August 14, 2025
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In today's automotive electronics landscape, reliable transient voltage suppression (TVS) is critical. The SA110CAHE3/54 from Vishay General Semiconductor meets this demand with AEC-Q101 certification, 500W peak power dissipation, and bidirectional 110V protection. This article explores its key parameters, automotive applications, and why it outperforms alternatives in harsh environments. Read on to discover how this component can enhance your circuit protection strategy.
The SA110CAHE3/54 is a bidirectional TVS diode from Vishay's TransZorb series, designed for automotive-grade ESD and surge protection. Its axial DO-15 package and robust specifications make it ideal for protecting sensitive electronics in 12V/24V vehicle systems.
| Parameter | Value | Standard |
|---|---|---|
| Working Voltage (VWM) | 110V | AEC-Q101 |
| Peak Pulse Power (Pppm) | 500W (8/20μs waveform) | IEC 61000-4-5 |
| Clamping Voltage (VC) | 177V at 2.8A | MIL-STD-750 |
| Breakdown Voltage (VBR) | 122V (min) | JESD22-A114 |
| Operating Temperature | -55°C to +175°C | AEC-Q101 Grade 1 |
| Package | DO-204AC (DO-15) | JEDEC |
When choosing the SA110CAHE3/54 for your design:
Voltage Matching: Select based on system's maximum operating voltage (110V VWM suits most 12V/24V automotive systems)
Power Requirements: 500W dissipation handles typical ISO 7637-2 pulses
Environmental Factors: -55°C to +175°C range exceeds automotive under-hood requirements
Layout Considerations: Axial package allows flexible PCB or wire mounting
| Model | VWM | Pppm | Package | Key Difference |
|---|---|---|---|---|
| SA110CAHE3/54 | 110V | 500W | DO-15 | AEC-Q101 certified |
| P6KE120A | 120V | 600W | DO-204AC | Unidirectional only |
| SMBJ110CA | 110V | 600W | SMB | Surface-mount alternative |
Why choose SA110CAHE3/54? Its bidirectional protection and automotive qualification make it superior for vehicle systems where polarity reversals may occur.
Protects engine control units from load dump transients (per ISO 16750-2). Installed at power input lines with 0.5Ω series resistor.
Used in pairs to safeguard CAN-H/CAN-L lines from ESD events up to ±15kV (IEC 61000-4-2).
Defends EV charging interfaces against voltage spikes during connector mating.
The global automotive TVS diode market is projected to grow at 6.8% CAGR (2023-2030, MarketsandMarkets), driven by:
Increasing electronics content in vehicles (200+ TVS diodes in premium cars)
Stringent EMC regulations (UNECE R10, CISPR 25)
Adoption of 48V mild-hybrid systems requiring higher voltage protection
Higher Voltage Ratings: Demand for 200V+ TVS diodes with EV 800V architectures
Integrated Solutions Combining TVS with EMI filters in single packages
Miniaturization: Chip-scale packages for ADAS sensor protection
Yes. Its 110V working voltage provides sufficient margin for 24V nominal systems (typically 36V max during transients).
It safeguards against both positive and negative transients - crucial for scenarios like jump-start polarity reversal.
<1ps (picosecond) response to ESD events, per IEC 61000-4-2 testing.
Yes, one SA110CAHE3/54 can replace back-to-back unidirectional diodes, saving space and BOM cost.
Vishay's testing shows >100,000 surge cycles at 500W with <10% parameter drift.
The SA110CAHE3/54 delivers robust, automotive-grade transient protection with its 500W dissipation, wide temperature range, and bidirectional operation. As vehicles incorporate more sensitive electronics, this TVS diode provides reliable defense against ESD, load dump, and other transient threats while meeting stringent AEC-Q101 requirements.
For pricing, samples, or technical support, contact Vishay authorized distributor: [email protected]
