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IXDF402SIA Low-Side Gate Driver IC Equivalent & Substitute Parts
Part Overview
The IXDF402SIA is a low-side gate driver IC manufactured by IXYS, designed for driving IGBT and MOSFET devices in power management applications. This 8-SOIC package device features dual independent channels with inverting and non-inverting input configurations, supporting supply voltages from 4.5V to 35V and peak output currents of 2A source and sink.
The IXDF402SIA is classified as obsolete. Identifying functionally equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this gate driver topology.
Substiute Parts
Key Parameters
| Parameter | IXDF402SIA |
|---|---|
| Manufacturer | IXYS |
| Product Status | Obsolete |
| Package Type | 8-SOIC (0.154", 3.90mm Width) |
| Driven Configuration | Low-Side |
| Number of Drivers | 2 (Independent Channels) |
| Gate Type | IGBT, N-Channel, P-Channel MOSFET |
| Supply Voltage Range | 4.5V ~ 35V |
| Logic Voltage VIL / VIH | 0.8V / 3V |
| Peak Output Current (Source / Sink) | 2A / 2A |
| Input Type | Inverting, Non-Inverting |
| Rise / Fall Time (Typical) | 8ns / 8ns |
| Operating Temperature Range | -55°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount |
| Moisture Sensitivity Level | MSL 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the IXDF402SIA is determined by the following critical parameters:
Primary Compatibility Criteria:
- Package type: 8-SOIC form factor (0.154", 3.90mm Width)
- Driven configuration: Low-side gate driver topology
- Channel configuration: Dual independent channels
- Input type: Inverting and non-inverting capability
- Gate type compatibility: IGBT and MOSFET support
Electrical Performance Criteria:
- Supply voltage range must encompass or match 4.5V ~ 35V
- Logic voltage thresholds (VIL, VIH) must be compatible with 0.8V / 3V
- Peak output current capability (source and sink) must meet or exceed 2A / 2A
- Rise and fall time specifications must support the application timing requirements
- Operating temperature range must cover -55°C ~ 150°C or be suitable for the intended thermal environment
Regulatory and Compliance Criteria:
- RoHS compliance status
- REACH compliance status
- Moisture sensitivity level (MSL 1 preferred for unlimited shelf life)
Substitute parts are grouped into two categories: Direct Replacements (IXYS IXDF602SIA and IXDF604 series variants) offering enhanced performance within the same manufacturer ecosystem, and Cross-Manufacturer Alternatives (Analog Devices MAX628 and Microchip MIC4125 series) providing functional equivalence with different electrical characteristics and operating ranges.
Parameter Comparison
| Part Number | Manufacturer | Status | Supply Voltage | Peak Output Current (Source/Sink) | Rise/Fall Time (ns) | Operating Temp (°C) | Package | RoHS |
|---|---|---|---|---|---|---|---|---|
| IXDF402SIA | IXYS | Obsolete | 4.5V ~ 35V | 2A / 2A | 8 / 8 | -55 ~ 150 (TJ) | 8-SOIC | Not Specified |
| IXDF602SIA | IXYS | Active | 4.5V ~ 35V | 2A / 2A | 7.5 / 6.5 | -55 ~ 150 (TJ) | 8-SOIC | ROHS3 |
| IXDF604SI | IXYS | Active | 4.5V ~ 35V | 4A / 4A | 9 / 8 | -40 ~ 125 (TA) | 8-SOIC-EP | ROHS3 |
| IXDF604SIA | IXYS | Active | 4.5V ~ 35V | 4A / 4A | 9 / 8 | -40 ~ 125 (TA) | 8-SOIC | ROHS3 |
| IXDF604SIATR | Littelfuse | Active | 4.5V ~ 35V | 4A / 4A | 9 / 8 | -40 ~ 125 (TA) | 8-SOIC | ROHS3 |
| IXDF604SITR | IXYS | Active | 4.5V ~ 35V | 4A / 4A | 9 / 8 | -40 ~ 125 (TA) | 8-SOIC-EP | ROHS3 |
| MAX628CSA+ | Analog Devices | Active | 4.5V ~ 18V | 2A / 2A | 25 / 20 | 0 ~ 70 (TA) | 8-SOIC | ROHS3 |
| MAX628CSA+T | Analog Devices | Active | 4.5V ~ 18V | 2A / 2A | 25 / 20 | 0 ~ 70 (TA) | 8-SOIC | ROHS3 |
| MAX628ESA+ | Analog Devices | Active | 4.5V ~ 18V | 2A / 2A | 25 / 20 | -40 ~ 85 (TA) | 8-SOIC | ROHS3 |
| MAX628ESA+T | Analog Devices | Active | 4.5V ~ 18V | 2A / 2A | 25 / 20 | -40 ~ 85 (TA) | 8-SOIC | ROHS3 |
| MIC4125YME | Microchip | Active | 4.5V ~ 20V | 3A / 3A | 11 / 11 | -40 ~ 125 (TJ) | 8-SOIC-EP | ROHS3 |
Engineering Selection Recommendations
IXYS IXDF602SIA is the primary direct replacement for the obsolete IXDF402SIA. This part maintains identical supply voltage range (4.5V ~ 35V), equivalent output current capability (2A / 2A), and matching temperature range (-55°C ~ 150°C TJ). The IXDF602SIA is active in production status with ROHS3 compliance, ensuring long-term availability and regulatory alignment. Rise and fall times are improved (7.5ns / 6.5ns versus 8ns / 8ns), providing enhanced switching performance.
IXYS IXDF604 Series (IXDF604SI, IXDF604SIA, IXDF604SIATR, IXDF604SITR) offers enhanced output current capability (4A / 4A) while maintaining the 4.5V ~ 35V supply voltage range. These parts are suitable for applications requiring higher gate drive current. Operating temperature range is reduced to -40°C ~ 125°C (TA), which may limit use in extreme low-temperature environments. All variants carry ROHS3 compliance and active production status. The IXDF604SIATR variant (Littelfuse) and IXDF604SITR variant (IXYS) are available in tape and reel packaging for automated assembly.
Analog Devices MAX628 Series (MAX628CSA+, MAX628CSA+T, MAX628ESA+, MAX628ESA+T) provides functional equivalence with identical 2A / 2A output current matching the original IXDF402SIA. However, the supply voltage range is limited to 4.5V ~ 18V, restricting use in applications requiring voltages above 18V. Rise and fall times are significantly slower (25ns / 20ns), which may impact switching frequency performance. Temperature variants are available: commercial grade (0°C ~ 70°C TA) and extended grade (-40°C ~ 85°C TA). All variants are ROHS3 compliant and in active production.
Microchip MIC4125YME offers intermediate output current capability (3A / 3A) with supply voltage range of 4.5V ~ 20V. Operating temperature range extends to -40°C ~ 125°C (TJ), supporting extended thermal environments. Rise and fall times are 11ns / 11ns. This part is ROHS3 compliant and in active production status. The 8-SOIC-EP package includes an exposed pad for enhanced thermal management.
Selection should prioritize the IXDF602SIA for direct replacement in applications operating within the original specifications. The IXDF604 series is recommended when higher output current is required. MAX628 and MIC4125 alternatives are suitable only for applications with supply voltages not exceeding 18V and 20V respectively.
Frequently Asked Questions (FAQ)
Q: Can the IXDF602SIA directly replace the obsolete IXDF402SIA without circuit modifications?
A: Yes. The IXDF602SIA maintains identical electrical specifications for supply voltage (4.5V ~ 35V), output current (2A / 2A), input logic levels (0.8V / 3V), and operating temperature range (-55°C ~ 150°C TJ). The 8-SOIC package pinout and functional configuration are compatible. No circuit modifications are required.
Q: What is the key difference between IXDF604SI and IXDF604SIA?
A: IXDF604SI uses an 8-SOIC-EP package (exposed pad for thermal management), while IXDF604SIA uses standard 8-SOIC packaging. Both provide identical electrical performance (4A / 4A output current, 4.5V ~ 35V supply). Package selection depends on thermal requirements and PCB layout capabilities.
Q: Why is the MAX628 series limited to 18V supply voltage?
A: The MAX628 series is specified for 4.5V ~ 18V operation. Applications requiring supply voltages above 18V must use IXYS IXDF602SIA or IXDF604 series, which support up to 35V.
Q: Can I use MIC4125YME in place of IXDF402SIA for high-temperature applications?
A: The MIC4125YME supports -40°C ~ 125°C (TJ), which does not cover the original IXDF402SIA range of -55°C ~ 150°C (TJ). For applications requiring operation below -40°C or above 125°C, the IXDF602SIA or IXDF604 series must be used.
Q: What does the "TR" suffix indicate in part numbers like IXDF604SIATR?
A: The "TR" suffix indicates tape and reel packaging, suitable for automated pick-and-place assembly. Tube packaging (without TR suffix) is used for manual handling and lower-volume applications. Electrical specifications are identical between packaging formats.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All active substitute parts listed (IXDF602SIA, IXDF604 series, MAX628 series, MIC4125YME) carry ROHS3 compliance certification. The original IXDF402SIA does not specify RoHS status due to its obsolete classification.
Q: Which substitute offers the fastest switching performance?
A: The IXDF602SIA provides the fastest rise and fall times (7.5ns / 6.5ns) among direct replacements. The IXDF604 series offers 9ns / 8ns. The MAX628 series is significantly slower at 25ns / 20ns, and MIC4125YME operates at 11ns / 11ns.
Q: Can I use IXDF604 series as a drop-in replacement if my application only requires 2A output current?
A: Yes. The IXDF604 series (4A / 4A capability) is backward compatible with applications designed for 2A / 2A output current. The higher current rating provides design margin and does not create compatibility issues. However, verify that the operating temperature range (-40°C ~ 125°C TA) meets your application requirements, as it is narrower than the original IXDF402SIA (-55°C ~ 150°C TJ).
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