FDMS8020 N-Channel MOSFET 30V 26A/42A Equivalent & Substitute Parts

Part Overview

The FDMS8020 is an N-Channel MOSFET manufactured by onsemi, rated for 30V drain-to-source voltage with continuous drain current of 26A at Ta and 42A at Tc. The device is housed in an 8-PQFN (5x6) surface mount package and is part of the PowerTrench® series. The FDMS8020 is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity. Active alternatives with comparable electrical characteristics and package compatibility are available from multiple manufacturers including Infineon Technologies, Texas Instruments, Renesas Electronics Corporation, and Rohm Semiconductor.

Substiute Parts

FDMS8020

onsemiIn Stock: 15481FDMS8020 Datasheet

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BSC0901NSATMA1

Infineon TechnologiesIn Stock: 110149BSC0901NSATMA1 Datasheet

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BSZ0901NSIATMA1

Infineon TechnologiesIn Stock: 6200BSZ0901NSIATMA1 Datasheet

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CSD17575Q3T

Texas InstrumentsIn Stock: 3217CSD17575Q3T Datasheet

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CSD17576Q5B

Texas InstrumentsIn Stock: 9596CSD17576Q5B Datasheet

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CSD17576Q5BT

Texas InstrumentsIn Stock: 1317CSD17576Q5BT Datasheet

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RJK0346DPA-01#J0B

Renesas Electronics CorporationIn Stock: 3413RJK0346DPA-01#J0B Datasheet

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RS1E280GNTB

Rohm SemiconductorIn Stock: 2048RS1E280GNTB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the FDMS8020 is determined by strict alignment of electrical and mechanical parameters within the N-Channel MOSFET category. The following criteria establish substitution validity:

Primary Substitution Criteria:

• Drain-to-Source Voltage (Vdss): Must equal or exceed 30V
• Continuous Drain Current (Id @ Ta): Must meet or exceed 26A at 25°C
• RDS(on) Max: Must not exceed 2.5 mOhm at specified Id and Vgs conditions
• Gate Threshold Voltage (Vgs(th)): Must be compatible within ±20V maximum gate voltage specification
• Operating Temperature Range: Must support -55°C to 150°C (TJ)
• Package Classification: All substitutes are 8-pin surface mount power packages (8-PowerTDFN variants)
• Compliance: All substitutes maintain ROHS3 compliance and MSL 1 rating

Substitute Parts Identified:

The following parts meet substitution criteria for the FDMS8020:

1. BSC0901NSATMA1 (Infineon Technologies) – Active status, 28A (Ta) / 100A (Tc), 1.9 mOhm RDS(on)
2. BSZ0901NSIATMA1 (Infineon Technologies) – Active status, 25A (Ta) / 40A (Tc), 2.1 mOhm RDS(on), Schottky Diode body
3. CSD17575Q3T (Texas Instruments) – Active status, 60A (Ta), 2.3 mOhm RDS(on)
4. CSD17576Q5B (Texas Instruments) – Active status, 100A (Ta), 2.0 mOhm RDS(on)
5. CSD17576Q5BT (Texas Instruments) – Active status, 100A (Ta), 2.0 mOhm RDS(on), Tape & Reel packaging
6. RJK0346DPA-01#J0B (Renesas Electronics Corporation) – Active status, 65A (Ta), 1.8 mOhm RDS(on)
7. RS1E280GNTB (Rohm Semiconductor) – Active status, 28A (Ta) / 80A (Tc), 2.6 mOhm RDS(on)

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts are classified as Active products with current manufacturing status, providing long-term design support and supply chain continuity. The FDMS8020, designated as Obsolete, requires replacement for new designs and ongoing production.

Compliance and Certification Alignment:

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original FDMS8020 specifications. All parts carry EAR99 ECCN classification and REACH Unaffected status, ensuring regulatory consistency across substitution options.

Selection Based on Application Requirements:

• BSC0901NSATMA1 and CSD17576Q5B/Q5BT provide the highest continuous drain current ratings (100A @ Tc), suitable for high-current applications requiring thermal headroom.
• BSZ0901NSIATMA1 offers the closest electrical match to FDMS8020 with 25A (Ta) / 40A (Tc) ratings and integrated Schottky diode body feature.
• RJK0346DPA-01#J0B delivers the lowest RDS(on) specification (1.8 mOhm), optimizing for minimal conduction losses in power-sensitive designs.
• RS1E280GNTB provides balanced performance with 28A (Ta) / 80A (Tc) ratings and moderate RDS(on) of 2.6 mOhm.

Package Considerations:

Substitute parts employ different 8-pin surface mount package variants (PG-TDSON-8-5, PG-TSDSON-8-FL, 8-VSON-CLIP, 8-VSONP, 8-WPAK, 8-HSOP). PCB layout modifications may be required due to dimensional differences between package types. Thermal performance characteristics vary across package geometries; thermal interface design should be evaluated for each substitute selection.

Frequently Asked Questions (FAQ)

Q: Can the FDMS8020 be directly replaced with any of these substitute parts without PCB modification?

A: Direct replacement without PCB modification is not guaranteed. While all substitutes are 8-pin surface mount power packages, physical dimensions and pin layouts differ across package types (PQFN, TDSON, TSDSON, VSON, WPAK, HSOP). PCB footprint verification is required before substitution.

Q: What is the primary reason for substituting the FDMS8020?

A: The FDMS8020 is classified as Obsolete. Substitution is necessary to ensure continued design support, manufacturing availability, and supply chain reliability for new production and design updates.

Q: Which substitute part offers the closest electrical performance match to the FDMS8020?

A: BSZ0901NSIATMA1 provides the closest match with 25A (Ta) / 40A (Tc) continuous drain current ratings, 2.1 mOhm RDS(on), and comparable gate charge characteristics. This part is available in Tape & Reel packaging matching the original FDMS8020 format.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring regulatory alignment with the original FDMS8020 specifications.

Q: What is the significance of RDS(on) differences among substitute parts?

A: RDS(on) (on-state resistance) directly impacts conduction losses and thermal dissipation. Lower RDS(on) values reduce power loss and heat generation. Substitute parts range from 1.8 mOhm (RJK0346DPA-01#J0B) to 2.6 mOhm (RS1E280GNTB). Selection depends on application thermal budget and efficiency requirements.

Q: Do all substitute parts support the same operating temperature range as the FDMS8020?

A: All substitute parts support junction temperatures up to 150°C (TJ). The FDMS8020 specifies -55°C to 150°C (TJ). Verify specific datasheet temperature specifications for each substitute part to confirm full range compatibility.

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

A: Ta represents continuous drain current at ambient temperature (25°C), while Tc represents continuous drain current at case temperature (25°C). Tc ratings are typically higher due to improved thermal conditions at the device case. Application thermal management determines which rating applies to your design.

Q: Can gate charge (Qg) differences affect circuit performance?

A: Yes. Gate charge affects switching speed and driver circuit requirements. Substitute parts range from 30 nC to 68 nC at specified Vgs conditions. Higher gate charge requires more driver current and may increase switching losses. Driver circuit compatibility should be verified for each substitute selection.

Q: Are there packaging advantages to specific substitute parts?

A: Yes. CSD17575Q3T and CSD17576Q5B/Q5BT use compact 8-VSON packages (3.3x3.3 or 5x6), optimizing PCB area. RJK0346DPA-01#J0B uses 8-WPAK with enhanced thermal performance. RS1E280GNTB uses 8-HSOP. Package selection depends on thermal requirements and PCB space constraints.

Q: Which substitute parts are available in Tape & Reel packaging?

A: BSZ0901NSIATMA1, CSD17576Q5BT, RJK0346DPA-01#J0B, and RS1E280GNTB are available in Tape & Reel (TR) packaging, matching the original FDMS8020 format for automated assembly processes.