IR2108STR Half-Bridge Gate Driver IC Equivalent & Substitute Parts

Part Overview

The IR2108STR is a half-bridge gate driver IC manufactured by Infineon Technologies, designed to drive IGBT and N-Channel MOSFET devices in half-bridge configurations. This component operates with independent channels and provides non-inverting logic control with a supply voltage range of 10V to 20V.

The IR2108STR is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this gate driver topology.

Substiute Parts

IR2108STR

Infineon TechnologiesIn Stock: 656685IR2108STR Datasheet

Current PartRFQ

IR2108STRPBF

Infineon TechnologiesIn Stock: 42966IR2108STRPBF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IR2108STR is determined by strict equivalence across the following critical parameters:

• Driven Configuration: Half-Bridge topology
• Number of Drivers: 2 independent channels
• Gate Type: IGBT and N-Channel MOSFET compatibility
• Voltage - Supply: 10V ~ 20V operating range
• Current - Peak Output: 200mA source, 350mA sink capability
• High Side Voltage - Max (Bootstrap): 600V rating
• Rise / Fall Time: 150ns rise, 50ns fall (typical)
• Operating Temperature: -40°C ~ 150°C junction temperature range
• Package / Case: 8-SOIC form factor with 3.90mm width
• Mounting Type: Surface Mount

The IR2108STRPBF is identified as a direct substitute based on identical electrical specifications and mechanical compatibility across all parameters listed above.

Parameter Comparison

Engineering Selection Recommendations

The IR2108STRPBF is the direct substitute for the IR2108STR. Both parts share identical electrical and mechanical specifications, ensuring pin-for-pin and functional compatibility.

The primary distinction between these parts is product status and compliance certification. The IR2108STR is obsolete, while the IR2108STRPBF maintains active product status from Infineon Technologies. The IR2108STRPBF is ROHS3 compliant, whereas the IR2108STR is RoHS non-compliant. For new designs or ongoing production requiring regulatory compliance, the IR2108STRPBF is the appropriate selection.

The packaging difference (bulk versus Tape & Reel) reflects standard supply chain practices and does not affect electrical or mechanical performance. The Moisture Sensitivity Level (MSL) difference (1 versus 2) indicates different storage and handling requirements but does not impact functional equivalence.

Frequently Asked Questions (FAQ)

Q: Can the IR2108STRPBF be used as a direct replacement for the IR2108STR?

A: Yes. The IR2108STRPBF is electrically and mechanically identical to the IR2108STR. All electrical parameters, including supply voltage, output current, timing characteristics, and operating temperature range, are equivalent. The 8-SOIC package dimensions and pin configuration are identical, enabling direct PCB substitution.

Q: What is the difference between IR2108STR and IR2108STRPBF?

A: The primary differences are product status, RoHS compliance, and packaging format. The IR2108STR is obsolete and RoHS non-compliant, while the IR2108STRPBF is active and ROHS3 compliant. The IR2108STRPBF is supplied in Tape & Reel packaging, whereas the IR2108STR is supplied in bulk. Functionally and electrically, both parts are identical.

Q: Are there any compatibility concerns when substituting the IR2108STRPBF for the IR2108STR?

A: No compatibility concerns exist. Both parts operate identically in half-bridge gate driver applications. PCB layout, signal routing, and component selection remain unchanged. The 8-SOIC package footprint is identical for both parts.

Q: Why should I choose the IR2108STRPBF over the IR2108STR?

A: The IR2108STRPBF is recommended for new designs and ongoing production because it is an active product with ROHS3 compliance certification. The IR2108STR is obsolete and may face supply constraints. Selecting the IR2108STRPBF ensures long-term availability and regulatory compliance.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by equivalence in driven configuration (half-bridge), number of drivers (2), gate type (IGBT and N-Channel MOSFET), supply voltage range (10V ~ 20V), peak output current (200mA source, 350mA sink), bootstrap voltage rating (600V), timing characteristics (150ns rise, 50ns fall), operating temperature range (-40°C ~ 150°C), and package form factor (8-SOIC). All these parameters must match for direct substitution.

Q: Does the Moisture Sensitivity Level (MSL) difference affect substitution?

A: The MSL difference (1 versus 2) reflects different storage and handling requirements but does not affect electrical performance or functional compatibility. MSL 2 (1 Year) requires standard moisture control during storage and handling. This is a supply chain consideration, not a functional limitation.