SM15T10CAY STMicroelectronics TVS Diode (Bi-directional) (Diodes Moulded Non Polarised) In Stock
The STMicroelectronics SM15T10CAY is an automotive-grade bidirectional TVS diode rated at 1,500 W peak pulse power with a 10 V standoff voltage and 18.6 V maximum clamping voltage, housed in a DO-214AB (SMC) SMD package. It provides robust transient overvoltage protection for 12 V automotive bus lines and sensitive ECU circuits against load dump and ISO 7637 transients. Available in stock worldwide with fast shipping.
- Manufacturer
- STMicroelectronics
- Package
- Diodes Moulded Non Polarised
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- SM15T10CAY Datasheet PDF
- Category
- TVS Diode (Bi-directional)
- Price
- From $0.3990(MOQ 100)
- Temp Range
- -40.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 1,500 W peak pulse power handling (10/1000 µs waveform) for robust automotive transient suppression on 12 V bus lines
- 10 V standoff voltage with 18.6 V maximum clamping voltage for tight overvoltage protection on automotive ECU inputs
- Bidirectional (CA suffix) configuration protecting circuits from both positive and negative transient events on AC-coupled and bridge lines
- Automotive-qualified DO-214AB (SMC) SMD package meeting AEC-Q101 reliability standards for harsh vehicle environments
Applications
The SM15T10CAY is designed to protect automotive ECU power supply inputs, sensor lines, and communication bus interfaces against transient voltage surges exceeding 10 V, including ISO 7637-2 load dump pulses up to 1,500 W peak. Its bidirectional configuration makes it suitable for CAN bus, LIN bus, and DC motor drive lines where both positive and negative transients must be clamped. It is also used in 12 V automotive lighting control modules and body control units requiring compact SMC-package TVS diodes with AEC-Q101 qualification.
Specifications
| Factory Lead Time | 53 Weeks, 1 Day |
| YTEOL | 7.04 |
| Breakdown Voltage-Max | 10.5V |
| Breakdown Voltage-Min | 9.5V |
| Breakdown Voltage-Nom | 10V |
| Clamping Voltage-Max | 18.6V |
| 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 | 1500W |
| Number of Elements | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Polarity | BIDIRECTIONAL |
| Reference Standard | AEC-Q101; IEC-61000-4-2; ISO 10605; MIL-STD-750 |
| Rep Pk Reverse Voltage-Max | 8.55V |
| Reverse Current-Max | 10 µ A |
| Reverse Test Voltage | 8.55V |
| Surface Mount | YES |
| Technology | AVALANCHE |
| Terminal Form | C BEND |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Package | Diodes Moulded Non Polarised |
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 and clamping voltage of the SM15T10CAY for automotive bus protection?
The SM15T10CAY is rated for 1,500 W peak pulse power under a 10/1000 µs test waveform and clamps transients to a maximum of 18.6 V at peak pulse current. This means that on a 12 V automotive bus, a load dump transient exceeding the 10 V standoff voltage will be clamped to no more than 18.6 V, protecting downstream ECU components rated for 16 V or 18 V maximum input voltage.
Why is the SM15T10CAY's bidirectional configuration important for CAN bus and motor drive protection?
The bidirectional (CA) configuration of the SM15T10CAY means it clamps overvoltage transients in both positive and negative directions relative to ground, which is essential for differential bus signals like CAN bus where voltage swings can go both above and below the reference rail. On brushed DC motor drive lines, back-EMF kickback produces negative voltage spikes that a unidirectional TVS would not suppress; the bidirectional SM15T10CAY handles both polarities with the same 1,500 W peak rating, simplifying the protection design to a single component per line.
What automotive transient standards does the SM15T10CAY help designs comply with?
The SM15T10CAY is designed to help automotive systems comply with ISO 7637-2 transient immunity requirements, particularly Pulse 5a (load dump) which can generate voltage spikes up to 87 V for 400 ms on unsuppressed 12 V bus lines. With its 1,500 W peak pulse power capability and 18.6 V maximum clamping voltage, the SM15T10CAY suppresses these transients well below the damage threshold of most automotive ICs rated at 20 V to 40 V maximum. The AEC-Q101-qualified SMC package also ensures the device meets automotive component reliability requirements for production use.
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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 |
|---|---|---|
| 100+ | $0.7481 | $74.81 |
| 500+ | $0.5888 | $294.40 |
| 1000+ | $0.5376 | $537.56 |
| 2500+ | $0.4500 | $1125.00 |
| 5000+ | $0.4240 | $2120.00 |
| 10000+ | $0.3990 | $3990.00 |
In Stock · 24h Response · Worldwide Shipping
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