IR2104STR Half-Bridge Gate Driver IC Equivalent & Substitute Parts

Part Overview

The IR2104STR is a half-bridge gate driver IC manufactured by Infineon Technologies, designed to drive IGBT and N-Channel MOSFET devices in synchronous half-bridge configurations. This component operates with a supply voltage range of 10V to 20V and provides peak output currents of 210mA (source) and 360mA (sink), with a maximum bootstrap voltage rating of 600V.

The IR2104STR is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this gate driver topology.

Substiute Parts

IR2104STR

Infineon TechnologiesIn Stock: 1140IR2104STR Datasheet

Current PartRFQ

IR2104STRPBF

Infineon TechnologiesIn Stock: 64021IR2104STRPBF Datasheet

DirectRFQ

FAN7080MX-GF085

onsemiIn Stock: 5902FAN7080MX-GF085 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IR2104STR are qualified based on the following critical parameters that determine functional compatibility:

Core Compatibility Criteria:

• Driven configuration: Half-bridge topology
• Channel type: Synchronous operation
• Number of drivers: 2 channels
• Gate type: IGBT and N-Channel MOSFET support
• Input type: Non-inverting logic
• Package: 8-SOIC form factor
• High side voltage rating: Minimum 600V bootstrap capability
• Operating temperature range: -40°C to 150°C

Allowable Parameter Variations:

• Supply voltage range may extend below 10V (minimum 5.5V acceptable)
• Logic voltage thresholds (VIL, VIH) may vary within standard CMOS/TTL ranges
• Peak output current (source/sink) may exceed specified values
• Rise/fall time specifications may be faster than the original part
• Moisture sensitivity level and RoHS compliance status may differ

Substitute parts must maintain identical package geometry, pinout compatibility, and functional topology to ensure direct board-level replacement without design modification.

Parameter Comparison

Engineering Selection Recommendations

IR2104STRPBF (Direct Infineon Substitute)

The IR2104STRPBF is the active production equivalent from Infineon Technologies. It maintains identical electrical specifications and package geometry to the obsolete IR2104STR. This part is ROHS3 compliant and carries a 1-year moisture sensitivity rating. Selection of IR2104STRPBF is appropriate for applications requiring direct replacement with minimal supply chain transition and continued support from the original manufacturer.

FAN7080MX-GF085 (onsemi Alternative)

The FAN7080MX-GF085 is an active production half-bridge gate driver from onsemi that meets all core compatibility criteria. This part provides enhanced performance characteristics including lower supply voltage minimum (5.5V vs. 10V), higher peak output currents (300mA source, 600mA sink vs. 210mA/360mA), and faster switching times (40ns/25ns rise/fall vs. 100ns/50ns). The FAN7080MX-GF085 carries AEC-Q100 automotive qualification and ROHS3 compliance. Selection is appropriate for applications where enhanced performance margins and automotive-grade reliability are required, with consideration for the 168-hour moisture sensitivity window.

Frequently Asked Questions (FAQ)

Q: Can IR2104STRPBF be used as a direct replacement for IR2104STR?

A: Yes. The IR2104STRPBF maintains identical electrical specifications, package geometry, and pinout. It is the active production equivalent from Infineon Technologies and requires no design modification for board-level substitution.

Q: What are the key differences between IR2104STRPBF and FAN7080MX-GF085?

A: Both parts are functionally compatible half-bridge gate drivers in 8-SOIC packages. The FAN7080MX-GF085 offers lower minimum supply voltage (5.5V vs. 10V), higher output current capability (300mA/600mA vs. 210mA/360mA), and faster switching performance (40ns/25ns vs. 100ns/50ns). The FAN7080MX-GF085 includes AEC-Q100 automotive qualification. Logic voltage thresholds differ slightly (VIH 2.7V vs. 3V). Moisture sensitivity is higher for the FAN7080MX-GF085 (168 hours vs. 1 year).

Q: Are there package or pinout differences between these parts?

A: No. All three parts use the 8-SOIC package with 0.154" width (3.90mm). Pinout compatibility is maintained across all substitutes, enabling direct board-level replacement without layout modification.

Q: Which substitute should be selected for new designs?

A: Selection depends on application requirements. For direct Infineon continuity, IR2104STRPBF is appropriate. For applications requiring enhanced performance margins, lower supply voltage operation, or automotive qualification, FAN7080MX-GF085 is suitable. Both parts are active production items with established supply availability.

Q: What compliance differences exist between the substitutes?

A: IR2104STR is RoHS non-compliant. Both IR2104STRPBF and FAN7080MX-GF085 are ROHS3 compliant. The FAN7080MX-GF085 carries AEC-Q100 automotive qualification. All parts are REACH unaffected and classified as EAR99 for export control purposes.

Q: Are there thermal or operating temperature considerations?

A: All three parts operate across the identical temperature range of -40°C to 150°C (junction temperature). No thermal derating differences exist between substitutes within this range.