SM50T10AY STMicroelectronics TVS Diode (Uni-directional) (Diodes Moulded) In Stock
STMicroelectronics SM50T10AY is an automotive-grade unidirectional TVS diode rated at 5000 W peak pulse power with a 9.9 V nominal breakdown voltage in an SMC package. Designed to ISO 7637-2 and MIL-STD-750 standards for robust transient suppression in 12 V vehicle systems. RoHS-compliant with AEC-Q101 qualification and worldwide distribution.
- Manufacturer
- STMicroelectronics
- Package
- Diodes Moulded
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- SM50T10AY Datasheet PDF
- Category
- TVS Diode (Uni-directional)
- Price
- From $0.7168(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 rating for robust transient suppression in 12 V automotive electrical systems
- 9.9 V nominal breakdown voltage with 14.4 V maximum clamping voltage, compliant with ISO 7637-2 and MIL-STD-750
- AEC-Q101 qualified automotive-grade silicon TVS in compact SMC package for high-reliability vehicle applications
Applications
The SM50T10AY is designed for protecting automotive ECUs, body electronics, and powertrain modules from ISO 7637-2 load dump transients on 12 V vehicle power rails. Its 5000 W peak pulse power and 14.4 V maximum clamping voltage efficiently clamp voltage spikes caused by alternator disconnection and inductive switching events. This TVS diode suits under-hood environments where operating temperatures reach up to 175°C and MIL-STD-750 compliance is required.
Specifications
| Factory Lead Time | 21Weeks |
| YTEOL | 8 |
| Additional Feature | ISO 7637-2; MIL-STD-750 |
| Breakdown Voltage-Max | 10.4V |
| Breakdown Voltage-Min | 9.4V |
| Breakdown Voltage-Nom | 9.9V |
| Clamping Voltage-Max | 14.4V |
| 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 | 8.5V |
| Reverse Current-Max | 20 µA |
| Reverse Test Voltage | 8.5V |
| 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
How does SM50T10AY's 5000 W peak pulse power protect automotive ECUs from ISO 7637-2 transients?
The SM50T10AY absorbs up to 5000 W peak pulse power during transient events as defined by ISO 7637-2, clamping the voltage to a maximum of 14.4 V across a 9.4 V to 10.4 V breakdown range. This prevents overvoltage damage to ECU microcontrollers and MOSFET gate drivers on 12 V automotive power rails.
What clamping and breakdown voltages define SM50T10AY's protection window for 12 V vehicle systems?
The SM50T10AY has a minimum breakdown voltage of 9.4 V and a maximum breakdown voltage of 10.4 V, with a nominal of 9.9 V. The maximum clamping voltage is 14.4 V at peak pulse current, providing a 9.4 V to 14.4 V protection window that keeps 12 V bus-connected devices safe from load dump spikes.
Which automotive subsystems benefit most from using SM50T10AY over lower-rated TVS alternatives?
Subsystems exposed to severe inductive transients—such as fuel injector drivers, alternator rectifier circuits, and 12 V bus protection in ADAS modules—benefit from SM50T10AY's 5000 W rating. Lower-rated 1500 W or 600 W TVS diodes cannot absorb ISO 7637-2 pulse 5a and 5b load dump transients without degradation, whereas this 5000 W device handles them within the SMC footprint.
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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+ | $1.0400 | $10.40 |
| 100+ | $0.8700 | $87.00 |
| 500+ | $0.8300 | $415.00 |
| 2500+ | $0.7720 | $1930.00 |
| 5000+ | $0.7320 | $3660.00 |
| 10000+ | $0.7168 | $7167.70 |
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