IRF6892STRPBF Equivalent & Substitute Parts

Part Overview

The IRF6892STRPBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 25V drain-to-source voltage with 28A continuous drain current at 25°C ambient temperature. This device features the DIRECTFET™ S3C package and operates across a temperature range of -40°C to 150°C. The IRF6892STRPBF is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement requirements.

Substiute Parts

IRF6892STRPBF

Infineon TechnologiesIn Stock: 34021IRF6892STRPBF Datasheet

Current PartRFQ

STD35NF06LT4

STMicroelectronicsIn Stock: 2840STD35NF06LT4 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRF6892STRPBF requires evaluation against the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Drain-to-Source Voltage (Vdss) must equal or exceed 25V
• Continuous Drain Current (Id) must meet or exceed 28A at 25°C ambient
• On-Resistance (Rds On) characteristics must support equivalent power dissipation profiles
• Gate threshold voltage (Vgs th) and gate charge (Qg) must remain within compatible ranges for existing gate drive circuits
• Maximum gate voltage (Vgs) rating must accommodate ±16V drive signals

Mechanical and Compliance Criteria:

• Surface mount package configuration required
• RoHS3 compliance mandatory
• Moisture sensitivity level (MSL) of 1 (Unlimited) preferred
• Operating temperature range must support -40°C to 150°C minimum

The STD35NF06LT4 from STMicroelectronics is identified as a manufacturer-recommended substitute. While this device exhibits higher Vdss (60V) and Id (35A) ratings, it maintains electrical compatibility through equivalent gate drive characteristics and superior thermal performance, enabling direct functional replacement in applications where the IRF6892STRPBF is specified.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The STD35NF06LT4 is suitable as a functional substitute for the IRF6892STRPBF based on the following factors:

1. Electrical Compatibility: The STD35NF06LT4 exceeds the minimum electrical requirements of the IRF6892STRPBF. The higher Vdss rating (60V vs. 25V) and increased Id rating (35A vs. 28A) provide design margin without introducing incompatibility. Gate drive characteristics remain compatible with existing circuits designed for the IRF6892STRPBF.

2. Product Status: The STD35NF06LT4 maintains active product status with established supply chain availability, addressing the obsolescence of the IRF6892STRPBF.

3. Compliance Certification: Both devices maintain ROHS3 compliance and MSL 1 (Unlimited) ratings, ensuring regulatory and environmental compatibility.

4. Thermal Performance: The STD35NF06LT4 provides superior thermal dissipation capability (80W Tc vs. 42W Tc), enabling reliable operation in thermally constrained applications.

5. Package Consideration: The STD35NF06LT4 utilizes DPAK (TO-252-3) packaging, which differs from the DIRECTFET™ S3C package of the IRF6892STRPBF. PCB layout modifications are required to accommodate the different package footprint and thermal characteristics.

Frequently Asked Questions (FAQ)

Q: Can the STD35NF06LT4 directly replace the IRF6892STRPBF without circuit modifications?

A: Electrical substitution is feasible without circuit modifications to gate drive or signal conditioning. However, PCB layout changes are mandatory due to package differences (DPAK vs. DIRECTFET™ S3C). Thermal management design may require evaluation based on application power dissipation profiles.

Q: What are the key electrical differences between these devices?

A: The STD35NF06LT4 features higher Vdss (60V vs. 25V) and Id (35A vs. 28A) ratings. On-resistance values differ due to different measurement conditions (17mOhm @ 17.5A for STD35NF06LT4 vs. 1.7mOhm @ 28A for IRF6892STRPBF). Gate charge is slightly higher (33nC vs. 25nC), requiring minimal adjustment to gate drive timing if applicable.

Q: Are there package compatibility concerns?

A: Yes. The IRF6892STRPBF uses DIRECTFET™ S3C surface mount package, while the STD35NF06LT4 uses DPAK (TO-252-3) surface mount package. These packages have different footprints, lead configurations, and thermal characteristics. PCB redesign is required for physical and thermal compatibility.

Q: Do both devices meet the same compliance standards?

A: Yes. Both the IRF6892STRPBF and STD35NF06LT4 are ROHS3 compliant with MSL 1 (Unlimited) ratings. Both are classified as EAR99 under export control and share identical HTSUS codes (8541.29.0095).

Q: What is the operating temperature range difference?

A: The IRF6892STRPBF operates from -40°C to 150°C (TJ), while the STD35NF06LT4 operates from -55°C to 175°C (TJ). The STD35NF06LT4 provides extended low-temperature capability and higher maximum junction temperature, supporting broader environmental applications.

Q: How do gate charge characteristics affect substitution?

A: Gate charge (Qg) is 25nC for IRF6892STRPBF and 33nC for STD35NF06LT4. This 8nC difference may require minor adjustment to gate drive circuit timing or current capacity if the original design operates at the limits of gate drive capability. For most applications, this difference is negligible.