IR21271S Equivalent & Substitute Parts

Part Overview

The IR21271S is a high-side or low-side gate driver IC manufactured by Infineon Technologies, designed for driving IGBT and N-Channel MOSFET gates in power management applications. The device operates with a supply voltage range of 9V to 20V and features non-inverting logic configuration in an 8-SOIC surface mount package.

The IR21271S is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications utilizing this gate driver topology.

Substiute Parts

IR21271S

Infineon TechnologiesIn Stock: 3790IR21271S Datasheet

Current PartRFQ

IR21271SPBF

Infineon TechnologiesIn Stock: 1522IR21271SPBF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IR21271S is determined by strict equivalence across the following critical parameters:

• Driven Configuration: High-Side or Low-Side capability
• Channel Type: Single channel
• Gate Type: IGBT and N-Channel MOSFET compatibility
• Voltage - Supply: 9V ~ 20V operating range
• Logic Voltage Thresholds: VIL 0.8V, VIH 3V
• Current - Peak Output: 250mA source, 500mA sink
• Input Type: Non-Inverting logic
• High Side Voltage - Max (Bootstrap): 600 V
• Rise / Fall Time: 80ns rise, 40ns fall (typical)
• Operating Temperature: -40°C ~ 150°C (TJ)
• Package / Case: 8-SOIC form factor

The IR21271SPBF represents a direct functional equivalent with identical electrical specifications and package configuration. The primary distinction lies in product status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The IR21271SPBF is the direct substitute for the IR21271S. Both parts share identical electrical specifications and package configuration, ensuring pin-for-pin compatibility and functional equivalence in gate driver applications.

The IR21271SPBF is classified as Active product status, providing assured long-term availability compared to the obsolete IR21271S. The IR21271SPBF carries ROHS3 compliance certification, meeting current environmental and regulatory requirements for new designs and production environments subject to RoHS directives.

The IR21271S is RoHS non-compliant, which may present constraints in applications or supply chains requiring RoHS certification. The IR21271SPBF addresses this requirement while maintaining full electrical and mechanical compatibility.

Moisture sensitivity classification differs between the two parts: IR21271S is MSL 1 (Unlimited), while IR21271SPBF is MSL 2 (1 Year). This distinction affects storage and handling protocols but does not impact functional performance in deployed applications.

Frequently Asked Questions (FAQ)

Q: Are IR21271S and IR21271SPBF pin-for-pin compatible?

A: Yes. Both parts are housed in 8-SOIC packages with identical pinout and electrical specifications. Direct substitution is supported without circuit modification.

Q: What is the primary reason to transition from IR21271S to IR21271SPBF?

A: The IR21271S is obsolete, while IR21271SPBF is active. The IR21271SPBF also provides ROHS3 compliance, addressing regulatory requirements for current manufacturing environments.

Q: Do the electrical specifications differ between these parts?

A: No. Both parts operate identically across all specified parameters: supply voltage (9V ~ 20V), output current (250mA source, 500mA sink), rise/fall times (80ns, 40ns), and bootstrap voltage rating (600 V).

Q: What is the difference in moisture sensitivity between IR21271S and IR21271SPBF?

A: IR21271S is MSL 1 (Unlimited storage), while IR21271SPBF is MSL 2 (1 Year storage limit). MSL 2 requires controlled storage conditions and shorter shelf life management but does not affect in-circuit performance.

Q: Can IR21271SPBF be used in existing designs originally specified for IR21271S?

A: Yes. The IR21271SPBF is a direct functional equivalent with identical electrical and mechanical specifications. No design changes are required for substitution.

Q: What packaging format is available for IR21271SPBF?

A: IR21271SPBF is supplied in Tube packaging, suitable for automated assembly and component handling in production environments.