IR21271 Gate Driver IC - Equivalent & Substitute Parts

Part Overview

The IR21271 is a high-side or low-side gate driver IC designed for IGBT and N-channel MOSFET applications. This non-inverting driver operates from a 9V to 20V supply and delivers peak output currents of 250mA (source) and 500mA (sink), making it suitable for power conversion and motor control circuits. The device is packaged in an 8-DIP through-hole configuration with a maximum bootstrap voltage rating of 600V.

The IR21271 is classified as obsolete, necessitating identification of functionally equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain identical electrical specifications and package compatibility to ensure direct replacement capability.

Substiute Parts

IR21271

Infineon TechnologiesIn Stock: 5279IR21271 Datasheet

Current PartRFQ

IR21271PBF

International RectifierIn Stock: 4000IR21271PBF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IR21271 is determined by strict equivalence across the following critical parameters:

• Supply voltage range: 9V ~ 20V
• Output current capability: 250mA source / 500mA sink minimum
• Bootstrap voltage rating: 600V maximum
• Package configuration: 8-DIP through-hole
• Gate type support: IGBT and N-channel MOSFET
• Input logic: Non-inverting
• Single-channel driver architecture
• Operating temperature range: -40°C ~ 150°C

Only parts meeting all specified parameters qualify as direct substitutes. Deviations in any electrical or mechanical characteristic disqualify a part from this equivalency list.

Parameter Comparison

Engineering Selection Recommendations

The IR21271PBF is the direct substitute for the obsolete IR21271. Both parts are manufactured variants of the same base product number (IR21271) and maintain complete electrical and mechanical equivalence across all specified parameters.

The IR21271PBF carries Active product status, ensuring ongoing availability and manufacturing support. Both parts comply with identical export classifications (ECCN: EAR99) and tariff codes (HTSUS: 8542.39.0001), facilitating seamless integration into existing supply chains and regulatory documentation.

For applications currently using the IR21271, direct replacement with IR21271PBF requires no circuit modifications, PCB layout changes, or firmware adjustments. The through-hole 8-DIP package remains identical, and all electrical characteristics are preserved.

Frequently Asked Questions (FAQ)

Q: Can IR21271PBF replace IR21271 in existing designs?

A: Yes. IR21271PBF is a direct substitute meeting all electrical and mechanical specifications. No design changes are required.

Q: What is the primary reason for substitution?

A: The IR21271 is classified as obsolete. IR21271PBF maintains active product status and ensures continued component availability.

Q: Are there any packaging differences between IR21271 and IR21271PBF?

A: No. Both parts use identical 8-DIP (0.300", 7.62mm) through-hole packaging. PCB footprints and mounting procedures are unchanged.

Q: Do the output current specifications differ?

A: No. Both parts deliver identical peak output currents of 250mA (source) and 500mA (sink).

Q: Are bootstrap voltage ratings equivalent?

A: Yes. Both parts support a maximum bootstrap voltage of 600V, maintaining compatibility with high-voltage gate drive applications.

Q: What gate types are supported by IR21271PBF?

A: IR21271PBF drives IGBT and N-channel MOSFET gates with non-inverting logic configuration, identical to the original IR21271.

Q: Are there compliance or certification differences?

A: No. Both parts share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, ensuring equivalent regulatory treatment.