The SMBJ26A from Littelfuse (or equivalent brands) is a high-power Transient Voltage Suppression (TVS) diode designed to protect sensitive electronic circuits from voltage spikes, surges, and electrostatic discharge (ESD).
Built for robust performance, this unidirectional TVS diode provides fast response time and high surge capability, making it ideal for protecting power rails, automotive electronics, and industrial systems. Its SMB (DO-214AA) package allows efficient heat dissipation and reliable operation under high transient conditions.
Key Features
Protection Capability-
Peak pulse power: 600W (10/1000 µs waveform)
Fast response time (picoseconds)
Excellent clamping capability
Electrical Characteristics-
Reverse standoff voltage (VRWM): 26V
Breakdown voltage: ~28.9V – 31.9V
Clamping voltage: ~42.1V (typical)
Unidirectional configuration
Performance-
Low leakage current
High reliability under repeated surges
Designed for transient suppression
Mechanical-
Package: SMB (DO-214AA
Surface Mount Device (SMD)
Good thermal performance
Package Information-
Type: TVS Diode
Package: SMB / DO-214AA
Mounting Type: Surface Mount (SMD)
Package Contents-
1 × SMBJ26A TVS Diode
Applications-
Power supply protection (12V / 24V systems)
Automotive electronics
DC-DC converter input protection
Industrial control systems
Communication equipment
Flight controllers and embedded systems
Part Number Breakdown (Reference)-
SMBJ → Package series (600W TVS)
26 → 26V standoff voltage
A → Unidirectional type
Usage Note-
Place TVS diode close to input connector for best protection
Ensure correct polarity (for unidirectional type)
Datasheet: –SMBJ26A
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