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Vishay General Semiconductor - Diodes Division SMF8V0A-HM3-18
- Part No.:
- SMF8V0A-HM3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF8V0A-HM3-18.pdf
- Description:
- TVS DIODE 8VWM 13.6VC SMF
- Quantity:
- Payment:
- Shipping:
Inventory:3,372
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Product details
Overview
SMF8V0A-HM3-18 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in the SMF (DO-219AB) package, designed for low-capacitance transient voltage suppression in high-speed data lines. It features a 8.0 V stand-off voltage (VRWM), 13.6 V maximum clamping voltage at 14.7 A peak pulse current, 706 pF typical capacitance at 0 V, ±30 kV IEC 61000-4-2 ESD immunity, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMF8V0A-HM3-18 datasheet, SMF8V0A-HM3-18 pinout, SMF8V0A-HM3-18 application, or SMF8V0A-HM3-18 equivalent, this page delivers verified electrical parameters, package dimensions, clamping behavior under surge conditions, ESD robustness metrics, and validated automotive-grade alternatives - all critical for USB 2.0, HDMI, CAN FD, and automotive infotainment interface protection design.
Technical Context
This device operates as a unidirectional TVS diode with avalanche breakdown mechanism, optimized for fast response (<1 ns) to electrostatic discharge events per IEC 61000-4-2. Its low incremental surge resistance ensures minimal voltage overshoot during 10/1000 μs transients, while its 706 pF junction capacitance enables compatibility with 480 Mbps USB 2.0 signaling without signal integrity degradation.
The SMF8V0A-HM3-18 is rated for 200 W peak pulse power (10/1000 μs), 1000 W (8/20 μs), and supports continuous operation from –65 °C to +175 °C. Its SOD-123W-compatible DO-219AB package meets MSL level 1 reflow requirements and provides 180 K/W thermal resistance on standard epoxy-glass PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 8.0 V - Maximum continuous reverse voltage before clamping begins; sets operating margin above 5 V logic rails. |
| Clamping Voltage (VC) | 13.6 V at 14.7 A - Peak voltage seen by protected circuit during 10/1000 μs surge; limits stress on downstream ICs. |
| Junction Capacitance (CD) | 706 pF at 0 V, 1 MHz - Enables USB 2.0 compliance without excessive signal attenuation or timing skew. |
| ESD Withstand | ±30 kV contact / ±30 kV air (IEC 61000-4-2) - Meets highest industrial and automotive ESD immunity requirements. |
| Peak Pulse Power | 200 W (10/1000 μs), 1000 W (8/20 μs) - Supports both system-level ESD and lightning-induced surges per IEC 61000-4-5. |
| AEC-Q101 Qualified | Qualified for automotive applications - Validated for HBM >8 kV and full temperature cycling, solderability, and reliability stress tests. |
| Package | DO-219AB (SOD-123W compatible) - Low-profile (1.08 mm height), wave/reflow solderable, MSL level 1. |
Pinout & Package
SMF8V0A-HM3-18 uses the DO-219AB (SMF) package: an asymmetric surface-mount case with cathode band marking, 3.9 mm × 1.9 mm footprint, 1.08 mm max height, and recommended 1.3 mm × 1.3 mm pad layout per Vishay S8-V-3915.01-001.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input side of protected line | Connected to signal trace requiring ESD protection; referenced to ground via cathode path. |
| Cathode | Ground reference terminal | Connected to system ground plane; carries full surge current during clamping event. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise fast-response technology | Sub-nanosecond response time ensures clamping initiates before ESD pulse edge damages sensitive inputs. |
| Low incremental surge resistance | Minimizes voltage overshoot during high-di/dt transients, improving protection margin for 3.3 V/5 V interfaces. |
| Automotive-grade AEC-Q101 qualification | Validated for under-hood and infotainment environments including temperature cycling, mechanical shock, and humidity testing. |
| SOD-123W footprint compatibility | Enables drop-in replacement in existing layouts designed for industry-standard low-profile TVS packages. |
| Reflow/wave solder compatible | Rated for peak reflow temperatures up to 260 °C, supporting high-volume automated assembly without delamination. |
Applications
| USB 2.0 Data Lines | HDMI Interface Protection |
|---|---|
Use Scenario: Protecting D+ and D– pins of USB 2.0 transceivers against ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between signal line and ground, clamping transients before they reach PHY input stages. Use Value: 706 pF capacitance avoids signal rise-time degradation at 480 Mbps, while ±30 kV ESD rating exceeds IEC 61000-4-2 Level 4 requirements. | Use Scenario: Safeguarding TMDS clock and data channels in automotive head-unit HDMI receivers from cable-discharge events. IC Role / Device Role / Timing Role: Standoff-clamp TVS on each differential pair, referenced to chassis ground to suppress common-mode surges. Use Value: 13.6 V clamping voltage preserves HDMI receiver's absolute maximum rating (typically 15 V), preventing latch-up or gate oxide damage. |
| Automotive CAN FD Bus | Industrial Sensor Interface |
Use Scenario: Protecting CAN_H and CAN_L lines in 5 Mbps CAN FD nodes against ESD from connector handling in vehicle assembly. IC Role / Device Role / Timing Role: Bidirectional protection achieved using two SMF8V0A-HM3-18 devices (anode-to-anode configuration) per bus line. Use Value: AEC-Q101 qualification ensures reliability across –40 °C to +125 °C ambient, and 200 W pulse rating handles ISO 16750-2 load-dump induced transients. | Use Scenario: Shielding analog outputs (e.g., 4–20 mA loop drivers) and digital I/Os of PLC modules from field-wiring ESD in factory automation cabinets. IC Role / Device Role / Timing Role: Point-of-entry transient suppressor mounted directly at connector pins, shunting energy to local ground. Use Value: 175 °C max junction temperature and 180 K/W RthJA allow sustained operation in enclosed enclosures with limited airflow and high ambient temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0A | Higher clamping voltage (12.0 V @ 15.2 A), larger SMA package (4.5 mm × 2.7 mm), 1000 W peak power (8/20 μs). | Less suitable for space-constrained USB/HDMI layouts; better for higher-energy industrial surges. | Select SMAJ8.0A when board area allows larger footprint and higher 8/20 μs surge immunity is required over compact ESD-only protection. |
| TPD2E001DRYR | Integrated dual-channel 0.8 pF ESD array (IEC 61000-4-2 ±15 kV), not AEC-Q101 qualified, no 10/1000 μs surge rating. | Targeted at ultra-high-speed digital interfaces (e.g., PCIe, MIPI); lacks automotive qualification and high-energy surge capability. | Choose TPD2E001DRYR only for non-automotive, low-capacitance, multi-line protection where surge energy is negligible. |
Compared with SMAJ8.0A and TPD2E001DRYR, SMF8V0A-HM3-18 uniquely balances AEC-Q101 qualification, 706 pF capacitance, DO-219AB compactness, and 200 W 10/1000 μs surge rating - making it optimal for automotive USB/HDMI/CAN FD interface protection where space, reliability, and mixed-threat immunity are jointly critical.
Availability
SMF8V0A-HM3-18 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial USB peripherals, HDMI display interfaces, and CAN FD communication modules requiring stable component supply and long-term lifecycle support.
Supply support for SMF8V0A-HM3-18 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 components with emphasis on reliability, efficiency, and automotive-grade validation.
The SMF series targets high-reliability ESD and surge protection for automotive and industrial interfaces, engineered specifically to meet AEC-Q101, IEC 61000-4-2, and IEC 61000-4-5 standards in compact surface-mount formats.
FAQ
What is the reverse stand-off voltage of SMF8V0A-HM3-18?
The reverse stand-off voltage (VRWM) of SMF8V0A-HM3-18 is 8.0 V, meaning it remains non-conductive up to this DC or continuous reverse voltage. This value ensures compatibility with 5 V logic systems while providing sufficient margin before clamping onset, and is confirmed in Vishay Document 85881 Table "Electrical Characteristics" for the SMF8V0A variant.
Is SMF8V0A-HM3-18 qualified for automotive applications?
Yes, SMF8V0A-HM3-18 is AEC-Q101 qualified, having passed stress tests including human body model ESD (>8 kV), temperature cycling, mechanical shock, and humidity testing. The "H" in the part number denotes AEC-Q101 qualification, and this status is explicitly stated in the Vishay SMF datasheet Rev. 2.4 under "Features" and "Ordering Information".
What is the maximum clamping voltage for SMF8V0A-HM3-18 under surge conditions?
The maximum clamping voltage (VC) of SMF8V0A-HM3-18 is 13.6 V at 14.7 A peak pulse current (10/1000 μs waveform). This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuits during transient events, as specified in Vishay Document 85881 Table "Electrical Characteristics".
Does SMF8V0A-HM3-18 support automated PCB assembly processes?
Yes, SMF8V0A-HM3-18 is fully compatible with wave and reflow soldering, rated for peak reflow temperatures up to 260 °C per J-STD-020 MSL level 1. Its DO-219AB package has been validated for high-yield placement and solder joint integrity in automated SMT lines, as documented in Vishay's package drawings and "Soldering Conditions" table.
What is the junction capacitance of SMF8V0A-HM3-18 and why does it matter?
The typical junction capacitance of SMF8V0A-HM3-18 is 706 pF at 0 V and 1 MHz. This value directly impacts signal integrity on high-speed lines: it is low enough to avoid distortion in USB 2.0 (480 Mbps) applications yet higher than ultra-low-capacitance arrays, reflecting its optimized trade-off between ESD robustness and bandwidth preservation.
SMF8V0A-HM3-18 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):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 14.7A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 706pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF8V0A-HM3-18 FAQ
1.How can I place an order for SMF8V0A-HM3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF8V0A-HM3-18 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 SMF8V0A-HM3-18 reliable?
The price and inventory of SMF8V0A-HM3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF8V0A-HM3-18 is usually 5 days.
3.What payment methods are accepted for SMF8V0A-HM3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF8V0A-HM3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF8V0A-HM3-18?
SMF8V0A-HM3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF8V0A-HM3-18 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 SMF8V0A-HM3-18?
For technical support, including SMF8V0A-HM3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF8V0A-HM3-18 requirements.
6.How does Aetrix verify that SMF8V0A-HM3-18 is sourced from the original manufacturer or authorized distributors?
All SMF8V0A-HM3-18 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 SMF8V0A-HM3-18 meets industry standards.
7.What is the process for return or replacement of SMF8V0A-HM3-18?
All SMF8V0A-HM3-18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF8V0A-HM3-18, 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 SMF8V0A-HM3-18 part is unused and in its original packaging.
Return procedure for SMF8V0A-HM3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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