TC4426AMJA Equivalent & Substitute Parts

Part Overview

The TC4426AMJA is a low-side gate driver IC manufactured by Microchip Technology, designed for independent control of N-Channel and P-Channel MOSFETs. This inverting gate driver operates across a 4.5V to 18V supply range with dual independent channels and 1.5A peak output current capability.

The TC4426AMJA is classified as obsolete. Locating equivalent or substitute components is necessary for new designs, production continuity, or system upgrades where this part is no longer readily available through standard distribution channels.

Substiute Parts

TC4426AMJA

Microchip TechnologyIn Stock: 1960TC4426AMJA Datasheet

Current PartRFQ

TC4426AEPA

Microchip TechnologyIn Stock: 7036TC4426AEPA Datasheet

MFR RecommendedRFQ

MAX626MJA/883B

Analog Devices Inc./Maxim IntegratedIn Stock: 864MAX626MJA/883B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TC4426AMJA are selected based on the following critical parameters that determine functional compatibility:

• Driven Configuration: Low-Side operation
• Number of Drivers: 2 independent channels
• Gate Type: N-Channel and P-Channel MOSFET support
• Voltage - Supply: 4.5V ~ 18V range
• Input Type: Inverting logic
• Current - Peak Output: Minimum 1.5A source and sink capability
• Package / Case: 8-pin DIP or CDIP form factor with 0.300" (7.62mm) spacing
• Mounting Type: Through Hole

The substitute parts identified maintain these core electrical and mechanical parameters, ensuring pin-compatible and functionally equivalent operation in existing circuit designs.

Parameter Comparison

Engineering Selection Recommendations

TC4426AEPA is the primary substitute for the TC4426AMJA. Both parts are manufactured by Microchip Technology and share identical electrical specifications. The TC4426AEPA is currently in active production status, ensuring long-term availability. The primary difference is the operating temperature range: the TC4426AEPA operates from -40°C to 85°C, compared to the TC4426AMJA's -55°C to 125°C range. For applications requiring the extended temperature range of the original part, this limitation must be evaluated. The TC4426AEPA maintains ROHS3 compliance, matching the original part's environmental standards.

MAX626MJA/883B is an alternative substitute manufactured by Analog Devices Inc./Maxim Integrated. This part provides enhanced peak output current capability (2A source and sink versus 1.5A), making it suitable for applications requiring higher gate drive current. The MAX626MJA/883B maintains the full -55°C to 125°C operating temperature range of the original TC4426AMJA. However, this part is RoHS non-compliant and carries military-grade qualification under MIL-STD-883, which may introduce cost and lead-time considerations. Selection of this part is appropriate only when the enhanced current capability and extended temperature range justify the compliance trade-off.

Frequently Asked Questions (FAQ)

Q: Can TC4426AEPA be used as a direct replacement for TC4426AMJA?

A: TC4426AEPA is functionally equivalent for most applications. Both parts provide identical electrical performance: 2 independent low-side gate drivers, 4.5V to 18V supply operation, 1.5A peak output current, and inverting logic. The primary consideration is operating temperature range. TC4426AEPA operates from -40°C to 85°C, while TC4426AMJA operates from -55°C to 125°C. If your application operates within the -40°C to 85°C range, TC4426AEPA is a direct substitute. For applications requiring extended temperature operation below -40°C or above 85°C, alternative parts must be evaluated.

Q: What are the package differences between TC4426AMJA and TC4426AEPA?

A: Both parts use 8-pin through-hole packages with 0.300" (7.62mm) spacing. TC4426AMJA uses 8-CDIP (Ceramic DIP) packaging, while TC4426AEPA uses 8-PDIP (Plastic DIP) packaging. These packages are mechanically and electrically compatible on standard DIP sockets and PCB layouts. The primary difference is material composition: ceramic versus plastic. Both maintain identical pin assignments and electrical performance.

Q: When should MAX626MJA/883B be selected over TC4426AEPA?

A: MAX626MJA/883B is selected when higher gate drive current is required. This part provides 2A peak output current (source and sink) compared to 1.5A in both TC4426AMJA and TC4426AEPA. Applications driving large MOSFETs or requiring faster switching transitions benefit from this enhanced current capability. Additionally, MAX626MJA/883B maintains the full -55°C to 125°C temperature range of the original TC4426AMJA. However, this part is RoHS non-compliant and carries military qualification, which may impact procurement and cost.

Q: Are all three parts pin-compatible?

A: Yes. TC4426AMJA, TC4426AEPA, and MAX626MJA/883B all use 8-pin DIP packages with identical pin assignments and 0.300" (7.62mm) spacing. They are mechanically and electrically interchangeable on PCBs designed for standard 8-pin DIP through-hole mounting.

Q: What compliance considerations apply to each substitute?

A: TC4426AMJA and TC4426AEPA are both ROHS3 compliant, meeting environmental regulations for new designs. MAX626MJA/883B is RoHS non-compliant and carries military-grade MIL-STD-883 qualification. If RoHS compliance is a design requirement, MAX626MJA/883B is not suitable. All three parts are REACH unaffected and carry EAR99 ECCN classification.