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Vishay SMF7V0A-HM3_A18
- Part No.:
- SMF7V0A-HM3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF7V0A-HM3_A18.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,013
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Product details
Overview
SMF7V0A-HM3_A18 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in DO-219AB (SOD-123W) package, designed for I/O line protection with 7.0 V standoff voltage, 12.0 V max clamping voltage at 16.7 A peak pulse current, ±30 kV IEC 61000-4-2 ESD immunity, and 200 W peak pulse power (10/1000 μs). It safeguards USB, HDMI, and automotive sensor interfaces against transient overvoltage.
For engineers reviewing the SMF7V0A-HM3_A18 datasheet, SMF7V0A-HM3_A18 pinout, SMF7V0A-HM3_A18 application, or SMF7V0A-HM3_A18 equivalent, this page delivers verified electrical specs, package dimensions, real-world clamping behavior, AEC-Q101 qualification status, and direct alternatives for board-level ESD hardening.
Technical Context
This diode operates as a unidirectional TVS device with avalanche breakdown mechanism, optimized for low-capacitance (843 pF typical at 0 V, 1 MHz) and fast response (<1 ns rise time per IEC 61000-4-2). Its 7.0 V standoff voltage ensures compatibility with 5 V logic rails while maintaining margin above VCC.
Thermal resistance of 180 K/W (on 3 mm × 3 mm Cu pads) supports sustained surge handling, and its AEC-Q101 qualification confirms suitability for automotive electronics operating from −65 °C to +175 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRWM) | 7.0 V - Blocks normal 5 V system signals without leakage; allows safe margin below 7.78 V min breakdown. |
| Max Clamping Voltage (VC) | 12.0 V at 16.7 A - Limits transient voltage to safe level for downstream 12 V-tolerant receivers. |
| Peak Pulse Power | 200 W (10/1000 μs) - Handles common lightning-induced surges in industrial and automotive wiring harnesses. |
| ESD Immunity | ±30 kV contact/air (IEC 61000-4-2) - Meets highest level of system-level ESD robustness for exposed ports. |
| Capacitance | 843 pF at 0 V, 1 MHz - Low enough for USB 2.0 (480 Mbps) and CAN FD signal integrity preservation. |
| Operating Temp Range | −65 °C to +175 °C - Supports under-hood automotive and industrial control unit deployment. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including HBM >8 kV and high-temp life testing. |
Pinout & Package
SMF7V0A-HM3_A18 uses the DO-219AB (SOD-123W) surface-mount package: 3.9 mm × 1.9 mm × 1.08 mm, low-profile, wave/reflow solderable, MSL Level 1, UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input side of protected line | Connected to signal trace upstream of IC input; conducts surge current to ground when reverse-biased beyond VBR. |
| Cathode | Ground reference terminal | Connected to chassis or local ground plane; provides low-inductance return path for ESD current. |
Key Features
| Feature | Design Value |
|---|---|
| Low incremental surge resistance | Enables tight clamping (12.0 V @ 16.7 A), minimizing voltage overshoot during fast transients. |
| "Low Noise" fast-response technology | <1 ns response time ensures clamping activation before sensitive IC inputs experience damaging overvoltage. |
| SOD-123W footprint compatibility | Direct drop-in replacement for legacy SOD-123F/FL designs without PCB layout change. |
| AEC-Q101 qualified variant | Validated for automotive applications requiring extended temperature operation and long-term reliability. |
| RoHS-compliant, lead-free terminations | Tin-plated terminals meet JEDEC J-STD-020 reflow profile (peak 260 °C) and environmental compliance mandates. |
Applications
| USB 2.0 Port Protection | Automotive Sensor Interface |
|---|---|
|
Use Scenario: Protecting D+ and D− lines of USB 2.0 host/device connectors against ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between signal line and ground, clamping transients before they reach USB transceiver IC. Use Value: 843 pF capacitance avoids signal integrity degradation at 480 Mbps; ±30 kV ESD rating exceeds IEC 61000-4-2 system-level test requirements. |
Use Scenario: Safeguarding LIN bus or analog sensor outputs (e.g., pressure, temperature) in engine control modules exposed to under-hood ESD and load dump. IC Role / Device Role / Timing Role: Standoff-rated transient suppressor on signal path, activated only during overvoltage events to shunt energy to chassis ground. Use Value: −65 °C to +175 °C operating range matches under-hood thermal environment; AEC-Q101 qualification ensures automotive lifecycle reliability. |
| HDMI DDC Channel Protection | Industrial I/O Module |
|
Use Scenario: Shielding HDMI DDC (I²C) lines (SCL/SDA) from ESD during cable mating in consumer AV equipment and digital signage. IC Role / Device Role / Timing Role: Low-capacitance bidirectional protection element (configured unidirectionally here) preserving I²C timing margins up to 400 kHz. Use Value: 7.0 V VRWM aligns with 3.3 V I²C rail; 12.0 V clamping prevents latch-up in HDMI controller GPIOs. |
Use Scenario: Protecting 24 V digital input channels in PLC I/O modules from field-wiring induced surges and operator ESD. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on dry-contact or optocoupler input stage, limiting voltage seen by upstream conditioning circuitry. Use Value: 200 W peak pulse power handles repetitive 10/1000 μs surges per IEC 61000-4-5; 180 K/W RthJA enables thermal stability on standard FR4 PCBs. |
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-E3/5A | Higher clamping voltage (12.5 V @ 17.1 A); SMA package (larger footprint, 4.5 mm × 2.7 mm). | Less suitable for space-constrained USB/HDMI layouts; better for higher-energy industrial surges. | Choose SMAJ7.0A-E3/5A if board area permits and higher surge margin is prioritized over capacitance. |
| TPD2E001DRYR | 2-channel, 15 pF per channel, 5.5 V VRWM; integrated dual-diode array in USON-6 package. | Designed for high-speed data lines (USB 2.0, Ethernet); not AEC-Q101 qualified. | Choose TPD2E001DRYR for ultra-low-capacitance dual-line protection where automotive qualification is not required. |
Compared with SMAJ7.0A-E3/5A and TPD2E001DRYR, SMF7V0A-HM3_A18 uniquely balances 7.0 V standoff, 843 pF capacitance, AEC-Q101 qualification, and compact DO-219AB footprint-making it optimal for automotive and industrial I/O where size, reliability, and ESD margin are jointly critical.
Availability
SMF7V0A-HM3_A18 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive sensor signal conditioning, and industrial PLC digital input circuits requiring stable component supply across production lifecycles.
Supply support for SMF7V0A-HM3_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 board-level ESD protection in space-constrained, high-reliability applications-designed specifically for AEC-Q101 compliance, low-profile mounting, and robust transient suppression in harsh environments.
FAQ
What is the standoff voltage of SMF7V0A-HM3_A18 and how does it relate to system voltage?
The SMF7V0A-HM3_A18 has a maximum standoff voltage (VRWM) of 7.0 V, meaning it remains non-conductive under normal operating conditions up to that voltage. This provides sufficient margin above standard 5 V logic rails while ensuring reliable clamping during transients. The 7.78 V minimum breakdown voltage further guarantees no false triggering during nominal operation, making SMF7V0A-HM3_A18 ideal for protecting 5 V interfaces like USB and industrial I/O.
Is SMF7V0A-HM3_A18 qualified for automotive use?
Yes, SMF7V0A-HM3_A18 is AEC-Q101 qualified, having passed rigorous stress tests including human body model ESD (>8 kV), high-temperature operating life, and temperature cycling. Its −65 °C to +175 °C operating range and DO-219AB package construction meet automotive under-hood and module-level requirements, confirming SMF7V0A-HM3_A18 as a validated solution for automotive sensor, LIN, and infotainment interface protection.
What is the clamping voltage of SMF7V0A-HM3_A18 at its rated peak pulse current?
At its rated peak pulse current of 16.7 A (10/1000 μs waveform), SMF7V0A-HM3_A18 clamps to a maximum of 12.0 V. This value is measured under standardized surge conditions and defines the upper voltage limit imposed on protected circuitry during an ESD or surge event. The low clamping ratio (12.0 V / 7.0 V ≈ 1.71) reflects efficient avalanche conduction, making SMF7V0A-HM3_A18 effective for safeguarding 12 V-tolerant receivers without overstressing them.
How does the capacitance of SMF7V0A-HM3_A18 affect high-speed signal integrity?
SMF7V0A-HM3_A18 exhibits 843 pF typical capacitance at 0 V and 1 MHz, which is well-suited for USB 2.0 (480 Mbps), CAN FD, and analog sensor interfaces where bandwidth is moderate. While not intended for PCIe or HDMI 2.0+, this capacitance introduces negligible loading on 5 V logic lines and maintains signal rise/fall times within specification. For higher-speed applications, lower-capacitance alternatives exist-but SMF7V0A-HM3_A18 strikes the optimal balance between ESD robustness and signal fidelity in cost-sensitive industrial and automotive designs.
What packaging and assembly compatibility does SMF7V0A-HM3_A18 offer?
SMF7V0A-HM3_A18 uses the DO-219AB (SOD-123W) package: 3.9 mm × 1.9 mm × 1.08 mm, compatible with standard SOD-123F and SOD-123FL footprints. It supports both wave and reflow soldering per JEDEC J-STD-020 (MSL Level 1, peak 260 °C), and its cathode-bar marking aligns with industry-standard orientation in 8 mm tape-and-reel (10K per 13″ reel, code _A18). This ensures seamless integration into automated SMT lines without process changes, reinforcing SMF7V0A-HM3_A18 as a production-ready ESD solution.
SMF7V0A-HM3_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-HM3_A18 FAQ
1.How can I place an order for SMF7V0A-HM3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF7V0A-HM3_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-HM3_A18 reliable?
The price and inventory of SMF7V0A-HM3_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-HM3_A18 is usually 5 days.
3.What payment methods are accepted for SMF7V0A-HM3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF7V0A-HM3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF7V0A-HM3_A18?
SMF7V0A-HM3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF7V0A-HM3_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-HM3_A18?
For technical support, including SMF7V0A-HM3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF7V0A-HM3_A18 requirements.
6.How does Aetrix verify that SMF7V0A-HM3_A18 is sourced from the original manufacturer or authorized distributors?
All SMF7V0A-HM3_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-HM3_A18 meets industry standards.
7.What is the process for return or replacement of SMF7V0A-HM3_A18?
All SMF7V0A-HM3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF7V0A-HM3_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-HM3_A18 part is unused and in its original packaging.
Return procedure for SMF7V0A-HM3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF7V0A-HM3_A18 Tags
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