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STMicroelectronics 1-Element Bi-Directional TVS Diode 400W, 2-Pin DO-214 SM4T28CAY
Specifications
| Country of Origin | India |
|---|---|
| Brand | STMicroelectronics |
| Package | DO-214AC (SMA) |
| Height | 2.45mm |
| Length | 4.6mm |
| Model | SM4T28CAY |
| Width | 2.9mm |
| Mount Type | Surface |
| Series | SM4TxxCAY |
| Maximum Operating Temperature | 150°C |
| Package Type | DO-214 |
| Minimum Operating Temperature | -55°C |
| Pin Count | 2 |
| Number of Elements per Chip | 1 |
| Clamping Voltage VC | 50V |
| Automotive Standard | AEC-Q101 |
| Diode Configuration | Single |
| Direction Type | Bi-Directional |
| Minimum Breakdown Voltage Vbr | 26.7V |
| Maximum Reverse Stand-off Voltage Vwm | 24V |
| Peak Pulse Power Dissipation Pppm | 400W |
| Test Current It | 1mA |
| Maximum Peak Pulse Current Ippm | 46A |
| Maximum Reverse Leakage Current | 1μA |
Key Features
- Designed for automotive applications with AEC-Q101 qualification.
- Provides bidirectional transient voltage suppression protecting sensitive circuits.
- Features a minimum breakdown voltage of 26.7V and clamp voltage of 50V.
- Operates in extreme temperatures from -55°C to 150°C.
- Compact dimensions of 4.6mm length, 2.9mm width and 2.45mm height.
- Peak pulse current capability of 46A ensures robust surge protection.
- Surface mount mount type suitable for automated PCB assembly.
- Complies with surge protection standards ISO 7637-2 and ISO 10605.
Product Description
STMicroelectronics SM4T28CAY is a high-performance 1-element bi-directional transient voltage suppressor (TVS) diode designed for robust automotive surge protection applications. This TVS diode features 400W peak pulse power dissipation capability and operates from a minimum breakdown voltage of 26.7V, making it ideal to protect sensitive automotive electronic circuits against surges defined in ISO 7637-2 and electrostatic discharge according to ISO 10605.
Housed in a compact 2-pin DO-214 surface mount package, the SM4T28CAY ensures space-saving installation on PCBs while delivering reliable protection with a maximum peak pulse current of 46A and a clamping voltage of 50V. Its automotive qualification to AEC-Q101 guarantees suitability under harsh environmental conditions and wide operating temperature range from -55°C up to 150°C.
The diode's length, width, and height measure 4.6mm, 2.9mm, and 2.45mm respectively, fitting standard surface mount technology workflows. With a maximum reverse leakage current of just 1μA, it offers excellent efficiency and minimal power loss during normal operation.
This TVS diode is part of the SM4TxxCAY series by STMicroelectronics, recognized for consistent performance across various voltage ratings within automotive electronic systems. It is engineered to handle transient voltage spikes effectively, prolonging device longevity and system reliability.
Ideal use cases include automotive electronics protection, telecommunications, industrial control equipment, and other critical systems requiring high surge immunity and stable voltage suppression.
Designed for automotive environment with AEC-Q101 qualification. Bi-directional protection for transient voltage suppression. High peak pulse power dissipation rating of 400W. Compact DO-214 surface mount package. Wide operating temperature range from -55°C to 150°C.
Low maximum reverse leakage current of 1μA for efficiency. Compliance with ISO 7637-2 and ISO 10605 surge standards. Robust protection with 46A maximum peak pulse current. Suitable for multiple automotive and industrial surge protection applications.
Explore our catalog for a wide array of Transient Voltage Suppressors from trusted brands to meet your design and protection requirements.
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Frequently Asked Questions
The SM4T28CAY has a peak pulse power dissipation capability of 400W.
The minimum breakdown voltage for this model is 26.7V.
The clamping voltage of this TVS diode is 50V.
This diode can handle a maximum peak pulse current of 46A.
The dimensions of this model are 4.6mm in length, 2.9mm in width, and 2.45mm in height.
It operates within a temperature range of -55°C to 150°C.
This model uses a surface mount type suitable for automated PCB assembly.
It complies with the AEC-Q101 automotive standard.
The maximum reverse leakage current is 1μA.
This diode complies with surge protection standards ISO 7637-2 and ISO 10605.
This model has 1 element per chip.
The diode configuration is single and bi-directional.
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