FDMS86300 N-Channel MOSFET 80V 19A/80A Equivalent & Substitute Parts

Part Overview

The FDMS86300 is an N-Channel MOSFET manufactured by onsemi, rated for 80V drain-to-source voltage with continuous drain current of 19A at Ta (ambient temperature) and 80A at Tc (case temperature). This device is housed in an 8-PQFN (5x6) surface mount package and is part of the PowerTrench® series. The part is currently in active production status with RoHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or when specific performance characteristics of substitute devices provide enhanced capabilities within the same voltage and package class specifications.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	80	V
Continuous Drain Current @ 25°C (Ta)	19	A
Continuous Drain Current @ 25°C (Tc)	80	A
RDS(on) Max @ 19A, 10V	3.9	mOhm
Gate Threshold Voltage (Vgs(th)) Max @ 250µA	4.5	V
Gate Charge (Qg) Max @ 10V	86	nC
Input Capacitance (Ciss) Max @ 40V	7082	pF
Power Dissipation Max (Ta)	2.5	W
Power Dissipation Max (Tc)	104	W
Operating Temperature Range	-55 to 150	°C
Package Type	8-PQFN (5x6)	Surface Mount
FET Type	N-Channel	-
Technology	MOSFET (Metal Oxide)	-

Substitute Part Grouping Explanation

Substitute parts for the FDMS86300 are qualified based on the following critical parameters that determine functional equivalence:

Voltage Class Compatibility: All substitute parts maintain the same 80V drain-to-source voltage (Vdss) rating, ensuring compatibility in circuits designed for this voltage specification.

N-Channel Technology: All substitutes are N-Channel MOSFETs using metal oxide semiconductor technology, maintaining identical switching polarity and gate drive requirements.

Surface Mount Packaging: All substitute parts are surface mount devices in 5x6mm footprint packages (8-PQFN, 8-DFN, or PowerFlat™), ensuring mechanical compatibility with PCB layouts designed for the FDMS86300.

Gate Drive Voltage: All parts operate with maximum gate-source voltage (Vgs Max) of ±20V and threshold voltage specifications within the 3.3V to 4.5V range, ensuring compatibility with standard gate drive circuits.

Operating Temperature Range: All substitutes support the -55°C to 150°C operating range (with STL130N8F7 extending to 175°C), maintaining thermal performance requirements.

Regulatory Compliance: All substitute parts carry RoHS3 compliance, REACH unaffected status, and MSL 1 rating, meeting the same environmental and handling standards as the primary part.

The substitutes differ in continuous drain current ratings and power dissipation capabilities, allowing selection based on specific application thermal and current requirements.

Parameter Comparison

Parameter	FDMS86300 (onsemi)	AON6278 (Alpha & Omega)	STL130N8F7 (STMicroelectronics)	Unit
Drain-to-Source Voltage (Vdss)	80	80	80	V
Continuous Drain Current @ Ta	19	34	-	A
Continuous Drain Current @ Tc	80	85	130	A
RDS(on) Max @ 10V	3.9 @ 19A	3.3 @ 20A	3.6 @ 13A	mOhm
Gate Threshold Voltage (Vgs(th)) Max	4.5	3.3	4.5	V
Gate Charge (Qg) Max @ 10V	86	86	96	nC
Input Capacitance (Ciss) Max @ 40V	7082	4646	6340	pF
Power Dissipation Max @ Tc	104	208	135	W
Operating Temperature Range	-55 to 150	-55 to 150	-55 to 175	°C
FET Type	N-Channel	N-Channel	N-Channel	-
Technology	MOSFET (Metal Oxide)	MOSFET (Metal Oxide)	MOSFET (Metal Oxide)	-
Vgs (Max)	±20	±20	±20	V
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	-
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	-
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	-

Engineering Selection Recommendations

FDMS86300 (onsemi PowerTrench®): Select this part as the primary choice when the design is qualified for onsemi components and inventory availability is confirmed. The part is in active production status with established supply chain presence. RoHS3 compliance and MSL 1 rating support standard manufacturing processes without special handling requirements.

AON6278 (Alpha & Omega Semiconductor): This substitute provides higher continuous drain current (34A at Ta, 85A at Tc) and superior power dissipation capability (208W at Tc) compared to the FDMS86300. The lower gate threshold voltage (3.3V) and reduced input capacitance (4646 pF) may provide faster switching characteristics in gate drive circuits. Select this part when higher current capacity or thermal performance is required within the same voltage class. Active production status and RoHS3 compliance ensure supply reliability and regulatory conformance.

STL130N8F7 (STMicroelectronics DeepGATE™/STripFET™ VII): This substitute offers the highest continuous drain current (130A at Tc) and power dissipation (135W at Tc) among the three options, with extended operating temperature range to 175°C. The slightly higher gate charge (96 nC) represents a minor trade-off for significantly enhanced current handling. Select this part for applications requiring maximum current capacity or operation in elevated temperature environments. Active production status and RoHS3 compliance confirm regulatory alignment.

All three parts maintain identical voltage class (80V), N-Channel technology, surface mount packaging compatibility, and regulatory compliance status. Selection between substitutes depends on specific application requirements for continuous current, power dissipation, and operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can the AON6278 be used as a direct replacement for the FDMS86300 in existing PCB designs?

A: Yes, the AON6278 is mechanically compatible with the FDMS86300 in PCB layouts designed for 8-pin surface mount packages with 5x6mm footprints. Both devices use identical gate drive voltage specifications (±20V maximum) and threshold voltage ranges compatible with standard gate drive circuits. The AON6278 provides higher current and power dissipation ratings, making it suitable for applications where the FDMS86300 may be thermally limited.

Q: What are the key differences in electrical performance between these three parts?

A: The primary differences are continuous drain current and power dissipation ratings. The FDMS86300 provides 19A at Ta and 80A at Tc. The AON6278 increases these to 34A at Ta and 85A at Tc with 208W power dissipation. The STL130N8F7 delivers the highest performance with 130A at Tc and 135W power dissipation. Gate charge values are similar (86-96 nC), and all three maintain 80V voltage ratings. Input capacitance varies slightly (4646-7082 pF), which may affect gate drive circuit design.

Q: Are there package compatibility concerns when substituting these parts?

A: All three parts use 5x6mm surface mount packages (8-PQFN, 8-DFN, or PowerFlat™). While the footprints are mechanically similar, the specific package designations differ. Verify that the PCB layout accommodates the substitute part's exact package type. The FDMS86300 uses 8-PQFN, AON6278 uses 8-DFN with flat leads, and STL130N8F7 uses PowerFlat™. Consult the respective datasheets for precise pin configuration and thermal pad dimensions.

Q: Do all three parts meet the same regulatory and compliance standards?

A: Yes, all three parts are RoHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited moisture sensitivity level) ratings. This ensures compatibility with standard manufacturing processes and environmental regulations. No special handling or storage procedures are required for any of these parts.

Q: Which substitute should be selected for thermal management considerations?

A: The STL130N8F7 provides the highest power dissipation capability (135W at Tc) and extended operating temperature range (-55°C to 175°C), making it the optimal choice for thermally demanding applications. The AON6278 offers intermediate thermal performance (208W at Tc) with standard temperature range (-55°C to 150°C). The FDMS86300 is suitable for applications with moderate thermal requirements (104W at Tc).

Q: Are gate drive circuits compatible across all three parts?

A: Yes, all three parts share identical maximum gate-source voltage specifications (±20V) and compatible threshold voltage ranges (3.3-4.5V). Gate drive circuits designed for the FDMS86300 will function with the substitutes. Minor differences in gate charge (86-96 nC) and input capacitance (4646-7082 pF) may affect switching speed and gate drive current requirements, but standard gate drive designs accommodate these variations.

Q: What inventory considerations apply to these substitute parts?

A: The FDMS86300 has 53,100 pieces in stock, providing strong availability. The AON6278 has 15,850 pieces available, and the STL130N8F7 has 2,463 pieces in stock. Inventory levels should be considered when planning production schedules and supply chain strategies.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message