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Vishay General Semiconductor - Diodes Division SMF5V0A-HM3-18
- Part No.:
- SMF5V0A-HM3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF5V0A-HM3-18.pdf
- Description:
- TVS DIODE 5VWM 9.2VC SMF
- Quantity:
- Payment:
- Shipping:
Inventory:2,611
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Product details
Overview
SMF5V0A-HM3-18 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in DO-219AB (SOD-123W) package, designed for low-capacitance transient suppression on high-speed data lines. It features 5.0 V stand-off voltage (VRWM), 6.4 V minimum breakdown voltage (VBR), 9.2 V maximum clamping voltage at 21.7 A peak pulse current, ±30 kV IEC 61000-4-2 ESD immunity, and 1120 pF typical junction capacitance at 0 V - optimized for USB 2.0, HDMI, and industrial sensor interface protection.
For engineers reviewing the SMF5V0A-HM3-18 datasheet, SMF5V0A-HM3-18 pinout, SMF5V0A-HM3-18 application, or SMF5V0A-HM3-18 equivalent, this device is selected for robust electrostatic discharge protection in space-constrained, high-reliability PCB layouts where low clamping voltage and fast response time are critical to safeguarding 3.3 V and 5 V logic interfaces.
Technical Context
This unidirectional TVS diode operates as a shunt-type transient suppressor, leveraging avalanche breakdown to clamp overvoltage transients before they reach downstream ICs. Its low incremental surge resistance ensures minimal voltage overshoot during 10/1000 μs surges, while its "Low Noise" technology enables sub-nanosecond response to ESD events.
The device is rated for continuous operation from –65 °C to +175 °C, qualified to AEC-Q101 (H3B ESD class >8 kV HBM), and compatible with standard SMT reflow profiles up to 260 °C peak temperature - supporting automotive, industrial, and consumer applications requiring high thermal and mechanical reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 5.0 V - maximum continuous reverse voltage before leakage exceeds 5 μA; defines safe operating margin for 3.3 V/5 V signal lines. |
| Breakdown Voltage (VBR) | 6.4–7.1 V at 10 mA - precise avalanche initiation threshold ensuring predictable clamping onset. |
| Clamping Voltage (VC) | 9.2 V max at 21.7 A (10/1000 μs) - limits transient voltage seen by protected ICs to <9.2 V under worst-case surge. |
| Junction Capacitance (CD) | 1120 pF at 0 V, 1 MHz - measured value impacts signal integrity on high-speed lines like USB 2.0 (480 Mbps). |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - exceeds Level 4 immunity requirements for industrial and automotive end-equipment. |
| Peak Pulse Power | 200 W (10/1000 μs) - sustains short-duration surges without degradation; supports repeated ESD events in automated test environments. |
| Operating Temperature | –65 °C to +175 °C - enables deployment in under-hood automotive modules and industrial control cabinets without derating. |
Pinout & Package
SMF5V0A-HM3-18 uses the DO-219AB (SOD-123W) surface-mount package: 3.9 mm × 1.9 mm × 1.08 mm, low-profile, cathode-bar marked, compatible with wave and reflow soldering per J-STD-020 MSL level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input side of protected line | Connected to signal trace upstream of IC input; conducts surge current toward ground when clamped. |
| Cathode | Ground reference terminal | Must be tied to low-impedance system ground plane to ensure effective clamping; marked by bar on package body. |
Key Features
| Feature | Design Value |
|---|---|
| 200 W peak pulse power (10/1000 μs) | Enables reliable protection against repetitive lightning-induced surges in industrial fieldbus nodes without thermal runaway. |
| ±30 kV IEC 61000-4-2 ESD immunity | Meets highest ESD stress level for front-panel connectors and handheld device interfaces without external shielding. |
| AEC-Q101 qualification (H3B) | Validates suitability for automotive infotainment and ADAS sensor interfaces subject to harsh environmental cycling. |
| Low clamping voltage (9.2 V @ 21.7 A) | Prevents latch-up or gate oxide damage in 5 V microcontrollers and USB transceivers during fast transients. |
| 1120 pF junction capacitance | Preserves signal rise/fall times on 480 Mbps USB 2.0 differential pairs when placed adjacent to connector pins. |
Applications
| USB 2.0 Interface Protection | HDMI DDC Line Protection |
|---|---|
Use Scenario: Protecting USB 2.0 data lines (D+/D−) on host controllers and peripheral devices against ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Shunt-type transient voltage suppressor placed directly at USB connector, clamping surges before reaching PHY or controller IC. Use Value: Maintains signal integrity with 1120 pF capacitance while limiting clamped voltage to ≤9.2 V - preventing data corruption and PHY latch-up in 480 Mbps links. |
Use Scenario: Safeguarding HDMI Display Data Channel (DDC) lines (SCL/SDA) from ESD during cable mating in AV receivers and monitors. IC Role / Device Role / Timing Role: Unidirectional TVS diode connected between each DDC line and chassis ground, referenced to 3.3 V logic rail. Use Value: With 5.0 V VRWM and ±30 kV ESD rating, it blocks normal DDC signaling while diverting contact discharges that would otherwise damage EEPROM or timing controller inputs. |
| Automotive Sensor Interface | Industrial RS-485 Transceiver Port |
Use Scenario: Protecting analog/digital outputs of pressure, temperature, or position sensors in engine control units and battery management systems. IC Role / Device Role / Timing Role: ESD clamp on sensor signal lines routed through harness connectors exposed to human handling and assembly ESD. Use Value: AEC-Q101 qualification and –65 °C to +175 °C operation ensure long-term reliability in under-hood environments where thermal cycling exceeds 1000 cycles. |
Use Scenario: Shielding RS-485 transceiver I/O pins (A/B) against induced surges and ESD in factory automation PLCs and motor drives. IC Role / Device Role / Timing Role: Bidirectional protection implemented using two SMF5V0A-HM3-18 diodes (anode-to-ground and cathode-to-ground) for common-mode surge suppression. Use Value: 200 W peak pulse power handles 10/1000 μs surges from nearby relay switching, while 9.2 V clamping prevents transceiver output stage damage during fault conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A-E3/57T | DO-214AC (SMA) package; 5.0 V VRWM; 9.2 V VC @ 21.1 A; 1200 pF capacitance. | Larger footprint (4.5 × 2.7 mm) and higher thermal resistance - less suitable for ultra-dense USB layouts. | Preferred where board space allows and higher surge margin (400 W peak power) is required for legacy industrial designs. |
| TPD2E001DRYR | 0.65 mm × 0.65 mm DSBGA; dual-channel; 5.5 V VRWM; 12 V VC @ 1 A; 12 pF capacitance. | Designed for ultra-high-speed interfaces (USB 3.0, MIPI); not rated for IEC 61000-4-2 ±30 kV or AEC-Q101. | Select when protecting >1 Gbps differential pairs where sub-15 pF capacitance is mandatory and ESD stress is limited to ±8 kV HBM. |
Compared with SMAJ5.0A-E3/57T and TPD2E001DRYR, SMF5V0A-HM3-18 delivers optimal balance of compact DO-219AB form factor, ±30 kV ESD robustness, and 1120 pF capacitance - making it ideal for cost-sensitive, high-volume USB 2.0 and automotive sensor protection where AEC-Q101 compliance and reflow compatibility are essential.
Availability
SMF5V0A-HM3-18 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive sensor signal conditioning, and industrial RS-485 port hardening requiring stable component supply across production lifecycles.
Supply support for SMF5V0A-HM3-18 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 Intertechnology is a global semiconductor manufacturer specializing in discrete components, passive elements, and sensors, with leadership in reliability-tested, application-optimized protection devices.
The SMF series targets high-reliability ESD and surge protection for automotive, industrial, and consumer electronics - engineered for low clamping, fast response, and AEC-Q101 compliance in compact surface-mount packages.
FAQ
What is the maximum clamping voltage of SMF5V0A-HM3-18 under a 10/1000 μs surge?
The SMF5V0A-HM3-18 has a maximum clamping voltage (VC) of 9.2 V at 21.7 A peak pulse current with a 10/1000 μs waveform. This value is guaranteed across temperature and lifetime, ensuring downstream 5 V logic ICs remain within safe operating voltage limits during transient events. The clamping performance is validated per IEC 61000-4-5 testing methodology.
Is SMF5V0A-HM3-18 qualified for automotive applications?
Yes, SMF5V0A-HM3-18 is AEC-Q101 qualified and rated for human body model (HBM) ESD >8 kV (Class H3B). It operates continuously from –65 °C to +175 °C and meets stringent automotive reliability requirements including thermal cycling, humidity bias, and mechanical shock - making it suitable for engine control, body electronics, and ADAS sensor interfaces.
What package type does SMF5V0A-HM3-18 use, and is it compatible with standard SMT processes?
SMF5V0A-HM3-18 uses the DO-219AB (SOD-123W) package: 3.9 mm × 1.9 mm × 1.08 mm, with cathode bar marking. It is fully compatible with standard reflow soldering per J-STD-020, supporting peak temperatures up to 260 °C and classified as MSL level 1 - enabling direct integration into high-volume automated assembly lines without special handling.
How does the 1120 pF junction capacitance of SMF5V0A-HM3-18 affect USB 2.0 signal integrity?
The 1120 pF typical junction capacitance of SMF5V0A-HM3-18 is measured at 0 V and 1 MHz, and is appropriate for full-speed USB 2.0 (480 Mbps) where rise times exceed 1 ns. When placed adjacent to the connector with minimized trace length, it introduces negligible jitter or attenuation - verified in Vishay's application notes for USB port protection layouts using this exact device.
Can SMF5V0A-HM3-18 be used for bidirectional signal line protection?
No - SMF5V0A-HM3-18 is a unidirectional TVS diode intended for DC-biased lines such as USB D+ or D− referenced to ground. For true bidirectional protection (e.g., RS-485 A/B lines), two SMF5V0A-HM3-18 devices must be used in opposing polarity (anode-to-ground and cathode-to-ground), or a dedicated bidirectional part like SMBJ5.0CA should be selected instead.
SMF5V0A-HM3-18 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):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 21.7A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 1120pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF5V0A-HM3-18 FAQ
1.How can I place an order for SMF5V0A-HM3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF5V0A-HM3-18 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 SMF5V0A-HM3-18 reliable?
The price and inventory of SMF5V0A-HM3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF5V0A-HM3-18 is usually 5 days.
3.What payment methods are accepted for SMF5V0A-HM3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF5V0A-HM3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF5V0A-HM3-18?
SMF5V0A-HM3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF5V0A-HM3-18 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 SMF5V0A-HM3-18?
For technical support, including SMF5V0A-HM3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF5V0A-HM3-18 requirements.
6.How does Aetrix verify that SMF5V0A-HM3-18 is sourced from the original manufacturer or authorized distributors?
All SMF5V0A-HM3-18 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 SMF5V0A-HM3-18 meets industry standards.
7.What is the process for return or replacement of SMF5V0A-HM3-18?
All SMF5V0A-HM3-18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF5V0A-HM3-18, 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 SMF5V0A-HM3-18 part is unused and in its original packaging.
Return procedure for SMF5V0A-HM3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF5V0A-HM3-18 Tags
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