SM50T23AY STMicroelectronics TVS Diode (Uni-directional) (Diodes Moulded) In Stock
STMicroelectronics SM50T23AY is an automotive-grade unidirectional TVS diode rated at 5000 W peak pulse power with a 20 V standoff voltage in SMC package. It features a clamping voltage of 32.4 V max and complies with ISO 7637-2 and MIL-STD-750 standards for robust transient suppression.
- Manufacturer
- STMicroelectronics
- Package
- Diodes Moulded
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- SM50T23AY Datasheet PDF
- Category
- TVS Diode (Uni-directional)
- Price
- From $0.6712(MOQ 10)
- Temp Range
- -55.0°C to 175.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 5000 W peak pulse power handling capacity for heavy-duty automotive transient suppression
- Automotive-qualified per ISO 7637-2 and MIL-STD-750 for reliable operation in harsh environments
- Low clamping voltage of 32.4 V max at 23.4 V nominal breakdown, protecting sensitive electronics efficiently
Applications
The SM50T23AY is designed for automotive electronics requiring protection against load-dump transients, reverse battery, and inductive switching spikes on 12 V and 24 V vehicle power rails. It is suitable for use in ECUs, motor control modules, and power distribution units where ISO 7637-2 compliance is mandated. The SMC surface-mount package facilitates integration into space-constrained automotive PCB designs.
Specifications
| Factory Lead Time | 21Weeks |
| YTEOL | 8 |
| Additional Feature | ISO 7637-2; MIL-STD-750 |
| Breakdown Voltage-Max | 24.6V |
| Breakdown Voltage-Min | 22.2V |
| Breakdown Voltage-Nom | 23.4V |
| Clamping Voltage-Max | 32.4V |
| Configuration | SINGLE, 1 CHANNEL |
| Diode Element Material | SILICON |
| Diode Type | TRANS VOLTAGE SUPPRESSOR DIODE |
| JEDEC-95 Code | DO-214AB |
| JESD-30 Code | R-PDSO-C2 |
| Non-rep Peak Rev Power Dis-Max | 5000W |
| Number of Elements | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Polarity | UNIDIRECTIONAL |
| Reference Standard | AEC-Q101; IEC-61000-4-2, 4-4; ISO 10605; ISO 16750 |
| Rep Pk Reverse Voltage-Max | 20V |
| Reverse Current-Max | 0.2 µ A |
| Reverse Test Voltage | 20V |
| Surface Mount | YES |
| Technology | AVALANCHE |
| Terminal Form | C BEND |
| Terminal Position | DUAL |
| Package | Diodes Moulded |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8541.10.00.50 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the peak pulse power rating and clamping voltage of the SM50T23AY?
The SM50T23AY is rated for 5000 W peak pulse power with a clamping voltage of 32.4 V maximum at a nominal breakdown voltage of 23.4 V, providing strong transient suppression for 20 V standoff automotive circuits.
Which automotive standards does the SM50T23AY comply with, and why does this matter for vehicle ECU designs?
The SM50T23AY is qualified per ISO 7637-2 and MIL-STD-750, ensuring it can withstand the load-dump pulses and switching transients defined in automotive standards. This makes it directly suitable for ECU power supply rails, 12 V battery lines, and 24 V truck systems without additional derating.
How does the SM50T23AY compare to lower-power TVS diodes for protecting a 20 V automotive bus?
At 5000 W peak pulse power and a breakdown voltage range of 22.2 V to 24.6 V, the SM50T23AY handles much larger transient energy than standard 600 W or 1500 W TVS diodes, making it the preferred choice for automotive load-dump events that can exceed 40 V for several hundred milliseconds.
Related Guides
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
ADAQ7768-1 Design Guide for Precision Vibration and Dynamic Signal Measurement
Design ADAQ7768-1 precision data acquisition channels for vibration and dynamic sensing with the right bandwidth, reference, clock, and layout choices.
Jun 30, 2026
AD5204BRZ10 Design Guide for SPI-Controlled Gain and Offset Calibration
Design AD5204BRZ10 digital potentiometer calibration loops with bounded trim span, safe wiper current, clean SPI routing, and reliable startup codes.
Jun 30, 2026
Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 10+ | $1.0700 | $10.70 |
| 100+ | $0.8900 | $89.00 |
| 500+ | $0.8570 | $428.48 |
| 1000+ | $0.8499 | $849.92 |
| 2500+ | $0.6712 | $1678.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”