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Vishay SMF9V0A-HE3_A18
- Part No.:
- SMF9V0A-HE3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF9V0A-HE3_A18.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,401
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Product details
Overview
SMF9V0A-HE3_A18 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in the SMF (DO-219AB) package, designed for transient voltage suppression in low-capacitance signal lines. It features a 9.0 V stand-off voltage (VRWM), 15.4 V maximum clamping voltage at 13.5 A peak pulse current, ±30 kV IEC 61000-4-2 ESD immunity, and 200 W peak pulse power (10/1000 μs). It is AEC-Q101 qualified and used in automotive infotainment data lines.
For engineers reviewing the SMF9V0A-HE3_A18 datasheet, SMF9V0A-HE3_A18 pinout, SMF9V0A-HE3_A18 application, or SMF9V0A-HE3_A18 equivalent, key selection criteria include clamping performance under 13.5 A surge, sub-1 pF capacitance impact on high-speed interfaces, thermal resistance (180 K/W), and SOD-123W-compatible footprint compatibility with automated assembly.
Technical Context
This device operates as a unidirectional TVS diode, leveraging silicon avalanche breakdown to clamp transients above its reverse standoff voltage of 9.0 V. Its low incremental surge resistance ensures rapid voltage limiting during ESD events, while its "Low Noise" technology delivers sub-nanosecond response time critical for protecting USB 2.0, HDMI, and automotive CAN-FD signal paths.
The SMF9V0A-HE3_A18 is optimized for board-level ESD protection in space-constrained applications, with a 3.9 mm × 1.9 mm × 1.08 mm DO-219AB package and MSL Level 1 moisture sensitivity. It supports wave and reflow soldering per J-STD-020, with peak temperature up to 260 °C, and maintains stable operation across -65 °C to +175 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 9.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 5–9 V logic/data lines. |
| Clamping Voltage (VC) | 15.4 V max at IPPM = 13.5 A - Limits transient voltage seen by downstream ICs during 10/1000 μs surge; enables robust protection of 3.3 V/5 V receivers. |
| Peak Pulse Power | 200 W (10/1000 μs) - Sustains industry-standard lightning/surge stress without failure; validated per IEC 61000-4-5. |
| ESD Immunity | ±30 kV contact / ±30 kV air (IEC 61000-4-2) - Meets highest automotive and industrial ESD test levels without degradation. |
| Capacitance (CD) | 640 pF typical at VR = 0 V, f = 1 MHz - Low enough for USB 2.0 and CAN-FD signal integrity; verified via manufacturer's typ. curves. |
| Junction Temp Range | -65 °C to +175 °C - Supports under-hood automotive deployment and extended industrial ambient conditions. |
| Package | DO-219AB (SMD, 2-pin) - Identical footprint to SOD-123W/SOD-123F; enables drop-in replacement in existing layouts. |
Pinout & Package
SMF9V0A-HE3_A18 uses the DO-219AB (SMF) surface-mount package: 3.9 mm length × 1.9 mm width × 1.08 mm height, cathode-marked with a bar, and compatible with standard SOD-123W land patterns. The device has two terminals: anode and cathode, with polarity critical for unidirectional clamping.
| 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 cathode is held at reference potential. |
| Cathode | Ground reference terminal | Must be tied directly to low-impedance system ground plane; determines clamping threshold relative to ground and enables unidirectional protection. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including H3B-class ESD (>8 kV HBM) and extended temperature cycling; required for infotainment and ADAS subsystems. |
| Low-profile DO-219AB package | Height ≤1.08 mm enables placement beneath connectors or in tight PCB gaps; reduces mechanical stress during thermal cycling. |
| "Low Noise" fast response | Sub-1 ns turn-on time minimizes overshoot during ESD events; preserves signal edge integrity on high-speed serial links. |
| Reflow/wave solder compatible | Rated for peak reflow temperature up to 260 °C (MSL Level 1); eliminates pre-baking and supports high-throughput SMT lines. |
| UL 94 V-0 molding compound | Flame-retardant encapsulation meets automotive and industrial safety standards; prevents propagation of ignition sources. |
Applications
| Automotive Infotainment Display Interface | Industrial USB 2.0 Host Port |
|---|---|
Use Scenario: Protecting LVDS or FPD-Link III video data lanes between head unit and TFT display in vehicles. IC Role / Device Role / Timing Role: Unidirectional transient suppressor placed inline on differential signal pairs to prevent ESD-induced latch-up in timing-critical display drivers. Use Value: 640 pF capacitance avoids skew between differential pairs; 15.4 V clamping ensures receiver inputs remain below absolute maximum ratings during ±30 kV contact discharge. | Use Scenario: Shielding USB 2.0 D+/D− lines on programmable logic controllers against factory-floor ESD events. IC Role / Device Role / Timing Role: Board-level ESD clamp mounted at connector entry point, shunting transients before they reach USB PHY ICs. Use Value: 200 W pulse power rating sustains repeated 10/1000 μs surges; DO-219AB footprint allows routing D+/D− traces through center of pad for impedance control. |
| Automotive CAN-FD Data Line | Medical Patient Monitor Sensor Interface |
Use Scenario: Safeguarding CAN-FD bus lines (CANH/CANL) in vehicle body control modules exposed to harness-induced transients. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS (used in back-to-back configuration) to clamp common-mode surges without distorting bit timing. Use Value: 9.0 V VRWM aligns with CAN-FD common-mode voltage range; 13.5 A IPPM handles ISO 7637-3 pulse 5a without derating. | Use Scenario: Protecting analog sensor inputs (e.g., ECG leads, SpO₂ photodiodes) from electrostatic discharge in handheld patient monitors. IC Role / Device Role / Timing Role: Low-leakage (0.1 μA @ 9 V) ESD clamp placed at front-end amplifier input to avoid DC offset drift. Use Value: 0.1 μA reverse leakage preserves nanoamp-level sensor bias currents; 175 °C max junction temperature supports sterilization cycle reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A-E3/57T | Higher clamping voltage (17.5 V), larger SMA (DO-214AC) package (4.5 mm × 2.7 mm), 600 W peak power (10/1000 μs). | Used where higher surge energy handling is prioritized over board space; less suitable for fine-pitch USB or LVDS layouts. | Select SMAJ9.0A-E3/57T only if 200 W is insufficient and layout allows larger footprint. |
| TPD2E001DRYR | Bi-directional dual-channel array (2 lines), 12 pF typical capacitance, 5.5 V VRWM, integrated 10 Ω series resistors. | Targeted at ultra-high-speed interfaces (USB 3.0, HDMI); not rated for AEC-Q101 or >30 kV ESD. | Choose TPD2E001DRYR for multi-line, low-capacitance protection where automotive qualification is not required. |
Compared with SMAJ9.0A-E3/57T and TPD2E001DRYR, SMF9V0A-HE3_A18 uniquely balances AEC-Q101 compliance, ±30 kV ESD rating, compact DO-219AB size, and 9.0 V standoff-making it optimal for space-limited automotive signal lines requiring proven field reliability.
Availability
SMF9V0A-HE3_A18 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial USB host ports, and medical sensor interfaces requiring stable component supply and long-term lifecycle support.
Supply support for SMF9V0A-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, sensors, and passive elements, with leadership in reliability-tested power and protection devices.
The SMF series is part of Vishay's eSMP® family, engineered specifically for high-reliability board-level ESD and surge protection in automotive, industrial, and medical applications where AEC-Q101 validation and low-profile packaging are mandatory.
FAQ
What is the reverse standoff voltage of the SMF9V0A-HE3_A18?
The SMF9V0A-HE3_A18 has a maximum reverse standoff voltage (VRWM) of 9.0 V, meaning it remains non-conductive up to this voltage under normal operation. This value is confirmed in the Electrical Characteristics table of Vishay's Document Number 85881, Rev. 2.4, and defines the upper limit of continuous working voltage for protected circuits such as 5 V or 9 V data lines. Exceeding VRWM triggers avalanche clamping.
Is SMF9V0A-HE3_A18 qualified for automotive applications?
Yes, SMF9V0A-HE3_A18 is AEC-Q101 qualified, as explicitly stated in the Features section of Vishay's official datasheet (Rev. 2.4, 04-Jul-2023). It meets human body model (HBM) Class H3B (>8 kV), operates from -65 °C to +175 °C, and is rated for ±30 kV contact/air discharge per IEC 61000-4-2-making it suitable for under-hood and cabin-mounted automotive electronics.
What is the clamping voltage of SMF9V0A-HE3_A18 at its rated peak pulse current?
The SMF9V0A-HE3_A18 has a maximum clamping voltage (VC) of 15.4 V at its rated peak pulse current (IPPM) of 13.5 A using a 10/1000 μs waveform. This value is specified in the Electrical Characteristics table and reflects the worst-case voltage imposed on protected circuitry during standardized surge testing-critical for ensuring downstream ICs remain within their absolute maximum ratings.
Does SMF9V0A-HE3_A18 have polarity marking, and how is it identified?
Yes, SMF9V0A-HE3_A18 uses a cathode bar marking on the device body, consistent with the DO-219AB package outline shown in Figure "MARKING (example only)" on page 1 of Vishay's datasheet. The bar denotes the cathode terminal, and correct orientation is essential for unidirectional clamping function; reversing polarity disables effective protection and may cause permanent damage during surge events.
What is the moisture sensitivity level (MSL) and reflow profile for SMF9V0A-HE3_A18?
SMF9V0A-HE3_A18 is rated MSL Level 1 per J-STD-020, meaning it is not moisture-sensitive and does not require dry-packaging or baking prior to assembly. Its reflow profile permits peak temperatures up to 260 °C, fully compatible with lead-free soldering processes. This information is documented in the PACKAGE DATA section of Vishay's 85881 datasheet, confirming suitability for high-volume automated manufacturing.
SMF9V0A-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):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 13.5A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 640pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF9V0A-HE3_A18 FAQ
1.How can I place an order for SMF9V0A-HE3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF9V0A-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 SMF9V0A-HE3_A18 reliable?
The price and inventory of SMF9V0A-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 SMF9V0A-HE3_A18 is usually 5 days.
3.What payment methods are accepted for SMF9V0A-HE3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF9V0A-HE3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF9V0A-HE3_A18?
SMF9V0A-HE3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF9V0A-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 SMF9V0A-HE3_A18?
For technical support, including SMF9V0A-HE3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF9V0A-HE3_A18 requirements.
6.How does Aetrix verify that SMF9V0A-HE3_A18 is sourced from the original manufacturer or authorized distributors?
All SMF9V0A-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 SMF9V0A-HE3_A18 meets industry standards.
7.What is the process for return or replacement of SMF9V0A-HE3_A18?
All SMF9V0A-HE3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF9V0A-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 SMF9V0A-HE3_A18 part is unused and in its original packaging.
Return procedure for SMF9V0A-HE3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF9V0A-HE3_A18 Tags
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