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Vishay General Semiconductor - Diodes Division SMF9V0A-M3-18
- Part No.:
- SMF9V0A-M3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF9V0A-M3-18.pdf
- Description:
- TVS DIODE 9VWM 15.4VC SMF
- Quantity:
- Payment:
- Shipping:
Inventory:5,654
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Product details
Overview
SMF9V0A-M3-18 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 9.0 V standoff voltage, 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 used to safeguard USB 2.0, HDMI, and industrial sensor interfaces against electrostatic discharge.
For engineers reviewing the SMF9V0A-M3-18 datasheet, SMF9V0A-M3-18 pinout, SMF9V0A-M3-18 application, or SMF9V0A-M3-18 equivalent, key selection criteria include reverse standoff voltage (9.0 V), clamping performance under 13.5 A surge, low 640 pF capacitance at 0 V, AEC-Q101 qualification status, and SOD-123W-compatible DO-219AB packaging for space-constrained PCB layouts.
Technical Context
This device operates as a single-channel unidirectional TVS diode, leveraging silicon avalanche technology to clamp transient overvoltages before they damage downstream ICs. Its low incremental surge resistance ensures rapid response and minimal voltage overshoot during ESD events.
The SMF9V0A-M3-18 is optimized for bidirectional signal paths requiring polarity-aware protection-its cathode-marked anode-to-cathode configuration enables precise placement on I/O lines where ground-referenced clamping is required, such as USB D+ and D− lines or CAN bus receivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRWM) | 9.0 V - Maximum continuous operating voltage before clamping begins; sets minimum system operating margin for protected line. |
| Clamping Voltage (VC) | 15.4 V max at IPPM = 13.5 A - Limits voltage seen by downstream IC during 10/1000 μs surge; critical for 3.3 V or 5 V logic survival. |
| Peak Pulse Power | 200 W (10/1000 μs) - Sustains short-duration transients without degradation; validated per IEC 61000-4-5. |
| ESD Immunity | ±30 kV contact / ±30 kV air (IEC 61000-4-2) - Meets highest industrial and automotive ESD robustness requirements. |
| Capacitance | 640 pF at VR = 0 V, f = 1 MHz - Low enough for USB 2.0 (480 Mbps) signal integrity; avoids data eye closure. |
| Package | DO-219AB (SOD-123W compatible) - 3.9 mm × 1.9 mm × 1.08 mm footprint; supports automated reflow and wave soldering. |
| Operating Temp | –65 °C to +175 °C - Enables use in under-hood automotive, industrial control, and outdoor equipment environments. |
Pinout & Package
SMF9V0A-M3-18 uses the DO-219AB (SMF) package: a low-profile, surface-mount, single-diode case with cathode band marking. Dimensions are 3.9 mm (L) × 1.9 mm (W) × 1.08 mm (H); recommended footprint includes 1.3 mm pad length and 1.4 mm pad width per side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side | Connected to protected signal line; conducts surge current toward cathode during overvoltage event. |
| Cathode | Ground reference | Connected to system ground or low-impedance return path; defines clamping reference point and polarity. |
Key Features
| Feature | Design Value |
|---|---|
| "Low Noise" fast-response technology | Sub-nanosecond response time ensures clamping activation before ESD pulse edge damages sensitive inputs. |
| AEC-Q101 qualified option available | Qualified variant (e.g., SMF9V0A-HE3_A18) meets automotive-grade reliability for infotainment and ADAS interfaces. |
| Low incremental surge resistance | Minimizes voltage overshoot during high di/dt transients, improving clamping precision for 3.3 V microcontrollers. |
| Reflow and wave solder compatible | Rated for peak reflow temperature up to 260 °C (MSL Level 1), supporting standard high-volume PCB assembly. |
Applications
| USB 2.0 Interface Protection | HDMI Signal Line Protection |
|---|---|
Use Scenario: Protecting D+ and D− differential pair in portable USB peripherals against user-handling ESD. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between each data line and ground, referenced to system GND. Use Value: 640 pF capacitance avoids signal rise-time degradation; 15.4 V clamping prevents latch-up in USB transceivers rated for 3.6 V absolute max. | Use Scenario: Safeguarding TMDS clock and data channels in HDMI source devices (e.g., set-top boxes) exposed to field ESD. IC Role / Device Role / Timing Role: Ground-referenced transient suppressor on each TMDS line, positioned adjacent to connector. Use Value: ±30 kV ESD rating exceeds IEC 61000-4-2 Level 4; DO-219AB package allows tight layout near HDMI receptacle. |
| Automotive Sensor Interface | Industrial RS-485 Transceiver Port |
Use Scenario: Protecting LIN or analog sensor outputs (e.g., pressure, temperature) in engine control modules. IC Role / Device Role / Timing Role: Single-line TVS on sensor output trace, with cathode tied to chassis or signal ground. Use Value: –65 °C to +175 °C operating range supports under-hood deployment; AEC-Q101-qualified variants ensure long-term reliability. | Use Scenario: Shielding RS-485 driver/receiver pins in factory automation gateways subjected to cable-discharge events. IC Role / Device Role / Timing Role: Per-line unidirectional suppressor on A/B differential pair, referenced to common-mode ground. Use Value: 200 W peak pulse power handles induced surges from nearby motor switching; 9.0 V VRWM preserves receiver common-mode range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A | Higher clamping voltage (16.0 V), larger SMA (DO-214AC) package (4.5 mm × 2.7 mm), 600 W peak power (10/1000 μs). | Less suitable for high-density layouts; better for higher-energy surges where board space permits. | Select SMAJ9.0A when surge energy exceeds 200 W and footprint constraints are relaxed. |
| TPD2E001DRYR | Two-channel, bidirectional, 12 pF typical capacitance, 5.5 V VRWM, integrated ESD array in USON-6 package. | Designed for ultra-high-speed interfaces (USB 3.0, MIPI); not a direct replacement due to lower VRWM and dual-channel architecture. | Choose TPD2E001DRYR only for new designs targeting <15 pF capacitance and dual-line protection; not drop-in for SMF9V0A-M3-18. |
Compared with SMAJ9.0A and TPD2E001DRYR, SMF9V0A-M3-18 delivers optimal balance of low capacitance (640 pF), compact DO-219AB size, and 9.0 V standoff for legacy high-speed interfaces-making it preferred for USB 2.0, HDMI, and industrial serial links where board area and voltage margin are tightly constrained.
Availability
SMF9V0A-M3-18 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI signal line safeguarding, and automotive sensor interface applications requiring stable component supply across production lifecycles.
Supply support for SMF9V0A-M3-18 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 diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMF series belongs to Vishay's eSMP® family of surface-mount TVS diodes, engineered specifically for high-efficiency, low-profile ESD and surge protection in space-constrained, high-reliability electronic systems.
FAQ
What is the standoff voltage rating of the SMF9V0A-M3-18?
The SMF9V0A-M3-18 has a maximum standoff voltage (VRWM) of 9.0 V, meaning it remains non-conductive up to this DC or continuous reverse voltage level. This value is confirmed in the Electrical Characteristics table of Vishay's Document Number 85881, ensuring compatibility with 5 V and 3.3 V logic systems where transient clamping must not interfere with normal operation. The SMF9V0A-M3-18 maintains leakage below 0.1 μA at this voltage.
Does the SMF9V0A-M3-18 meet automotive qualification standards?
The base SMF9V0A-M3-18 is not AEC-Q101 qualified; however, Vishay offers the SMF9V0A-HE3_A18 variant which is fully AEC-Q101 qualified for automotive applications. That version shares identical electrical specs-including 9.0 V VRWM, 15.4 V VC, and 640 pF capacitance-but adds stress testing for temperature cycling, humidity, and mechanical shock. Always verify the full part number suffix when selecting for automotive use.
What is the clamping voltage of the SMF9V0A-M3-18 under surge conditions?
The SMF9V0A-M3-18 exhibits a maximum clamping voltage (VC) of 15.4 V when subjected to its rated peak pulse current of 13.5 A using a 10/1000 μs waveform. This value is measured per IEC 61000-4-5 test conditions and ensures downstream 3.3 V or 5 V ICs remain within safe operating limits during transient events. The SMF9V0A-M3-18 achieves this with low incremental surge resistance for minimal overshoot.
Can the SMF9V0A-M3-18 be used in USB 2.0 data line protection?
Yes-the SMF9V0A-M3-18 is widely deployed for USB 2.0 D+ and D− line protection due to its 640 pF capacitance at 0 V (1 MHz), which preserves signal integrity at 480 Mbps without significant eye diagram degradation. Its 9.0 V VRWM provides adequate margin above USB 2.0's 3.3 V nominal signaling, and its ±30 kV ESD rating exceeds IEC 61000-4-2 Level 4. The SMF9V0A-M3-18 fits tight connector-proximal layouts thanks to its DO-219AB footprint.
What package type does the SMF9V0A-M3-18 use, and is it compatible with standard pick-and-place equipment?
The SMF9V0A-M3-18 uses the DO-219AB package (also known as SMF), measuring 3.9 mm × 1.9 mm × 1.08 mm with a cathode band marking. It is fully compatible with standard SMT pick-and-place systems and supports both reflow (up to 260 °C peak) and wave soldering per J-STD-020 MSL Level 1. The package is dimensionally aligned with SOD-123W footprints, enabling drop-in use in existing layouts designed for that outline.
SMF9V0A-M3-18 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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- 640pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF9V0A-M3-18 FAQ
1.How can I place an order for SMF9V0A-M3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF9V0A-M3-18 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-M3-18 reliable?
The price and inventory of SMF9V0A-M3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF9V0A-M3-18 is usually 5 days.
3.What payment methods are accepted for SMF9V0A-M3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF9V0A-M3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF9V0A-M3-18?
SMF9V0A-M3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF9V0A-M3-18 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-M3-18?
For technical support, including SMF9V0A-M3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF9V0A-M3-18 requirements.
6.How does Aetrix verify that SMF9V0A-M3-18 is sourced from the original manufacturer or authorized distributors?
All SMF9V0A-M3-18 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-M3-18 meets industry standards.
7.What is the process for return or replacement of SMF9V0A-M3-18?
All SMF9V0A-M3-18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF9V0A-M3-18, 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-M3-18 part is unused and in its original packaging.
Return procedure for SMF9V0A-M3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF9V0A-M3-18 Tags
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