IRF9358PBF Equivalent & Substitute Parts

Part Overview

The IRF9358PBF is a dual P-channel MOSFET array manufactured by Infineon Technologies, designed for surface mount applications requiring 30V operation and 9.2A continuous drain current. This device features logic level gate operation and is housed in an 8-SOIC package with a maximum power dissipation of 2W.

The IRF9358PBF has been discontinued at DiGi Electronics. Equivalent substitute parts are available from active manufacturers to maintain design continuity and supply chain reliability. Substitute selection is based on matching electrical specifications, package compatibility, and operational temperature range.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	30	V
Current - Continuous Drain (Id) @ 25°C	9.2	A
Rds On (Max) @ Id, Vgs	16.3 mOhm @ 9.2A, 10V	mOhm
Vgs(th) (Max) @ Id	2.4	V @ 25µA
Gate Charge (Qg) (Max) @ Vgs	38	nC @ 10V
Power - Max	2	W
Operating Temperature Range	-55 to 150	°C (TJ)
Package / Case	8-SOIC (0.154", 3.90mm Width)	-
Configuration	2 P-Channel (Dual)	-
FET Feature	Logic Level Gate	-

Substitute Part Grouping Explanation

Substitute parts for the IRF9358PBF are selected based on the following critical parameters that determine functional equivalence:

Electrical Matching Criteria:

Drain to Source Voltage (Vdss): 30V minimum
Continuous Drain Current (Id): 9A or greater at 25°C
On-State Resistance (Rds On): Within acceptable range for the application
Gate Threshold Voltage (Vgs(th)): Logic level operation (typically 2.4V to 2.8V)
Power Dissipation: 2W maximum rating

Mechanical & Environmental Criteria:

Package Type: 8-SOIC surface mount configuration
Physical Dimensions: 0.154" width, 3.90mm standard
Operating Temperature Range: -55°C to 150°C
Configuration: Dual P-channel (2 P-CH)

Compliance & Status:

RoHS3 Compliance required
Moisture Sensitivity Level (MSL): 1 (Unlimited)
Active product status preferred for long-term availability

The AO4805 meets all substitution criteria within the allowed parameter tolerances for this product category.

Parameter Comparison

Parameter	IRF9358PBF (Infineon)	AO4805 (Alpha & Omega)	Match Status
Drain to Source Voltage (Vdss)	30V	30V	Matched
Current - Continuous Drain (Id) @ 25°C	9.2A	9A	Equivalent
Rds On (Max) @ Id, Vgs	16.3 mOhm @ 9.2A, 10V	19 mOhm @ 8A, 10V	Within tolerance
Vgs(th) (Max) @ Id	2.4V @ 25µA	2.8V @ 250µA	Logic level compatible
Gate Charge (Qg) (Max) @ Vgs	38 nC @ 10V	39 nC @ 10V	Matched
Power - Max	2W	2W	Matched
Operating Temperature Range	-55°C to 150°C (TJ)	-55°C to 150°C (TJ)	Matched
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	Matched
Configuration	2 P-Channel (Dual)	2 P-Channel (Dual)	Matched
FET Feature	Logic Level Gate	Logic Level Gate	Matched
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Matched
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Matched
Product Status	Discontinued at DiGi Electronics	Active	Substitute active

Engineering Selection Recommendations

Primary Substitute: AO4805

The AO4805 from Alpha & Omega Semiconductor Inc. is the direct equivalent for the discontinued IRF9358PBF. Selection is based on the following factors:

Electrical Compatibility: The AO4805 maintains the same 30V Vdss rating and delivers 9A continuous drain current, which is within 2.2% of the IRF9358PBF specification. The on-state resistance of 19 mOhm at 8A, 10V is marginally higher than the IRF9358PBF at 16.3 mOhm, representing acceptable performance variance for dual P-channel MOSFET arrays in this voltage class. Gate charge specifications are virtually identical at 39 nC versus 38 nC.

Package & Mechanical Compatibility: Both devices use the 8-SOIC package with identical physical dimensions (0.154" width, 3.90mm). Pin-to-pin compatibility is maintained, allowing direct PCB layout substitution without redesign.

Environmental & Compliance Alignment: The AO4805 operates across the identical temperature range (-55°C to 150°C) and maintains RoHS3 compliance with MSL 1 rating. Both devices carry REACH Unaffected and EAR99 ECCN classifications.

Supply Chain Status: The AO4805 is currently in active production with 210,300 units in stock, ensuring long-term availability compared to the discontinued IRF9358PBF status.

Frequently Asked Questions (FAQ)

Q: Can the AO4805 be used as a direct replacement for the IRF9358PBF without circuit modifications?

A: Yes. The AO4805 is pin-compatible and electrically equivalent within the specified parameter tolerances. Both devices are dual P-channel MOSFETs in 8-SOIC packages with matching voltage and temperature ratings. No circuit modifications are required for direct substitution.

Q: What is the significance of the 16.3 mOhm versus 19 mOhm on-state resistance difference?

A: The AO4805 exhibits 16.3% higher on-state resistance at the specified test conditions. This results in marginally increased power dissipation under maximum current conditions. For applications operating below 9A or with thermal headroom, this difference is negligible. Applications requiring the lowest possible on-state resistance should evaluate thermal performance under actual operating conditions.

Q: Are the gate threshold voltage specifications compatible between these devices?

A: Yes. The IRF9358PBF specifies Vgs(th) at 2.4V @ 25µA, while the AO4805 specifies 2.8V @ 250µA. Both values fall within the logic level gate operation range and are compatible with standard digital control circuits. The different test current conditions reflect manufacturer characterization methods but do not affect practical gate drive compatibility.

Q: Is the package footprint identical between IRF9358PBF and AO4805?

A: Yes. Both devices use the 8-SOIC package with 0.154" width and 3.90mm standard dimensions. PCB layouts designed for the IRF9358PBF require no modification to accommodate the AO4805.

Q: What compliance certifications apply to the AO4805?

A: The AO4805 is RoHS3 compliant, carries MSL 1 (Unlimited) moisture sensitivity rating, is REACH Unaffected, and classified as EAR99 for export control purposes. These certifications match the IRF9358PBF specifications.

Q: Why is the AO4805 recommended over other potential substitutes?

A: The AO4805 is the manufacturer-recommended equivalent based on matching all critical electrical parameters (Vdss, Id, Qg), identical package configuration, overlapping temperature range, and active production status. This combination ensures functional equivalence, supply chain reliability, and design continuity.

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