IR2125STR High-Side Gate Driver IC Equivalent & Substitute Parts

Part Overview

The IR2125STR is a high-side gate driver IC manufactured by Infineon Technologies, designed for driving IGBT and N-Channel MOSFET gates in power management applications. This non-inverting single-channel driver operates with a supply voltage range of 0V to 18V and supports bootstrap voltages up to 500V, making it suitable for half-bridge and full-bridge topologies.

The IR2125STR is classified as obsolete, which necessitates identification of active equivalent parts for new designs and ongoing production requirements. The IR2125STRPBF serves as the direct functional equivalent with identical electrical specifications and improved compliance status.

Substiute Parts

IR2125STR

Infineon TechnologiesIn Stock: 2271IR2125STR Datasheet

Current PartRFQ

IR2125STRPBF

Infineon TechnologiesIn Stock: 35312IR2125STRPBF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IR2125STR is determined by strict equivalence across all electrical and mechanical parameters. The substitute part must maintain identical specifications for:

• Driven configuration (high-side only)
• Single-channel architecture with one driver
• Gate drive capability for IGBT and N-Channel MOSFET devices
• Supply voltage range (0V ~ 18V)
• Logic threshold levels (VIL = 0.8V, VIH = 2.2V)
• Peak output current ratings (source 1.6A, sink 3.3A)
• Non-inverting input logic
• Bootstrap voltage rating (500V maximum)
• Switching speed characteristics (rise/fall times)
• Operating temperature range (-40°C ~ 150°C)
• 16-SOIC surface mount package with identical physical dimensions

The IR2125STRPBF meets all these criteria as a direct equivalent, with the primary distinction being packaging format (Tape & Reel) and improved compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The IR2125STRPBF is the direct substitute for the obsolete IR2125STR. Both parts are electrically and mechanically identical across all functional parameters. The IR2125STRPBF is the preferred selection for new designs and production applications due to its active product status and ROHS3 compliance certification.

For applications requiring RoHS non-compliant components or unlimited moisture sensitivity tolerance, the IR2125STR may be sourced from existing inventory. However, long-term availability of the obsolete part is not guaranteed.

The packaging difference (Tape & Reel for IR2125STRPBF versus bulk for IR2125STR) does not affect electrical performance and is determined by procurement and assembly requirements.

Frequently Asked Questions (FAQ)

Q: Are IR2125STR and IR2125STRPBF electrically interchangeable?

A: Yes. Both parts have identical electrical specifications including supply voltage range, output current ratings, logic thresholds, bootstrap voltage capability, and switching characteristics. They are direct functional equivalents.

Q: What is the difference between IR2125STR and IR2125STRPBF?

A: The primary differences are product status (obsolete versus active), RoHS compliance (non-compliant versus ROHS3 compliant), moisture sensitivity level (MSL 1 versus MSL 3), and packaging format (bulk versus Tape & Reel). Electrical and mechanical specifications are identical.

Q: Can I use IR2125STRPBF in place of IR2125STR in existing designs?

A: Yes. The IR2125STRPBF is a direct substitute with no design modifications required. The 16-SOIC package dimensions are identical, and all electrical parameters match exactly.

Q: What does the "PBF" suffix in IR2125STRPBF indicate?

A: The PBF suffix indicates lead-free and RoHS compliant packaging, with Tape & Reel delivery format.

Q: Is the IR2125STRPBF suitable for high-temperature applications?

A: Yes. The operating temperature range is -40°C to 150°C (junction temperature), identical to the IR2125STR. Both parts support the same thermal specifications.

Q: What is the bootstrap voltage limitation, and does it apply to both parts?

A: Both IR2125STR and IR2125STRPBF support a maximum bootstrap voltage of 500V. This is the maximum voltage that can be applied to the high-side floating supply relative to the source pin.

Q: Are there any compliance or certification differences between the two parts?

A: The IR2125STRPBF is ROHS3 compliant and REACH unaffected. The IR2125STR is RoHS non-compliant but also REACH unaffected. Both have identical ECCN (EAR99) and HTSUS classifications.