FDPF18N50T-G Equivalent & Substitute Parts

Part Overview

The FDPF18N50T-G is an N-Channel MOSFET manufactured by onsemi, rated for 500V drain-to-source voltage and 18A continuous drain current in a TO-220F-3 through-hole package. This part is classified as obsolete and requires substitution for new designs and procurement activities. Equivalent and substitute parts maintain identical electrical performance and mechanical compatibility while offering active product status and improved availability.

Substiute Parts

FDPF18N50T-G

onsemiIn Stock: 928FDPF18N50T-G Datasheet

Current PartRFQ

FDPF18N50

onsemiIn Stock: 17135FDPF18N50 Datasheet

MFR RecommendedRFQ

FDPF18N50T

onsemiIn Stock: 31422FDPF18N50T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the FDPF18N50T-G is based on electrical and mechanical parameter equivalence within the onsemi UniFET™ series. The substitute parts maintain identical specifications across all critical performance parameters: 500V Vdss rating, 18A continuous drain current, 38.5W maximum power dissipation, and TO-220F-3 package configuration. Both substitute parts are manufactured by onsemi and comply with ROHS3 and REACH requirements. The substitution logic prioritizes active product status while preserving full electrical and thermal performance characteristics.

Key parameters determining substitution eligibility:

• Drain to Source Voltage (Vdss): 500 V
• Continuous Drain Current (Id): 18A
• Power Dissipation: 38.5W
• Package Type: TO-220F-3
• Mounting Configuration: Through Hole
• Compliance Standards: ROHS3, REACH Unaffected

Parameter Comparison

Engineering Selection Recommendations

Both FDPF18N50T and FDPF18N50 are direct substitutes for the obsolete FDPF18N50T-G. Selection between the two active alternatives is based on availability and procurement requirements:

FDPF18N50T is the primary recommended substitute, offering 31,400 pieces in current inventory stock. This part maintains full electrical and mechanical equivalence with identical specifications across all performance parameters.

FDPF18N50 is an alternative substitute with 17,100 pieces in inventory. This part is functionally equivalent with identical electrical ratings and package configuration.

Both substitute parts are manufactured by onsemi within the UniFET™ series, comply with ROHS3 and REACH requirements, and are classified as active products. The obsolete status of FDPF18N50T-G necessitates transition to either active substitute for new procurement and design activities. Electrical performance, thermal characteristics, and mechanical compatibility are fully preserved across all three part numbers.

Frequently Asked Questions (FAQ)

Q: Can FDPF18N50T and FDPF18N50 be used interchangeably with FDPF18N50T-G?

A: Yes. Both substitute parts are electrically and mechanically equivalent to FDPF18N50T-G. All critical parameters including Vdss (500V), Id (18A), Rds On (265mOhm), power dissipation (38.5W), and package configuration (TO-220F-3) are identical. Direct substitution is supported without circuit modification.

Q: What is the difference between FDPF18N50T and FDPF18N50?

A: Both parts are functionally identical with matching electrical specifications and package types. The primary difference is product availability. FDPF18N50T has higher inventory (31,400 pieces) compared to FDPF18N50 (17,100 pieces). Selection should be based on procurement lead time and supply chain requirements.

Q: Why is FDPF18N50T-G classified as obsolete?

A: FDPF18N50T-G is an obsolete product designation. The active equivalents FDPF18N50T and FDPF18N50 provide continued access to the same electrical and mechanical specifications within the onsemi product portfolio.

Q: Are the substitute parts compatible with existing PCB layouts designed for FDPF18N50T-G?

A: Yes. Both substitute parts use the TO-220F-3 package with identical pin configuration and through-hole mounting. PCB layouts, thermal management solutions, and mechanical mounting requirements remain unchanged.

Q: Do the substitute parts meet the same compliance standards as FDPF18N50T-G?

A: Yes. Both FDPF18N50T and FDPF18N50 are ROHS3 Compliant and REACH Unaffected, matching the compliance profile of the original part.

Q: What are the thermal characteristics of the substitute parts?

A: Both substitute parts maintain 38.5W maximum power dissipation and operate across the temperature range of -55°C to 150°C (TJ), identical to FDPF18N50T-G specifications.