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Vishay SMF10A-HM3_A18
- Part No.:
- SMF10A-HM3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF10A-HM3_A18.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,150
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Product details
Overview
SMF10A-HM3_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 applications.
For engineers reviewing the SMF10A-HM3_A18 datasheet, SMF10A-HM3_A18 pinout, SMF10A-HM3_A18 application, or SMF10A-HM3_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
This diode operates as a unidirectional TVS (Transient Voltage Suppressor) with avalanche breakdown behavior, optimized for fast clamping of ESD transients while minimizing capacitive loading on signal paths. Its low incremental surge resistance ensures minimal voltage overshoot during 10/1000 μs surges, and its "Low Noise" technology enables sub-nanosecond response to ESD events per IEC 61000-4-2.
The SMF10A-HM3_A18 is rated for continuous operation from –65 °C to +175 °C, supports wave and reflow soldering per J-STD-020 MSL level 1, and maintains stable reverse leakage (<0.1 μA at VRWM) across its full temperature range - enabling reliable use in under-hood automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 10 V - Maximum continuous working voltage before clamping begins; defines safe operating margin for 9–10 V nominal signal rails. |
| Clamping Voltage (VC) | 17 V max at IPPM = 11.8 A - Limits transient-induced overvoltage to ≤17 V during 10/1000 μs surge, protecting downstream ICs. |
| Peak Pulse Power (PPP) | 200 W at 10/1000 μs - Sustains short-duration surges without degradation; sufficient for IEC 61000-4-5 Level 2 (1 kV) line transients. |
| Capacitance (CD) | 562 pF typ. at 0 V, 1 MHz - Low enough for USB 2.0 (480 Mbps) and CAN FD signal integrity; avoids excessive signal attenuation or rise-time degradation. |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - Exceeds Level 4 immunity requirements; eliminates need for secondary ESD staging in most designs. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including HBM >8 kV; approved for use in powertrain, body control, and ADAS subsystems. |
| Package | DO-219AB (SOD-123W-compatible) - 3.9 × 1.9 × 1.08 mm low-profile outline; enables dense PCB layouts and automated assembly. |
Pinout & Package
SMF10A-HM3_A18 uses the DO-219AB (SMF) package: cathode-marked surface-mount diode with two terminals in a single-row, gull-wing configuration. The package conforms to JEDEC MO-229 and is compatible with SOD-123W footprint recommendations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Input/line side terminal | Connected to protected signal line; conducts surge current toward ground when reverse-biased beyond VRWM. |
| Cathode (bar-marked end) | Ground reference terminal | Connected to system ground plane; establishes clamping reference and provides low-inductance path for transient energy dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| 200 W peak pulse power (10/1000 μs) | Enables single-device protection against repetitive ESD and lightning-induced surges without thermal runaway or parameter shift. |
| ±30 kV IEC 61000-4-2 ESD immunity | Meets highest industrial and automotive ESD stress levels without external shielding or layout reinforcement. |
| 562 pF capacitance at 0 V | Preserves signal integrity on 480 Mbps USB 2.0 and 100 Mbps Ethernet PHY interfaces without requiring equalization or retiming. |
| AEC-Q101 qualified | Validated for 15-year automotive service life under thermal cycling, humidity, and mechanical shock per JESD22 standards. |
| Low-profile DO-219AB package | Reduces board space by 30% vs. SMA packages; supports 0.5 mm pitch routing and high-density flex-rigid PCBs. |
Applications
| USB 2.0 Data Lines | HDMI Signal Paths |
|---|---|
|
Use Scenario: Protecting D+ and D− lines in portable USB host/device ports exposed to frequent human-hand ESD events. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed in series with each data line, referenced to chassis ground. Use Value: Clamps transients to ≤17 V within <1 ns, preventing latch-up or damage to USB transceivers while adding only 562 pF loading per line. |
Use Scenario: Shielding TMDS clock and data channels in automotive infotainment head units from ESD coupling via display cables. IC Role / Device Role / Timing Role: Point-of-entry ESD suppressor on each TMDS differential pair, mounted adjacent to HDMI connector. Use Value: Maintains signal rise/fall times <200 ps and eye diagram compliance at 2.25 Gbps, with no measurable jitter increase. |
| Automotive CAN FD Bus | Industrial Sensor Analog Outputs |
|
Use Scenario: Safeguarding CAN_H/CAN_L nodes in vehicle body control modules subjected to ISO 10605 discharge events. IC Role / Device Role / Timing Role: Bidirectional protection implemented using two SMF10A-HM3_A18 devices (anode-to-anode) across the bus pair. Use Value: Provides symmetrical ±17 V clamping with <0.5 Ω dynamic impedance, preserving CAN FD bit timing and dominant/recessive voltage margins. |
Use Scenario: Protecting 4–20 mA current-loop outputs of pressure/temperature transmitters in factory automation cabinets. IC Role / Device Role / Timing Role: Reverse-biased TVS connected between output and local ground to shunt induced surges from nearby relay switching. Use Value: Prevents output saturation or DAC latch-up during 1 kV surge tests (IEC 61000-4-4), maintaining loop accuracy within ±0.1% FSR. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10A-E3/57T | Higher clamping voltage (20.1 V), larger SMA package (4.5 × 2.7 × 2.2 mm), 650 pF capacitance | Less suitable for USB 2.0 due to higher capacitance and slower response; better for lower-speed 24 V industrial lines | Select if board space allows larger footprint and higher clamping margin is acceptable for 24 V systems. |
| TPD2E001DRYR | 2-channel, 15 pF dual-diode array in SOT-553; 12 V VRWM; not AEC-Q101 qualified | Designed for ultra-high-speed interfaces (USB 3.0, MIPI); lacks automotive qualification and surge rating | Choose only for consumer-grade high-speed digital interfaces where AEC-Q101 and 200 W PPP are not required. |
Compared with SMAJ10A-E3/57T and TPD2E001DRYR, SMF10A-HM3_A18 delivers optimal balance of low clamping (17 V), compact DO-219AB size, and AEC-Q101 validation - making it the preferred choice for space-constrained automotive and industrial signal-line protection where both ESD robustness and signal fidelity are critical.
Availability
SMF10A-HM3_A18 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial USB peripherals, and sensor interface modules requiring stable component supply and long-term lifecycle assurance.
Supply support for SMF10A-HM3_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 data line protection with AEC-Q101 qualification, low capacitance, and fast clamping - engineered specifically for next-generation automotive connectivity and industrial IoT edge nodes.
FAQ
What is the maximum clamping voltage of SMF10A-HM3_A18 at its rated peak pulse current?
The SMF10A-HM3_A18 has a maximum clamping voltage (VC) of 17 V when subjected to its rated peak pulse current (IPPM) of 11.8 A under a 10/1000 μs waveform. This value is guaranteed across the full operating temperature range (–65 °C to +175 °C) and ensures downstream ICs remain within safe voltage limits during ESD events. The SMF10A-HM3_A18 achieves this with low dynamic impedance and fast avalanche response.
Is SMF10A-HM3_A18 suitable for USB 2.0 interface protection?
Yes, SMF10A-HM3_A18 is suitable for USB 2.0 interface protection due to its 562 pF typical capacitance at 0 V and 17 V clamping voltage, which preserve signal integrity at 480 Mbps without violating USB eye diagram masks. Its unidirectional configuration matches standard USB data line grounding schemes, and its AEC-Q101 qualification supports automotive USB implementations. The SMF10A-HM3_A18 is commonly deployed on D+ and D− lines near connectors.
Does SMF10A-HM3_A18 meet automotive reliability standards?
Yes, SMF10A-HM3_A18 is AEC-Q101 qualified, having passed stress tests including human body model (HBM) >8 kV, temperature cycling, high-temperature reverse bias, and mechanical shock. It is rated for continuous operation from –65 °C to +175 °C and supports automotive under-hood and cabin applications. The SMF10A-HM3_A18 is documented in Vishay's official AEC-Q101 certification report for the SMF family.
What is the package type and footprint compatibility of SMF10A-HM3_A18?
SMF10A-HM3_A18 uses the DO-219AB package (also known as SMF), measuring 3.9 × 1.9 × 1.08 mm. It is footprint-compatible with SOD-123W per Vishay's packaging documentation and fits standard SOD-123 land patterns with minor pad width adjustment. The cathode is marked by a bar on the top surface, and the device supports both wave and reflow soldering per J-STD-020 MSL level 1. The SMF10A-HM3_A18 requires no special stencil or placement tooling.
How does SMF10A-HM3_A18 compare to generic 10 V TVS diodes in ESD performance?
SMF10A-HM3_A18 exceeds generic 10 V TVS diodes with ±30 kV contact/air ESD immunity per IEC 61000-4-2, sub-1 ns response time enabled by "Low Noise" technology, and guaranteed 17 V clamping at 11.8 A. Unlike many generic parts, it is AEC-Q101 qualified and specified for 175 °C junction operation. The SMF10A-HM3_A18 also offers tighter parameter distribution (e.g., VRWM tolerance ±0%) and validated long-term stability under repeated surge stress.
SMF10A-HM3_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-HM3_A18 FAQ
1.How can I place an order for SMF10A-HM3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF10A-HM3_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-HM3_A18 reliable?
The price and inventory of SMF10A-HM3_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-HM3_A18 is usually 5 days.
3.What payment methods are accepted for SMF10A-HM3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF10A-HM3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF10A-HM3_A18?
SMF10A-HM3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF10A-HM3_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-HM3_A18?
For technical support, including SMF10A-HM3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF10A-HM3_A18 requirements.
6.How does Aetrix verify that SMF10A-HM3_A18 is sourced from the original manufacturer or authorized distributors?
All SMF10A-HM3_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-HM3_A18 meets industry standards.
7.What is the process for return or replacement of SMF10A-HM3_A18?
All SMF10A-HM3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF10A-HM3_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-HM3_A18 part is unused and in its original packaging.
Return procedure for SMF10A-HM3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF10A-HM3_A18 Tags
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