original 24A specification is adequate. The lower on-resistance (35mOhm @ 29A, 10V) reduces conduction losses. Selection depends on whether the application benefits from enhanced performance or requires exact current matching.

Q: Can IRLR3105TRPBF be used in all applications designed for FQD30N06LTM?

A: IRLR3105TRPBF has a Vdss rating of 55V, which is 5V lower than the FQD30N06LTM's 60V rating. This substitute is suitable only for applications where the maximum operating voltage does not exceed 55V. For applications requiring the full 60V rating, this part is not appropriate.

Q: What is the significance of the Obsolete status for FQD30N06LTM?

A: Obsolete status indicates the manufacturer has discontinued production and support for this part. Existing inventory may be available, but long-term supply is not guaranteed. Substitution with Active status parts (such as STD20NF06LAG or STD20NF06LT4) ensures continued availability and manufacturer support for future production runs.

Q: Are all substitute parts RoHS3 compliant?

A: All recommended substitute parts (STD20NF06LAG, STD20NF06LT4, IPD350N06LGBTMA1, IRLR3105TRPBF, STD16NF06LT4) are RoHS3 compliant. The original FQD30N06LTM does not specify RoHS status. Substitution with RoHS3 compliant parts ensures compliance with environmental regulations for new designs.

Q: Does package compatibility require any PCB layout changes?

A: All recommended substitute parts use the TO-252-3 DPAK package, which is mechanically and electrically identical to the FQD30N06LTM. No PCB layout modifications are required. Pin assignments and thermal pad dimensions are consistent across all substitutes.

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

A: Gate charge (Qg) affects switching speed and driver power requirements. The FQD30N06LTM has 20nC @ 5V gate charge. STD20NF06LAG and STD20NF06LT4 have 13nC @ 10V, reducing switching losses. IPD350N06LGBTMA1 has 13nC @ 5V, providing the lowest switching losses. Lower gate charge reduces driver stress and improves efficiency in high-frequency switching applications. Higher gate charge (such as STD20NF06T4 with 31nC @ 10V) increases driver requirements but may provide improved noise immunity.

Q: Can STD16NF06LT4 be used in high-current applications?

A: STD16NF06LT4 is not recommended for applications requiring the full 24A continuous drain current of the FQD30N06LTM. This part is rated for 24A but exhibits higher on-resistance (70mOhm @ 8A, 10V) compared to the original part (39mOhm @ 12A, 10V). Selection of STD16NF06LT4 is appropriate only for applications where reduced switching losses are prioritized and continuous current requirements do not exceed 16A under normal operating conditions.

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