FDD2612 N-Channel MOSFET 200V 4.9A Equivalent & Substitute Parts

Part Overview

The FDD2612 is an N-Channel MOSFET manufactured by onsemi, rated for 200V drain-to-source voltage with 4.9A continuous drain current at 25°C. The device is housed in a TO-252AA surface mount package and features the PowerTrench® technology series. The FDD2612 is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity. Substitute parts must maintain electrical compatibility across voltage ratings, current handling, and thermal characteristics while accommodating available packaging options.

Substiute Parts

FDD2612

onsemiIn Stock: 23298FDD2612 Datasheet

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RND030N20TL

Rohm SemiconductorIn Stock: 5218RND030N20TL Datasheet

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STD5N20LT4

STMicroelectronicsIn Stock: 15266STD5N20LT4 Datasheet

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ZXMN20B28KTC

Diodes IncorporatedIn Stock: 15527ZXMN20B28KTC Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the FDD2612 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Drain-to-Source Voltage (Vdss): Must equal or exceed 200V
• Continuous Drain Current (Id): Must support minimum 4.9A at rated temperature
• Package Type: Must be compatible with TO-252-3 / DPAK footprint
• Mounting Type: Surface mount configuration required
• FET Type: N-Channel MOSFET technology

Secondary Compatibility Parameters:

• On-State Resistance (Rds On): Lower values indicate improved performance; values within 720 mOhm range are acceptable
• Gate Threshold Voltage (Vgs(th)): Must be within ±20V gate voltage specification
• Operating Temperature Range: Must support minimum -55°C to 150°C
• Moisture Sensitivity Level: MSL 1 (Unlimited) preferred for manufacturing reliability

Substitute parts are grouped based on their ability to meet or exceed the primary criteria while maintaining electrical performance within acceptable tolerances for the application.

Parameter Comparison

Engineering Selection Recommendations

STD5N20LT4 (STMicroelectronics)

The STD5N20LT4 is the primary substitute for the FDD2612. This device meets or exceeds all primary substitution criteria: 200V Vdss rating, 5A continuous drain current (exceeding the 4.9A requirement), and identical TO-252-3 DPAK package. The STD5N20LT4 features lower on-state resistance (700 mOhm vs. 720 mOhm) and lower gate charge (6 nC vs. 11 nC), resulting in improved switching efficiency. The device is classified as Active with ROHS3 compliance and unlimited moisture sensitivity level. Operating temperature range extends to -55°C to 150°C, meeting the minimum requirement. Inventory availability is 15,165 pieces.

RND030N20TL (Rohm Semiconductor)

The RND030N20TL is a secondary substitute option. While it maintains the 200V Vdss rating and TO-252-3 DPAK package compatibility, the continuous drain current rating of 3A is below the FDD2612 specification of 4.9A. This device is suitable only for applications where the actual operating current does not exceed 3A. The RND030N20TL is classified as Last Time Buy, indicating limited future availability. ROHS3 compliance and unlimited moisture sensitivity level are confirmed. Inventory availability is 5,200 pieces.

ZXMN20B28KTC (Diodes Incorporated)

The ZXMN20B28KTC is not recommended as a direct substitute. Although it maintains the 200V Vdss rating and TO-252-3 DPAK package, the continuous drain current rating of 1.5A is significantly below the FDD2612 specification of 4.9A. This device is suitable only for low-current applications and does not provide functional equivalence for the original design. The device is classified as Active with ROHS3 compliance. Inventory availability is 15,465 pieces.

Frequently Asked Questions (FAQ)

Q: Can the STD5N20LT4 directly replace the FDD2612 in existing designs?

A: Yes. The STD5N20LT4 meets all primary substitution criteria: identical 200V Vdss rating, equal or greater 5A continuous drain current, and identical TO-252-3 DPAK package footprint. The device is pin-compatible and electrically compatible for applications operating at or below 4.9A continuous drain current.

Q: What is the key difference between the STD5N20LT4 and RND030N20TL?

A: The primary difference is continuous drain current rating. The STD5N20LT4 is rated for 5A, while the RND030N20TL is rated for 3A. For applications requiring the full 4.9A capability of the FDD2612, only the STD5N20LT4 is suitable. The RND030N20TL is limited to designs operating below 3A.

Q: Why is the ZXMN20B28KTC not recommended as a substitute?

A: The ZXMN20B28KTC has a continuous drain current rating of only 1.5A, which is insufficient for applications requiring the FDD2612's 4.9A capability. While the package and voltage rating are compatible, the current limitation makes this device unsuitable for functional equivalence.

Q: Are all substitute parts available in the same package?

A: Yes. All substitute parts listed are available in the TO-252-3 DPAK (2 Leads + Tab) surface mount package, ensuring mechanical and electrical compatibility with existing PCB layouts.

Q: What is the product status significance for these substitutes?

A: The STD5N20LT4 is classified as Active, indicating ongoing manufacturing and long-term availability. The RND030N20LT4 is classified as Last Time Buy, indicating limited future production. The FDD2612 is Obsolete, making substitution necessary for new designs and production continuity.

Q: Do all substitute parts meet RoHS compliance requirements?

A: The STD5N20LT4, RND030N20TL, and ZXMN20B28KTC are all ROHS3 compliant. The FDD2612 RoHS status is not specified in the provided data.

Q: What is the operating temperature range consideration for substitution?

A: The FDD2612 operates from -55°C to 175°C. All substitute parts operate from -55°C to 150°C, which is acceptable for most applications. Designs requiring operation above 150°C junction temperature require verification against specific application requirements.

Q: How do gate charge differences affect circuit design?

A: The STD5N20LT4 has lower gate charge (6 nC vs. 11 nC), resulting in faster switching times and reduced gate drive power requirements. The RND030N20TL and ZXMN20B28KTC have gate charges of 6.7 nC and 8.1 nC respectively. These differences are generally accommodated by standard gate drive circuits but should be verified for high-frequency switching applications.