IR2104SPBF Half-Bridge Gate Driver IC Equivalent & Substitute Parts

Part Overview

The IR2104SPBF is a half-bridge gate driver IC manufactured by Infineon Technologies, designed for driving IGBT and N-Channel MOSFET configurations in power management applications. This device operates with a supply voltage range of 10V to 20V and features non-inverting input logic with peak output currents of 210mA (source) and 360mA (sink).

The IR2104SPBF carries a "Not For New Designs" product status, indicating that Infineon has discontinued active development for this component. This status necessitates identifying functionally equivalent substitute parts that maintain compatibility with existing circuit designs while offering improved availability or enhanced performance characteristics.

Substiute Parts

IR2104SPBF

Infineon TechnologiesIn Stock: 5000169IR2104SPBF Datasheet

Current PartRFQ

FAN7080MX-GF085

onsemiIn Stock: 5902FAN7080MX-GF085 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IR2104SPBF is determined by strict alignment with the following critical parameters:

Mandatory Compatibility Criteria:

• Driven Configuration: Half-Bridge
• Channel Type: Synchronous
• Number of Drivers: 2
• Gate Type: IGBT, N-Channel MOSFET
• Input Type: Non-Inverting
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• High Side Voltage - Max (Bootstrap): 600V minimum

Allowable Parameter Ranges for Substitution:

• Voltage - Supply: Must encompass or exceed the 10V ~ 20V range
• Logic Voltage - VIL, VIH: Must be compatible with 0.8V, 3V thresholds
• Current - Peak Output (Source, Sink): Must meet or exceed 210mA (source) and 360mA (sink)
• Rise / Fall Time: May be faster than 100ns (rise) and 50ns (fall)
• Operating Temperature: Must support -40°C ~ 150°C range

The FAN7080MX-GF085 manufactured by onsemi qualifies as a direct substitute based on these criteria. It maintains identical half-bridge synchronous configuration, non-inverting input logic, 8-SOIC package geometry, and 600V bootstrap voltage rating. The FAN7080MX-GF085 offers enhanced performance with supply voltage range of 5.5V ~ 20V, higher peak output currents (300mA source, 600mA sink), and faster switching times (40ns rise, 25ns fall).

Parameter Comparison

Engineering Selection Recommendations

The FAN7080MX-GF085 is the qualified substitute for IR2104SPBF applications. Selection rationale is based on the following engineering factors:

Product Status & Support: The IR2104SPBF carries "Not For New Designs" status, indicating end-of-life trajectory. The FAN7080MX-GF085 maintains "Active" product status with ongoing manufacturer support and availability.

Compliance & Certification: Both devices are ROHS3 compliant. The FAN7080MX-GF085 carries AEC-Q100 automotive qualification, providing additional reliability assurance for applications requiring automotive-grade components.

Functional Equivalence: The FAN7080MX-GF085 maintains all critical functional parameters required for direct substitution: identical half-bridge synchronous configuration, non-inverting input logic, 8-SOIC package footprint, and 600V bootstrap voltage rating.

Performance Enhancement: The substitute device offers measurable performance improvements including wider supply voltage range (5.5V ~ 20V vs. 10V ~ 20V), higher peak output currents (300mA/600mA vs. 210mA/360mA), and faster switching times (40ns/25ns vs. 100ns/50ns). These enhancements provide design margin and improved efficiency in power conversion applications.

Packaging & Logistics: Both devices utilize identical 8-SOIC surface-mount packaging, enabling direct PCB layout compatibility without redesign. The FAN7080MX-GF085 is available in Tape & Reel packaging format, supporting automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the FAN7080MX-GF085 be used as a direct replacement for IR2104SPBF in existing designs?

A: Yes. The FAN7080MX-GF085 maintains identical half-bridge synchronous configuration, non-inverting input logic, 8-SOIC package geometry, and 600V bootstrap voltage rating. No circuit redesign is required for substitution.

Q: What are the key differences between IR2104SPBF and FAN7080MX-GF085?

A: The primary differences are: (1) Supply voltage range is wider on FAN7080MX-GF085 (5.5V ~ 20V vs. 10V ~ 20V); (2) Peak output currents are higher on FAN7080MX-GF085 (300mA/600mA vs. 210mA/360mA); (3) Switching times are faster on FAN7080MX-GF085 (40ns/25ns vs. 100ns/50ns); (4) FAN7080MX-GF085 carries AEC-Q100 automotive qualification; (5) FAN7080MX-GF085 maintains Active product status.

Q: Are there any logic voltage compatibility concerns?

A: Logic voltage thresholds are compatible. IR2104SPBF specifies VIL/VIH of 0.8V/3V, while FAN7080MX-GF085 specifies 0.8V/2.7V. The lower VIH threshold on FAN7080MX-GF085 is compatible with standard logic signal levels and does not create substitution barriers.

Q: Does the faster switching time of FAN7080MX-GF085 affect circuit operation?

A: Faster switching times (40ns/25ns vs. 100ns/50ns) represent performance enhancement rather than incompatibility. Faster gate driver switching reduces switching losses and improves power conversion efficiency. No circuit modifications are required to accommodate faster switching characteristics.

Q: Are the packaging formats compatible for PCB assembly?

A: Yes. Both IR2104SPBF and FAN7080MX-GF085 utilize 8-SOIC (0.154", 3.90mm Width) surface-mount packages with identical footprints. PCB layouts require no modification. FAN7080MX-GF085 is supplied in Tape & Reel format, supporting automated pick-and-place assembly.

Q: What is the significance of AEC-Q100 qualification on FAN7080MX-GF085?

A: AEC-Q100 qualification indicates the device meets automotive industry reliability and quality standards. This certification is relevant for applications requiring automotive-grade component assurance, though it does not affect functional compatibility for non-automotive applications.

Q: Can IR2104SPBF be sourced as a new component?

A: IR2104SPBF carries "Not For New Designs" product status from Infineon Technologies, indicating the manufacturer has discontinued active development and support. Existing inventory may be available through component distributors, but long-term availability is not assured. FAN7080MX-GF085 is the recommended substitute for new designs and ongoing production.