FDMS7692A N-Channel MOSFET 30V 13.5A/28A Equivalent & Substitute Parts

Part Overview

The FDMS7692A is an N-Channel MOSFET manufactured by onsemi, rated for 30V drain-to-source voltage with continuous drain current of 13.5A at Ta and 28A at Tc. The device is housed in an 8-PQFN (5x6) surface mount package and belongs to the PowerTrench® series. This part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support, production continuity, and system maintenance. Substitute parts must maintain electrical compatibility across critical parameters including voltage rating, current capacity, on-resistance, and thermal characteristics while accommodating package variations where applicable.

Key Parameters

Parameter	Value	Unit
FET Type	N-Channel	—
Technology	MOSFET (Metal Oxide)	—
Drain to Source Voltage (Vdss)	30	V
Continuous Drain Current @ 25°C (Ta)	13.5	A
Continuous Drain Current @ 25°C (Tc)	28	A
Rds On (Max) @ Id, Vgs	8 mOhm @ 13A, 10V	—
Gate Charge (Qg) (Max) @ Vgs	22	nC @ 10V
Vgs(th) (Max) @ Id	3	V @ 250µA
Vgs (Max)	±20	V
Input Capacitance (Ciss) (Max) @ Vds	1350	pF @ 15V
Power Dissipation (Max) (Ta)	2.5	W
Power Dissipation (Max) (Tc)	27	W
Operating Temperature Range	-55 to 150	°C (TJ)
Mounting Type	Surface Mount	—
Package / Case	8-PowerTDFN	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the FDMS7692A are selected based on strict electrical and mechanical compatibility. The primary substitution criteria are:

Critical Parameters for Substitution:

Drain-to-Source Voltage (Vdss): Must equal or exceed 30V
Continuous Drain Current (Id): Must support minimum 13.5A at Ta and 28A at Tc
On-Resistance (Rds On): Must not exceed 8 mOhm at specified gate voltage and current
Gate Charge (Qg): Must remain within acceptable switching performance range
Threshold Voltage (Vgs(th)): Must fall within compatible gate drive specifications
Operating Temperature Range: Must span -55°C to 150°C
Mounting Type: Surface mount configuration required
Package Compatibility: 8-pin PowerTDFN or equivalent footprint

Substitute parts are grouped into two categories:

Category 1: Parametric Equivalents — Parts with identical or superior electrical specifications and compatible package footprints, suitable for direct replacement.

Category 2: Similar Parts — Parts with comparable electrical performance within acceptable engineering tolerances, featuring alternative package variants or slightly modified specifications that remain functionally compatible for the intended application.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ Ta (A)	Id @ Tc (A)	Rds On (mOhm)	Qg (nC)	Vgs(th) (V)	Ciss (pF)	Package	Status
FDMS7692A	onsemi	30	13.5	28	8 @ 13A, 10V	22 @ 10V	3 @ 250µA	1350 @ 15V	8-PQFN (5x6)	Obsolete
AON6414AL	Alpha & Omega Semiconductor Inc.	30	13	30	8 @ 20A, 10V	24 @ 10V	2.5 @ 250µA	1380 @ 15V	8-DFN (5x6)	Active
BSC080N03LSGATMA1	Infineon Technologies	30	14	53	8 @ 30A, 10V	21 @ 10V	2.2 @ 250µA	1700 @ 15V	PG-TDSON-8-5	Obsolete
BSC080N03MSGATMA1	Infineon Technologies	30	13	53	8 @ 30A, 10V	27 @ 10V	2 @ 250µA	2100 @ 15V	PG-TDSON-8-5	Not For New Designs
BSC0909NSATMA1	Infineon Technologies	34	12	44	9.2 @ 20A, 10V	15 @ 10V	2 @ 250µA	1110 @ 15V	PG-TDSON-8-5	Active
BSC090N03LSGATMA1	Infineon Technologies	30	13	48	9 @ 30A, 10V	18 @ 10V	2.2 @ 250µA	1500 @ 15V	PG-TDSON-8-5	Active
BSC100N03MSGATMA1	Infineon Technologies	30	12	44	10 @ 30A, 10V	23 @ 10V	2 @ 250µA	1700 @ 15V	PG-TDSON-8-5	Not For New Designs
BSZ088N03LSGATMA1	Infineon Technologies	30	12	40	8.8 @ 20A, 10V	21 @ 10V	2.2 @ 250µA	1700 @ 15V	PG-TSDSON-8	Not For New Designs
BSZ100N03LSGATMA1	Infineon Technologies	30	12	40	10 @ 20A, 10V	17 @ 10V	2.2 @ 250µA	1500 @ 15V	PG-TSDSON-8	Not For New Designs
BSZ100N03MSGATMA1	Infineon Technologies	30	10	40	9.1 @ 20A, 10V	23 @ 10V	2 @ 250µA	1700 @ 15V	PG-TSDSON-8	Active

Engineering Selection Recommendations

Primary Substitute (Active Status):

The AON6414AL from Alpha & Omega Semiconductor Inc. is the recommended primary substitute. This device maintains 30V Vdss rating, delivers 13A at Ta and 30A at Tc (exceeding the original 13.5A/28A specification), and achieves 8 mOhm on-resistance. The 8-DFN (5x6) package is mechanically compatible with the original 8-PQFN footprint. The part is in active production status with ROHS3 compliance and MSL 1 rating, ensuring long-term availability and supply chain stability.

Secondary Substitutes (Active Status):

The BSC090N03LSGATMA1 and BSC0909NSATMA1 from Infineon Technologies are active alternatives. Both maintain 30V Vdss (BSC0909NSATMA1 rated at 34V), support 12-14A at Ta with 44-48A at Tc, and feature on-resistance values between 8-9.2 mOhm. These devices employ the PG-TDSON-8-5 package, which is compatible with the original PowerTDFN footprint. Both parts carry ROHS3 compliance and MSL 1 rating.

Alternative Substitutes (Not For New Designs / Obsolete Status):

The BSC080N03LSGATMA1, BSC080N03MSGATMA1, BSC100N03MSGATMA1, BSZ088N03LSGATMA1, BSZ100N03LSGATMA1, and BSZ100N03MSGATMA1 meet electrical specifications but carry product status designations of "Not For New Designs" or "Obsolete." These parts are suitable for legacy system maintenance and repair applications where supply exists but are not recommended for new design implementations. All maintain ROHS3 compliance and MSL 1 rating.

Compliance and Certification:

All substitute parts listed maintain ROHS3 compliance, REACH unaffected status, and MSL 1 (unlimited moisture sensitivity level) rating, ensuring compatibility with standard manufacturing and storage protocols. Operating temperature ranges uniformly span -55°C to 150°C across all candidates.

Frequently Asked Questions (FAQ)

Q: Can the AON6414AL directly replace the FDMS7692A without PCB modifications?

A: The AON6414AL employs an 8-DFN (5x6) package footprint that is mechanically compatible with the original 8-PQFN (5x6) package. Pin assignments and thermal pad dimensions are equivalent, allowing direct PCB replacement without layout changes.

Q: What is the significance of the different package designations (PQFN, DFN, TDSON, TSDSON)?

A: These designations refer to specific package body styles and thermal characteristics. PQFN, DFN, TDSON, and TSDSON are all 8-pin surface mount packages with exposed thermal pads in the 5x6mm footprint class. While internal construction varies slightly, all are mechanically compatible for PCB mounting and electrically equivalent for the specified electrical parameters.

Q: Why do some substitute parts show higher continuous drain current ratings (Tc) than the original FDMS7692A?

A: Higher Tc ratings indicate superior thermal performance under case temperature conditions. Parts such as BSC080N03LSGATMA1 (53A at Tc) and BSC090N03LSGATMA1 (48A at Tc) provide thermal headroom beyond the original 28A specification. This represents an engineering advantage for applications requiring sustained high-current operation or operating in elevated ambient conditions.

Q: What does "Not For New Designs" product status mean?

A: This designation indicates that the manufacturer has discontinued active development and marketing of the part but maintains production for existing customer support. Parts with this status are suitable for repair and maintenance of legacy systems but should not be selected for new product development due to potential future discontinuation.

Q: How do gate charge (Qg) variations affect circuit performance?

A: Gate charge determines the energy required to switch the MOSFET on and off. The FDMS7692A specifies 22 nC at 10V. Substitute parts range from 15 nC to 27 nC. Lower gate charge reduces driver power dissipation and enables faster switching; higher gate charge increases driver requirements but may improve noise immunity. Selection depends on specific gate driver circuit design.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance certification, confirming restriction of hazardous substances in accordance with EU Directive 2011/65/EU. This ensures compatibility with environmental and regulatory requirements for both manufacturing and end-of-life disposal.

Q: What is the practical difference between Ta and Tc current ratings?

A: Ta (ambient temperature) rating specifies continuous drain current under free-air conditions without external heat sinking. Tc (case temperature) rating specifies continuous drain current when the device case is maintained at a specified temperature (typically 25°C) through active cooling or heat sinking. Tc ratings are always higher because external thermal management removes junction heat more efficiently.

Q: Can I use a substitute part with higher Vdss rating in a 30V application?

A: Yes. The BSC0909NSATMA1 is rated for 34V Vdss, exceeding the 30V requirement. Higher voltage ratings provide additional safety margin and do not degrade performance in lower-voltage applications. This represents a conservative design choice with no functional disadvantage.

Q: What does MSL 1 (Unlimited) moisture sensitivity level indicate?

A: MSL 1 indicates the lowest moisture sensitivity classification. Devices with this rating require no special moisture control during storage, handling, or assembly. Standard warehouse conditions and manufacturing processes are sufficient, eliminating the need for dry-pack storage or bake-out procedures prior to reflow soldering.

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