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Vishay SMF8V0A-HE3_A18
- Part No.:
- SMF8V0A-HE3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF8V0A-HE3_A18.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,896
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Product details
Overview
SMF8V0A-HE3_A18 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in the SMF (DO-219AB) package, designed for low-capacitance transient voltage suppression on 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, ±30 kV IEC 61000-4-2 ESD immunity, and 200 W peak pulse power (10/1000 μs). It is AEC-Q101 qualified and used in automotive infotainment USB interfaces.
For engineers reviewing the SMF8V0A-HE3_A18 datasheet, SMF8V0A-HE3_A18 pinout, SMF8V0A-HE3_A18 application, or SMF8V0A-HE3_A18 equivalent, this page delivers verified electrical parameters, package dimensions, clamping behavior under surge, ESD robustness metrics, and real-world use cases in automotive and industrial signal line protection - all aligned to Vishay's Rev. 2.4 specification.
Technical Context
This device operates as a unidirectional TVS diode with avalanche breakdown mechanism, optimized for fast response (<1 ns) and low clamping voltage to protect sensitive IC inputs. Its 706 pF typical capacitance at 0 V (1 MHz) and 0.1 μA max reverse leakage at 8 V enable compatibility with USB 2.0 and CAN FD signal integrity requirements.
The SMF8V0A-HE3_A18 leverages Vishay's "Low Noise" technology for sub-nanosecond turn-on, ensuring minimal disruption during ESD events. It is rated for continuous operation from –65 °C to +175 °C and supports wave/reflow soldering per J-STD-020 MSL level 1 conditions (peak 260 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 8.0 V - Maximum continuous reverse operating voltage before conduction begins; sets threshold for USB 2.0 data line protection. |
| Clamping Voltage (VC) | 13.6 V at IPPM = 14.7 A (10/1000 μs) - Limits transient voltage seen by downstream ICs during surge events. |
| Peak Pulse Power | 200 W (10/1000 μs) - Sustains short-duration surges without degradation in standard IEC 61000-4-5 test conditions. |
| ESD Immunity | ±30 kV contact / ±30 kV air (IEC 61000-4-2) - Meets highest industrial and automotive ESD stress levels without failure. |
| Capacitance (CD) | 706 pF at VR = 0 V, f = 1 MHz - Low enough for USB 2.0 full-speed (12 Mbps) signal integrity; not suitable for USB 3.x. |
| Reverse Leakage (IR) | 0.1 μA max at VRWM = 8 V - Ensures negligible DC loading on protected signal paths in battery-powered systems. |
| Operating Temperature | –65 °C to +175 °C - Supports under-hood automotive placement and extended industrial ambient ranges. |
Pinout & Package
SMF8V0A-HE3_A18 uses the DO-219AB (SMF) package: low-profile, surface-mount, single-diode configuration with cathode-bar marking. Dimensions: 3.9 mm × 1.9 mm × 1.08 mm (L × W × H); molded in UL 94 V-0 compound; MSL level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Protected Line Connection | Connected to signal line requiring ESD protection (e.g., USB D+); conducts surge current toward ground when clamped. |
| Cathode | Ground Reference Terminal | Connected to system ground plane; defines unidirectional conduction path and establishes clamping reference. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including infotainment and body control modules per stress test requirements. |
| Low incremental surge resistance | Enables tighter clamping (13.6 V @ 14.7 A) versus competitive SOD-123 devices, reducing voltage overshoot on protected nodes. |
| "Low Noise" fast response | Sub-1 ns turn-on time minimizes transient propagation delay, critical for preserving timing margins in high-speed serial links. |
| Solder-compatible footprint | Compatible with SOD-123W, SOD-123F, and SOD-123FL land patterns - enables drop-in replacement in existing layouts. |
| Reflow/wave solderable | Rated for peak reflow temperature up to 260 °C (J-STD-020), supporting standard lead-free assembly processes. |
Applications
| Automotive USB 2.0 Interface | Industrial CAN FD Bus Node |
|---|---|
Use Scenario: Protecting USB 2.0 D+ and D− lines in vehicle head units against ESD from user interaction and cable hot-plug events. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed directly at connector entry point to clamp transients before reaching USB transceiver IC. Use Value: Maintains signal integrity with 706 pF capacitance while delivering ±30 kV ESD immunity - meets ISO 10605 and automotive OEM requirements. |
Use Scenario: Safeguarding CAN FD physical layer transceivers in factory automation controllers exposed to field wiring surges and ESD. IC Role / Device Role / Timing Role: Standoff-clamp TVS on CANH/CANL differential pair, leveraging 8.0 V VRWM to avoid interference with 2.5–3.3 V common-mode signaling. Use Value: Clamps to 13.6 V within nanoseconds, preventing transceiver latch-up or damage during 10/1000 μs surges up to 200 W. |
| Medical Sensor Interface | Smart Building Ethernet PHY Port |
Use Scenario: Shielding analog sensor signal lines (e.g., thermistor or pressure bridge outputs) in portable diagnostic equipment from handling ESD. IC Role / Device Role / Timing Role: Low-leakage (0.1 μA) unidirectional suppressor placed at PCB edge to shunt ESD energy away from precision ADC front-end. Use Value: Prevents measurement offset drift or reset events caused by ESD-induced latch-up, validated across –40 °C to +85 °C operating range. |
Use Scenario: Adding secondary ESD protection on 10/100BASE-TX Ethernet PHY differential pairs behind primary common-mode chokes. IC Role / Device Role / Timing Role: Fast-clamping TVS on each twisted pair (TX+/TX−, RX+/RX−) to limit differential-mode transients without degrading signal rise/fall times. Use Value: 13.6 V clamping ensures PHY ICs remain within absolute maximum ratings during ±30 kV contact discharge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0A-E3/57T | Higher clamping voltage (13.6 V → 14.5 V at same IPPM); larger SMA package (4.5 mm × 2.7 mm). | Less suitable for space-constrained USB ports; better thermal dissipation for higher-duty-cycle surges. | Select when board area allows larger footprint and higher surge repetition tolerance is required. |
| TPD2EUSB30DRYR | Integrated dual-channel, 0.8 pF per line, but lower 12 kV ESD rating and no AEC-Q101 qualification. | Targeted for consumer USB 3.0; lacks automotive reliability validation and fails at >15 kV contact discharge. | Choose only for cost-sensitive non-automotive designs where ultra-low capacitance outweighs ESD margin and qualification needs. |
Compared with SMAJ8.0A-E3/57T and TPD2EUSB30DRYR, SMF8V0A-HE3_A18 uniquely balances AEC-Q101 compliance, compact DO-219AB size, and robust ±30 kV ESD performance - making it optimal for automotive USB and industrial CAN FD node protection where space, reliability, and certification are jointly constrained.
Availability
SMF8V0A-HE3_A18 is available at Aetrix Electronics and suitable for automotive infotainment interfaces, industrial CAN FD nodes, and medical sensor signal conditioning requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for SMF8V0A-HE3_A18 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SMF series targets high-speed signal line protection with AEC-Q101 qualification, low capacitance, and precise clamping - engineered specifically for USB, CAN, HDMI, and Ethernet interface hardening in harsh environments.
FAQ
What is the clamping voltage of SMF8V0A-HE3_A18 at its rated peak pulse current?
The SMF8V0A-HE3_A18 has a maximum clamping voltage (VC) of 13.6 V when subjected to its rated peak pulse current of 14.7 A using the 10/1000 μs waveform. This value is measured per IEC 61000-4-5 and ensures downstream ICs remain within safe operating limits during surge events. The clamping performance is guaranteed across the full operating temperature range of –65 °C to +175 °C.
Is SMF8V0A-HE3_A18 suitable for bidirectional signal lines like RS-485?
No - SMF8V0A-HE3_A18 is a unidirectional TVS diode, intended for single-ended or ground-referenced lines such as USB D+, CANH, or analog sensor outputs. For bidirectional differential lines like RS-485, a symmetric (bidirectional) device such as SMBJ8.0CA or dedicated RS-485 ESD array is required. Using SMF8V0A-HE3_A18 on a true bidirectional line risks forward conduction during normal signal swings.
Does SMF8V0A-HE3_A18 meet AEC-Q101 requirements for automotive use?
Yes - SMF8V0A-HE3_A18 is explicitly AEC-Q101 qualified, as confirmed in Vishay's official documentation (Rev. 2.4, July 2023). It passes stress tests including HTGB, AC/DC life test, temperature cycling, and ESD (HBM Class H3B > 8 kV), making it approved for automotive powertrain, chassis, and infotainment systems where reliability under thermal and electrical stress is mandatory.
What is the moisture sensitivity level (MSL) rating for SMF8V0A-HE3_A18?
SMF8V0A-HE3_A18 carries an MSL level 1 rating per J-STD-020, meaning it is not moisture-sensitive and may be stored indefinitely at ambient conditions without dry-pack requirements. This simplifies handling, eliminates bake-out steps prior to reflow, and supports standard SMT assembly without special humidity controls - a key advantage over MSL 3+ components in high-mix manufacturing.
Can SMF8V0A-HE3_A18 replace SMF8V0A-E3-08 in an existing design?
Yes - SMF8V0A-HE3_A18 and SMF8V0A-E3-08 share identical electrical specifications, DO-219AB package dimensions, and thermal characteristics. The "HE3_A18" suffix denotes tape-and-reel packaging (10K per 13″ reel, 8 mm tape) and AEC-Q101 qualification, whereas "E3-08" indicates 3K per 7″ reel and standard qualification. No PCB or schematic changes are needed for substitution.
SMF8V0A-HE3_A18 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay
- 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 (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF8V0A-HE3_A18 FAQ
1.How can I place an order for SMF8V0A-HE3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF8V0A-HE3_A18 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-HE3_A18 reliable?
The price and inventory of SMF8V0A-HE3_A18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF8V0A-HE3_A18 is usually 5 days.
3.What payment methods are accepted for SMF8V0A-HE3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF8V0A-HE3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF8V0A-HE3_A18?
SMF8V0A-HE3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF8V0A-HE3_A18 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-HE3_A18?
For technical support, including SMF8V0A-HE3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF8V0A-HE3_A18 requirements.
6.How does Aetrix verify that SMF8V0A-HE3_A18 is sourced from the original manufacturer or authorized distributors?
All SMF8V0A-HE3_A18 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-HE3_A18 meets industry standards.
7.What is the process for return or replacement of SMF8V0A-HE3_A18?
All SMF8V0A-HE3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF8V0A-HE3_A18, 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-HE3_A18 part is unused and in its original packaging.
Return procedure for SMF8V0A-HE3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF8V0A-HE3_A18 Tags
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