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STMicroelectronics SMB6F130AY
- Part No.:
- SMB6F130AY
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-221AA, SMB Flat Leads
- Datasheet:
-
SMB6F130AY.pdf
- Description:
- TVS DIODE 130VWM 209VC SMBFLAT
- Quantity:
- Payment:
- Shipping:
Inventory:7,516
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Product details
Overview
SMB6F130AY from STMicroelectronics is an AEC-Q101-qualified unidirectional automotive TVS diode in SMB Flat package, designed to clamp transient overvoltages up to 209 V (clamping voltage at 3 A) with 130 V stand-off voltage and 600 W peak pulse power (10/1000 µs). It operates from −55 °C to +175 °C junction temperature and delivers 265 A peak pulse current under 8/20 µs surge, protecting CAN, LIN, and body control modules against ISO 7637-2 pulses and IEC 61000-4-2 ESD events.
For engineers reviewing the SMB6F130AY datasheet, SMB6F130AY pinout, SMB6F130AY application, or SMB6F130AY equivalent, this device is selected for high-reliability 12 V/24 V automotive power line protection where low leakage (<0.2 µA at 25 °C), flat 1 mm profile, and validated ISO 10605 ±30 kV air/contact discharge performance are critical.
Technical Context
This TVS diode uses planar silicon technology to achieve stable breakdown behavior across −55 °C to +175 °C, with a temperature coefficient αT of 10.8 × 10−4/°C enabling accurate VBR and VCL prediction at elevated junction temperatures. Its unidirectional configuration provides asymmetric clamping optimized for DC-biased automotive lines.
It meets ISO 7637-2 Pulse 1 (−150 V), Pulse 2a (+112 V), Pulse 3a (−220 V), and Pulse 3b (+150 V) requirements for 12 V systems, while maintaining <1 µA leakage at 85 °C and dynamic resistance of 7 Ω at 3 A - key for minimizing voltage overshoot during fast transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRM) | 130 V - maximum continuous reverse operating voltage before conduction begins |
| Breakdown Voltage (VBR) | 144–160 V at 1 mA - precise threshold for initiating clamping under surge conditions |
| Clamping Voltage (VCL) | 209 V at 3 A (10/1000 µs) - limits downstream circuit voltage during worst-case transients |
| Peak Pulse Power | 600 W (10/1000 µs), 4 kW (8/20 µs) - defines energy-handling capability per waveform standard |
| Leakage Current | 0.2 µA at 25 °C, 1 µA at 85 °C - ensures minimal standby power loss and signal integrity in always-on modules |
| Junction Temperature Range | −55 °C to +175 °C - supports under-hood placement without derating in engine control units |
| Dynamic Resistance (RD) | 7 Ω - determines voltage rise above VBR under surge current (ΔV = RD × IPP) |
Pinout & Package
The SMB6F130AY is housed in an SMB Flat surface-mount package with 2 terminals: Cathode (marked band) and Anode. The 1 mm profile enables PCB height constraints in compact automotive ECUs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked band) | Surge return path / clamping reference | Connected to protected line; conducts during positive transients relative to anode |
| Anode | Ground reference / surge sink | Typically tied to chassis or battery ground; completes clamping path for unidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock testing |
| ISO 10605 ±30 kV ESD immunity | Exceeds Level 4 for both air and contact discharge on 150 pF/330 Ω and 330 pF/330 Ω models |
| Flat 1 mm SMB package | Enables low-profile layout in space-constrained junction boxes and ADAS sensor housings |
| Low dynamic resistance (7 Ω) | Minimizes clamping voltage overshoot during high-di/dt events like load dump or inductive switching |
| High Tj max (175 °C) | Supports direct mounting near heat sources such as power relays or motor drivers without thermal derating |
Applications
| Body Control Module (BCM) | Powertrain Control Unit (PCU) |
|---|---|
|
Use Scenario: Protecting LIN bus lines and door actuator power inputs from battery load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional clamping device placed between 12 V supply rail and ground, triggered within nanoseconds of overvoltage onset. Use Value: Prevents latch-up or permanent damage to microcontrollers and driver ICs by limiting transient voltage to ≤209 V at 3 A surge. |
Use Scenario: Safeguarding fuel injector drivers and crankshaft position sensor interfaces against ISO 7637-2 Pulse 1 (−150 V) and Pulse 3a (−220 V). IC Role / Device Role / Timing Role: Primary transient suppressor on 12 V power input, operating in parallel with bulk capacitance to absorb energy before it reaches sensitive analog front-ends. Use Value: Maintains functional safety integrity by ensuring no voltage excursion exceeds 209 V during validated automotive surge waveforms. |
| Advanced Driver Assistance Systems (ADAS) | Infotainment Head Unit |
|
Use Scenario: Shielding camera module power rails and CAN FD communication lines from ESD events during vehicle assembly and service. IC Role / Device Role / Timing Role: Fast-response TVS placed at connector entry points to shunt ESD current away from image signal processors and serializer ICs. Use Value: Achieves ±30 kV contact discharge immunity per ISO 10605, eliminating field failures due to electrostatic handling damage. |
Use Scenario: Securing USB-C and HDMI power delivery paths against hot-plug surges and conducted noise from shared vehicle ground. IC Role / Device Role / Timing Role: Standoff-rated protector on 5 V/12 V auxiliary rails, activated only during transients to avoid loading normal operation. Use Value: Enables reliable hot-swap functionality with <0.2 µA leakage at room temperature, preserving standby current budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional automotive TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ130A | Same SMB package, but rated for 600 W (10/1000 µs); VBR min 144 V, VCL 209 V at 3 A - identical electrical specs | No AEC-Q101 qualification; intended for industrial/commercial use only | Select when automotive qualification is not required and cost sensitivity outweighs qualification overhead |
| SMCJ130A | Larger SMC package (2.6 mm height); same VRM/VBR/VCL, but higher 1500 W (10/1000 µs) rating and 440 A IPP | Used where higher surge margin is needed, e.g., alternator output lines or heavy-duty truck 24 V systems | Choose when board space allows and system-level surge testing requires >600 W headroom |
Compared with SMBJ130A and SMCJ130A, SMB6F130AY uniquely combines AEC-Q101 compliance, 1 mm profile, and validated ISO 7637-2 Pulse 3b (+150 V) immunity - making it the only choice for space-constrained, safety-critical automotive power rail protection.
Availability
SMB6F130AY is available at Aetrix Electronics and suitable for automotive body electronics, powertrain control units, ADAS camera modules, and infotainment systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SMB6F130AY 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.
SMB6F130AY belongs to the SMB6FxxAY series - a family of AEC-Q101-qualified unidirectional TVS diodes engineered specifically for robust transient suppression in 12 V/24 V automotive electrical architectures.
FAQ
What is the maximum clamping voltage of SMB6F130AY at 3 A?
The maximum clamping voltage is 209 V under 10/1000 µs waveform at 3 A peak pulse current, measured at Tamb = 25 °C. This value increases linearly with junction temperature using αT = 10.8 × 10−4/°C, reaching ~225 V at Tj = 175 °C.
Does SMB6F130AY meet ISO 7637-2 Pulse 3b requirements?
Yes - SMB6F130AY is validated for ISO 7637-2 Pulse 3b (+150 V) on 12 V systems. Its 130 V stand-off voltage and 209 V clamping voltage ensure safe operation with margin below the 150 V test amplitude, preventing false triggering while suppressing overshoot.
Can SMB6F130AY be used in 24 V automotive systems?
No - SMB6F130AY is specified for 12 V nominal systems. Its 130 V stand-off voltage is too low for reliable operation on 24 V battery rails, where minimum recommended VRM is ≥170 V (e.g., SMB6F170AY) to accommodate load dump transients exceeding 200 V.
What is the marking code for SMB6F130AY on the device body?
The top-side marking is "7FSY", as defined in Table 6 of DS12412 Rev 1. This 4-character code uniquely identifies the SMB6F130AY variant within the SMB6FxxAY series and confirms unidirectional configuration and automotive grade.
SMB6F130AY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-221AA, SMB Flat Leads
- Series:
- SMB6FxxAY
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 130V
- Voltage - Breakdown (Min):
- 144V
- Voltage - Clamping (Max) @ Ipp:
- 209V
- Current - Peak Pulse (10/1000µs):
- 3A
- 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:
- SMBflat
SMB6F130AY FAQ
1.How can I place an order for SMB6F130AY through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB6F130AY 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 SMB6F130AY reliable?
The price and inventory of SMB6F130AY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB6F130AY is usually 5 days.
3.What payment methods are accepted for SMB6F130AY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB6F130AY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB6F130AY?
SMB6F130AY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB6F130AY 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 SMB6F130AY?
For technical support, including SMB6F130AY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB6F130AY requirements.
6.How does Aetrix verify that SMB6F130AY is sourced from the original manufacturer or authorized distributors?
All SMB6F130AY 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 SMB6F130AY meets industry standards.
7.What is the process for return or replacement of SMB6F130AY?
All SMB6F130AY units undergo pre-shipment inspection (PSI). If there is an issue with SMB6F130AY, 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 SMB6F130AY part is unused and in its original packaging.
Return procedure for SMB6F130AY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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