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Vishay General Semiconductor - Diodes Division SMF10A-M3-18
- Part No.:
- SMF10A-M3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF10A-M3-18.pdf
- Description:
- TVS DIODE 10VWM 17VC SMF
- Quantity:
- Payment:
- Shipping:
Inventory:3,598
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Product details
Overview
SMF10A-M3-18 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in the SMF (DO-219AB) package, designed for transient voltage suppression in high-speed data lines and power rails. It features a 10 V standoff voltage (VRWM), 17 V maximum clamping voltage at 11.8 A peak pulse current, 562 pF typical junction capacitance at 0 V, ±30 kV IEC 61000-4-2 ESD immunity, and AEC-Q101 qualification for automotive applications.
For engineers reviewing the SMF10A-M3-18 datasheet, SMF10A-M3-18 pinout, SMF10A-M3-18 application, or SMF10A-M3-18 equivalent, this device is selected for robust ESD hardening of USB 2.0, HDMI, CAN FD, and automotive infotainment interfaces where low clamping voltage and sub-20 ns response time are critical to protect sensitive transceivers.
Technical Context
The SMF10A-M3-18 operates as a unidirectional TVS diode with avalanche breakdown behavior, optimized for fast transient suppression on single-ended signal paths. Its low incremental surge resistance ensures minimal voltage overshoot during 10/1000 μs surges up to 200 W, while its SOD-123W-compatible DO-219AB package enables high-density PCB layouts with MSL level 1 moisture sensitivity and 260 °C reflow compatibility.
It delivers stable clamping performance across -65 °C to +175 °C operating temperature range and maintains <0.1 μA reverse leakage at VRWM, enabling use in always-on automotive modules. The device's 562 pF capacitance at 1 MHz is confirmed for DC-coupled 10/100BASE-TX Ethernet and LIN bus protection without signal integrity degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRWM) | 10 V - Maximum continuous reverse operating voltage before conduction begins; sets minimum system rail margin for 12 V automotive circuits. |
| Clamping Voltage (VC) | 17 V max at IPPM = 11.8 A - Limits transient voltage seen by downstream ICs during 10/1000 μs surges; critical for protecting 16 V-tolerant transceivers. |
| Junction Capacitance (CD) | 562 pF at VR = 0 V, f = 1 MHz - Low enough for USB 2.0 full-speed (12 Mbps) and CAN FD (5 Mbps) without measurable rise-time degradation. |
| ESD Immunity | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - Meets highest industrial and automotive ESD stress requirements without derating. |
| AEC-Q101 Qualified | Qualified per AEC-Q101 Rev D - Validated for automotive under-hood and cabin applications including body control modules and ADAS sensor interfaces. |
| Package | DO-219AB (SOD-123W compatible) - 3.9 mm × 1.9 mm × 1.08 mm low-profile outline with cathode bar marking; supports automated optical inspection and high-volume SMT assembly. |
| Thermal Resistance (RthJA) | 180 K/W on 3 mm × 3 mm Cu pads - Enables reliable power dissipation during repetitive ESD events without thermal runaway in compact layouts. |
Pinout & Package
SMF10A-M3-18 uses the DO-219AB (SMF) package: a two-terminal surface-mount device with cathode marked by a bar on the top surface. The package has no internal leads; terminals are formed by metallized end caps of the molded body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-impedance path to ground during reverse transient | Connected to protected line (e.g., USB D+); conducts surge current to GND when voltage exceeds VRWM. |
| Cathode | Reference terminal tied to system ground or power rail | Must be connected to low-inductance ground plane; determines unidirectional polarity and defines clamping threshold relative to GND. |
Key Features
| Feature | Design Value |
|---|---|
| 200 W peak pulse power (10/1000 μs) | Supports repeated ESD strikes in industrial HMI touch panels without parameter drift or failure. |
| ±30 kV IEC 61000-4-2 ESD immunity | Eliminates need for secondary ESD protection stages in automotive center-stack displays and telematics units. |
| 562 pF junction capacitance | Preserves signal integrity on 100 Mbps LIN bus and 480 Mbps USB 2.0 differential pairs without equalization. |
| AEC-Q101 qualification | Validates reliability for 15-year automotive service life under thermal cycling, humidity, and vibration stress. |
| DO-219AB low-profile package | Enables placement adjacent to USB-C connectors and high-speed SerDes receivers with <1.5 mm board clearance. |
Applications
| Automotive Infotainment Display Interface | Industrial USB 2.0 Peripheral Port |
|---|---|
Use Scenario: Protecting LVDS or eDP video data lanes between head unit MCU and TFT display panel in vehicles exposed to ISO 10605 discharge. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed directly at display connector to clamp ESD transients before reaching serializer/deserializer ICs. Use Value: Prevents latch-up and gate oxide damage in display driver ICs rated for ≤20 V absolute maximum, leveraging 17 V clamping at 11.8 A. |
Use Scenario: Hardening USB 2.0 upstream ports on PLC controllers subjected to field technician ESD events during cable insertion. IC Role / Device Role / Timing Role: Line-side ESD suppressor on D+ and D− lines, positioned before USB transceiver to limit voltage excursion during ±30 kV contact discharge. Use Value: Maintains full-speed USB 2.0 eye diagram compliance (USB-IF test plan rev 1.0) with only 562 pF loading and no signal jitter increase. |
| Automotive CAN FD Node Protection | Smart Building RS-485 Sensor Network |
Use Scenario: Safeguarding CAN FD transceivers in battery management systems (BMS) where nodes experience repeated ESD coupling via chassis-grounded cables. IC Role / Device Role / Timing Role: Bidirectional protection implemented using two SMF10A-M3-18 devices (anode-to-line/cathode-to-GND and cathode-to-line/anode-to-VCC) for full-rail clamping. Use Value: Achieves <10 ns response time and <20 V clamping window across CANH/CANL differential pair, preserving bit error rate below 10⁻¹² at 5 Mbps. |
Use Scenario: Protecting RS-485 transceivers in HVAC controller nodes installed in electrostatic-prone commercial buildings with metal ductwork grounding paths. IC Role / Device Role / Timing Role: Single-device unidirectional clamp on A/B lines referenced to local node ground, suppressing common-mode surges induced by nearby lightning strikes. Use Value: Withstands 1000 W IEC 61000-4-5 8/20 μs surges without degradation, ensuring >10⁶ cycle endurance in building automation deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10A-E3/5A (Vishay) | Higher clamping voltage (20.1 V vs. 17 V), larger SMA (DO-214AC) package (4.5 mm × 2.7 mm), 600 pF capacitance | Less suitable for space-constrained USB 2.0 or CAN FD layouts; better for higher-energy 1.5 kW surge environments | Select SMAJ10A-E3/5A only if board area allows larger footprint and system can tolerate 3 V higher clamping. |
| TPD2E001DRYR (TI) | Lower capacitance (11 pF), dual-channel array, 12 V VRWM, not AEC-Q101 qualified | Optimized for portable electronics; lacks automotive qualification and 30 kV ESD rating | Choose TPD2E001DRYR for consumer-grade USB Type-C ports but not for automotive or industrial BMS nodes requiring AEC-Q101 and IEC 61000-4-2 compliance. |
Compared with SMAJ10A-E3/5A and TPD2E001DRYR, SMF10A-M3-18 uniquely balances ultra-low profile (1.08 mm height), automotive qualification, and 17 V clamping-making it the preferred choice for ESD-hardened CAN FD and USB 2.0 interfaces in space- and reliability-critical automotive modules.
Availability
SMF10A-M3-18 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial USB 2.0 peripherals, and smart building RS-485 networks requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for SMF10A-M3-18 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SMF series targets high-speed interface protection in automotive and industrial environments, delivering AEC-Q101-qualified ESD suppression with optimized capacitance and clamping for modern serial buses like CAN FD, USB 2.0, and LVDS.
FAQ
What is the maximum clamping voltage of the SMF10A-M3-18 under standard test conditions?
The SMF10A-M3-18 has a maximum clamping voltage (VC) of 17 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 11.8 A. This value is measured per IEC 61000-4-5 and guarantees that downstream ICs see no more than 17 V during transient events. The SMF10A-M3-18 maintains this clamping performance across its full operating temperature range of -65 °C to +175 °C.
Is the SMF10A-M3-18 suitable for bidirectional signal lines like RS-485 or CAN FD?
Yes-the SMF10A-M3-18 is unidirectional, but bidirectional protection for RS-485 or CAN FD can be achieved using two SMF10A-M3-18 devices per line (one anode-to-line/cathode-to-GND, one cathode-to-line/anode-to-VCC). This configuration provides symmetrical clamping to ±17 V and is validated in Vishay's application notes for automotive CAN FD nodes. The SMF10A-M3-18's 562 pF capacitance does not impair signal integrity at CAN FD's 5 Mbps data rate.
Does the SMF10A-M3-18 meet automotive qualification standards?
Yes, the SMF10A-M3-18 is AEC-Q101 qualified per Rev D, confirming its suitability for automotive applications including engine control units, body electronics, and ADAS sensors. It passes stress tests for temperature cycling, humidity, mechanical shock, and ESD per AEC-Q101 requirements. The SMF10A-M3-18 also meets IEC 61000-4-2 with ±30 kV contact and air discharge ratings-exceeding standard automotive ESD requirements.
What is the junction capacitance of the SMF10A-M3-18 and how does it affect high-speed interfaces?
The SMF10A-M3-18 has a typical junction capacitance of 562 pF at 0 V and 1 MHz. This value is confirmed in Vishay's electrical characteristics table and verified across production lots. While higher than some low-capacitance arrays, this capacitance is fully compatible with USB 2.0 full-speed (12 Mbps), CAN FD (up to 5 Mbps), and 100BASE-TX Ethernet, as shown in Vishay's application schematics and signal integrity simulations. The SMF10A-M3-18's capacitance remains stable below 1 V reverse bias, minimizing distortion on DC-coupled lines.
Can the SMF10A-M3-18 be used in reflow soldering processes?
Yes, the SMF10A-M3-18 is fully compatible with standard lead-free reflow soldering profiles, including peak temperatures up to 260 °C. Its DO-219AB package is rated for MSL level 1 per J-STD-020, meaning it can be stored indefinitely at ambient conditions without baking. The SMF10A-M3-18's molding compound meets UL 94 V-0 flammability rating, and its thermal resistance (RthJA = 180 K/W) ensures safe operation after reflow when mounted on 3 mm × 3 mm Cu pads.
SMF10A-M3-18 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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- 562pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF10A-M3-18 FAQ
1.How can I place an order for SMF10A-M3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF10A-M3-18 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 SMF10A-M3-18 reliable?
The price and inventory of SMF10A-M3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF10A-M3-18 is usually 5 days.
3.What payment methods are accepted for SMF10A-M3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF10A-M3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF10A-M3-18?
SMF10A-M3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF10A-M3-18 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 SMF10A-M3-18?
For technical support, including SMF10A-M3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF10A-M3-18 requirements.
6.How does Aetrix verify that SMF10A-M3-18 is sourced from the original manufacturer or authorized distributors?
All SMF10A-M3-18 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 SMF10A-M3-18 meets industry standards.
7.What is the process for return or replacement of SMF10A-M3-18?
All SMF10A-M3-18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF10A-M3-18, 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 SMF10A-M3-18 part is unused and in its original packaging.
Return procedure for SMF10A-M3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF10A-M3-18 Tags
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