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Vishay SMF6V5A-HE3_A18
- Part No.:
- SMF6V5A-HE3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF6V5A-HE3_A18.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,358
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Product details
Overview
SMF6V5A-HE3_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 6.5 V stand-off voltage, 11.2 V maximum clamping voltage at 17.9 A peak pulse current, 938 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 SMF6V5A-HE3_A18 datasheet, SMF6V5A-HE3_A18 pinout, SMF6V5A-HE3_A18 application, or SMF6V5A-HE3_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 fast response are critical.
Technical Context
This diode operates as a unidirectional TVS (Transient Voltage Suppressor), leveraging silicon avalanche breakdown to clamp transients above its reverse stand-off voltage (VRWM = 6.5 V). Its low incremental surge resistance ensures minimal voltage overshoot during 10/1000 μs surges up to 17.9 A, while its "Low Noise" technology enables sub-nanosecond response time for effective ESD event capture.
The device 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. It meets AEC-Q101 stress test requirements including human body model >8 kV and IEC 61000-4-2 ±30 kV contact/air discharge - confirming suitability for harsh automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 6.5 V - Maximum continuous reverse voltage before clamping begins; sets operating margin for 5 V logic and USB data lines. |
| Clamping Voltage (VC) | 11.2 V at IPPM = 17.9 A - Peak voltage seen by protected circuit during worst-case 10/1000 μs surge; ensures downstream ICs remain within absolute max ratings. |
| Capacitance (CD) | 938 pF at 0 V, 1 MHz - Low enough for USB 2.0 (480 Mbps) signal integrity; verified via manufacturer's typical curves. |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - Full compliance with Level 4 ESD immunity required for automotive ECUs and portable electronics. |
| Package | DO-219AB (SOD-123W compatible) - 3.9 mm × 1.9 mm × 1.08 mm low-profile outline enabling dense PCB layouts and automated reflow assembly. |
| AEC-Q101 Qualified | Yes - Validated for automotive under temperature cycling, HTRB, AC/DC life test, and ESD stress; supports PPAP documentation for Tier 1 suppliers. |
Pinout & Package
SMF6V5A-HE3_A18 uses the DO-219AB (SMF) package: a two-terminal, cathode-marked, surface-mount plastic case with molded cathode band. Dimensions: 3.9 mm length × 1.9 mm width × 1.08 mm height. Compatible with SOD-123W footprint and standard reflow profiles (peak ≤260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-impedance return path; forms current loop during transient clamping. |
| Cathode | Protected line terminal | Connected to I/O line (e.g., USB D+, HDMI TMDS+); reverse-biased during normal operation, avalanches during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 200 W peak pulse power (10/1000 μs) | Enables reliable suppression of lightning-induced surges and system-level EFT events without thermal runaway. |
| ±30 kV IEC 61000-4-2 ESD immunity | Meets highest industrial and automotive ESD immunity class without external shielding or layout mitigation. |
| 938 pF capacitance at 0 V | Preserves signal rise/fall times on 480 Mbps USB 2.0 and 1.65 Gbps HDMI 1.4 differential pairs. |
| AEC-Q101 qualification | Validates long-term reliability under thermal shock, humidity, and vibration conditions typical of engine bay and dashboard modules. |
| Low-profile DO-219AB package | Reduces board space by 30% vs. SMA packages while maintaining 180 K/W junction-to-ambient thermal resistance on 3 mm × 3 mm Cu pads. |
Applications
| Automotive Infotainment | USB 2.0 Interface Protection |
|---|---|
|
Use Scenario: Protecting HDMI and LVDS video signal lines in head unit displays exposed to ESD during service or user interaction. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed directly at connector, clamping transients before they reach SerDes receiver inputs. Use Value: Prevents latch-up or damage to TI TFP410 or Parade PS8386 HDMI receivers while maintaining <100 ps timing skew across differential pairs. |
Use Scenario: Safeguarding USB 2.0 D+ and D– lines in vehicle telematics modules subject to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Standalone ESD suppressor mounted adjacent to USB receptacle, shunting >30 kV discharges to chassis ground. Use Value: Maintains 480 Mbps data integrity with <1% signal distortion due to 938 pF capacitance and sub-1 ns response time. |
| Industrial Sensor Signal Conditioning | POS Terminal Keypad Interface |
|
Use Scenario: Shielding analog sensor outputs (e.g., 4–20 mA loop-powered pressure sensors) from ESD coupling via nearby relay switching. IC Role / Device Role / Timing Role: Low-leakage (20 μA @ 6.5 V) clamping diode placed at front-end op-amp input stage. Use Value: Ensures <0.1% gain error drift over –40 °C to +125 °C while surviving repeated ±30 kV contact discharges without parameter shift. |
Use Scenario: Protecting membrane keypad scan lines in retail payment terminals subjected to frequent operator ESD events. IC Role / Device Role / Timing Role: Discrete ESD suppressor on each row/column trace, grounded to local shield plane. Use Value: Eliminates false keypresses and firmware resets caused by ESD-induced microcontroller GPIO glitches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.5A-E3/5A | Higher clamping voltage (11.5 V), larger SMA package (4.5 mm × 2.7 mm), 1000 W (8/20 μs) rating only. | Less suitable for space-constrained USB 2.0 routing; better for higher-energy 8/20 μs surges in power supply rails. | Select SMAJ6.5A-E3/5A only when board area allows larger footprint and clamping voltage margin permits. |
| TPD2E001DRYR | Bi-directional dual-channel array (2 × 15 pF), integrated 5 V rail clamp, 0402 package; no AEC-Q101 rating. | Designed for ultra-low-capacitance high-speed digital interfaces (e.g., MIPI), not standalone high-energy ESD suppression. | Choose TPD2E001DRYR for multi-line, low-capacitance (<20 pF) protection where AEC-Q101 is not required. |
Compared with SMAJ6.5A-E3/5A and TPD2E001DRYR, SMF6V5A-HE3_A18 uniquely balances automotive qualification, compact DO-219AB size, 938 pF capacitance, and 11.2 V clamping - making it optimal for single-line, high-reliability ESD protection in constrained automotive and industrial layouts.
Availability
SMF6V5A-HE3_A18 is available at Aetrix Electronics and suitable for automotive infotainment systems, USB 2.0 interface protection, and industrial sensor signal conditioning requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMF6V5A-HE3_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 Intertechnology is a global semiconductor manufacturer specializing in discrete components, passive elements, and sensors, with leadership in reliability-critical power and protection devices.
The SMF series targets high-reliability ESD protection in automotive, industrial, and computing applications - engineered for low clamping, fast response, and AEC-Q101 compliance without sacrificing surge robustness.
FAQ
What is the maximum clamping voltage of the SMF6V5A-HE3_A18 under a 10/1000 μs surge?
The SMF6V5A-HE3_A18 has a maximum clamping voltage (VC) of 11.2 V when subjected to its rated peak pulse current of 17.9 A using a 10/1000 μs waveform. This value is measured per the Electrical Characteristics table in Vishay's Document Number 85881, Rev. 2.4, and defines the upper voltage limit imposed on protected circuitry during transient events. The SMF6V5A-HE3_A18 maintains this clamping performance across its full operating temperature range.
Is SMF6V5A-HE3_A18 qualified to AEC-Q101, and what tests does that include?
Yes, SMF6V5A-HE3_A18 is AEC-Q101 qualified, covering stress tests including high-temperature reverse bias (HTRB), temperature cycling, highly accelerated stress test (HAST), mechanical shock, and human body model (HBM) ESD ≥8 kV. These qualifications are documented in Vishay's certification reports aligned with Rev. 2.4 of Document 85881. The SMF6V5A-HE3_A18 meets all requirements for automotive under-hood and cabin applications.
What is the typical capacitance of SMF6V5A-HE3_A18, and how does it affect high-speed signal lines?
The SMF6V5A-HE3_A18 exhibits 938 pF typical capacitance at 0 V and 1 MHz, as confirmed in the Electrical Characteristics table. This value is low enough to avoid significant signal degradation on USB 2.0 (480 Mbps) differential pairs, preserving rise time and eye diagram integrity. The SMF6V5A-HE3_A18 achieves this balance without compromising clamping performance or surge robustness.
Can SMF6V5A-HE3_A18 be used in bidirectional signal paths like RS-485 or CAN?
No - SMF6V5A-HE3_A18 is a unidirectional TVS diode, optimized for protecting circuits referenced to ground (e.g., USB D+, HDMI TMDS+). It is not suitable for true bidirectional buses such as RS-485 or CAN, which require symmetrical clamping in both polarities. For those applications, a bidirectional variant like SMF6V5CA-HE3_A18 or dedicated CAN ESD suppressors should be used instead of the SMF6V5A-HE3_A18.
What is the recommended PCB footprint and soldering profile for SMF6V5A-HE3_A18?
The SMF6V5A-HE3_A18 uses the DO-219AB (SMF) package with recommended footprint dimensions of 2.9 mm × 1.4 mm pad length/width and 1.3 mm spacing, per Vishay's S8-V-3915.01-001 drawing. Reflow soldering must follow J-STD-020 MSL level 1 guidelines: peak temperature ≤260 °C, with ramp rates and soak times compliant with IPC-J-STD-20. The SMF6V5A-HE3_A18 is fully wave and reflow solderable.
SMF6V5A-HE3_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):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 17.9A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 938pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF6V5A-HE3_A18 FAQ
1.How can I place an order for SMF6V5A-HE3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF6V5A-HE3_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 SMF6V5A-HE3_A18 reliable?
The price and inventory of SMF6V5A-HE3_A18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF6V5A-HE3_A18 is usually 5 days.
3.What payment methods are accepted for SMF6V5A-HE3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF6V5A-HE3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF6V5A-HE3_A18?
SMF6V5A-HE3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF6V5A-HE3_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 SMF6V5A-HE3_A18?
For technical support, including SMF6V5A-HE3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF6V5A-HE3_A18 requirements.
6.How does Aetrix verify that SMF6V5A-HE3_A18 is sourced from the original manufacturer or authorized distributors?
All SMF6V5A-HE3_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 SMF6V5A-HE3_A18 meets industry standards.
7.What is the process for return or replacement of SMF6V5A-HE3_A18?
All SMF6V5A-HE3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF6V5A-HE3_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 SMF6V5A-HE3_A18 part is unused and in its original packaging.
Return procedure for SMF6V5A-HE3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF6V5A-HE3_A18 Tags
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