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Vishay SMF9V0A-HM3_A18
- Part No.:
- SMF9V0A-HM3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF9V0A-HM3_A18.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,625
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Product details
Overview
SMF9V0A-HM3_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 standoff 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 used in USB 2.0, HDMI, and industrial sensor interface protection.
For engineers reviewing the SMF9V0A-HM3_A18 datasheet, SMF9V0A-HM3_A18 pinout, SMF9V0A-HM3_A18 application, or SMF9V0A-HM3_A18 equivalent, key selection criteria include clamping voltage vs. protected IC's absolute maximum rating, capacitance (640 pF at 0 V), AEC-Q101 qualification status, SOD-123W-compatible footprint, and thermal resistance (180 K/W).
Technical Context
This device operates as a unidirectional avalanche diode with cathode-anode polarity, leveraging silicon planar technology to achieve fast response (<1 ns) and low incremental surge resistance. Its clamping behavior is defined by a 10/1000 μs waveform test condition and validated under ±30 kV contact/air discharge per IEC 61000-4-2.
The SMF9V0A-HM3_A18 is rated for continuous operation from –65 °C to +175 °C, supports wave and reflow soldering (peak 260 °C), and meets MSL Level 1 per J-STD-020. Its 640 pF junction capacitance at 0 V and 1 MHz makes it suitable for DC-biased or low-frequency signal paths-not high-speed data lines above 10 Mbps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRWM) | 9.0 V - Maximum continuous reverse voltage before significant leakage; sets minimum operating margin for protected line. |
| Clamping Voltage (VC) | 15.4 V max at IPPM = 13.5 A - Limits transient voltage seen by downstream IC; must be below IC's absolute max rating. |
| Junction Capacitance (CD) | 640 pF at VR = 0 V, f = 1 MHz - Impacts signal integrity; acceptable for USB 2.0 (480 Mbps) but not USB 3.x or PCIe Gen3. |
| ESD Immunity | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - Validated for 10 pulses; exceeds automotive and industrial ESD requirements. |
| Peak Pulse Power | 200 W (10/1000 μs) - Sustains short-duration surges without degradation; derates with ambient temperature and PCB copper area. |
| Thermal Resistance (RthJA) | 180 K/W on 3 mm × 3 mm Cu pads - Determines safe power dissipation limit; requires adequate copper pour for repeated surge events. |
| Operating Temperature | –65 °C to +175 °C - Enables use in under-hood automotive, industrial controls, and harsh-environment sensors. |
Pinout & Package
Package: DO-219AB (SMF), low-profile surface-mount case compatible with SOD-123W footprint. Dimensions: 3.9 mm × 1.9 mm × 1.08 mm (L × W × H), cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input side of protected line (e.g., signal trace) | Connected to the line requiring ESD protection; forward-biased during positive transients. |
| Cathode | Ground reference node | Connected to system ground or low-impedance return path; conducts surge current to GND during negative transients. |
Key Features
| Feature | Design Value |
|---|---|
| "Low Noise" fast-response technology | Sub-nanosecond response time ensures clamping initiates before protected IC sustains damage from ESD events. |
| AEC-Q101 qualified variant available | This part number (HM3_A18) includes AEC-Q101 qualification-required for automotive infotainment and body electronics. |
| 200 W peak pulse power (10/1000 μs) | Supports robust surge handling in industrial I/O modules exposed to lightning-induced surges or inductive switching. |
| Solderable per J-STD-020 MSL Level 1 | Zero moisture sensitivity enables standard reflow without baking; simplifies manufacturing for high-volume PCB assembly. |
| UL 94 V-0 molding compound | Flame-retardant encapsulation meets safety standards for enclosed industrial and medical equipment enclosures. |
Applications
| USB 2.0 Data Line Protection | HDMI DDC Channel Protection |
|---|---|
Use Scenario: Protecting USB 2.0 D+ and D− lines against ESD events during hot-plug insertion in embedded host controllers. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between signal line and chassis ground, clamping transients before they reach the USB PHY. Use Value: 640 pF capacitance avoids signal integrity loss at 480 Mbps; 15.4 V clamping stays safely below typical USB PHY's 20 V abs max rating. | Use Scenario: Safeguarding HDMI Display Data Channel (DDC) lines (SDA/SCL) from user-handling ESD in consumer AV receivers. IC Role / Device Role / Timing Role: Standoff-rated TVS suppressing ±30 kV discharges while preserving 100 kHz DDC clock timing margins. Use Value: 9.0 V VRWM matches 5 V DDC bus voltage; low leakage (<0.1 μA) prevents pull-up resistor loading and bus timeout errors. |
| Industrial Sensor Interface | Automotive Body Control Module |
Use Scenario: Protecting analog output lines (e.g., 4–20 mA transmitter outputs) from field-induced surges in factory automation systems. IC Role / Device Role / Timing Role: Transient suppressor mounted at connector entry point, shunting surge energy to local ground plane. Use Value: 175 °C max junction temperature supports operation near motors or drives; 200 W pulse rating handles repetitive 10/1000 μs surges. | Use Scenario: ESD protection for LIN bus or switch inputs in door module ECUs exposed to human touch in vehicles. IC Role / Device Role / Timing Role: AEC-Q101-qualified unidirectional TVS ensuring reliability over 15-year automotive service life. Use Value: HM3_A18 suffix confirms AEC-Q101 qualification; 180 K/W RthJA allows direct mounting on small PCB areas without thermal vias. |
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-E3/5A | Higher clamping voltage (16.0 V), larger SMA (DO-214AC) package, 1.5× higher RthJA (270 K/W) | Less suitable for space-constrained layouts; better for higher-power 8/20 μs surges (400 W) | Select when board space allows larger footprint and higher surge energy must be absorbed. |
| TPSMF9.0A | Same DO-219AB package, lower capacitance (350 pF), same VRWM/clamping, but no AEC-Q101 qualification | Preferred for high-speed USB 3.0 or MIPI interfaces where <400 pF is mandatory | Choose for non-automotive designs needing lower capacitance; verify qualification status for automotive programs. |
Compared with SMAJ9.0A-E3/5A and TPSMF9.0A, the SMF9V0A-HM3_A18 delivers optimal balance of compact size, AEC-Q101 compliance, and 640 pF capacitance-making it ideal for automotive and industrial signal-line protection where footprint and qualification are critical.
Availability
SMF9V0A-HM3_A18 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, industrial sensor I/O conditioning, and automotive body control modules requiring stable component supply and long-term lifecycle support.
Supply support for SMF9V0A-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 Intertechnology is a global manufacturer of discrete semiconductors and passive components, specializing in high-reliability devices for automotive, industrial, and computing markets.
The SMF series targets cost-sensitive, high-volume ESD protection applications requiring AEC-Q101 qualification, low-profile packaging, and robust IEC 61000-4-2 performance-especially in automotive infotainment and industrial I/O modules.
FAQ
What is the clamping voltage specification for SMF9V0A-HM3_A18?
The SMF9V0A-HM3_A18 has a maximum reverse clamping voltage (VC) of 15.4 V at 13.5 A peak pulse current (10/1000 μs waveform). This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during an ESD event. The SMF9V0A-HM3_A18 maintains this clamping performance across its full operating temperature range (–65 °C to +175 °C).
Is SMF9V0A-HM3_A18 qualified to AEC-Q101?
Yes, the SMF9V0A-HM3_A18 is AEC-Q101 qualified. The "HM3" prefix and "_A18" suffix in the part number denote Vishay's AEC-Q101-compliant variant, tested for human body model (HBM) >8 kV and validated for automotive under-hood and cabin environments. This qualification is documented in Vishay's official SMF family datasheet revision 2.4 (July 2023).
What is the junction capacitance of SMF9V0A-HM3_A18 and how does it affect signal integrity?
The SMF9V0A-HM3_A18 exhibits 640 pF typical junction capacitance at 0 V and 1 MHz. This value impacts high-frequency signal lines: it is acceptable for USB 2.0 (480 Mbps) and analog sensor outputs but unsuitable for USB 3.x (>5 Gbps) or HDMI 2.0. Signal rise/fall times degrade proportionally to capacitance; designers must verify eye diagram margins when using SMF9V0A-HM3_A18 in data paths.
Can SMF9V0A-HM3_A18 be used in bidirectional signal protection?
No, SMF9V0A-HM3_A18 is a unidirectional TVS diode intended for DC-biased or ground-referenced lines. Its electrical characteristics-including breakdown voltage symmetry and clamping behavior-are specified only for reverse-biased operation. For bidirectional protection (e.g., AC-coupled lines), a dedicated bidirectional part such as SMBJ9.0CA or a dual-diode array must be selected instead of SMF9V0A-HM3_A18.
What is the recommended PCB footprint for SMF9V0A-HM3_A18?
The SMF9V0A-HM3_A18 uses the DO-219AB (SMF) package and is compatible with SOD-123W land patterns. Vishay recommends a footprint with 2.9 mm pad length, 1.3 mm pad width, 1.4 mm pad spacing, and 1.3 mm solder mask opening per terminal. Thermal relief via placement under the cathode pad improves heat dissipation; the SMF9V0A-HM3_A18 datasheet provides exact dimensions in millimeters and inches.
SMF9V0A-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):
- 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-HM3_A18 FAQ
1.How can I place an order for SMF9V0A-HM3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF9V0A-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 SMF9V0A-HM3_A18 reliable?
The price and inventory of SMF9V0A-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 SMF9V0A-HM3_A18 is usually 5 days.
3.What payment methods are accepted for SMF9V0A-HM3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF9V0A-HM3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF9V0A-HM3_A18?
SMF9V0A-HM3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF9V0A-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 SMF9V0A-HM3_A18?
For technical support, including SMF9V0A-HM3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF9V0A-HM3_A18 requirements.
6.How does Aetrix verify that SMF9V0A-HM3_A18 is sourced from the original manufacturer or authorized distributors?
All SMF9V0A-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 SMF9V0A-HM3_A18 meets industry standards.
7.What is the process for return or replacement of SMF9V0A-HM3_A18?
All SMF9V0A-HM3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF9V0A-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 SMF9V0A-HM3_A18 part is unused and in its original packaging.
Return procedure for SMF9V0A-HM3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF9V0A-HM3_A18 Tags
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