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Vishay General Semiconductor - Diodes Division SMF5V0A-M3-18
- Part No.:
- SMF5V0A-M3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF5V0A-M3-18.pdf
- Description:
- TVS DIODE 5VWM 9.2VC SMF
- Quantity:
- Payment:
- Shipping:
Inventory:48,221
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Product details
Overview
SMF5V0A-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 on high-speed data lines. It features a 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 interfaces.
For engineers reviewing the SMF5V0A-M3-18 datasheet, SMF5V0A-M3-18 pinout, SMF5V0A-M3-18 application, or SMF5V0A-M3-18 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 against transients.
Technical Context
The SMF5V0A-M3-18 operates as a single-channel unidirectional TVS diode with avalanche breakdown behavior, triggered when reverse voltage exceeds its 6.4–7.1 V breakdown range. Its low incremental surge resistance enables rapid energy diversion during ESD events, while its "Low Noise" technology ensures sub-nanosecond response time to suppress transients before IC damage occurs.
Designed for mounting on standard epoxy-glass PCBs with 3 mm × 3 mm copper pads, it delivers 200 W peak pulse power (10/1000 μs waveform) and maintains thermal resistance of 180 K/W. It supports wave and reflow soldering per J-STD-020 MSL level 1, with peak temperature tolerance up to 260 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 5.0 V - maximum continuous reverse operating voltage before conduction begins; compatible with 3.3 V and 5 V I/O rails. |
| Breakdown Voltage (VBR) | 6.4–7.1 V at 10 mA - precise avalanche threshold ensuring reliable triggering without premature leakage. |
| Clamping Voltage (VC) | 9.2 V max at 21.7 A IPPM - limits transient voltage seen by protected IC to safe levels during 10/1000 μs surges. |
| Junction Capacitance (CD) | 1120 pF at 0 V, 1 MHz - low enough for USB 2.0 (480 Mbps) signal integrity, but not suitable for USB 3.x or PCIe. |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - exceeds Level 4 immunity requirements for industrial and automotive end-equipment. |
| Package | DO-219AB (SOD-123W-compatible) - 3.9 × 1.9 × 1.08 mm footprint enabling dense routing in compact consumer and IoT PCBs. |
| Operating Temp. | −65 °C to +175 °C - qualified for under-hood automotive, industrial control, and extended-temperature embedded systems. |
Pinout & Package
SMF5V0A-M3-18 uses the DO-219AB (SMF) package: a low-profile, surface-mount, single-diode configuration with cathode-marked end. The package has two terminals - anode and cathode - oriented per tape carrier direction shown in Vishay document S8-V-3717.02-003, with cathode indicated by a bar marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side | Connected to signal line requiring protection; conducts during positive transients when referenced to ground via cathode. |
| Cathode | Ground reference | Connected to system ground or low-impedance return path; defines unidirectional clamping polarity and sets VRWM relative to ground. |
Key Features
| Feature | Design Value |
|---|---|
| 200 W peak pulse power (10/1000 μs) | Enables robust protection against repetitive surge events in industrial communication ports without thermal runaway. |
| ±30 kV IEC 61000-4-2 ESD immunity | Meets highest severity level for human-body and air-gap discharge, eliminating need for external ESD test margining. |
| AEC-Q101 qualified option available | Supports automotive-grade reliability validation (H3B HBM >8 kV) when ordered as SMF5V0A-HE3_Axx variants. |
| Low-profile DO-219AB package | Reduces board area by ~30% vs. SMA/SMB packages while maintaining thermal performance via exposed copper pad compatibility. |
| "Low Noise" fast-response technology | Sub-1 ns turn-on time prevents overshoot propagation into protected ICs, preserving signal fidelity on high-speed analog/digital lines. |
Applications
| USB 2.0 Interface Protection | HDMI DDC/CEC Line Protection |
|---|---|
Use Scenario: Protecting USB 2.0 data lines (D+/D−) in portable medical devices against repeated ESD events during cable insertion. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between data line and chassis ground, clamping transients before they reach USB transceiver IC. Use Value: 9.2 V clamping voltage ensures protected transceiver remains within absolute maximum ratings during ±30 kV contact discharge. | Use Scenario: Safeguarding HDMI DDC (I²C) and CEC control lines in smart TVs from ESD during HDMI cable hot-plug operations. IC Role / Device Role / Timing Role: Standoff-limited TVS suppressing transients on bidirectional 5 V control buses without distorting low-speed I²C timing. Use Value: 5.0 V VRWM allows full 0–5 V signal swing while 1120 pF capacitance avoids I²C rise-time degradation. |
| Industrial Sensor Signal Conditioning | Automotive Body Control Module Inputs |
Use Scenario: Shielding analog outputs of pressure/temperature sensors in factory automation PLC modules from field-induced transients. IC Role / Device Role / Timing Role: Low-leakage (5 μA max at 5 V) TVS on 0–5 V analog output lines, minimizing DC error and noise injection. Use Value: 6.4–7.1 V VBR provides clean margin above 5 V rail, preventing false triggering during normal operation. | Use Scenario: Protecting wake-up inputs and LIN bus pins in BCMs exposed to harsh automotive environments per ISO 10605. IC Role / Device Role / Timing Role: AEC-Q101-qualified variant (SMF5V0A-HE3_A18) used on 12 V–ground referenced inputs with series impedance matching. Use Value: −65 °C to +175 °C operating range ensures functionality across engine bay thermal cycles without derating. |
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-E3/5A (Vishay) | DO-214AC (SMA) package; 5.0 V VRWM; 9.2 V VC at 21.2 A; 1120 pF; same electrical specs but larger footprint (4.5 × 2.7 mm). | Higher thermal mass suits higher average power dissipation; less suitable for ultra-dense layouts. | Select when board space permits and legacy SMA footprints exist; identical circuit-level performance. |
| TPD2E001DRYR (TI) | 0.65 mm × 0.65 mm DRY (X2SON) dual-channel; 5.5 V VRWM; 12 V VC at 4 A; 12 pF; integrated dual-line protection with lower capacitance. | Optimized for high-speed digital (USB 3.0, MIPI); not rated for ±30 kV ESD or automotive temp range. | Choose for space-critical, multi-line, high-frequency designs where lower capacitance outweighs ESD rating and temperature range. |
Compared with SMAJ5.0A-E3/5A, SMF5V0A-M3-18 saves >50% board area while delivering identical clamping and ESD performance; versus TPD2E001DRYR, it trades ultra-low capacitance for certified ±30 kV immunity and extended temperature capability - making it preferable for industrial and automotive signal line hardening.
Availability
SMF5V0A-M3-18 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI control line safeguarding, and industrial sensor signal conditioning requiring stable component supply across production lifecycles.
Supply support for SMF5V0A-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 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 protection for industrial, automotive, and consumer electronics, emphasizing low-clamp, low-profile packaging and AEC-Q101 qualification readiness for mission-critical signal paths.
FAQ
What is the maximum clamping voltage of the SMF5V0A-M3-18 under a 10/1000 μs surge?
The SMF5V0A-M3-18 has a maximum reverse clamping voltage (VC) of 9.2 V at 21.7 A peak pulse current (IPPM) under the 10/1000 μs waveform. This value is measured per IEC 61000-4-5 and ensures downstream ICs remain within safe operating voltage limits during surge events. The clamping performance is guaranteed across the full −65 °C to +175 °C operating temperature range, and the SMF5V0A-M3-18 maintains this specification without derating in standard PCB mounting conditions.
Is the SMF5V0A-M3-18 suitable for protecting USB 3.0 or HDMI 2.0 high-speed differential pairs?
No, the SMF5V0A-M3-18 is not recommended for USB 3.0 or HDMI 2.0 high-speed differential signaling due to its 1120 pF junction capacitance at 0 V, which would severely degrade signal integrity and exceed eye diagram mask requirements. It is validated for USB 2.0 (480 Mbps), HDMI DDC/CEC control lines, and other ≤100 Mbps interfaces. For USB 3.0 or HDMI 2.0, lower-capacitance alternatives such as the TPD2E001DRYR (12 pF) or SP3203-04UTG (0.6 pF) should be considered instead of the SMF5V0A-M3-18.
Does the SMF5V0A-M3-18 meet AEC-Q101 qualification standards?
The base SMF5V0A-M3-18 part is not AEC-Q101 qualified; however, Vishay offers AEC-Q101-qualified versions under different ordering codes - specifically SMF5V0A-HE3_A08 and SMF5V0A-HE3_A18 - which undergo full stress testing per AEC-Q101 Rev D. These variants share identical electrical characteristics and package dimensions with the SMF5V0A-M3-18 but include additional automotive reliability documentation and traceability. Always verify the suffix code when selecting for automotive applications.
What is the thermal resistance (RthJA) of the SMF5V0A-M3-18 on a standard PCB?
The SMF5V0A-M3-18 has a junction-to-ambient thermal resistance (RthJA) of 180 K/W when mounted on an epoxy-glass PCB with 3 mm × 3 mm copper pads ≥40 μm thick. This value assumes natural convection cooling and no additional heatsinking. In high-power or high-temperature environments, thermal performance can be improved by increasing copper area or adding thermal vias - but the SMF5V0A-M3-18 is primarily intended for transient suppression, not continuous power dissipation.
How does the SMF5V0A-M3-18 compare to the P6SMB5.0A in terms of package and performance?
The SMF5V0A-M3-18 uses the smaller DO-219AB (3.9 × 1.9 × 1.08 mm) package versus the P6SMB5.0A's DO-214AA (SMB, 4.58 × 3.94 × 2.29 mm), offering ~45% smaller footprint and lower profile. Electrically, both share 5.0 V VRWM and ~9.2 V VC, but the SMF5V0A-M3-18 achieves 200 W peak pulse power (10/1000 μs) in a more compact form factor and supports reflow/wave soldering per J-STD-020 MSL level 1. The P6SMB5.0A remains viable for legacy SMB footprints, but the SMF5V0A-M3-18 is preferred for modern miniaturized designs.
SMF5V0A-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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- 1120pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF5V0A-M3-18 FAQ
1.How can I place an order for SMF5V0A-M3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF5V0A-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 SMF5V0A-M3-18 reliable?
The price and inventory of SMF5V0A-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 SMF5V0A-M3-18 is usually 5 days.
3.What payment methods are accepted for SMF5V0A-M3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF5V0A-M3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF5V0A-M3-18?
SMF5V0A-M3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF5V0A-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 SMF5V0A-M3-18?
For technical support, including SMF5V0A-M3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF5V0A-M3-18 requirements.
6.How does Aetrix verify that SMF5V0A-M3-18 is sourced from the original manufacturer or authorized distributors?
All SMF5V0A-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 SMF5V0A-M3-18 meets industry standards.
7.What is the process for return or replacement of SMF5V0A-M3-18?
All SMF5V0A-M3-18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF5V0A-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 SMF5V0A-M3-18 part is unused and in its original packaging.
Return procedure for SMF5V0A-M3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF5V0A-M3-18 Tags
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