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STMicroelectronics SM6F5.0AY
- Part No.:
- SM6F5.0AY
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- SOD-128
- Datasheet:
-
SM6F5.0AY.pdf
- Description:
- TVS DIODE 5VWM 13.4VC SOD128FLAT
- Quantity:
- Payment:
- Shipping:
Inventory:2,771
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Product details
Overview
SM6F5.0AY from STMicroelectronics is an AEC-Q101-qualified unidirectional automotive TVS diode in SOD128 Flat package, designed to protect 12 V automotive circuits against ISO 7637-2 transients (Pulse 1: −150 V; Pulse 2a: +112 V; Pulse 3a/b) and IEC/ISO ESD events (±30 kV contact/air). It features 5.0 V stand-off voltage, 6.4–6.74 V breakdown at 10 mA, and clamps to 9.2 V at 68 A (10/1000 µs).
For engineers reviewing the SM6F5.0AY datasheet, SM6F5.0AY pinout, SM6F5.0AY application, or SM6F5.0AY equivalent, this device is selected for high-reliability 12 V power rail protection where low leakage (≤0.2 µA @ 25 °C), high junction temperature operation (up to +175 °C), and robust 600 W surge capability are required.
Technical Context
The SM6F5.0AY employs planar silicon technology optimized for automotive-grade thermal stability and low leakage across −55 °C to +175 °C junction temperature range. Its dynamic resistance of 0.031 Ω enables tight clamping under high-current transients, while its voltage temperature coefficient (αT = 5.7 × 10−4/°C) ensures predictable VBR and VCL drift with temperature.
It complies with ISO 10605 (C = 330 pF/R = 330 Ω, ±30 kV), IEC 61000-4-2 (C = 150 pF/R = 330 Ω, ±30 kV), and ISO 7637-2 Pulse 1/2a/3a/3b waveforms - all validated at Tj = 175 °C. The SOD128 Flat package supports IPC7531 footprint and JEDEC registered outline for automated assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRM) | 5.0 V - Maximum continuous reverse operating voltage before significant leakage; sets threshold for 12 V system rail protection. |
| Breakdown Voltage (VBR) | 6.4–6.74 V @ 10 mA - Confirmed conduction onset; ensures reliable triggering before downstream IC damage. |
| Clamping Voltage (VCL) | 9.2 V @ 68 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; stays below typical 12 V IC absolute max ratings. |
| Peak Pulse Power (PPP) | 600 W @ 10/1000 µs, 240 W @ 175 °C - Validated energy-handling capacity at maximum junction temperature for sustained reliability. |
| Leakage Current (IRM) | 0.2 µA @ 25 °C, 1 µA @ 85 °C - Enables low-power always-on circuits without battery drain or false triggering. |
| Junction Temperature Range | −55 °C to +175 °C - Supports under-hood placement and extended thermal cycling per AEC-Q101 stress requirements. |
| Dynamic Resistance (RD) | 0.031 Ω - Low impedance limits VCL rise under high di/dt surges; critical for fast transient suppression. |
Pinout & Package
SOD128 Flat package: surface-mount, two-terminal, unidirectional configuration with matte tin-plated leads compliant with J-STD-002, JESD 22-B102 E3, and MIL-STD-750 method 2026. Dimensions: 4.7 mm × 2.4 mm × 1.0 mm (L × W × H); thermal resistance Rth(j-a) = 120 °C/W on standard FR4 footprint (2 cm² copper per lead).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection to ground reference | Completes surge current path to chassis/ground; must be routed with minimal inductance for effective clamping. |
| Cathode | High-side connection to protected line | Connected directly to 12 V rail or signal line; absorbs positive transients and ESD when cathode is biased above anode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock per stress test conditions. |
| 175 °C junction operation | Enables direct mounting near heat sources (e.g., engine control units) without derating or external heatsinking. |
| Low dynamic resistance (0.031 Ω) | Minimizes clamping voltage overshoot during fast-rising transients like ISO 7637-2 Pulse 3b (+150 V). |
| Matte tin lead finish | Ensures solderability per J-STD-020 MSL Level 1 and eliminates tin whisker risk per JESD-201 Class 2. |
| IEC 61000-4-4 Level 4 compliance | Withstands 4 kV electrical fast transients on power lines - essential for CAN/LIN bus power supply filtering. |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) LIN Bus Line |
|---|---|
|
Use Scenario: Protecting 12 V input rail of engine ECU against load dump (ISO 7637-2 Pulse 2a: +112 V) and alternator-induced spikes. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery feed and DC-DC converter input. Use Value: Limits voltage to ≤9.2 V during 68 A surge, preventing overvoltage failure of upstream LDOs and microcontrollers. |
Use Scenario: Shielding LIN transceiver VCC pin from coupled noise and ESD during door module actuation. IC Role / Device Role / Timing Role: Localized TVS at LIN physical layer power node, adjacent to transceiver IC. Use Value: Sub-10 V clamping ensures LIN PHY remains within 12 V absolute maximum rating during ±30 kV ESD events. |
| Automotive Camera Power Supply | Infotainment System USB Port Protection |
|
Use Scenario: Safeguarding 12 V-to-5 V buck converter input in rear-view camera module exposed to hot-swap and cable discharge. IC Role / Device Role / Timing Role: Primary surge suppressor on main power entry before DC-DC stage. Use Value: 0.2 µA leakage prevents standby current accumulation across dozens of cameras in multi-camera ADAS systems. |
Use Scenario: Protecting USB VBUS line in head unit against ESD from user insertion and conducted transients from vehicle battery. IC Role / Device Role / Timing Role: TVS placed inline with USB connector, referenced to system ground. Use Value: 30 kV air/contact ESD immunity meets OEM USB port durability requirements without degrading signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional automotive TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A | Higher VCL = 9.6 V @ 64.9 A; lower PPP = 400 W; SMA package (larger footprint, higher Rth(j-a)). | Limited to ambient-temperature environments; not rated for 175 °C operation or ISO 7637-2 Pulse 1 (−150 V). | Select when cost sensitivity outweighs under-hood thermal performance and full ISO 7637-2 coverage. |
| TPSMD5.0 | VCL = 9.8 V @ 61.5 A; same 600 W rating; but only AEC-Q200 qualified (not Q101), no ISO 7637-2 validation data published. | Not approved for safety-critical ECU power rails; requires additional system-level testing for automotive deployment. | Consider only for non-safety infotainment subsystems where full AEC-Q101 traceability is not mandated. |
Compared with SMAJ5.0A and TPSMD5.0, SM6F5.0AY uniquely delivers AEC-Q101 certification, 175 °C operation, and documented ISO 7637-2 Pulse 1/2a/3a/3b compliance - making it the only choice for front-line power rail protection in modern engine and transmission control modules.
Availability
SM6F5.0AY is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, ADAS camera power supplies, and infotainment USB ports requiring stable component supply across long production lifecycles.
Supply support for SM6F5.0AY includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive, industrial, and power management solutions with vertical manufacturing and broad IP portfolio.
The SM6FY series belongs to ST's automotive-grade transient voltage suppression portfolio, engineered specifically for robust protection of 12 V and 24 V vehicle networks against ISO 7637-2, ISO 10605, and IEC 61000-4-4 threats in space-constrained SOD128 Flat packages.
FAQ
What is the maximum peak pulse current the SM6F5.0AY can handle at 10/1000 µs?
The SM6F5.0AY is rated for 68 A peak pulse current at 10/1000 µs waveform with VCL = 9.2 V, verified per Table 2 of DS13062 Rev 3. This value is measured at Tamb = 25 °C and reflects the current at which clamping voltage reaches its specified maximum under standardized surge conditions.
Does the SM6F5.0AY meet ISO 7637-2 Pulse 1 requirements for 12 V systems?
Yes - the SM6F5.0AY is explicitly validated for ISO 7637-2 Pulse 1 (−150 V, 50 Ω source impedance) as stated in the datasheet description and Figure 12. Its 600 W peak pulse power rating and low dynamic resistance ensure reliable clamping below 12 V system IC thresholds during this high-energy negative transient.
Can SM6F5.0AY be used in 24 V automotive systems?
No - the 5.0 V stand-off voltage and 6.4–6.74 V breakdown make SM6F5.0AY suitable only for 12 V nominal systems. For 24 V applications, ST recommends SM6F24AY (24 V VRM) or SM6F26AY (26 V VRM), both sharing identical SOD128 Flat package and AEC-Q101 qualification.
Is the SOD128 Flat package compatible with standard reflow profiles?
Yes - the SOD128 Flat package uses matte tin plating and is qualified to J-STD-020 MSL Level 1. ST provides a recommended reflow profile in Figure 24 (peak 240–245 °C, 60–90 s above 217 °C), fully compatible with standard lead-free PCB assembly processes.
SM6F5.0AY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- SOD-128
- Series:
- SM6F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 298A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD128Flat
SM6F5.0AY FAQ
1.How can I place an order for SM6F5.0AY through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6F5.0AY on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SM6F5.0AY reliable?
The price and inventory of SM6F5.0AY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6F5.0AY is usually 5 days.
3.What payment methods are accepted for SM6F5.0AY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6F5.0AY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6F5.0AY?
SM6F5.0AY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6F5.0AY order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SM6F5.0AY?
For technical support, including SM6F5.0AY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6F5.0AY requirements.
6.How does Aetrix verify that SM6F5.0AY is sourced from the original manufacturer or authorized distributors?
All SM6F5.0AY products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SM6F5.0AY meets industry standards.
7.What is the process for return or replacement of SM6F5.0AY?
All SM6F5.0AY units undergo pre-shipment inspection (PSI). If there is an issue with SM6F5.0AY, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SM6F5.0AY part is unused and in its original packaging.
Return procedure for SM6F5.0AY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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