FQB22P10TM P-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The FQB22P10TM is an onsemi QFET® series P-Channel MOSFET rated for 100V drain-to-source voltage with 22A continuous drain current in a D2PAK surface mount package. This device is classified as Active product status and is suitable for switching applications requiring moderate voltage and current handling in compact form factors.

Substitute parts are identified based on matching or exceeding the electrical performance parameters of the FQB22P10TM while maintaining compatibility with the D2PAK package footprint and surface mount assembly requirements.

Substiute Parts

FQB22P10TM

onsemiIn Stock: 15277FQB22P10TM Datasheet

Current PartRFQ

IRF9540NSTRLPBF

Infineon TechnologiesIn Stock: 41464IRF9540NSTRLPBF Datasheet

SimilarRFQ

IRF9540NSTRRPBF

Infineon TechnologiesIn Stock: 17363IRF9540NSTRRPBF Datasheet

SimilarRFQ

IRF9Z34NSTRLPBF

Infineon TechnologiesIn Stock: 17215IRF9Z34NSTRLPBF Datasheet

SimilarRFQ

RSJ250P10TL

Rohm SemiconductorIn Stock: 2035RSJ250P10TL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria applied strictly to the provided parameters:

Primary Substitution Criteria:

• Drain-to-Source Voltage (Vdss): Equal to or greater than 100V
• Continuous Drain Current (Id): Equal to or greater than 22A
• Package Type: D2PAK (TO-263-3) surface mount
• FET Type: P-Channel
• Technology: MOSFET (Metal Oxide)

Secondary Compatibility Factors:

• On-Resistance (Rds On): Lower or equal values indicate improved performance
• Gate Charge (Qg): Lower values reduce switching losses
• Operating Temperature Range: Must support application requirements
• Product Status: Active status preferred for new designs
• RoHS3 Compliance: Required for regulatory alignment

The following substitute parts meet the primary substitution criteria:

• IRF9540NSTRLPBF (Infineon): 100V, 23A, D2PAK, Active status
• IRF9540NSTRRPBF (Infineon): 100V, 23A, D2PAK, Obsolete status
• RSJ250P10TL (Rohm Semiconductor): 100V, 25A, LPTS package, Active status

The following part does not meet primary substitution criteria:

• IRF9Z34NSTRLPBF (Infineon): 55V rating falls below 100V requirement; not suitable as direct substitute

Parameter Comparison

Engineering Selection Recommendations

IRF9540NSTRLPBF (Infineon Technologies) — Recommended Substitute

This part meets all primary substitution criteria with Active product status. The 23A continuous drain current exceeds the FQB22P10TM requirement by 1A. The D2PAK package provides direct footprint compatibility. On-resistance of 117mOhm at 14A is lower than the FQB22P10TM specification, indicating improved efficiency. Gate charge of 110nC is higher than the original part, resulting in increased switching losses. Operating temperature range of -55°C to 150°C is narrower than the FQB22P10TM (-55°C to 175°C); applications requiring operation above 150°C require evaluation. RoHS3 compliance and MSL 1 rating match the original part specifications.

IRF9540NSTRRPBF (Infineon Technologies) — Not Recommended for New Designs

This part is electrically identical to IRF9540NSTRLPBF but carries Obsolete product status. While inventory is available (17,288 pcs), obsolete classification indicates discontinued manufacturing and limited long-term supply assurance. Use only in legacy system maintenance or when IRF9540NSTRLPBF is unavailable.

RSJ250P10TL (Rohm Semiconductor) — Alternative Substitute with Package Consideration

This part exceeds primary substitution criteria with 25A continuous drain current and 100V Vdss rating. On-resistance of 63mOhm at 25A is significantly lower than the FQB22P10TM, providing superior efficiency. Gate charge of 60nC is higher than the original part. The LPTS package differs from the D2PAK footprint; PCB layout modification is required. Input capacitance of 8000pF is substantially higher than comparable parts, affecting switching characteristics. Active product status and RoHS3 compliance are confirmed. Operating temperature specification is limited to 150°C maximum. Inventory availability is lower (2,000 pcs) compared to other substitutes.

IRF9Z34NSTRLPBF (Infineon Technologies) — Not Suitable

This part does not qualify as a substitute. The 55V Vdss rating is insufficient for applications requiring 100V operation. Although the part is Active and RoHS3 compliant, the voltage rating limitation disqualifies it from direct substitution.

Frequently Asked Questions (FAQ)

Q: Can IRF9540NSTRLPBF be used as a direct replacement for FQB22P10TM?

A: Yes. IRF9540NSTRLPBF meets all primary substitution criteria: 100V Vdss, 23A continuous drain current (exceeds 22A requirement), D2PAK package compatibility, P-Channel MOSFET technology, and Active product status. Electrical performance is equivalent or superior. Operating temperature range is narrower (-55°C to 150°C versus -55°C to 175°C); verify application requirements do not exceed 150°C.

Q: What is the difference between IRF9540NSTRLPBF and IRF9540NSTRRPBF?

A: Both parts are electrically identical with matching electrical specifications. The primary difference is product status: IRF9540NSTRLPBF is Active, while IRF9540NSTRRPBF is Obsolete. For new designs, IRF9540NSTRLPBF is the appropriate selection. IRF9540NSTRRPBF should be used only for legacy system support when the Active variant is unavailable.

Q: Why is IRF9Z34NSTRLPBF listed as a substitute if it cannot replace the FQB22P10TM?

A: IRF9Z34NSTRLPBF is listed in the FQB22P10TM substitute field within the provided data but does not meet the primary substitution criterion of 100V Vdss. The 55V rating is insufficient for 100V applications. This part is not a valid substitute and should not be selected for FQB22P10TM replacement.

Q: Can RSJ250P10TL be used in place of FQB22P10TM?

A: RSJ250P10TL meets electrical substitution criteria (100V, 25A) but uses an LPTS package instead of D2PAK. Direct PCB footprint compatibility does not exist; circuit board layout modification is required. The LPTS package differs in pin configuration and thermal characteristics. Evaluate mechanical fit and thermal performance before selection. Lower inventory availability (2,000 pcs) should be considered for supply chain planning.

Q: What are the key electrical differences between FQB22P10TM and IRF9540NSTRLPBF?

A: Both parts share 100V Vdss rating and similar gate threshold voltage (4V). IRF9540NSTRLPBF provides 1A higher continuous drain current (23A versus 22A) and lower on-resistance (117mOhm versus 125mOhm), indicating improved efficiency. Gate charge is higher in IRF9540NSTRLPBF (110nC versus 50nC), resulting in increased switching losses. Operating temperature range is narrower for IRF9540NSTRLPBF (-55°C to 150°C versus -55°C to 175°C).

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (IRF9540NSTRLPBF, IRF9540NSTRRPBF, and RSJ250P10TL) are RoHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the FQB22P10TM specifications.

Q: What should be considered when selecting between multiple substitute options?

A: Selection should prioritize: (1) Product Status — Active status (IRF9540NSTRLPBF, RSJ250P10TL) over Obsolete (IRF9540NSTRRPBF); (2) Package Compatibility — D2PAK direct fit (IRF9540NSTRLPBF) versus package change (RSJ250P10TL); (3) Operating Temperature Range — verify application maximum temperature does not exceed 150°C for Infineon parts; (4) On-Resistance Performance — lower values reduce power dissipation; (5) Inventory Availability — ensure supply chain continuity for production requirements.