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Vishay General Semiconductor - Diodes Division SMF10A-HM3-08
- Part No.:
- SMF10A-HM3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF10A-HM3-08.pdf
- Description:
- TVS DIODE 10VWM 17VC SMF
- Quantity:
- Payment:
- Shipping:
Inventory:9,118
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Product details
Overview
SMF10A-HM3-08 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in DO-219AB (SOD-123W) package, designed for I/O line protection in high-speed digital interfaces. It features a 10 V standoff voltage (VRWM), 17 V maximum clamping voltage at 11.8 A peak pulse current, 562 pF typical capacitance at 1 MHz, ±30 kV IEC 61000-4-2 ESD immunity, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMF10A-HM3-08 datasheet, SMF10A-HM3-08 pinout, SMF10A-HM3-08 application, or SMF10A-HM3-08 equivalent, this device is selected for robust transient suppression in USB 2.0, HDMI, Ethernet PHY, and automotive infotainment data lines where low capacitance and fast response are critical to signal integrity.
Technical Context
The SMF10A-HM3-08 operates as a unidirectional TVS diode with avalanche breakdown behavior, optimized for clamping transients on positive-going signals relative to ground. Its low incremental surge resistance ensures minimal voltage overshoot during 10/1000 μs surges up to 200 W peak power.
It leverages Vishay's "Low Noise" technology for sub-nanosecond response time, enabling effective suppression of ESD events without distorting high-frequency data waveforms. The device is rated for continuous operation from –65 °C to +175 °C and meets AEC-Q101 stress test requirements including HBM >8 kV.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRWM) | 10 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin for 9–10 V nominal bus lines. |
| Clamping Voltage (VC) | 17 V max at IPPM = 11.8 A - Peak voltage seen by protected circuit during worst-case 10/1000 μs surge; limits downstream IC stress. |
| Peak Pulse Power | 200 W (10/1000 μs) - Sustains transient energy without failure; supports IEC 61000-4-5 Level 2 surge immunity. |
| Capacitance (CD) | 562 pF at VR = 0 V, f = 1 MHz - Low enough for USB 2.0 (480 Mbps) and CAN FD signal integrity; avoids excessive rise-time degradation. |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - Exceeds industrial and automotive ESD immunity requirements for exposed connectors. |
| Operating Temp Range | –65 °C to +175 °C - Enables under-hood and powertrain deployment; validated per AEC-Q101 temperature cycling and HTOL. |
Pinout & Package
SMF10A-HM3-08 uses the DO-219AB (SOD-123W) surface-mount package: 3.9 mm × 1.9 mm × 1.08 mm, low-profile, wave/reflow solderable, MSL level 1, UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (cathode-bar side) | Ground reference terminal | Connected to system ground; provides return path for ESD current during negative transients and forward conduction. |
| Cathode (marked with bar) | Protected line terminal | Connected to I/O line (e.g., USB D+, HDMI TMDS+); conducts during overvoltage to clamp to ground. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional clamping architecture | Protects only positive transients on signal-to-ground paths; preserves DC bias and avoids leakage on bidirectional buses. |
| AEC-Q101 qualification | Validated for automotive electronics including engine control units, ADAS sensors, and infotainment systems per stress test requirements. |
| Low-profile DO-219AB package | Enables placement adjacent to high-speed connectors without interfering with shield cans or board stacking height constraints. |
| "Low Noise" fast-response technology | Sub-1 ns turn-on time prevents ESD-induced bit errors in 480 Mbps USB 2.0 and 1.65 Gbps HDMI 1.4a links. |
Applications
| USB 2.0 Interface Protection | HDMI Data Line Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 ports against ESD events from hot-plug insertion and handling. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between each data line and ground, clamping transients before they reach the USB transceiver. Use Value: 562 pF capacitance maintains signal rise/fall times within USB 2.0 specification; ±30 kV ESD rating exceeds IEC 61000-4-2 compliance threshold. | Use Scenario: Safeguarding TMDS clock and data channels in HDMI 1.4 receivers against electrostatic discharge during cable mating. IC Role / Device Role / Timing Role: Ground-referenced clamping device on each TMDS differential pair, with cathode tied to signal and anode to ground. Use Value: 17 V clamping voltage prevents damage to 3.3 V HDMI receiver inputs while preserving eye diagram integrity at 1.65 Gbps. |
| Automotive Infotainment I/O | Industrial Ethernet PHY Port |
Use Scenario: Securing UART, I²C, and analog audio lines in vehicle head units exposed to cabin ESD sources (e.g., seat fabric discharge). IC Role / Device Role / Timing Role: Standalone ESD suppressor on low-speed serial and analog signal paths, leveraging wide –65 °C to +175 °C operating range. Use Value: AEC-Q101 qualification ensures reliability across thermal shock, vibration, and humidity cycles required for automotive Grade 2 applications. | Use Scenario: Protecting RJ45 magnetics interface pins in industrial Ethernet switches subjected to factory-floor ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on PHY-side MDI lines, coordinated with secondary common-mode choke filtering. Use Value: 200 W peak pulse power rating handles combined ESD + burst events per IEC 61000-4-4; DO-219AB footprint enables automated placement near connector. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10A-E3/57T | DO-214AC (SMA) package; 1.5 mm taller; 22.5 V clamping at 10.3 A; 1000 W peak power (8/20 μs). | Higher clamping voltage and larger footprint limit use in space-constrained high-speed interfaces. | Select when higher surge energy handling is needed and PCB layout allows SMA size. |
| TPD2E001DRYR | 2-channel, 0.8 pF per line, SC-70 package; integrated dual-channel ESD array with lower capacitance but lower 12 V standoff. | Designed for ultra-high-speed interfaces (e.g., USB 3.0, MIPI); not suitable for 10 V rail protection due to lower VRWM. | Select for multi-line, low-capacitance protection where VRWM ≥ 10 V is not required. |
Compared with SMAJ10A-E3/57T and TPD2E001DRYR, the SMF10A-HM3-08 delivers optimal balance of 10 V standoff, 17 V clamping, 562 pF capacitance, and compact DO-219AB packaging-making it preferred for cost-sensitive, high-volume automotive and industrial I/O protection where signal fidelity and AEC-Q101 compliance are mandatory.
Availability
SMF10A-HM3-08 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial Ethernet PHY interfaces, and USB 2.0 peripheral designs requiring stable component supply, long-term lifecycle support, and AEC-Q101 qualified ESD protection.
Supply support for SMF10A-HM3-08 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
Vishay Semiconductors is a global leader in discrete semiconductors, specializing in power management, sensing, and protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.
The SMF series belongs to Vishay's eSMP® family of surface-mount TVS diodes, engineered specifically for high-reliability ESD and surge protection in automotive, industrial, and consumer electronics where compact size and AEC-Q101 compliance are essential.
FAQ
What is the standoff voltage rating of the SMF10A-HM3-08?
The SMF10A-HM3-08 has a maximum standoff voltage (VRWM) of 10 V, meaning it remains non-conductive up to this reverse voltage under normal operation. This rating ensures compatibility with 9–10 V nominal signal rails such as automotive LIN bus or 10 V logic interfaces, and is confirmed in the Electrical Characteristics table of Vishay's Document Number 85881.
Is the SMF10A-HM3-08 AEC-Q101 qualified?
Yes, the SMF10A-HM3-08 is AEC-Q101 qualified, as explicitly stated in the Features section of Vishay's SMF5V0A to SMF58A datasheet (Rev. 2.4). It meets stress test requirements including human body model (HBM) >8 kV and operates reliably from –65 °C to +175 °C, making it suitable for automotive powertrain and infotainment applications.
What is the clamping voltage of the SMF10A-HM3-08 at its rated peak pulse current?
The SMF10A-HM3-08 exhibits a maximum clamping voltage (VC) of 17 V at its rated peak pulse current (IPPM) of 11.8 A using a 10/1000 μs waveform. This value is specified in the Electrical Characteristics table and defines the upper voltage limit imposed on protected circuits during surge events.
Does the SMF10A-HM3-08 have polarity marking, and how is it oriented on the PCB?
Yes, the SMF10A-HM3-08 features a cathode bar marking on its DO-219AB package. During PCB layout, the cathode (bar side) connects to the protected signal line, and the anode connects to ground. This orientation is verified in the package outline drawing (Rev. 6, Document no. S8-V-3915.01-001) and carrier tape orientation diagram (Document no. S8-V-3717.02-003).
What is the typical junction capacitance of the SMF10A-HM3-08 at zero bias?
The SMF10A-HM3-08 has a typical junction capacitance (CD) of 562 pF measured at VR = 0 V and f = 1 MHz, as published in the Electrical Characteristics table. This value is critical for high-speed interface design, ensuring minimal signal distortion on USB 2.0 and HDMI 1.4a data lines.
SMF10A-HM3-08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-219AB
- Series:
- eSMP®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 11.8A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 562pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF10A-HM3-08 FAQ
1.How can I place an order for SMF10A-HM3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF10A-HM3-08 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 SMF10A-HM3-08 reliable?
The price and inventory of SMF10A-HM3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF10A-HM3-08 is usually 5 days.
3.What payment methods are accepted for SMF10A-HM3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF10A-HM3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF10A-HM3-08?
SMF10A-HM3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF10A-HM3-08 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 SMF10A-HM3-08?
For technical support, including SMF10A-HM3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF10A-HM3-08 requirements.
6.How does Aetrix verify that SMF10A-HM3-08 is sourced from the original manufacturer or authorized distributors?
All SMF10A-HM3-08 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 SMF10A-HM3-08 meets industry standards.
7.What is the process for return or replacement of SMF10A-HM3-08?
All SMF10A-HM3-08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF10A-HM3-08, 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 SMF10A-HM3-08 part is unused and in its original packaging.
Return procedure for SMF10A-HM3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF10A-HM3-08 Tags
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