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Vishay SMF10A-HE3_A18
- Part No.:
- SMF10A-HE3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF10A-HE3_A18.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,821
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Product details
Overview
SMF10A-HE3_A18 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in the SMF (DO-219AB) package, designed for low-capacitance transient suppression on high-speed data lines. It features a 10 V stand-off voltage (VRWM), 17 V maximum clamping voltage at 11.8 A peak pulse current, 562 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 SMF10A-HE3_A18 datasheet, SMF10A-HE3_A18 pinout, SMF10A-HE3_A18 application, or SMF10A-HE3_A18 equivalent, this device is selected for robust electrostatic discharge protection in USB 2.0, HDMI, automotive infotainment interfaces, and industrial sensor signal conditioning where low clamping voltage and sub-1 ns response time are critical.
Technical Context
The SMF10A-HE3_A18 operates as a unidirectional TVS diode with avalanche breakdown behavior, optimized for fast transient response via "Low Noise" silicon technology. Its junction temperature range spans –65 °C to +175 °C, and it delivers 200 W peak pulse power under 10/1000 μs waveform with 0.01 % duty cycle.
Thermal resistance is rated at 180 K/W when mounted on a 3 mm × 3 mm Cu pad on epoxy-glass PCB. The device supports wave and reflow soldering per J-STD-020 MSL level 1, with peak temperature up to 260 °C and flammability rating UL 94 V-0.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 10 V - Maximum continuous reverse operating voltage before clamping begins |
| Clamping Voltage (VC) | 17 V at 11.8 A - Peak voltage seen by protected circuit during 10/1000 μs surge |
| Peak Pulse Power | 200 W (10/1000 μs) - Sustains short-duration transients without failure |
| ESD Immunity | ±30 kV contact/air (IEC 61000-4-2) - Meets highest system-level ESD test requirements |
| Capacitance | 562 pF at 0 V, 1 MHz - Low enough for USB 2.0 and CAN FD signal integrity |
| AEC-Q101 Qualified | Yes - Validated for automotive underhood and cabin applications per stress test standard |
| Package | DO-219AB (SOD-123W compatible) - 3.9 mm × 1.9 mm × 1.08 mm low-profile footprint |
Pinout & Package
SMF10A-HE3_A18 uses the DO-219AB (SMF) package: cathode-marked, single-diode unidirectional configuration. Dimensions: 3.9 mm length × 1.9 mm width × 1.08 mm height. Mold compound: UL 94 V-0 rated; moisture sensitivity level: J-STD-020 MSL level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input side of protected line | Connected to signal trace requiring ESD protection; referenced to ground via cathode |
| Cathode | Ground reference terminal | Connected to system ground plane; provides low-impedance path for transient energy dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Low clamping voltage | 17 V max at 11.8 A ensures downstream ICs remain below absolute maximum ratings during surge events |
| Fast response time | Sub-nanosecond turn-on enables suppression before sensitive logic thresholds are exceeded |
| Automotive-grade reliability | AEC-Q101 qualification confirms performance across thermal cycling, humidity, and mechanical shock profiles |
| Reflow-compatible packaging | SOD-123W-equivalent footprint allows drop-in replacement in existing SMT lines without process change |
| Low leakage current | 0.1 μA max at VRWM minimizes standby power loss in battery-powered sensor nodes |
Applications
| USB 2.0 Data Lines | HDMI Interface Protection |
|---|---|
Use Scenario: Protecting D+ and D– pins of USB 2.0 ports against ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between signal line and chassis ground to clamp transients before reaching USB transceiver. Use Value: 562 pF capacitance avoids signal integrity degradation at 480 Mbps; 17 V clamping prevents damage to PHY-level circuitry. | Use Scenario: Safeguarding TMDS clock and data channels in automotive head-unit HDMI outputs. IC Role / Device Role / Timing Role: Standoff-rated ESD suppressor installed inline with each differential pair, referenced to shield ground. Use Value: ±30 kV ESD rating meets ISO 10605 requirements; AEC-Q101 qualification ensures operation at –40 °C to +125 °C ambient. |
| Automotive CAN FD Bus | Industrial Sensor Signal Conditioning |
Use Scenario: Transient protection on CAN_H/CAN_L lines in ADAS domain controllers exposed to load dump and ESD. IC Role / Device Role / Timing Role: Bidirectional protection achieved using two SMF10A-HE3_A18 devices (anode-to-anode) for symmetric clamping. Use Value: 200 W pulse power handles ISO 7637-2 pulse 1/2b; 10 V VRWM aligns with 12 V nominal bus voltage. | Use Scenario: Shielding analog output lines (e.g., 4–20 mA, 0–10 V) of pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: Low-leakage TVS placed between signal conductor and local ground to absorb field-induced surges. Use Value: 0.1 μA IR at 10 V preserves accuracy in microamp-level measurement circuits; 175 °C TJ rating supports enclosed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10A | Higher clamping voltage (20.1 V), larger SMA package (4.5 mm × 2.7 mm), 600 pF capacitance | Less suitable for high-speed interfaces; better for lower-frequency power rail protection | Select SMAJ10A only if board space allows larger footprint and higher VC is acceptable |
| TPD2E001DRYR | Integrated dual-channel 0.8 pF ESD array, 5 V VRWM, not AEC-Q101 qualified | Designed for USB Type-C and I²C; lacks automotive qualification and 10 V standoff capability | Choose TPD2E001DRYR for ultra-low-capacitance consumer port protection, not automotive or 10 V systems |
Compared with SMAJ10A and TPD2E001DRYR, SMF10A-HE3_A18 uniquely balances 10 V standoff, 17 V clamping, AEC-Q101 compliance, and DO-219AB compactness-making it optimal for space-constrained automotive data lines where both voltage margin and speed matter.
Availability
SMF10A-HE3_A18 is available at Aetrix Electronics and suitable for automotive infotainment, industrial sensor interfaces, and USB 2.0 peripheral designs requiring stable component supply and long-term lifecycle support.
Supply support for SMF10A-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 interface protection with AEC-Q101 qualification, low capacitance, and tight clamping-designed specifically for next-generation automotive data buses and industrial IoT edge nodes.
FAQ
What is the maximum clamping voltage of SMF10A-HE3_A18 under standard surge conditions?
The SMF10A-HE3_A18 has a maximum clamping voltage (VC) of 17 V when subjected to an 11.8 A peak pulse current with a 10/1000 μs waveform. This value is specified in the Electrical Characteristics table and ensures protected circuits remain within safe operating limits during transient events. The clamping performance is validated per IEC 61000-4-5 and maintained across its full operating temperature range.
Is SMF10A-HE3_A18 qualified for automotive applications?
Yes, SMF10A-HE3_A18 is AEC-Q101 qualified, confirming its suitability for automotive environments including engine control units, infotainment systems, and ADAS modules. The qualification covers stress tests such as temperature cycling, humidity bias, and mechanical shock. Its operating temperature range of –65 °C to +175 °C further supports under-hood and cabin deployment.
What package type does SMF10A-HE3_A18 use, and is it compatible with standard SMT processes?
SMF10A-HE3_A18 uses the DO-219AB (SMF) package, also compatible with SOD-123W footprints. It is fully wave and reflow solderable, rated for peak temperatures up to 260 °C per J-STD-020 MSL level 1. The 3.9 mm × 1.9 mm × 1.08 mm profile supports high-density PCB layouts while maintaining compatibility with standard pick-and-place and reflow equipment.
How does the 562 pF capacitance of SMF10A-HE3_A18 affect high-speed signal integrity?
The 562 pF typical capacitance of SMF10A-HE3_A18 at 0 V and 1 MHz is optimized for USB 2.0 (480 Mbps) and CAN FD (up to 5 Mbps) interfaces. While higher than some ultra-low-capacitance arrays, it introduces negligible rise-time degradation on properly terminated lines and remains well below the 1 nF threshold that typically impacts signal fidelity. Layout best practices-such as minimizing trace length between diode and connector-preserve integrity.
Can SMF10A-HE3_A18 be used for bidirectional protection, and if so, how?
SMF10A-HE3_A18 is unidirectional but can be configured for bidirectional protection by connecting two devices anode-to-anode in series between the signal line and ground. This arrangement provides symmetrical clamping for both positive and negative transients, commonly applied on CAN FD or RS-485 buses. The resulting clamping voltage remains near 17 V per polarity, preserving system-level surge margin.
SMF10A-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):
- 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 (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF10A-HE3_A18 FAQ
1.How can I place an order for SMF10A-HE3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF10A-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 SMF10A-HE3_A18 reliable?
The price and inventory of SMF10A-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 SMF10A-HE3_A18 is usually 5 days.
3.What payment methods are accepted for SMF10A-HE3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF10A-HE3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF10A-HE3_A18?
SMF10A-HE3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF10A-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 SMF10A-HE3_A18?
For technical support, including SMF10A-HE3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF10A-HE3_A18 requirements.
6.How does Aetrix verify that SMF10A-HE3_A18 is sourced from the original manufacturer or authorized distributors?
All SMF10A-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 SMF10A-HE3_A18 meets industry standards.
7.What is the process for return or replacement of SMF10A-HE3_A18?
All SMF10A-HE3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF10A-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 SMF10A-HE3_A18 part is unused and in its original packaging.
Return procedure for SMF10A-HE3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF10A-HE3_A18 Tags
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