SM6F8.5AY STMicroelectronics TVS Diode (Uni-directional) (Other) In Stock
STMicroelectronics SM6F8.5AY is an automotive-grade 600 W unidirectional TVS diode with 8.5 V standoff, 9.9 V nominal breakdown, and 19.5 V clamping voltage in a SOD128 Flat package.
- Manufacturer
- STMicroelectronics
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- SM6F8.5AY Datasheet PDF
- Category
- TVS Diode (Uni-directional)
- Price
- From $0.1416(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 dissipation rating with 8.5 V standoff voltage for robust automotive transient protection
- Tight breakdown voltage range of 9.4 V to 10.4 V (nominal 9.9 V) ensures precise clamping at 19.5 V max
- Automotive-qualified single-channel silicon TVS in compact SOD128 Flat package for space-constrained vehicle ECUs
Applications
The SM6F8.5AY is designed to protect automotive ECUs, body control modules, and 12V bus interfaces from transient overvoltages such as load dumps and inductive switching spikes. Its 600 W peak pulse power and 19.5 V maximum clamping voltage make it a first-line transient suppressor for microcontroller I/O lines and low-side driver outputs in harsh automotive environments.
Specifications
| Factory Lead Time | 25Weeks |
| YTEOL | 7.51 |
| Breakdown Voltage-Max | 10.4V |
| Breakdown Voltage-Min | 9.4V |
| Breakdown Voltage-Nom | 9.9V |
| Clamping Voltage-Max | 19.5V |
| 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 | 8.5V |
| Reverse Current-Max | 20 µA |
| Reverse Test Voltage | 8.5V |
| 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
What peak pulse power and clamping voltage does SM6F8.5AY provide for automotive transient protection?
The SM6F8.5AY handles 600 W of peak pulse power and clamps transient voltages to a maximum of 19.5 V, protecting downstream circuits connected to 8.5 V standoff rails in automotive 12V systems from load-dump and inductive transients.
How do the breakdown voltage limits of SM6F8.5AY affect its use on a 9V automotive bus line?
With a breakdown voltage ranging from 9.4 V minimum to 10.4 V maximum (nominal 9.9 V), the SM6F8.5AY sits just above a nominal 9V bus voltage, ensuring it conducts only during transient overvoltage events and does not clamp normal operating signals, which is critical for accurate ECU protection.
Why is the SOD128 Flat package well suited for high-density automotive PCB layouts?
The SOD128 Flat is a 2-pin flat SMD package with a low profile and small footprint, enabling placement close to protected IC pins on densely routed automotive PCBs. Its 600 W dissipation capability in this compact outline reduces parasitic inductance in the protection path compared to through-hole TVS alternatives.
How does SM6F8.5AY compare to a bidirectional TVS when protecting a unidirectional 8.5 V automotive supply rail?
For a unidirectional supply rail referenced to ground, the unidirectional SM6F8.5AY offers a lower clamping voltage than a bidirectional equivalent of the same rating, since it only needs to handle one polarity. This means tighter protection at 19.5 V max clamp while maintaining the same 600 W peak pulse capability.
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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+ | $0.4400 | $4.40 |
| 100+ | $0.2800 | $28.00 |
| 250+ | $0.2690 | $67.25 |
| 500+ | $0.2200 | $110.00 |
| 1000+ | $0.2014 | $201.38 |
| 15000+ | $0.1416 | $2123.70 |
In Stock · 24h Response · Worldwide Shipping
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