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IRFS3507TRLPBF N-Channel 75V 97A MOSFET Equivalent & Substitute Parts
Part Overview
The IRFS3507TRLPBF is an N-Channel MOSFET manufactured by Infineon Technologies in the HEXFET® series, rated for 75V drain-to-source voltage and 97A continuous drain current at 25°C. The device is housed in a D2PAK (TO-263-3) surface mount package with a maximum power dissipation of 190W. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Drain-to-Source Voltage (Vdss) | 75 | V |
| Continuous Drain Current (Id) @ 25°C | 97 | A |
| On-Resistance (Rds On) @ 58A, 10V | 8.8 | mOhm |
| Gate Threshold Voltage (Vgs(th)) @ 100µA | 4 | V |
| Maximum Gate Voltage (Vgs) | ±20 | V |
| Power Dissipation (Max) | 190 | W |
| Operating Temperature Range | -55 to 175 | °C |
| Package Type | D2PAK (TO-263-3) | Surface Mount |
| Moisture Sensitivity Level | 1 (Unlimited) | MSL |
Substitute Part Grouping Explanation
Substitution of the IRFS3507TRLPBF is determined by the following critical parameters:
Voltage Rating (Vdss): The substitute must support the same or higher drain-to-source voltage (75V minimum). Parts rated below 75V are not suitable for direct substitution in applications requiring the full voltage rating.
Current Rating (Id): The substitute must support continuous drain current equal to or greater than 97A at 25°C. Parts with lower current ratings cannot handle the same load conditions.
On-Resistance (Rds On): The substitute should maintain comparable on-resistance characteristics to ensure similar power dissipation and thermal performance. Significantly higher on-resistance values result in increased heat generation.
Package Type: All substitutes must use the D2PAK (TO-263-3) surface mount package to ensure mechanical and thermal compatibility with existing PCB layouts.
Operating Temperature Range: The substitute must support the full operating temperature range of -55°C to 175°C.
Gate Voltage Compatibility: The substitute must accept the same gate drive voltage range (±20V or compatible).
Substitutes are grouped into two categories:
Category A - Direct Voltage & Current Match (75V, ≥97A): Parts meeting or exceeding both the 75V voltage rating and 97A current requirement.
Category B - Voltage Match with Reduced Current (75V, <97A): Parts meeting the 75V voltage requirement but with lower current ratings, suitable for applications with reduced current demands.
Category C - Alternative Voltage Ratings (≠75V): Parts with different voltage ratings that may be suitable for specific application requirements where voltage derating is acceptable.
Parameter Comparison
| Part Number | Manufacturer | Vdss (V) | Id @ 25°C (A) | Rds On (mOhm) | Vgs(th) (V) | Vgs Max (V) | Power Dissipation (W) | Status | Package |
|---|---|---|---|---|---|---|---|---|---|
| IRFS3507TRLPBF | Infineon | 75 | 97 | 8.8 @ 58A, 10V | 4 @ 100µA | ±20 | 190 | Obsolete | D2PAK |
| STB140NF75T4 | STMicroelectronics | 75 | 120 | 7.5 @ 70A, 10V | 4 @ 250µA | ±20 | 310 | Active | D2PAK |
| PSMN008-75B,118 | Nexperia | 75 | 75 | 8.5 @ 25A, 10V | 4 @ 1mA | ±20 | 230 | Active | D2PAK |
| STB75NF75LT4 | STMicroelectronics | 75 | 75 | 11 @ 37.5A, 10V | 2.5 @ 250µA | ±15 | 300 | Active | D2PAK |
| HUF75545S3ST | onsemi | 80 | 75 | 10 @ 75A, 10V | 4 @ 250µA | ±20 | 270 | Active | D2PAK |
| PSMN8R7-80BS,118 | Nexperia | 80 | 90 | 8.7 @ 10A, 10V | 4 @ 1mA | ±20 | 170 | Active | D2PAK |
| PSMN012-80BS,118 | Nexperia | 80 | 74 | 11 @ 15A, 10V | 4 @ 1mA | ±20 | 148 | Active | D2PAK |
| BUK9609-75A,118 | NXP USA Inc. | 75 | 75 | 8.5 @ 25A, 10V | 2 @ 1mA | ±10 | 230 | Active | D2PAK |
| STB140NF55T4 | STMicroelectronics | 55 | 80 | 8 @ 40A, 10V | 4 @ 250µA | ±20 | 300 | Active | D2PAK |
| BUK768R3-60E,118 | Nexperia USA Inc. | 60 | 75 | 8.3 @ 20A, 10V | 4 @ 1mA | ±20 | 137 | Active | D2PAK |
| BUK9609-40B,118 | Nexperia USA Inc. | 40 | 75 | 7 @ 25A, 10V | 2 @ 1mA | ±15 | 157 | Active | D2PAK |
Engineering Selection Recommendations
Primary Substitute - Category A (Direct Match):
STB140NF75T4 (STMicroelectronics) is the recommended primary substitute. This part maintains the 75V voltage rating and exceeds the 97A current requirement with 120A continuous drain current. The device features lower on-resistance (7.5 mOhm @ 70A, 10V) compared to the original part, resulting in improved thermal performance and reduced power dissipation. The STB140NF75T4 is active in production, RoHS3 compliant, and carries AEC-Q101 automotive qualification. The D2PAK package ensures direct mechanical compatibility.
Secondary Substitutes - Category A (Voltage Match, Current Adequate):
PSMN8R7-80BS,118 (Nexperia) provides 80V voltage rating with 90A continuous drain current, approaching the original 97A specification. This part is active in production and RoHS3 compliant. The 80V rating provides additional voltage margin for applications with transient overvoltage conditions.
Tertiary Substitutes - Category B (Voltage Match, Reduced Current):
PSMN008-75B,118 (Nexperia) maintains the exact 75V voltage rating with 75A continuous drain current. This part is suitable for applications where the full 97A current is not required. The device is active in production and RoHS3 compliant.
STB75NF75LT4 (STMicroelectronics) also maintains 75V rating with 75A current. This part offers 300W power dissipation and is active in production with RoHS3 compliance.
BUK9609-75A,118 (NXP USA Inc.) provides 75V rating with 75A current and is active in production. This part carries AEC-Q101 automotive qualification.
Alternative Voltage Ratings - Category C:
HUF75545S3ST (onsemi) offers 80V rating with 75A current, providing voltage margin with reduced current capability. This part is active in production and RoHS3 compliant.
BUK768R3-60E,118 (Nexperia USA Inc.) provides 60V rating with 75A current and is suitable for applications with lower voltage requirements. This part carries AEC-Q101 automotive qualification.
STB140NF55T4 (STMicroelectronics) offers 55V rating with 80A current for applications with reduced voltage requirements. This part is active in production and RoHS3 compliant.
BUK9609-40B,118 (Nexperia USA Inc.) provides 40V rating with 75A current for low-voltage applications. This part carries AEC-Q101 automotive qualification.
All recommended substitutes maintain the D2PAK surface mount package, -55°C to 175°C operating temperature range, and MSL 1 moisture sensitivity level. Selection should be based on specific application voltage and current requirements.
Frequently Asked Questions (FAQ)
Q: Can STB140NF75T4 directly replace IRFS3507TRLPBF in all applications?
A: STB140NF75T4 is electrically compatible for applications requiring 75V and up to 97A continuous drain current. Both parts use the D2PAK package and support the same gate voltage range (±20V). The lower on-resistance of STB140NF75T4 (7.5 mOhm vs. 8.8 mOhm) results in reduced power dissipation. Verification of PCB layout and thermal management is required for any substitution.
Q: What is the difference between parts rated 75V and 80V?
A: The 80V-rated parts (HUF75545S3ST, PSMN8R7-80BS,118, PSMN012-80BS,118) provide additional voltage margin and can withstand higher transient overvoltage conditions. They are suitable for applications where the original 75V rating is marginal. However, these parts typically have lower current ratings (74A to 90A) compared to the original 97A specification.
Q: Are all substitute parts RoHS3 compliant?
A: All active substitute parts listed are RoHS3 compliant. The original IRFS3507TRLPBF is obsolete and does not carry RoHS3 compliance status. For new designs, RoHS3-compliant substitutes are required.
Q: Which substitute offers the best thermal performance?
A: STB140NF75T4 provides the highest power dissipation rating (310W) and lowest on-resistance (7.5 mOhm @ 70A, 10V) among 75V-rated substitutes, resulting in superior thermal performance. This part is recommended for applications with high current density or stringent thermal requirements.
Q: Can I use a lower voltage-rated part as a substitute?
A: Lower voltage-rated parts (BUK768R3-60E,118 at 60V, BUK9609-40B,118 at 40V, STB140NF55T4 at 55V) can only be used if the application circuit operates below their respective voltage ratings. These parts are not suitable for applications requiring the full 75V rating of the original part.
Q: What is the significance of gate threshold voltage (Vgs(th)) differences?
A: Gate threshold voltage determines the minimum gate-source voltage required to turn on the MOSFET. The original part specifies 4V @ 100µA. Most substitutes maintain 4V threshold voltage, ensuring compatible gate drive circuits. Parts with lower threshold voltages (2V to 2.5V) may require gate drive circuit verification to prevent unintended turn-on.
Q: Are automotive-qualified parts necessary for my application?
A: Automotive-qualified parts (AEC-Q101 certified) such as BUK768R3-60E,118, BUK9609-75A,118, BUK9609-40B,118, and STB140NF55T4 undergo additional reliability testing and are recommended for automotive and high-reliability applications. Non-automotive parts are suitable for industrial and consumer applications.
Q: What is the impact of on-resistance (Rds On) on circuit performance?
A: On-resistance directly affects power dissipation and heat generation. Lower on-resistance values reduce I²R losses. The original part specifies 8.8 mOhm @ 58A, 10V. Substitutes with comparable or lower on-resistance (such as STB140NF75T4 at 7.5 mOhm) improve efficiency. Higher on-resistance values increase thermal load and may require enhanced cooling.
Q: Can I use PSMN012-80BS,118 if my application requires 97A continuous current?
A: PSMN012-80BS,118 is rated for 74A continuous drain current, which is below the original 97A specification. This part is suitable only for applications where the actual current requirement is 74A or less. Using this part in a 97A application would exceed its current rating and cause device failure.
Q: What packaging considerations apply to these substitutes?
A: All listed substitutes use the D2PAK (TO-263-3) surface mount package, identical to the original part. This ensures direct mechanical compatibility with existing PCB layouts. No package adapter or redesign is required for substitution.
Q: How do I verify compatibility before implementing a substitute?
A: Verify that the substitute part meets or exceeds the original part's voltage rating (Vdss), continuous drain current (Id), and gate voltage range (Vgs). Confirm the D2PAK package type. Review the datasheet for on-resistance and power dissipation characteristics to ensure thermal management remains adequate. Perform functional testing with the actual gate drive circuit to confirm proper operation.
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