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IR4426PBF Low-Side Gate Driver IC Equivalent & Substitute Parts
Part Overview
The IR4426PBF is a low-side gate driver IC manufactured by Infineon Technologies, designed for driving IGBT and N-Channel MOSFET applications. This through-hole 8-DIP package component operates across a 6V to 20V supply voltage range with independent dual-channel configuration and inverting input logic. The IR4426PBF is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute components must maintain functional compatibility across electrical parameters, thermal operating range, and mechanical packaging considerations.
Substiute Parts
Key Parameters
| Parameter | IR4426PBF Specification |
|---|---|
| Manufacturer | Infineon Technologies |
| Package Type | 8-DIP (0.300", 7.62mm) |
| Mounting Type | Through Hole |
| Driven Configuration | Low-Side |
| Number of Drivers | 2 (Independent) |
| Gate Type | IGBT, N-Channel MOSFET |
| Supply Voltage Range | 6V ~ 20V |
| Logic Voltage VIL / VIH | 0.8V / 2.7V |
| Peak Output Current (Source / Sink) | 2.3A / 3.3A |
| Input Type | Inverting |
| Rise / Fall Time (Typical) | 15ns / 10ns |
| Operating Temperature Range | -40°C ~ 150°C (TJ) |
| Product Status | Obsolete |
| RoHS Compliance | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the IR4426PBF are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:
Critical Matching Parameters:
- Driven configuration (Low-Side)
- Channel type (Independent dual-channel)
- Gate type compatibility (IGBT and/or N-Channel MOSFET)
- Supply voltage range (minimum 6V ~ 20V or compatible overlap)
- Input logic type (Inverting)
- Package type (8-DIP through-hole for direct pin compatibility)
- Operating temperature range (minimum -40°C ~ 150°C or compatible overlap)
Secondary Compatibility Parameters:
- Peak output current (source and sink ratings)
- Rise and fall time specifications
- Logic voltage thresholds (VIL, VIH)
Substitutes are grouped into two categories: direct package replacements (8-DIP through-hole) and alternative package options (8-SOIC surface mount). Direct package replacements enable board-level compatibility without layout modifications. Alternative packages require PCB redesign but offer active product status and extended availability.
Parameter Comparison
| Part Number | Manufacturer | Package | Mounting | Supply Voltage | Peak Output (Source/Sink) | Rise/Fall Time (ns) | Temp Range | Status |
|---|---|---|---|---|---|---|---|---|
| IR4426PBF | Infineon | 8-DIP | Through Hole | 6V ~ 20V | 2.3A / 3.3A | 15 / 10 | -40°C ~ 150°C | Obsolete |
| IR4426STRPBF | Infineon | 8-SOIC | Surface Mount | 6V ~ 20V | 2.3A / 3.3A | 15 / 10 | -40°C ~ 150°C | Active |
| MAX4426CPA+ | Analog Devices/Maxim | 8-DIP | Through Hole | 4.5V ~ 18V | 1.5A / 1.5A | 20 / 20 | 0°C ~ 70°C | Active |
| MAX4426EPA+ | Analog Devices/Maxim | 8-DIP | Through Hole | 4.5V ~ 18V | 1.5A / 1.5A | 20 / 20 | -40°C ~ 85°C | Active |
| MAX626CPA+ | Analog Devices/Maxim | 8-DIP | Through Hole | 4.5V ~ 18V | 2A / 2A | 25 / 20 | 0°C ~ 70°C | Active |
| MAX626EPA+ | Analog Devices/Maxim | 8-DIP | Through Hole | 4.5V ~ 18V | 2A / 2A | 25 / 20 | -40°C ~ 85°C | Active |
| MCP1403-E/P | Microchip Technology | 8-DIP | Through Hole | 4.5V ~ 18V | 4.5A / 4.5A | 15 / 18 | -40°C ~ 150°C | Active |
| MIC4423YN | Microchip Technology | 8-DIP | Through Hole | 4.5V ~ 18V | 3A / 3A | 28 / 32 | -40°C ~ 150°C | Active |
| MIC4423ZN | Microchip Technology | 8-DIP | Through Hole | 4.5V ~ 18V | 3A / 3A | 28 / 32 | 0°C ~ 150°C | Active |
| MIC4426YN | Microchip Technology | 8-DIP | Through Hole | 4.5V ~ 18V | 1.5A / 1.5A | 20 / 29 | -40°C ~ 150°C | Active |
| MIC4426ZN | Microchip Technology | 8-DIP | Through Hole | 4.5V ~ 18V | 1.5A / 1.5A | 20 / 29 | 0°C ~ 150°C | Active |
Engineering Selection Recommendations
Direct Package Replacement (8-DIP Through-Hole):
For applications requiring immediate board-level compatibility without PCB redesign, the following active substitutes maintain the 8-DIP through-hole package format:
MCP1403-E/P offers the closest electrical match to IR4426PBF specifications, with identical rise/fall time performance (15ns/18ns), extended temperature range (-40°C to 150°C), and higher peak output current capability (4.5A/4.5A). This part is ROHS3 compliant and carries active product status with full inventory availability.
MIC4423YN and MIC4423ZN provide 3A/3A peak output current with -40°C to 150°C operating range (YN variant) or 0°C to 150°C (ZN variant). Both maintain ROHS3 compliance and active status. The YN variant is preferred for applications requiring the full -40°C lower temperature limit.
MIC4426YN and MIC4426ZN deliver 1.5A/1.5A output current with temperature ranges of -40°C to 150°C (YN) or 0°C to 150°C (ZN). These are suitable for lower-current gate drive applications.
MAX4426EPA+ and MAX626EPA+ offer active status with extended temperature ranges (-40°C to 85°C), though the upper temperature limit of 85°C is below the IR4426PBF specification of 150°C. These are appropriate only for applications with maximum junction temperatures not exceeding 85°C.
Alternative Package Option (8-SOIC Surface Mount):
IR4426STRPBF is the direct electrical equivalent manufactured by Infineon, maintaining identical specifications (6V-20V supply, 2.3A/3.3A output, 15ns/10ns timing) with active product status. This surface-mount variant requires PCB layout modification but ensures functional equivalence and manufacturer continuity.
Compliance and Certification:
All recommended substitutes are ROHS3 compliant and carry REACH Unaffected status, matching the IR4426PBF compliance profile. Moisture Sensitivity Level 1 (unlimited shelf life) is maintained across all recommended parts.
Frequently Asked Questions (FAQ)
Q: Can I use MAX4426CPA+ as a direct replacement for IR4426PBF?
A: MAX4426CPA+ is pin-compatible in 8-DIP package format and maintains low-side gate driver functionality with inverting input logic. However, the operating temperature range is limited to 0°C to 70°C, compared to IR4426PBF's -40°C to 150°C specification. This part is suitable only for applications with maximum junction temperatures not exceeding 70°C. Additionally, peak output current is reduced to 1.5A/1.5A versus the original 2.3A/3.3A.
Q: What is the difference between MIC4423YN and MIC4423ZN?
A: Both parts are functionally identical with 3A/3A peak output current and 8-DIP through-hole packaging. The primary difference is operating temperature range: MIC4423YN operates from -40°C to 150°C, while MIC4423ZN operates from 0°C to 150°C. Select MIC4423YN for applications requiring full -40°C lower temperature operation.
Q: Why would I choose IR4426STRPBF over through-hole alternatives?
A: IR4426STRPBF is manufactured by Infineon and provides exact electrical equivalence to IR4426PBF with identical specifications (6V-20V supply, 2.3A/3.3A output, 15ns/10ns timing, -40°C to 150°C range). The 8-SOIC surface-mount package requires PCB redesign but offers active product status and manufacturer continuity. This is the preferred choice when PCB layout modification is feasible.
Q: Is MCP1403-E/P suitable for high-current gate drive applications?
A: Yes. MCP1403-E/P provides 4.5A/4.5A peak output current, exceeding the IR4426PBF specification of 2.3A/3.3A. It maintains the full -40°C to 150°C operating range, 15ns rise time, and 8-DIP through-hole package. This part is appropriate for applications requiring higher gate drive current capability.
Q: What are the supply voltage compatibility considerations?
A: IR4426PBF operates across 6V to 20V supply range. Most active substitutes (MAX series, MIC series, MCP1403) operate across 4.5V to 18V, which overlaps the original specification. Designs operating at the 6V to 18V intersection are compatible with all recommended substitutes. Designs requiring operation below 4.5V or above 18V are limited to IR4426STRPBF or MCP1403-E/P variants.
Q: Can I use these parts interchangeably in existing designs?
A: Pin compatibility exists for all 8-DIP through-hole packages listed. However, electrical parameter differences (peak output current, rise/fall times, temperature range) must be verified against application requirements. Designs operating within the most restrictive substitute specifications (such as MAX4426CPA+ at 0°C to 70°C) require thermal analysis to confirm suitability. Surface-mount alternatives (IR4426STRPBF) require PCB layout modification and cannot be used as direct drop-in replacements.
Q: Are all substitutes ROHS3 compliant?
A: Yes. All recommended substitute parts carry ROHS3 compliance certification, matching the IR4426PBF compliance status. All parts are REACH Unaffected and carry Moisture Sensitivity Level 1 (unlimited shelf life).
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