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Vishay General Semiconductor - Diodes Division SMF10A-M3-08
- Part No.:
- SMF10A-M3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF10A-M3-08.pdf
- Description:
- TVS DIODE 10VWM 17VC SMF
- Quantity:
- Payment:
- Shipping:
Inventory:5,760
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Product details
Overview
SMF10A-M3-08 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. 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 use.
For engineers reviewing the SMF10A-M3-08 datasheet, SMF10A-M3-08 pinout, SMF10A-M3-08 application, or SMF10A-M3-08 equivalent, this device is selected for robust ESD hardening of USB 2.0, HDMI, CAN FD, and automotive sensor interfaces where low clamping voltage and sub-1 ns response time are critical to protect downstream ICs without signal integrity degradation.
Technical Context
The SMF10A-M3-08 operates as a single-channel unidirectional TVS diode with avalanche breakdown behavior, optimized for fast transient suppression on DC-biased signal paths. Its low incremental surge resistance enables tight clamping performance under 10/1000 μs pulses, while its SOD-123W-compatible DO-219AB package supports automated reflow assembly and meets MSL level 1 requirements.
It delivers 200 W peak pulse power per IEC 61000-4-5 (10/1000 μs), maintains stable reverse leakage (<0.1 μA at VRWM = 10 V), and sustains operation across -65 °C to +175 °C ambient temperature-enabling deployment in engine control units, infotainment head units, and ADAS camera modules without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRWM) | 10 V - Maximum continuous reverse operating voltage before conduction begins; sets minimum system bias margin for protected line. |
| Clamping Voltage (VC) | 17 V at IPPM = 11.8 A - Peak voltage seen by protected IC during worst-case 10/1000 μs surge; ensures safe margin below IC absolute max ratings. |
| Junction Capacitance (CD) | 562 pF at VR = 0 V, f = 1 MHz - Low enough for USB 2.0 (480 Mbps) and CAN FD (5 Mbps) without measurable signal rise-time degradation. |
| ESD Immunity | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - Meets highest industrial and automotive ESD stress levels without failure or parametric shift. |
| Peak Pulse Power | 200 W (10/1000 μs) - Sustains repeated transients in battery-fed systems such as LIN bus nodes or body control modules. |
| AEC-Q101 Qualified | Qualified per AEC-Q101 Rev D - Validated for automotive under-hood and cabin applications including vibration, thermal cycling, and humidity exposure. |
| Package | DO-219AB (SOD-123W footprint) - 3.9 mm × 1.9 mm × 1.08 mm low-profile outline compatible with standard SMT pick-and-place and reflow profiles. |
Pinout & Package
SMF10A-M3-08 uses the DO-219AB (SOD-123W-compatible) surface-mount package: cathode-bar marked, single-channel unidirectional configuration. Dimensions: 3.9 mm length × 1.9 mm width × 1.08 mm height; weight: 15 mg; MSL level 1; reflow peak temperature ≤ 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input side of protected line | Connected to signal trace upstream of IC input; conducts surge current toward ground when clamped. |
| Cathode | Ground reference node | Connected directly to low-inductance chassis or PCB ground plane; defines clamping threshold relative to GND. |
Key Features
| Feature | Design Value |
|---|---|
| "Low Noise" fast-response technology | Sub-nanosecond response time ensures clamping activation before ESD pulse edge reaches protected IC input. |
| Low incremental surge resistance | Minimizes voltage overshoot during high-di/dt events, enabling tighter clamping than standard TVS diodes. |
| Wave and reflow solderable | Compatible with J-STD-020 Class 2 reflow profiles up to 260 °C peak, supporting high-volume automotive PCB assembly. |
| AEC-Q101 qualified variant | Validated for automotive-grade reliability including HTOL, temperature cycling, and mechanical shock per AEC-Q101. |
| UL 94 V-0 molding compound | Flame-retardant encapsulation required for under-hood and safety-critical vehicle subsystems. |
Applications
| Automotive CAN FD Bus Protection | USB 2.0 Interface Hardening |
|---|---|
Use Scenario: Protecting CAN FD transceivers in ADAS domain controllers exposed to ISO 10605 and IEC 61000-4-2 ESD events. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between CANH/CANL lines and ground, clamping transients before they reach transceiver inputs. Use Value: Maintains <17 V clamping at 11.8 A while adding only 562 pF loading-preserving signal integrity at 5 Mbps bit rates without timing skew. | Use Scenario: Safeguarding USB 2.0 D+/D- lines in infotainment head units against hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Bidirectional protection achieved via two SMF10A-M3-08 devices (anode-to-anode), providing symmetric clamping on differential pair. Use Value: Enables full-speed USB 2.0 compliance (480 Mbps) with <1 ns response and no insertion loss penalty due to low capacitance and matched layout. |
| Engine Control Unit (ECU) Sensor Inputs | Industrial RS-485 Node Protection |
Use Scenario: Shielding analog sensor inputs (e.g., oxygen, knock, MAP sensors) from load dump and alternator ripple-induced transients. IC Role / Device Role / Timing Role: Standoff-rated TVS placed at connector entry point, shunting surges before reaching precision ADC front-end. Use Value: 10 V VRWM aligns with common 5 V or 12 V sensor supply rails; 175 °C operating range ensures functionality in under-hood environments. | Use Scenario: Protecting RS-485 transceivers in factory automation PLCs subjected to long-cable ESD coupling and lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional clamp on A/B lines referenced to local ground, limiting voltage excursion during 10/1000 μs surges. Use Value: 200 W peak pulse power rating handles repetitive surges in noisy industrial settings; DO-219AB package withstands mechanical vibration per AEC-Q200. |
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 at 12.3 A); SMA (DO-214AC) package; 1.5× larger footprint. | Less suitable for space-constrained USB or CAN FD layouts; better for higher-energy 8/20 μs surges (1500 W). | Select SMAJ10A only if board area allows larger package and system requires higher PPP rating over tighter clamping. |
| TPD2E001DRYR | Integrated dual-channel bidirectional ESD array (0.8 pF/channel); 5 V VRWM; not AEC-Q101 qualified. | Optimized for ultra-high-speed digital interfaces (e.g., MIPI, PCIe); lacks automotive qualification and high-power surge handling. | Choose TPD2E001DRYR for mobile or consumer electronics with strict capacitance limits; avoid in automotive or industrial surge-prone environments. |
Compared with SMAJ10A and TPD2E001DRYR, SMF10A-M3-08 uniquely balances automotive qualification, compact DO-219AB packaging, 17 V clamping, and 562 pF capacitance-making it the preferred choice for cost-sensitive, space-constrained, and thermally demanding automotive signal line protection.
Availability
SMF10A-M3-08 is available at Aetrix Electronics and suitable for automotive ECUs, industrial RS-485 networks, USB 2.0 peripherals, and ADAS camera modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SMF10A-M3-08 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 circuit protection components with emphasis on reliability, efficiency, and automotive-grade validation.
The SMF series targets high-reliability transient suppression in automotive and industrial systems, engineered specifically to meet AEC-Q101, IEC 61000-4-2, and ISO 10605 requirements while maintaining low capacitance and tight clamping performance.
FAQ
What is the clamping voltage specification for SMF10A-M3-08?
The SMF10A-M3-08 has a maximum reverse clamping voltage (VC) of 17 V at a peak pulse current (IPPM) of 11.8 A using a 10/1000 μs waveform. This value is measured under standardized surge conditions and defines the upper voltage limit imposed on protected circuitry during transient events. The clamping performance is guaranteed across the full operating temperature range of -65 °C to +175 °C, making SMF10A-M3-08 suitable for under-hood automotive applications where thermal stability is critical.
Is SMF10A-M3-08 AEC-Q101 qualified?
Yes, SMF10A-M3-08 is AEC-Q101 qualified per Rev D, having passed stress tests including high-temperature operating life (HTOL), temperature cycling, mechanical shock, and ESD robustness. This qualification confirms suitability for automotive applications such as engine control units, body electronics, and ADAS subsystems. The qualification applies specifically to the SMF10A-M3-08 variant-not generic SMF10A part numbers-and is documented in Vishay's official AEC-Q101 report referenced in datasheet revision 2.4.
What is the junction capacitance of SMF10A-M3-08 and how does it affect high-speed signals?
The SMF10A-M3-08 exhibits 562 pF typical junction capacitance at 0 V reverse bias and 1 MHz frequency. This value remains stable across operating voltages and is low enough to avoid measurable rise-time degradation on USB 2.0 (480 Mbps) and CAN FD (5 Mbps) lines when properly laid out. Unlike higher-capacitance TVS devices, SMF10A-M3-08 preserves signal integrity without requiring complex impedance matching or trace-length compensation-directly supporting reliable high-speed interface protection in compact automotive PCBs.
Can SMF10A-M3-08 be used for bidirectional protection?
SMF10A-M3-08 is a unidirectional TVS diode, but bidirectional protection can be implemented using two devices in an anode-to-anode configuration. This arrangement provides symmetrical clamping on differential lines like USB D+/D- or RS-485 A/B, with each SMF10A-M3-08 handling one polarity of transient. The solution retains the 17 V clamping level and 562 pF capacitance per path, and is widely adopted in automotive infotainment and telematics designs where discrete, qualified, and layout-flexible protection is required.
What package type does SMF10A-M3-08 use and what are its key mechanical properties?
SMF10A-M3-08 uses the DO-219AB package (also known as eSMP®), measuring 3.9 mm × 1.9 mm × 1.08 mm with a 15 mg mass. It features a cathode bar marking, complies with SOD-123W footprint compatibility, and is rated MSL level 1 for unlimited floor life. The package uses UL 94 V-0 flame-retardant molding compound and supports peak reflow temperatures up to 260 °C, meeting IPC/JEDEC J-STD-020 standards for high-volume automotive PCB assembly. Its low profile and thermal resistance (RthJA = 180 K/W) make SMF10A-M3-08 ideal for dense, thermally constrained layouts.
SMF10A-M3-08 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-M3-08 FAQ
1.How can I place an order for SMF10A-M3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF10A-M3-08 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-M3-08 reliable?
The price and inventory of SMF10A-M3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF10A-M3-08 is usually 5 days.
3.What payment methods are accepted for SMF10A-M3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF10A-M3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF10A-M3-08?
SMF10A-M3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF10A-M3-08 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-M3-08?
For technical support, including SMF10A-M3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF10A-M3-08 requirements.
6.How does Aetrix verify that SMF10A-M3-08 is sourced from the original manufacturer or authorized distributors?
All SMF10A-M3-08 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-M3-08 meets industry standards.
7.What is the process for return or replacement of SMF10A-M3-08?
All SMF10A-M3-08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF10A-M3-08, 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-M3-08 part is unused and in its original packaging.
Return procedure for SMF10A-M3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF10A-M3-08 Tags
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