FDMS86369-F085 Equivalent & Substitute Parts

Part Overview

The FDMS86369-F085 is an N-Channel 80V 65A Power56 MOSFET manufactured by onsemi, designed for surface mount applications in automotive-grade power conversion circuits. This device operates across a temperature range of -55°C to 175°C and is qualified to AEC-Q101 automotive standards with RoHS3 compliance.

The FDMS86369-F085 carries an Obsolete product status. Identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this component.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	80	V
Continuous Drain Current (Id) @ 25°C	65	A (Tc)
On-Resistance (Rds On) @ 65A, 10V	7.5	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	4	V
Gate Charge (Qg) @ 10V	46	nC
Input Capacitance (Ciss) @ 40V	2470	pF
Power Dissipation (Max)	107	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	8-PowerVDFN
Qualification	AEC-Q101

Substitute Part Grouping Explanation

Substitution of the FDMS86369-F085 is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Drain to Source Voltage (Vdss): 80V minimum
Continuous Drain Current (Id): 65A minimum at Tc
On-Resistance (Rds On): 7.5mOhm maximum at rated current and gate voltage
Gate Threshold Voltage (Vgs(th)): Compatible with 10V drive voltage
Package Type: Surface mount 8-pin power package
Operating Temperature: Support for -55°C to 175°C range
Automotive Grade: AEC-Q101 qualification preferred

Direct Equivalent: FDWS86369-F085 (onsemi) is a direct functional equivalent with identical electrical specifications and Active product status, differing only in power dissipation measurement reference (Tj vs. Tc).

Similar Substitutes: Infineon Technologies BSC and BSZ series devices and Texas Instruments CSD19531Q5AT provide functional substitution with higher voltage ratings (100V) and comparable or superior current handling, on-resistance, and thermal performance. These devices operate within compatible gate drive voltage ranges and temperature specifications.

Parameter Comparison

Parameter	FDMS86369-F085	FDWS86369-F085	BSC060N10NS3GATMA1	BSC070N10NS3GATMA1	BSC070N10NS5ATMA1	BSZ075N08NS5ATMA1	CSD19531Q5AT
Manufacturer	onsemi	onsemi	Infineon	Infineon	Infineon	Infineon	Texas Instruments
Vdss (V)	80	80	100	100	100	80	100
Id @ 25°C (A)	65 (Tc)	65 (Tc)	90 (Tc)	90 (Tc)	80 (Tc)	40 (Tc)	100 (Ta)
Rds On @ 10V (mOhm)	7.5 @ 65A	7.5 @ 65A	6 @ 50A	7 @ 50A	7 @ 40A	7.5 @ 20A	6.4 @ 16A
Vgs(th) (V)	4 @ 250µA	4 @ 250µA	3.5 @ 90µA	3.5 @ 75µA	3.8 @ 50µA	3.8 @ 36µA	3.3 @ 250µA
Qg @ 10V (nC)	46	46	68	55	38	29.5	48
Ciss @ Vds (pF)	2470 @ 40V	2470 @ 40V	4900 @ 50V	4000 @ 50V	2700 @ 50V	2080 @ 40V	3870 @ 50V
Power Dissipation (W)	107 (Tc)	107 (Tj)	125 (Tc)	114 (Tc)	83 (Tc)	69 (Tc)	125 (Tc)
Operating Temp (°C)	-55 to 175	-55 to 175	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150
Package	8-PowerVDFN	8-PowerVDFN	8-PowerTDFN	8-PowerTDFN	8-PowerTDFN	8-PowerTDFN	8-PowerTDFN
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
AEC-Q101	Yes	Yes	No	No	No	No	No

Engineering Selection Recommendations

Direct Replacement (Recommended for Automotive Applications):

FDWS86369-F085 is the primary substitute for FDMS86369-F085. Both devices are manufactured by onsemi, share identical electrical specifications, and maintain AEC-Q101 automotive qualification. FDWS86369-F085 carries Active product status with significantly higher inventory availability (7300 units vs. 831 units). This part is suitable for direct substitution in existing designs without circuit modification.

Alternative Substitutes (Requires Design Evaluation):

Infineon Technologies BSC070N10NS5ATMA1 and BSC070N10NS3GATMA1 provide functional substitution with higher voltage ratings (100V vs. 80V) and comparable current handling. These devices are Active products with robust inventory levels. However, they do not carry AEC-Q101 qualification and operate to a maximum temperature of 150°C, which is below the FDMS86369-F085 specification of 175°C. Applications requiring the full automotive qualification and extended temperature range should prioritize FDWS86369-F085.

Texas Instruments CSD19531Q5AT offers superior current capability (100A) and lower on-resistance characteristics. This device is suitable for applications requiring enhanced thermal performance or higher current margins. CSD19531Q5AT carries Active status but does not hold AEC-Q101 qualification and has REACH Affected status, requiring compliance verification for specific applications.

Infineon Technologies BSZ075N08NS5ATMA1 is suitable only for applications with reduced current requirements (40A continuous vs. 65A). This device is not recommended as a primary substitute due to insufficient current rating.

Frequently Asked Questions (FAQ)

Q: Can FDWS86369-F085 be used as a direct replacement for FDMS86369-F085?

A: Yes. FDWS86369-F085 is a direct functional equivalent with identical electrical specifications, the same 8-PowerVDFN package, and AEC-Q101 automotive qualification. The only difference is the power dissipation measurement reference (Tj vs. Tc). No circuit modifications are required.

Q: What is the primary reason to substitute FDMS86369-F085?

A: FDMS86369-F085 carries Obsolete product status. FDWS86369-F085 is the recommended substitute, offering the same performance with Active product status and superior supply availability.

Q: Can Infineon BSC070N10NS5ATMA1 replace FDMS86369-F085 in automotive applications?

A: BSC070N10NS5ATMA1 provides functional substitution for non-critical applications. However, it does not carry AEC-Q101 automotive qualification and operates to a maximum temperature of 150°C, below the FDMS86369-F085 specification of 175°C. Applications requiring full automotive compliance should use FDWS86369-F085.

Q: Are there package compatibility considerations when substituting these devices?

A: All substitute parts use 8-pin surface mount power packages (8-PowerVDFN or 8-PowerTDFN). While pin configurations are compatible, PCB layout and thermal management characteristics may differ. Verify thermal pad dimensions and mounting requirements for your specific application.

Q: What is the minimum continuous drain current rating required for substitution?

A: The substitute part must support a minimum continuous drain current of 65A at 25°C (Tc). BSZ075N08NS5ATMA1, rated at 40A, does not meet this requirement and is not suitable as a primary substitute.

Q: How does on-resistance affect device selection?

A: On-resistance directly impacts power dissipation and thermal performance. FDMS86369-F085 specifies 7.5mOhm at 65A and 10V gate voltage. Substitute parts with equal or lower on-resistance at comparable current levels provide equivalent or improved performance. BSC070N10NS5ATMA1 (7mOhm @ 40A, 10V) and CSD19531Q5AT (6.4mOhm @ 16A, 10V) both meet or exceed this specification.

Q: What gate drive voltage is required for these devices?

A: All listed devices operate with a maximum gate drive voltage of ±20V and are compatible with 10V drive circuits. Gate threshold voltages range from 3.3V to 4V, ensuring reliable switching with standard gate driver circuits.

Q: Is temperature range a critical substitution factor?

A: Yes. FDMS86369-F085 operates from -55°C to 175°C (TJ). Infineon and Texas Instruments alternatives operate to 150°C maximum. Applications requiring operation above 150°C must use FDWS86369-F085 to maintain specification compliance.

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