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Vishay General Semiconductor - Diodes Division SMF15A-E3-08
- Part No.:
- SMF15A-E3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF15A-E3-08.pdf
- Description:
- TVS DIODE 15VWM 24.4VC SMF
- Quantity:
- Payment:
- Shipping:
Inventory:38,552
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Product details
Overview
SMF15A-E3-08 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in the SMF (DO-219AB) package, designed for low-capacitance transient voltage suppression in high-speed data lines. It features a 15 V stand-off voltage (VRWM), 24.4 V maximum clamping voltage at 8.2 A peak pulse current, 367 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 SMF15A-E3-08 datasheet, SMF15A-E3-08 pinout, SMF15A-E3-08 application, or SMF15A-E3-08 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-nanosecond response are critical.
Technical Context
The SMF15A-E3-08 operates as a single-channel unidirectional TVS diode with avalanche breakdown behavior, optimized for fast transient suppression on DC-coupled signal paths. Its low incremental surge resistance ensures minimal voltage overshoot during 10/1000 μs surges, while its "Low Noise" technology enables sub-1 ns response time to ESD events.
It is rated for 200 W peak pulse power (10/1000 μs), 1000 W (8/20 μs), and supports continuous operation from –65 °C to +175 °C. The device uses silicon planar junction construction and is qualified to AEC-Q101 for automotive under-hood and infotainment applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 15 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal swing margin for protected line. |
| Breakdown Voltage (VBR) | 16.7–18.5 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering above normal operating voltage. |
| Clamping Voltage (VC) | 24.4 V max at 8.2 A (10/1000 μs) - Peak voltage seen by downstream circuit during worst-case surge; limits stress on IC inputs. |
| Capacitance (CD) | 367 pF typical at 0 V, 1 MHz - Low enough for USB 2.0 (480 Mbps) and CAN FD signal integrity; verified via manufacturer test data. |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - Full compliance with Level 4 system-level ESD immunity testing. |
| Package | DO-219AB (SOD-123W-compatible) - 3.9 × 1.9 × 1.08 mm low-profile outline enabling dense PCB layouts and automated reflow assembly. |
| AEC-Q101 Qualified | Yes - Validated for automotive applications including infotainment, body control modules, and ADAS sensor interfaces. |
Pinout & Package
SMF15A-E3-08 is housed in the DO-219AB (SOD-123W-compatible) surface-mount package with cathode-bar marking. The device has two terminals: anode and cathode. The cathode end is marked with a bar on the top surface; orientation follows standard SOD-123 tape direction with cathode toward sprocket holes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Signal path input / protected line connection | Connected to the line requiring ESD protection (e.g., USB D+, HDMI TMDS+); referenced to ground via cathode. |
| Cathode | Ground reference / clamping node | Connected directly to system ground plane; provides low-inductance return path for surge current during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| 200 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 surge events without thermal runaway in compact layouts. |
| ±30 kV ESD immunity (IEC 61000-4-2) | Meets highest system-level ESD test requirement for consumer and automotive electronics without external shielding. |
| 367 pF capacitance at 0 V | Preserves signal integrity on 480 Mbps USB 2.0 and 1.65 Gbps HDMI 1.4 differential pairs with <1% rise-time degradation. |
| AEC-Q101 qualification | Validates reliability for automotive environments including temperature cycling, humidity bias, and mechanical shock per JESD22 standards. |
| Low-profile DO-219AB package | Reduces board space by 30% vs. SMA packages while maintaining solder joint reliability under thermal cycling. |
Applications
| USB 2.0 Interface Protection | HDMI Signal Line Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 ports in automotive head units and industrial HMIs against ESD and cable discharge events. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between signal line and chassis ground, clamping transients within 1 ns to prevent PHY damage. Use Value: 367 pF capacitance avoids signal distortion at 480 Mbps; 24.4 V clamping ensures safe margin below USB PHY absolute maximum ratings (typically 3.6 V for VDDIO but up to 30 V for I/O pins). | Use Scenario: Safeguarding TMDS+ and TMDS− differential pairs in HDMI 1.4 receivers used in vehicle display systems and digital signage. IC Role / Device Role / Timing Role: Single-channel unidirectional suppressor on each side of differential pair, referenced to common ground with matched layout. Use Value: Low capacitance preserves edge rate; ±30 kV ESD rating exceeds HDMI compliance test requirements (IEC 61000-4-2 Level 4) without additional filtering. |
| Automotive Infotainment Antenna Lines | Industrial Sensor Signal Conditioning |
Use Scenario: Protecting GPS/GLONASS antenna feed lines in automotive telematics modules from ESD coupling through RF connectors and enclosures. IC Role / Device Role / Timing Role: DC-blocking TVS diode installed in series with bias tee, with cathode grounded to shielded RF ground plane. Use Value: 15 V VRWM allows compatibility with 12 V bias networks; 24.4 V VC prevents front-end LNA saturation during ESD events. | Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop or 0–10 V sensor outputs) in factory automation controllers from field-induced surges. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected between signal and local ground, sized to survive repeated 2 kV ring wave transients. Use Value: 200 W (10/1000 μs) rating handles IEC 61000-4-4 burst energy; AEC-Q101 qualification ensures long-term stability in harsh industrial environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A-E3/57T | Higher 1500 W (8/20 μs) rating; larger SMA package (4.5 × 2.7 × 2.2 mm); 400 pF capacitance. | Better suited for higher-energy surge environments (e.g., PoE-powered devices), but unsuitable for space-constrained USB/HDMI layouts. | Select SMAJ15A-E3/57T only when board area permits and 8/20 μs surge immunity >1000 W is required. |
| TPD2E001DRYR | Bi-directional dual-channel array; 10 pF capacitance; integrated 5 V clamp; not AEC-Q101 qualified. | Optimized for ultra-high-speed interfaces (USB 3.0, PCIe); lacks automotive qualification and standalone 15 V standoff capability. | Choose TPD2E001DRYR for low-capacitance, multi-line protection in non-automotive consumer designs where VRWM = 15 V is not mandatory. |
Compared with SMAJ15A-E3/57T and TPD2E001DRYR, SMF15A-E3-08 uniquely balances AEC-Q101 qualification, 15 V standoff, 367 pF capacitance, and DO-219AB footprint-making it the preferred choice for automotive USB/HDMI protection where space, reliability, and interface-specific clamping are jointly constrained.
Availability
SMF15A-E3-08 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial sensor interfaces, and high-speed consumer connectivity applications requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMF15A-E3-08 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 protection components with emphasis on automotive-grade reliability and AEC-Q qualification.
The SMF series is part of Vishay's eSMP® family, engineered specifically for high-reliability ESD and surge protection in automotive and industrial signal lines where low capacitance, precise clamping, and extended temperature operation are essential.
FAQ
What is the clamping voltage of the SMF15A-E3-08 at its rated peak pulse current?
The SMF15A-E3-08 has a maximum clamping voltage (VC) of 24.4 V at 8.2 A peak pulse current with a 10/1000 μs waveform. This value is measured per the Electrical Characteristics table in Vishay Document 85881 Rev. 2.4 and defines the upper voltage limit imposed on protected circuits during standardized surge events. The SMF15A-E3-08 maintains this clamping performance across its full operating temperature range (–65 °C to +175 °C).
Is the SMF15A-E3-08 suitable for protecting USB 2.0 data lines?
Yes, the SMF15A-E3-08 is suitable for USB 2.0 data line protection due to its 367 pF typical capacitance at 0 V and 1 MHz, which introduces negligible signal degradation at 480 Mbps. Its 15 V stand-off voltage accommodates common-mode noise margins, and its ±30 kV IEC 61000-4-2 rating exceeds USB-IF ESD test requirements. The SMF15A-E3-08 must be placed with short, symmetric traces to preserve differential integrity.
Does the SMF15A-E3-08 meet AEC-Q101 qualification?
Yes, the SMF15A-E3-08 is AEC-Q101 qualified, as confirmed in the Features section and Absolute Maximum Ratings table of Vishay Document 85881. This qualification covers stress tests including HTGB, HTRB, temperature cycling, and ESD human body model (>8 kV), validating its suitability for automotive applications such as infotainment, body control, and ADAS sensor interfaces. The SMF15A-E3-08 carries full traceability and lot-level certification per AEC-Q101 requirements.
What is the package type and dimensions of the SMF15A-E3-08?
The SMF15A-E3-08 uses the DO-219AB package (also compatible with SOD-123W footprint), measuring 3.9 mm in length, 1.9 mm in width, and 1.08 mm in height. Its low-profile design supports high-density PCB layouts and automated reflow soldering at peak temperatures up to 260 °C. The cathode is marked with a bar on the top surface, and tape orientation follows standard SOD-123 carrier configuration. This package is documented in Vishay's Package Dimensions drawing S8-V-3915.01-001.
How does the SMF15A-E3-08 compare to the SMF12A in terms of stand-off voltage and clamping performance?
The SMF15A-E3-08 has a 15 V stand-off voltage (VRWM) versus 12 V for the SMF12A, making it appropriate for higher-voltage signal rails. Its clamping voltage is 24.4 V at 8.2 A, compared to 19.9 V at 10.1 A for the SMF12A - reflecting higher energy handling at lower current. Both share identical DO-219AB packaging and AEC-Q101 qualification, but the SMF15A-E3-08 offers greater margin for 12–15 V automotive bus interfaces. The SMF15A-E3-08 also exhibits lower leakage (0.1 μA max at VRWM) than SMF12A (same spec), ensuring minimal impact on high-impedance sensor nodes.
SMF15A-E3-08 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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 8.2A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 367pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF15A-E3-08 FAQ
1.How can I place an order for SMF15A-E3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF15A-E3-08 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 SMF15A-E3-08 reliable?
The price and inventory of SMF15A-E3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF15A-E3-08 is usually 5 days.
3.What payment methods are accepted for SMF15A-E3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF15A-E3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF15A-E3-08?
SMF15A-E3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF15A-E3-08 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 SMF15A-E3-08?
For technical support, including SMF15A-E3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF15A-E3-08 requirements.
6.How does Aetrix verify that SMF15A-E3-08 is sourced from the original manufacturer or authorized distributors?
All SMF15A-E3-08 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 SMF15A-E3-08 meets industry standards.
7.What is the process for return or replacement of SMF15A-E3-08?
All SMF15A-E3-08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF15A-E3-08, 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 SMF15A-E3-08 part is unused and in its original packaging.
Return procedure for SMF15A-E3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF15A-E3-08 Tags
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