IR2108S Half-Bridge Gate Driver IC Equivalent & Substitute Parts

Part Overview

The IR2108S is a half-bridge gate driver IC manufactured by Infineon Technologies, designed for driving IGBT and N-Channel MOSFET configurations in power management applications. This component operates with a supply voltage range of 10V to 20V and provides independent dual-channel gate driving with non-inverting input logic.

The IR2108S 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 of systems utilizing this gate driver architecture.

Substiute Parts

IR2108S

Infineon TechnologiesIn Stock: 4612IR2108S Datasheet

Current PartRFQ

IR2108SPBF

Infineon TechnologiesIn Stock: 4161IR2108SPBF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IR2108S is determined by strict equivalence across the following critical parameters:

• Driven Configuration: Half-Bridge topology
• Number of Drivers: Dual independent channels
• Gate Type Compatibility: IGBT and N-Channel MOSFET support
• Supply Voltage Range: 10V ~ 20V operation
• Peak Output Current: Source 200mA, Sink 350mA minimum
• Bootstrap Voltage Rating: 600V maximum
• Package Type: 8-SOIC form factor
• Input Logic: Non-inverting configuration
• Operating Temperature Range: -40°C ~ 150°C

The IR2108SPBF qualifies as a direct substitute based on identical electrical specifications and mechanical compatibility across all parameters listed above.

Parameter Comparison

Engineering Selection Recommendations

The IR2108SPBF is a direct functional equivalent to the IR2108S with identical electrical and mechanical specifications. The primary distinction is regulatory compliance status: IR2108SPBF carries ROHS3 compliance, whereas IR2108S is RoHS non-compliant. For applications subject to RoHS regulations or environmental compliance requirements, IR2108SPBF is the appropriate selection.

Both parts are classified as obsolete products. Selection between these parts should be based on compliance requirements and moisture sensitivity handling procedures. IR2108SPBF requires controlled storage conditions (1-year MSL at 30°C/60% RH), while IR2108S has unlimited shelf life under standard conditions.

Frequently Asked Questions (FAQ)

Q: Can IR2108SPBF replace IR2108S in existing designs?

A: Yes. IR2108SPBF is electrically and mechanically identical to IR2108S. Both parts feature the same half-bridge gate driver topology, dual independent channels, 10V–20V supply range, 200mA/350mA peak output current, and 8-SOIC package. Direct substitution is possible without circuit modification.

Q: What is the difference between IR2108S and IR2108SPBF?

A: The primary differences are RoHS compliance status and moisture sensitivity level. IR2108SPBF is ROHS3 compliant with MSL 2 (1-year shelf life at 30°C/60% RH). IR2108S is RoHS non-compliant with MSL 1 (unlimited shelf life). Electrical performance is identical.

Q: Are there any package or pinout differences?

A: No. Both parts use the 8-SOIC package with identical 0.154" width (3.90mm). Pinout and mechanical dimensions are identical, enabling direct PCB compatibility.

Q: Which part should I select for new designs?

A: IR2108SPBF is recommended for new designs due to ROHS3 compliance. However, both parts are obsolete, and long-term availability cannot be guaranteed. Evaluation of alternative gate driver solutions from current product lines is advisable for new development.

Q: What are the storage requirements for these parts?

A: IR2108S has unlimited shelf life under standard conditions (MSL 1). IR2108SPBF requires controlled storage at ≤30°C and ≤60% relative humidity for a maximum of 1 year (MSL 2). Proper moisture barrier packaging is required for IR2108SPBF.