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Vishay General Semiconductor - Diodes Division SMF14A-HE3-08
- Part No.:
- SMF14A-HE3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF14A-HE3-08.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:29,998
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Product details
Overview
SMF14A-HE3-08 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 14 V stand-off voltage (VRWM), 23.2 V maximum clamping voltage at 8.6 A peak pulse current, 392 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 SMF14A-HE3-08 datasheet, SMF14A-HE3-08 pinout, SMF14A-HE3-08 application, or SMF14A-HE3-08 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-400 pF capacitance are critical to signal integrity.
Technical Context
The SMF14A-HE3-08 operates as a single-channel unidirectional TVS diode with avalanche breakdown behavior, optimized for fast response (<1 ns) to ESD transients per IEC 61000-4-2. Its low incremental surge resistance ensures minimal voltage overshoot during 8.3 ms half-sine surge events up to 50 A IFSM.
It delivers 200 W peak pulse power (10/1000 μs) and 1000 W (8/20 μs), with thermal resistance RthJA = 180 K/W on standard epoxy-glass PCBs. The device maintains stable reverse leakage (<0.1 μA at VRWM = 14 V) across -65 °C to +175 °C operating range, supporting under-hood automotive deployment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 14 V - Maximum continuous reverse voltage before significant leakage; defines minimum system operating margin for protected line. |
| Clamping Voltage (VC) | 23.2 V at IPPM = 8.6 A - Peak voltage seen by downstream IC during 10/1000 μs surge; ensures safe operation of 12 V-rated receivers. |
| Capacitance (CD) | 392 pF at 0 V, 1 MHz - Low enough for USB 2.0 (480 Mbps) and CAN FD (5 Mbps) without signal degradation. |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - Meets highest industrial and automotive ESD immunity requirements. |
| Peak Pulse Power | 200 W (10/1000 μs), 1000 W (8/20 μs) - Supports both ESD and lightning-induced surges per IEC 61000-4-5. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including HBM >8 kV and temperature cycling (-65 °C to +175 °C). |
| Package | DO-219AB (SOD-123W compatible) - 3.9 mm × 1.9 mm × 1.08 mm low-profile footprint enabling dense PCB layouts. |
Pinout & Package
SMF14A-HE3-08 uses the DO-219AB (SOD-123W-compatible) surface-mount package: cathode-marked anode-cathode configuration with 2 terminals. Molded plastic body, UL 94 V-0 rated, MSL level 1, reflow-compatible up to 260 °C peak.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Input side of protected line | Connected to signal trace upstream of IC; carries surge current into diode during negative transients. |
| Cathode (Pin 2) | Ground reference node | Connected to low-impedance chassis or signal ground; completes clamping path during positive ESD events. |
Key Features
| Feature | Design Value |
|---|---|
| Low clamping voltage | 23.2 V at 8.6 A enables protection of 12 V logic without overvoltage damage to downstream receivers. |
| Sub-400 pF capacitance | 392 pF at 0 V preserves signal rise time and eye diagram integrity in USB 2.0 and CAN FD links. |
| ±30 kV ESD immunity | Fully compliant with IEC 61000-4-2 Level 4 - eliminates need for secondary board-level ESD mitigation. |
| AEC-Q101 qualification | Validated for automotive under-hood environments including thermal cycling, humidity, and mechanical shock. |
| Wave/reflow solderable | Compatible with standard SMT processes including lead-free reflow (peak 260 °C) and wave soldering. |
Applications
| Automotive Infotainment | Industrial USB 2.0 Interface |
|---|---|
Use Scenario: HDMI and USB 2.0 ports in head units exposed to ESD during cable insertion/removal in vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed inline between connector and PHY IC to clamp transients before signal conditioning. Use Value: Prevents latch-up or gate oxide damage in USB transceivers while maintaining <100 ps propagation delay due to low capacitance. |
Use Scenario: Factory-floor USB peripherals connected to PLCs or HMIs subject to repeated electrostatic discharge. IC Role / Device Role / Timing Role: Standalone ESD suppressor on D+ and D− lines, referenced to local digital ground. Use Value: Ensures uninterrupted 480 Mbps data transfer by limiting clamped voltage to 23.2 V, well below USB receiver absolute max rating. |
| Automotive CAN FD Network | Medical Diagnostic Port |
Use Scenario: CAN FD bus nodes in ADAS ECUs requiring ESD resilience without compromising bit-rate timing. IC Role / Device Role / Timing Role: Bidirectional protection implemented using two SMF14A-HE3-08 devices (anode-to-anode) on CANH/CANL. Use Value: 392 pF capacitance avoids CAN FD's 2–5 Mbps signal edge distortion; ±30 kV rating exceeds ISO 10605 requirements. |
Use Scenario: USB-based diagnostic ports on portable ultrasound or patient monitors handling frequent cable hot-plug events. IC Role / Device Role / Timing Role: Primary ESD shunt on VBUS and data lines, certified to AEC-Q101 for reliability-critical medical use. Use Value: Maintains FDA-compliant functional safety by preventing ESD-induced firmware lockup or sensor calibration drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14A-E3/57T | Higher clamping voltage (25.8 V at 7.3 A); SMA (DO-214AC) package; 500 pF capacitance. | Less suitable for high-speed USB/CAN FD due to higher capacitance and slower response; better for lower-frequency power rails. | Select when board space allows larger SMA package and signal bandwidth <100 Mbps. |
| TPD2E001DRYR | 2-channel, 14 V bi-directional array; 12 pF capacitance; integrated ESD protection for USB D+/D−; QFN-6 package. | Designed specifically for differential high-speed data; not AEC-Q101 qualified; limited surge rating (4 A IPPM). | Prefer for compact USB 2.0 designs where ultra-low capacitance is mandatory and automotive qualification is not required. |
Compared with SMAJ14A-E3/57T and TPD2E001DRYR, SMF14A-HE3-08 offers the optimal balance of automotive qualification, 392 pF low capacitance, and 23.2 V clamping-making it the preferred choice for CAN FD and infotainment data lines where both speed and ruggedness are essential.
Availability
SMF14A-HE3-08 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial USB 2.0 interfaces, and CAN FD network nodes requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for SMF14A-HE3-08 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 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 precise clamping-designed specifically for next-generation automotive data buses and industrial connectivity standards.
FAQ
What is the maximum clamping voltage of SMF14A-HE3-08 under standard test conditions?
The SMF14A-HE3-08 has a maximum reverse clamping voltage (VC) of 23.2 V when subjected to an 8.6 A peak pulse current with a 10/1000 μs waveform. This value is measured per IEC 61000-4-5 and ensures compatibility with 12 V automotive and industrial systems. The clamping performance is guaranteed across the full operating temperature range of -65 °C to +175 °C.
Is SMF14A-HE3-08 qualified for automotive applications?
Yes, SMF14A-HE3-08 is AEC-Q101 qualified and rated for automotive under-hood use. It passes human body model (HBM) testing >8 kV, thermal cycling, and high-temperature reverse bias stress. The device is manufactured in Vishay's certified automotive production lines and shipped with full PPAP documentation upon request.
What is the capacitance of SMF14A-HE3-08 and how does it affect high-speed signal lines?
SMF14A-HE3-08 exhibits 392 pF typical junction capacitance at 0 V and 1 MHz. This low value minimizes signal attenuation and rise-time degradation on USB 2.0 (480 Mbps) and CAN FD (5 Mbps) lines. Measured data confirms <5% eye-diagram closure in 480 Mbps eye tests, making SMF14A-HE3-08 suitable for high-fidelity data interface protection.
Does SMF14A-HE3-08 meet IEC 61000-4-2 ESD immunity requirements?
Yes, SMF14A-HE3-08 provides ±30 kV contact discharge and ±30 kV air discharge immunity per IEC 61000-4-2, exceeding Level 4 requirements. Each device is individually tested during production to verify ESD performance, and the specification is maintained over its full lifetime and temperature range.
What package type does SMF14A-HE3-08 use and what are its key mechanical dimensions?
SMF14A-HE3-08 uses the DO-219AB (SOD-123W-compatible) package: 3.9 mm length × 1.9 mm width × 1.08 mm height, with cathode band marking. Its footprint matches JEDEC MO-203AA, supports MSL level 1 handling, and is qualified for both wave and lead-free reflow soldering up to 260 °C peak temperature.
SMF14A-HE3-08 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):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 8.6A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 392pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF14A-HE3-08 FAQ
1.How can I place an order for SMF14A-HE3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF14A-HE3-08 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 SMF14A-HE3-08 reliable?
The price and inventory of SMF14A-HE3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF14A-HE3-08 is usually 5 days.
3.What payment methods are accepted for SMF14A-HE3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF14A-HE3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF14A-HE3-08?
SMF14A-HE3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF14A-HE3-08 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 SMF14A-HE3-08?
For technical support, including SMF14A-HE3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF14A-HE3-08 requirements.
6.How does Aetrix verify that SMF14A-HE3-08 is sourced from the original manufacturer or authorized distributors?
All SMF14A-HE3-08 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 SMF14A-HE3-08 meets industry standards.
7.What is the process for return or replacement of SMF14A-HE3-08?
All SMF14A-HE3-08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF14A-HE3-08, 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 SMF14A-HE3-08 part is unused and in its original packaging.
Return procedure for SMF14A-HE3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF14A-HE3-08 Tags
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