IRLR230ATM N-Channel MOSFET 200V 7.5A Equivalent & Substitute Parts

Part Overview

The IRLR230ATM is an N-Channel MOSFET manufactured by onsemi, rated for 200V drain-to-source voltage with a continuous drain current of 7.5A at case temperature (Tc). The device is housed in a TO-252AA (DPAK) surface mount package and is classified as obsolete. Due to its obsolete status, equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production and repair applications. Substitute parts must maintain electrical compatibility across critical parameters including voltage rating, current handling capability, on-resistance characteristics, and thermal performance while accommodating the same surface mount package footprint.

Substiute Parts

IRLR230ATM

onsemiIn Stock: 809IRLR230ATM Datasheet

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AOD4504

Alpha & Omega Semiconductor Inc.In Stock: 20326AOD4504 Datasheet

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STD5N20LT4

STMicroelectronicsIn Stock: 15266STD5N20LT4 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRLR230ATM is determined by strict equivalence across the following critical parameters:

Voltage Rating Compatibility: All substitute parts must maintain a minimum drain-to-source voltage (Vdss) rating of 200V to ensure safe operation in the original circuit application.

Current Handling Capability: Substitute parts must support continuous drain current (Id) at case temperature sufficient to handle the 7.5A requirement of the original design. Parts with lower current ratings at Tc may not provide adequate thermal margin.

On-Resistance Characteristics: The on-resistance (Rds On) directly affects power dissipation and thermal performance. Substitute parts with significantly higher Rds On values will increase heat generation and may exceed thermal design limits.

Package Footprint: All substitute parts must use the TO-252-3 (DPAK) surface mount package to ensure mechanical compatibility with existing PCB layouts without requiring board redesign.

Gate Drive Voltage: Substitute parts must operate with standard gate drive voltages (5V or 10V) to maintain compatibility with existing gate driver circuits.

Temperature Range: Operating temperature range must support the -55°C to 150°C specification to ensure reliability across the intended application environment.

Regulatory Compliance: All substitute parts must maintain REACH Unaffected status and EAR99 classification to ensure compliance with export and environmental regulations.

Parameter Comparison

Engineering Selection Recommendations

AOD4504 (Alpha & Omega Semiconductor Inc.): This part is classified as active and maintains full regulatory compliance with ROHS3 certification and REACH Unaffected status. The AOD4504 matches the 200V voltage rating and provides 6A continuous drain current at case temperature, which is within acceptable range for applications designed for 7.5A operation. The on-resistance specification of 400 mOhm at 10V gate drive is equivalent to the IRLR230ATM at 5V gate drive. The higher gate threshold voltage (3.7V) and increased gate charge (115 nC) reflect the 10V gate drive specification. The AOD4504 offers extended operating temperature range to 175°C and maintains the same TO-252-3 DPAK package footprint. Higher inventory availability (20,300 pieces) supports production continuity.

STD5N20LT4 (STMicroelectronics): This part is classified as active with ROHS3 compliance and REACH Unaffected status. The STD5N20LT4 maintains the 200V voltage rating and provides 5A continuous drain current at case temperature. The on-resistance specification of 700 mOhm at 5V gate drive is higher than the IRLR230ATM, resulting in increased power dissipation. The lower gate charge (6 nC) and reduced input capacitance (242 pF) indicate faster switching characteristics. The part operates with 5V gate drive, matching the original design. Operating temperature range matches the IRLR230ATM at -55°C to 150°C. The STD5N20LT4 is part of the STripFET™ series and maintains the same TO-252-3 DPAK package footprint. Inventory availability (15,165 pieces) supports production requirements.

Both substitute parts maintain electrical compatibility with the IRLR230ATM across critical parameters including voltage rating, package type, and regulatory compliance. Selection between AOD4504 and STD5N20LT4 depends on specific application requirements regarding current capacity, on-resistance characteristics, and gate drive voltage compatibility.

Frequently Asked Questions (FAQ)

Q: Can the AOD4504 directly replace the IRLR230ATM in all applications?

A: The AOD4504 maintains the same 200V voltage rating and TO-252-3 DPAK package footprint. The continuous drain current at case temperature is 6A compared to 7.5A for the IRLR230ATM. Applications operating at or near the 7.5A maximum rating may experience reduced thermal margin with the AOD4504. The 10V gate drive specification differs from the IRLR230ATM's 5V specification; gate driver circuits must support 10V output to achieve optimal on-resistance performance.

Q: What are the implications of the STD5N20LT4's higher on-resistance?

A: The STD5N20LT4 specifies 700 mOhm on-resistance at 5V gate drive compared to 400 mOhm for the IRLR230ATM. Higher on-resistance increases power dissipation during conduction, generating additional heat. Applications with continuous high-current operation or limited thermal dissipation capability may require thermal analysis to confirm the STD5N20LT4 remains within acceptable operating limits.

Q: Are all substitute parts compatible with the existing PCB layout?

A: All substitute parts use the TO-252-3 (DPAK) surface mount package with identical pin configuration and footprint dimensions. No PCB layout modifications are required for mechanical compatibility. Gate driver circuits must be evaluated for voltage compatibility, as the AOD4504 requires 10V gate drive while the IRLR230ATM and STD5N20LT4 operate with 5V gate drive.

Q: What is the significance of the gate charge differences between parts?

A: Gate charge (Qg) represents the total charge required to switch the MOSFET from off to on state. The IRLR230ATM specifies 27 nC at 5V, the AOD4504 specifies 115 nC at 10V, and the STD5N20LT4 specifies 6 nC at 5V. Higher gate charge increases switching time and gate driver power consumption. The STD5N20LT4's lower gate charge enables faster switching transitions, while the AOD4504's higher gate charge reflects its 10V gate drive specification.

Q: How do the operating temperature ranges affect part selection?

A: The IRLR230ATM and STD5N20LT4 operate from -55°C to 150°C junction temperature. The AOD4504 extends the upper limit to 175°C. Applications requiring operation at elevated temperatures benefit from the AOD4504's extended range. All parts maintain the same lower temperature limit of -55°C.

Q: What inventory considerations apply to these substitute parts?

A: The IRLR230ATM is obsolete with 764 pieces in stock. The AOD4504 is active with 20,300 pieces available, providing superior long-term availability. The STD5N20LT4 is active with 15,165 pieces available. For new designs and long-term production, the active status of both substitute parts ensures continued component availability.

Q: Are there regulatory or compliance differences between the parts?

A: All three parts maintain REACH Unaffected status and EAR99 classification. The AOD4504 and STD5N20LT4 are ROHS3 compliant, while the IRLR230ATM compliance status is not specified. All parts share the same HTSUS classification (8541.29.0095) and MSL rating (1, Unlimited), ensuring equivalent regulatory treatment in procurement and supply chain management.