IRFS7762TRLPBF N-Channel 75V 85A MOSFET Equivalent & Substitute Parts

Part Overview

The IRFS7762TRLPBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 75V drain-to-source voltage and 85A continuous drain current at 25°C. This device is packaged in a TO-263-3 (D2PAK) surface mount configuration with a maximum power dissipation of 140W. The part is classified as Obsolete, making identification of functionally equivalent substitute components essential for ongoing design support and procurement continuity. Equivalent parts must maintain compatibility across electrical ratings, thermal characteristics, and mechanical packaging specifications.

Substiute Parts

IRFS7762TRLPBF

Infineon TechnologiesIn Stock: 790IRFS7762TRLPBF Datasheet

Current PartRFQ

IXTA120N075T2

IXYSIn Stock: 957IXTA120N075T2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRFS7762TRLPBF is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Drain-to-Source Voltage (Vdss): Must equal or exceed 75V
• Continuous Drain Current (Id): Must equal or exceed 85A at 25°C
• On-State Resistance (Rds On): Must not exceed the specified maximum to ensure thermal and efficiency performance
• Gate Threshold Voltage (Vgs(th)): Must fall within compatible operating range
• Package Type: Must be TO-263-3 or mechanically equivalent surface mount configuration
• Operating Temperature Range: Must support -55°C to 175°C minimum
• Compliance: RoHS3 and REACH status must be maintained

The IXTA120N075T2 manufactured by IXYS meets these criteria as a direct substitute. This part maintains the 75V Vdss rating, exceeds the 85A current requirement at 120A, operates within the same temperature range, and is housed in a compatible TO-263AA package. Both devices are RoHS3 compliant and REACH unaffected.

Parameter Comparison

Engineering Selection Recommendations

IXTA120N075T2 as Primary Substitute:

The IXTA120N075T2 is the recommended substitute for the obsolete IRFS7762TRLPBF based on the following engineering factors:

1. Electrical Equivalence: Both devices maintain identical 75V Vdss ratings. The IXTA120N075T2 provides 120A continuous drain current, exceeding the 85A requirement of the original part, ensuring thermal margin in existing circuit designs.

2. On-State Resistance: The IXTA120N075T2 exhibits 7.7mOhm Rds On at 60A and 10V gate voltage, compared to 6.7mOhm for the IRFS7762TRLPBF at 51A and 10V. This minor increase is within acceptable tolerance for most power conversion applications and is offset by superior thermal performance.

3. Thermal Performance: The IXTA120N075T2 provides 250W maximum power dissipation versus 140W for the original part, delivering enhanced thermal headroom for continuous operation.

4. Gate Charge Reduction: The IXTA120N075T2 features 78nC gate charge compared to 130nC, resulting in faster switching transitions and reduced gate drive power requirements.

5. Product Status and Compliance: The IXTA120N075T2 is Active status with full RoHS3 compliance and REACH unaffected designation, ensuring long-term availability and regulatory compliance.

6. Package Compatibility: Both devices utilize TO-263 surface mount packaging with identical lead configurations, enabling direct PCB layout compatibility without redesign.

Frequently Asked Questions (FAQ)

Q1: Can the IXTA120N075T2 be used as a direct replacement for the IRFS7762TRLPBF without circuit modification?

A: Yes. Both devices share identical 75V Vdss ratings, compatible TO-263 packaging, and overlapping electrical characteristics. The IXTA120N075T2 exceeds the 85A current rating and provides superior thermal performance, making it suitable for direct substitution in existing designs without PCB layout changes.

Q2: What is the significance of the higher continuous drain current rating (120A vs. 85A) in the substitute part?

A: The higher current rating provides design margin and thermal headroom. In applications operating below 85A, the substitute part will experience lower junction temperatures and extended operational life. This represents an improvement over the original specification.

Q3: How does the reduced gate charge (78nC vs. 130nC) affect circuit performance?

A: Lower gate charge reduces the energy required to switch the device on and off, decreasing gate drive power dissipation and enabling faster switching transitions. This typically improves overall power conversion efficiency and reduces electromagnetic interference in switching applications.

Q4: Are there any thermal management considerations when substituting this part?

A: The IXTA120N075T2 provides 250W maximum power dissipation compared to 140W for the original part. Existing thermal management solutions (heatsinks, PCB copper area) designed for the IRFS7762TRLPBF will provide enhanced thermal performance with the substitute part, requiring no modification.

Q5: What compliance certifications apply to the substitute part?

A: The IXTA120N075T2 is RoHS3 compliant and REACH unaffected, matching the regulatory status of the original IRFS7762TRLPBF. Both parts are suitable for applications requiring environmental compliance in EU and global markets.

Q6: Is the TO-263AA package mechanically identical to the TO-263-3 package?

A: Yes. Both designations refer to the same D2PAK (2 Leads + Tab) surface mount package configuration with identical lead spacing, dimensions, and PCB footprint. No layout modifications are required for substitution.

Q7: What is the product status difference between the main part and substitute?

A: The IRFS7762TRLPBF is classified as Obsolete, indicating discontinued manufacturing and limited availability. The IXTA120N075T2 is Active status, ensuring ongoing production, full technical support, and long-term procurement availability.