SM6F30AY STMicroelectronics TVS Diode (Uni-directional) (Other) In Stock
STMicroelectronics SM6F30AY is an automotive-grade unidirectional 600 W TVS diode with a 30 V standoff voltage and 64.3 V maximum clamping voltage, housed in a flat SOD128 package to protect vehicle electronics from transient voltage surges and ESD events.
- Manufacturer
- STMicroelectronics
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- SM6F30AY Datasheet PDF
- Category
- TVS Diode (Uni-directional)
- Price
- From $0.1480(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
- 600 W peak pulse power capability clamps transient surges on automotive 12 V and 24 V supply rails without degradation
- 30 V standoff voltage with 64.3 V maximum clamping voltage provides robust protection for automotive ECU power supply inputs and I/O lines
- Flat SOD128 surface-mount package meets AEC-Q101 automotive qualification for reliable operation from -40°C to 150°C junction temperature
Applications
The SM6F30AY is qualified for automotive electronics protection, guarding ECU power supply inputs, CAN bus transceivers, and LIN interface lines against ISO 7637 transient surges on 12 V and 24 V vehicle battery rails. Its 600 W peak pulse capability and fast response time protect sensitive microcontrollers and communication ICs from load-dump transients that can reach 40 V on conventional 12 V automotive systems. The flat SOD128 package enables low-profile mounting on automotive PCBs where component height is restricted by enclosure clearances.
Specifications
| Factory Lead Time | 25Weeks |
| YTEOL | 7.51 |
| Breakdown Voltage-Max | 36.8V |
| Breakdown Voltage-Min | 33.2V |
| Breakdown Voltage-Nom | 35V |
| Clamping Voltage-Max | 64.3V |
| Configuration | SINGLE, 1 CHANNEL |
| Diode Element Material | SILICON |
| Diode Type | TRANS VOLTAGE SUPPRESSOR DIODE |
| JESD-30 Code | R-PDSO-F2 |
| JESD-609 Code | e3 |
| Non-rep Peak Rev Power Dis-Max | 4000W |
| Number of Elements | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Polarity | UNIDIRECTIONAL |
| Reference Standard | AEC-Q101, IEC-61000-4-2, 4-4 |
| Rep Pk Reverse Voltage-Max | 30V |
| Reverse Current-Max | 0.2 µA |
| Reverse Test Voltage | 30V |
| Surface Mount | YES |
| Technology | AVALANCHE |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | FLAT |
| Terminal Position | DUAL |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8541.10.00.50 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the SM6F30AY protect a CAN transceiver from ISO 7637 load-dump pulses on a 12 V automotive bus?
When a 12 V automotive alternator disconnects under load, the battery rail can spike to 40 V or higher. The SM6F30AY clamps this transient to a maximum of 64.3 V within nanoseconds, absorbing up to 600 W of peak pulse power during the 10 ms to 100 ms transient duration defined by ISO 7637 test pulse 5. This clamping action keeps the CAN transceiver supply pin below its 40 V absolute maximum rating and prevents permanent device damage.
What is the reverse standoff voltage of the SM6F30AY and how does it determine suitability for a 24 V truck electrical system?
The SM6F30AY has a 30 V standoff voltage, meaning it remains non-conducting below 30 V during normal 24 V system operation, consuming negligible leakage current. Its 33.2 V to 36.8 V breakdown voltage range activates the TVS only when the line exceeds the protection threshold, while the 64.3 V maximum clamping voltage at peak pulse current ensures protected loads rated to 40 V remain undamaged during severe transients on 24 V heavy-vehicle electrical systems.
In what way does the AEC-Q101 automotive qualification of the SM6F30AY affect component selection for an engine control unit design?
AEC-Q101 qualification requires the SM6F30AY to pass high-temperature reverse bias (HTRB) at 150°C, temperature cycling across -40°C to 150°C for 1000 cycles, and electromigration stress tests, validating its 600 W clamp performance under harsh underhood conditions. Automotive OEM supply chain rules typically mandate AEC-Q101 certified components on all ECU protection networks, making the SM6F30AY a drop-in compliant choice without requiring additional component-level qualification testing.
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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+ | $0.4300 | $4.30 |
| 100+ | $0.2800 | $28.00 |
| 250+ | $0.2270 | $56.75 |
| 500+ | $0.2000 | $100.00 |
| 1000+ | $0.1660 | $166.00 |
| 6000+ | $0.1480 | $888.00 |
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