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Vishay SMF7V0A-HE3_A18
- Part No.:
- SMF7V0A-HE3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF7V0A-HE3_A18.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,732
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Product details
Overview
SMF7V0A-HE3_A18 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in the SMF (DO-219AB) package, designed for low-capacitance transient voltage suppression on high-speed data lines. It features a 7.0 V stand-off voltage (VRWM), 12.0 V maximum clamping voltage at 16.7 A peak pulse current, 843 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 SMF7V0A-HE3_A18 datasheet, SMF7V0A-HE3_A18 pinout, SMF7V0A-HE3_A18 application, or SMF7V0A-HE3_A18 equivalent, this device is selected for robust ESD hardening of USB 2.0, HDMI, Ethernet PHY interfaces, and automotive infotainment data buses where low clamping voltage and sub-1 ns response time are critical to signal integrity.
Technical Context
This diode operates as a unidirectional avalanche clamp, leveraging silicon planar technology to deliver fast response (<1 ns) and low incremental surge resistance. Its 7.0 V VRWM ensures compatibility with 5 V and 3.3 V logic rails while maintaining margin against normal operating transients.
The device is optimized for IEC 61000-4-2 (±30 kV contact/air) and IEC 61000-4-5 (1000 W, 8/20 μs) compliance, with thermal resistance RthJA = 180 K/W on standard 3 mm × 3 mm Cu pads - enabling reliable operation up to TJ = 175 °C in compact automotive and industrial PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 7.0 V - blocks leakage below system nominal voltage, preserving signal integrity on 5 V/3.3 V interfaces |
| Max Clamping Voltage (VC) | 12.0 V at IPPM = 16.7 A - limits downstream IC stress during 10/1000 μs surges |
| Junction Capacitance (CD) | 843 pF at VR = 0 V, f = 1 MHz - suitable for <100 Mbps data lines; not recommended for USB 3.0 or PCIe |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - exceeds Level 4 immunity requirements for end-equipment certification |
| Peak Pulse Power | 200 W (10/1000 μs), 1000 W (8/20 μs) - handles repetitive ESD events and lightning-induced surges in automotive ECUs |
| AEC-Q101 Qualified | Yes - validated for automotive underhood and cabin applications per stress test conditions including HBM >8 kV |
| Package | DO-219AB (SOD-123W compatible footprint) - 3.9 mm × 1.9 mm × 1.08 mm low-profile outline for space-constrained routing |
Pinout & Package
SMF7V0A-HE3_A18 uses the DO-219AB (SMF) package: cathode-marked surface-mount case with two terminals. The package is compatible with SOD-123W, SOD-123F, and SOD-123FL footprints and supports wave and reflow soldering (peak temp ≤260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input side of protected line | Connected to signal trace upstream of IC input; conducts during negative transients |
| Cathode | Ground reference node | Connected to clean local ground plane; provides low-impedance path for surge current to earth |
Key Features
| Feature | Design Value |
|---|---|
| "Low Noise" fast-response technology | Sub-1 ns turn-on enables clamping before sensitive IC inputs experience overvoltage |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising ESD events, improving clamping predictability |
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, mechanical shock, and humidity testing |
| Wave and reflow solderable | Compatible with standard SMT assembly processes without special handling or pre-baking |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed automotive and industrial enclosures |
Applications
| Automotive Infotainment Data Lines | Industrial RS-485 Communication Ports |
|---|---|
Use Scenario: Protecting HDMI and USB 2.0 traces between head unit and display in vehicles exposed to ISO 10605 discharge. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed directly at connector entry point. Use Value: 12.0 V clamping prevents latch-up in HDMI receiver ICs while 843 pF capacitance avoids signal degradation at 480 Mbps. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs subject to cable-coupled surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary ESD clamp on differential bus lines, paired with common-mode chokes. Use Value: 200 W (10/1000 μs) rating absorbs multiple ESD strikes without degradation; MSL level 1 allows unlimited floor life. |
| Consumer USB 2.0 Host Interfaces | Medical Patient Monitoring Data Links |
Use Scenario: Hardening USB 2.0 D+/D− lines on portable diagnostic devices subjected to frequent human touch ESD. IC Role / Device Role / Timing Role: Low-capacitance TVS diode mounted adjacent to USB connector pins. Use Value: ±30 kV contact discharge rating meets IEC 61000-4-2 Level 4; 7.0 V VRWM avoids false triggering during 3.3 V signaling. |
Use Scenario: Protecting isolated CAN and UART lines in bedside monitors connected to external sensors via unshielded cables. IC Role / Device Role / Timing Role: Secondary-level ESD protection on low-speed serial links interfacing with Class II medical equipment. Use Value: AEC-Q101 qualification ensures long-term reliability; -65 °C to +175 °C operating range supports sterilization cycles and wide ambient deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.0A-E3/57T | Higher clamping voltage (12.5 V), larger SMA (DO-214AC) package (4.5 mm × 2.7 mm), 1000 W peak power | Better suited for higher-energy surges but less space-efficient; 1000 pF capacitance limits speed | Select when board area permits and higher surge margin is prioritized over signal integrity |
| TPD2E001DRYR | 2-channel, 15 pF ultra-low capacitance, 5.5 V VRWM, non-AEC-Q101, SOT-553 package | Optimized for high-speed USB 2.0/MIPI; lacks automotive qualification and 30 kV ESD rating | Choose for consumer-grade high-speed interfaces where size and capacitance dominate over automotive compliance |
Compared with SMAJ7.0A-E3/57T and TPD2E001DRYR, SMF7V0A-HE3_A18 uniquely balances AEC-Q101 qualification, 843 pF capacitance, and 12.0 V clamping in a 3.9 mm × 1.9 mm footprint - making it optimal for space-constrained automotive data lines requiring certified reliability.
Availability
SMF7V0A-HE3_A18 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial communication ports, and medical patient monitoring devices requiring stable component supply across extended production lifecycles.
Supply support for SMF7V0A-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 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 harsh environments, with design emphasis on AEC-Q101 compliance, low clamping voltage, and compact SMD packaging for next-generation automotive electronics.
FAQ
What is the clamping voltage of SMF7V0A-HE3_A18 at its rated peak pulse current?
The SMF7V0A-HE3_A18 has a maximum reverse clamping voltage (VC) of 12.0 V when subjected to its rated peak pulse current (IPPM) of 16.7 A using a 10/1000 μs waveform. This value is specified in the Electrical Characteristics table of Vishay's document 85881 Rev. 2.4 and defines the upper voltage limit imposed on protected circuitry during surge events.
Is SMF7V0A-HE3_A18 suitable for USB 3.0 or high-speed differential interfaces?
No, SMF7V0A-HE3_A18 is not recommended for USB 3.0, HDMI 2.0, or other >1 Gbps interfaces due to its 843 pF junction capacitance at 0 V, which introduces excessive signal attenuation and jitter. It is engineered for USB 2.0, RS-485, CAN, and legacy automotive data buses operating below 480 Mbps.
Does SMF7V0A-HE3_A18 meet automotive qualification standards?
Yes, SMF7V0A-HE3_A18 is AEC-Q101 qualified, verified per Vishay's documentation and marked with "HE3" indicating AEC-Q101 compliance. It passes human body model (HBM) testing >8 kV and operates across -65 °C to +175 °C, supporting under-hood and cabin applications in passenger and commercial vehicles.
What is the moisture sensitivity level (MSL) for SMF7V0A-HE3_A18?
SMF7V0A-HE3_A18 has a moisture sensitivity level (MSL) of 1 per J-STD-020, meaning it is not moisture-sensitive and may be stored indefinitely at ambient conditions without baking prior to reflow soldering. This simplifies manufacturing logistics and eliminates floor-life constraints.
How does the DO-219AB package of SMF7V0A-HE3_A18 compare to SOD-123W?
The DO-219AB package used by SMF7V0A-HE3_A18 is dimensionally compatible with SOD-123W, sharing identical length (3.9 mm), width (1.9 mm), and height (1.08 mm) per Vishay's package data. Both support the same 8 mm tape width and reflow profile, enabling drop-in replacement in existing SOD-123W layouts without PCB redesign.
SMF7V0A-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):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 16.7A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 843pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF7V0A-HE3_A18 FAQ
1.How can I place an order for SMF7V0A-HE3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF7V0A-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 SMF7V0A-HE3_A18 reliable?
The price and inventory of SMF7V0A-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 SMF7V0A-HE3_A18 is usually 5 days.
3.What payment methods are accepted for SMF7V0A-HE3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF7V0A-HE3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF7V0A-HE3_A18?
SMF7V0A-HE3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF7V0A-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 SMF7V0A-HE3_A18?
For technical support, including SMF7V0A-HE3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF7V0A-HE3_A18 requirements.
6.How does Aetrix verify that SMF7V0A-HE3_A18 is sourced from the original manufacturer or authorized distributors?
All SMF7V0A-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 SMF7V0A-HE3_A18 meets industry standards.
7.What is the process for return or replacement of SMF7V0A-HE3_A18?
All SMF7V0A-HE3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF7V0A-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 SMF7V0A-HE3_A18 part is unused and in its original packaging.
Return procedure for SMF7V0A-HE3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF7V0A-HE3_A18 Tags
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