SPU30P06P P-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The SPU30P06P is a P-Channel MOSFET manufactured by Infineon Technologies, rated for 60V drain-to-source voltage with 30A continuous drain current at 25°C. This device is housed in a TO-251-3 (IPak) through-hole package and is designed for applications requiring moderate power dissipation up to 125W at the case temperature. The SPU30P06P carries an obsolete product status, making identification of compatible substitute components essential for ongoing design support, maintenance, and production continuity.

Substiute Parts

SPU30P06P

Infineon TechnologiesIn Stock: 1117SPU30P06P Datasheet

Current PartRFQ

IRFU5305PBF

Infineon TechnologiesIn Stock: 17476IRFU5305PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPU30P06P is determined by strict alignment of the following electrical and mechanical parameters:

Critical Substitution Parameters:

• FET Type: P-Channel topology
• Package Type: TO-251-3 (IPak) through-hole configuration
• Drain-to-Source Voltage (Vdss): Minimum 60V rating required
• Continuous Drain Current (Id): Minimum 30A at 25°C
• Operating Temperature Range: -55°C to 175°C (TJ)
• Mounting Type: Through-hole

The IRFU5305PBF qualifies as a substitute based on the following alignment:

• P-Channel MOSFET technology
• TO-251-3 (IPak) package compatibility
• Vdss rating of 55V (operates within the 60V application envelope when circuit design accounts for voltage margin)
• Continuous drain current of 31A (exceeds 30A requirement)
• Identical operating temperature range (-55°C to 175°C)
• Through-hole mounting compatibility

Parameter Comparison

Engineering Selection Recommendations

IRFU5305PBF Substitution Basis:

The IRFU5305PBF is an active-status P-Channel MOSFET that provides functional equivalence to the obsolete SPU30P06P within defined application parameters. The substitute maintains identical package geometry (TO-251-3 IPak), mounting type (through-hole), and operating temperature range (-55°C to 175°C TJ).

Voltage Rating Consideration: The IRFU5305PBF carries a Vdss rating of 55V compared to the SPU30P06P's 60V rating. This 5V differential is acceptable in applications where the maximum supply voltage does not exceed 55V. For circuits designed to operate at voltages approaching 60V, the reduced voltage margin of the substitute must be evaluated against system requirements and safety margins.

Current and Thermal Performance: The IRFU5305PBF delivers 31A continuous drain current, exceeding the SPU30P06P's 30A specification. However, the maximum power dissipation is rated at 110W (Tc) versus 125W (Tc) for the original part. Thermal design must account for this 15W reduction in maximum dissipation capacity.

On-Resistance Characteristics: The IRFU5305PBF exhibits lower on-resistance (65 mOhm @ 16A, 10V) compared to the SPU30P06P (75 mOhm @ 21.5A, 10V), resulting in reduced conduction losses and improved thermal efficiency.

Compliance and Availability: The IRFU5305PBF is ROHS3 compliant and maintains active product status with documented inventory availability, ensuring long-term supply chain continuity. Both devices share identical REACH and ECCN classifications (REACH Unaffected, EAR99).

Frequently Asked Questions (FAQ)

Q: Can the IRFU5305PBF directly replace the SPU30P06P in all applications?

A: Direct replacement is possible in applications where the maximum supply voltage does not exceed 55V. The IRFU5305PBF's lower Vdss rating (55V vs. 60V) requires circuit-level verification. If your application operates at voltages between 55V and 60V, the reduced voltage margin must be evaluated against system safety requirements and design specifications.

Q: What is the significance of the power dissipation difference (125W vs. 110W)?

A: The SPU30P06P supports maximum power dissipation of 125W at the case temperature, while the IRFU5305PBF is rated for 110W. This 15W difference affects thermal design calculations. If your application requires dissipation above 110W, thermal management modifications or alternative components must be considered.

Q: Are the packages physically identical?

A: Yes. Both the SPU30P06P and IRFU5305PBF use the TO-251-3 (IPak) through-hole package with identical pin configuration and lead geometry. No PCB layout modifications are required for mechanical compatibility.

Q: Why does the IRFU5305PBF have lower on-resistance despite similar current ratings?

A: The IRFU5305PBF represents a more recent design iteration within the Infineon HEXFET® series, incorporating improved semiconductor processing that reduces on-resistance. This results in lower conduction losses and improved efficiency compared to the older SPU30P06P design.

Q: Is the IRFU5305PBF suitable for new designs?

A: Yes. The IRFU5305PBF carries active product status and is ROHS3 compliant, making it appropriate for new designs. The SPU30P06P's obsolete status makes the IRFU5305PBF the recommended choice for ongoing development and production.

Q: What are the gate charge differences, and do they affect circuit design?

A: The IRFU5305PBF has a higher gate charge (63 nC @ 10V) compared to the SPU30P06P (48 nC @ 10V). This 15 nC difference may require adjustment of gate driver timing and current capacity in high-frequency switching applications. Verify that your gate driver can supply the required charge within the specified switching frequency.

Q: Are there any compliance or certification differences?

A: Both devices share identical REACH and ECCN classifications. The IRFU5305PBF adds ROHS3 compliance, which is advantageous for applications subject to environmental regulations. No compliance barriers exist for substitution.