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Vishay SMF5V0A-HM3_A18
- Part No.:
- SMF5V0A-HM3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF5V0A-HM3_A18.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,074
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Product details
Overview
SMF5V0A-HM3_A18 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, 1120 pF typical junction capacitance at 0 V, and ±30 kV IEC 61000-4-2 ESD immunity.
For engineers reviewing the SMF5V0A-HM3_A18 datasheet, SMF5V0A-HM3_A18 pinout, SMF5V0A-HM3_A18 application, or SMF5V0A-HM3_A18 equivalent, this device is selected for robust electrostatic discharge protection in USB 2.0, HDMI, and automotive infotainment interfaces where low clamping voltage and fast response time are critical to safeguarding sensitive transceivers.
Technical Context
This diode operates as a unidirectional TVS device with avalanche breakdown behavior, optimized for clamping transients before IC damage occurs. Its low incremental surge resistance ensures minimal voltage overshoot during 10/1000 μs surges, while its "Low Noise" technology delivers sub-nanosecond response time under ESD stress.
The SMF5V0A-HM3_A18 is AEC-Q101 qualified and rated for operation from −65 °C to +175 °C, supporting automotive under-hood and infotainment applications. Its SOD-123W-compatible DO-219AB package enables high-density PCB layouts with wave and reflow solderability per J-STD-020 MSL level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 5.0 V - Maximum continuous reverse operating voltage before leakage exceeds 5 µA; sets threshold for signal integrity preservation on 5 V logic/data lines. |
| Breakdown Voltage (VBR) | 6.4–7.1 V at 10 mA - Confirmed avalanche onset range; ensures reliable triggering above normal operating voltage but below IC absolute maximum ratings. |
| Clamping Voltage (VC) | 9.2 V max at 21.7 A (10/1000 µs) - Peak voltage seen by protected circuit during surge; low enough to protect 5 V I/O pins of microcontrollers and PHYs. |
| Junction Capacitance (CD) | 1120 pF at 0 V, 1 MHz - Measured value impacts high-speed signal integrity; suitable for ≤480 Mbps USB 2.0 but not USB 3.x or PCIe. |
| ESD Rating | ±30 kV contact / ±30 kV air (IEC 61000-4-2) - Full compliance with industrial and automotive ESD immunity requirements without external filtering. |
| Peak Pulse Power | 200 W (10/1000 µs), 1000 W (8/20 µs) - Sustains multiple transient events in real-world environments including load dump and coupling noise. |
| Operating Temperature | −65 °C to +175 °C - Enables deployment in engine control units, ADAS sensors, and powertrain modules without derating. |
Pinout & Package
The SMF5V0A-HM3_A18 uses the DO-219AB (SMF) package: low-profile (1.08 mm max height), molded epoxy case with cathode bar marking, compatible with SOD-123W footprint. Dimensions: 3.9 × 1.9 × 1.08 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side | Connected to signal line requiring protection; conducts during positive transients when cathode is biased higher. |
| Cathode | Ground reference | Connected to system ground or low-impedance return path; defines unidirectional clamping direction and polarity sensitivity. |
Key Features
| Feature | Design Value |
|---|---|
| 200 W peak pulse power (10/1000 µs) | Enables repeated surge handling in industrial communication ports without thermal runaway or parameter shift. |
| ±30 kV IEC 61000-4-2 ESD immunity | Eliminates need for secondary ESD protection stages in consumer and automotive USB/HDMI interfaces. |
| AEC-Q101 qualification | Validated reliability for automotive electronics including infotainment, telematics, and body control modules. |
| Low clamping voltage (9.2 V @ 21.7 A) | Protects 5 V logic-level ICs such as USB transceivers and display serializers without overvoltage stress. |
| 1120 pF junction capacitance | Preserves signal rise/fall times on 480 Mbps USB 2.0 links while maintaining adequate surge margin. |
Applications
| USB 2.0 Data Lines | HDMI DDC Channel |
|---|---|
Use Scenario: Protection of differential D+ and D− lines in portable USB hosts and peripherals against ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between each data line and chassis ground, triggered within <1 ns to clamp transients. Use Value: Prevents latch-up or gate oxide damage in USB PHY ICs while maintaining eye diagram integrity up to 480 Mbps. |
Use Scenario: Safeguarding the bidirectional I²C-based Display Data Channel (DDC) in HDMI source/sink devices from user-handling ESD. IC Role / Device Role / Timing Role: Standoff-mode protector on SDA/SCL lines, leveraging 5.0 V VRWM to avoid interference with 3.3 V I²C signaling. Use Value: Maintains I²C timing margins (400 kHz standard mode) with no added propagation delay or bus loading beyond specified 1120 pF. |
| Automotive Infotainment | Industrial Serial Interface |
Use Scenario: ESD hardening of touch controller and audio codec interfaces in head units exposed to cabin ESD sources. IC Role / Device Role / Timing Role: Primary front-end protection on analog audio inputs and digital I²C/SPI buses, mounted adjacent to connectors. Use Value: Supports AEC-Q101 temperature cycling and humidity testing, ensuring long-term reliability across −40 °C to +85 °C ambient operation. |
Use Scenario: Transient suppression on RS-485/RS-422 differential pairs in factory automation controllers subject to cable-induced surges. IC Role / Device Role / Timing Role: Line-side clamping device on A/B bus lines referenced to local ground, configured for common-mode surge rejection. Use Value: Withstands 200 W 10/1000 µs pulses without degradation, enabling >100,000 surge cycles in harsh plant-floor environments. |
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 | Higher clamping voltage (11.2 V), larger SMA package (4.5 × 2.7 mm), 600 W peak power (10/1000 µs) | Less suitable for space-constrained 5 V logic lines; better for higher-energy industrial surges | Select when board area allows larger footprint and clamping voltage margin >6.2 V is acceptable. |
| TPD2E001DRYR | Lower capacitance (11 pF), dual-channel, 5.5 V VRWM, ±8 kV HBM, not AEC-Q101 qualified | Targeted at portable consumer USB ports; lacks automotive qualification and high-energy surge rating | Choose for handheld devices needing ultra-low capacitance, but not for automotive or industrial surge-prone environments. |
Compared with SMAJ5.0A-E3/5A and TPD2E001DRYR, the SMF5V0A-HM3_A18 uniquely balances AEC-Q101 qualification, compact DO-219AB packaging, 9.2 V clamping, and ±30 kV ESD robustness-making it optimal for automotive infotainment and industrial USB 2.0 interfaces where reliability and size are co-constrained.
Availability
SMF5V0A-HM3_A18 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial USB 2.0 interfaces, and HDMI DDC protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMF5V0A-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 semiconductor manufacturer specializing in discrete components, passive elements, and sensors, with leadership in reliability-critical power and protection devices.
The SMF series was developed specifically for high-reliability ESD and surge protection in automotive and industrial applications, emphasizing AEC-Q101 qualification, low clamping, and compact surface-mount form factors.
FAQ
What is the primary function of the SMF5V0A-HM3_A18?
The SMF5V0A-HM3_A18 is a unidirectional transient voltage suppression (TVS) diode engineered to protect sensitive electronic circuits from electrostatic discharge (ESD) and electrical fast transients. It clamps voltage spikes to 9.2 V at 21.7 A, preserving signal integrity on 5 V data lines. As part of Vishay's SMF eSMP® series, the SMF5V0A-HM3_A18 delivers ±30 kV IEC 61000-4-2 immunity in a compact DO-219AB package.
Is the SMF5V0A-HM3_A18 AEC-Q101 qualified?
Yes, the SMF5V0A-HM3_A18 is AEC-Q101 qualified for automotive applications, having passed stress tests including high-temperature operating life, temperature cycling, and ESD per human body model (H3B >8 kV). This qualification confirms its suitability for under-hood and cabin electronics where reliability across −65 °C to +175 °C is mandatory. The SMF5V0A-HM3_A18 meets these requirements without derating.
What does the marking "HM3_A18" indicate in SMF5V0A-HM3_A18?
The "HM3_A18" suffix denotes Vishay's packaging and environmental coding: "H" indicates AEC-Q101 qualification, "M3" specifies lead (Pb)-free, RoHS-compliant tin plating, and "_A18" identifies 10k per 13″ reel packaging with 8 mm tape width and MOQ of 50k units. This matches the ordering code SMF5V0A-HE3_A18 in Vishay's documentation. The SMF5V0A-HM3_A18 is fully traceable to this configuration.
Can the SMF5V0A-HM3_A18 be used on USB 3.0 or HDMI 2.0 lines?
No, the SMF5V0A-HM3_A18 is not recommended for USB 3.0 or HDMI 2.0 due to its 1120 pF junction capacitance, which would severely degrade signal integrity at multi-Gbps data rates. It is validated for USB 2.0 (480 Mbps) and HDMI DDC (I²C, ≤400 kHz), where capacitance impact is manageable. For higher-speed interfaces, lower-capacitance alternatives like the TPD2E001DRYR (11 pF) are appropriate-but lack AEC-Q101 and high-energy surge capability. The SMF5V0A-HM3_A18 targets robustness, not bandwidth.
How does the SMF5V0A-HM3_A18 compare to standard 5.0 V Zener diodes?
Unlike general-purpose Zener diodes, the SMF5V0A-HM3_A18 is optimized for transient suppression-not voltage regulation-with tightly controlled dynamic impedance, sub-nanosecond response, and guaranteed clamping performance under 10/1000 µs surges. Its 9.2 V VC at 21.7 A provides predictable protection, whereas Zeners exhibit higher dynamic resistance and inconsistent clamping. The SMF5V0A-HM3_A18 also offers ±30 kV ESD rating and AEC-Q101 qualification-features absent in standard Zeners.
SMF5V0A-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):
- 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 (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF5V0A-HM3_A18 FAQ
1.How can I place an order for SMF5V0A-HM3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF5V0A-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 SMF5V0A-HM3_A18 reliable?
The price and inventory of SMF5V0A-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 SMF5V0A-HM3_A18 is usually 5 days.
3.What payment methods are accepted for SMF5V0A-HM3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF5V0A-HM3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF5V0A-HM3_A18?
SMF5V0A-HM3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF5V0A-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 SMF5V0A-HM3_A18?
For technical support, including SMF5V0A-HM3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF5V0A-HM3_A18 requirements.
6.How does Aetrix verify that SMF5V0A-HM3_A18 is sourced from the original manufacturer or authorized distributors?
All SMF5V0A-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 SMF5V0A-HM3_A18 meets industry standards.
7.What is the process for return or replacement of SMF5V0A-HM3_A18?
All SMF5V0A-HM3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF5V0A-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 SMF5V0A-HM3_A18 part is unused and in its original packaging.
Return procedure for SMF5V0A-HM3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF5V0A-HM3_A18 Tags
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