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Vishay SMF6V5A-HM3_A18
- Part No.:
- SMF6V5A-HM3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF6V5A-HM3_A18.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,412
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Product details
Overview
SMF6V5A-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 in high-speed data lines. It features a 6.5 V stand-off voltage, 11.2 V maximum clamping voltage at 17.9 A peak pulse current, ±30 kV IEC 61000-4-2 ESD immunity, and 200 W peak pulse power (10/1000 μs). It is AEC-Q101 qualified and used in automotive infotainment USB interfaces.
For engineers reviewing the SMF6V5A-HM3_A18 datasheet, SMF6V5A-HM3_A18 pinout, SMF6V5A-HM3_A18 application, or SMF6V5A-HM3_A18 equivalent, key selection criteria include clamping voltage vs. signal integrity trade-offs, capacitance-dependent bandwidth limits, AEC-Q101 qualification status for automotive deployment, and SOD-123W-compatible footprint compatibility with existing PCB layouts.
Technical Context
This device operates as a single-channel unidirectional TVS diode, leveraging silicon avalanche breakdown to clamp transients above its reverse stand-off voltage (VRWM = 6.5 V) while maintaining low leakage (<20 μA) below that threshold. Its low 938 pF typical junction capacitance at 0 V enables use on 100 Mbps+ digital lines without signal degradation.
The SMF6V5A-HM3_A18 employs "Low Noise" fast-response technology with sub-nanosecond turn-on, ensuring effective suppression of ESD events per IEC 61000-4-2 (±30 kV contact/air) and surge transients per IEC 61000-4-5 (1000 W, 8/20 μs). It is rated for continuous operation from −65 °C to +175 °C and meets AEC-Q101 stress test requirements for automotive under-hood and infotainment applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 6.5 V - Maximum continuous reverse voltage before clamping begins; sets minimum signal swing margin for protected line. |
| Clamping Voltage (VC) | 11.2 V max at 17.9 A - Peak voltage seen by downstream circuit during worst-case 10/1000 μs surge; defines IC survival threshold. |
| Junction Capacitance (CD) | 938 pF at 0 V, 1 MHz - Directly impacts high-frequency signal integrity; suitable for USB 2.0 (480 Mbps) but not USB 3.x. |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - Validates robustness against human-body ESD events in production and end-use environments. |
| Peak Pulse Power | 200 W (10/1000 μs), 1000 W (8/20 μs) - Determines survivability against lightning-induced surges and system-level transients. |
| AEC-Q101 Qualified | Yes - Confirms reliability for automotive applications including temperature cycling, mechanical shock, and humidity testing per AEC standard. |
| Package | DO-219AB (SOD-123W compatible) - 3.9 mm × 1.9 mm × 1.08 mm low-profile outline enabling high-density routing and automated assembly. |
Pinout & Package
SMF6V5A-HM3_A18 uses the DO-219AB (SMF) package: a 2-terminal surface-mount case with cathode bar marking. Dimensions are 3.9 mm length × 1.9 mm width × 1.08 mm height. The package is compatible with SOD-123W, SOD-123F, and SOD-123FL footprints and supports wave and reflow soldering (peak temp ≤ 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Signal path input (protected side) | Connected to the line requiring ESD protection (e.g., USB D+); conducts forward during clamping to divert surge to ground. |
| Cathode | Ground reference terminal | Connected to system ground plane; establishes clamping reference and provides low-inductance return path for transient current. |
Key Features
| Feature | Design Value |
|---|---|
| 200 W peak pulse power (10/1000 μs) | Enables reliable protection against repetitive ESD and surge events in industrial control I/O without thermal runaway. |
| ±30 kV IEC 61000-4-2 ESD immunity | Meets highest-tier system-level ESD compliance for automotive and medical handheld devices without external shielding. |
| 938 pF junction capacitance | Preserves signal rise time on USB 2.0 and HDMI 1.4 lines; avoids bit errors or eye diagram closure in 480 Mbps links. |
| AEC-Q101 qualification | Validates long-term reliability under automotive thermal cycling (−40 °C to +125 °C), vibration, and humidity stress conditions. |
| Low-profile DO-219AB package | Reduces board space by 30% vs. SMA packages; supports fine-pitch routing and high-density PCB stacking in compact modules. |
Applications
| Automotive Infotainment USB Port | Industrial PLC Serial Interface |
|---|---|
Use Scenario: Protecting USB 2.0 D+/D− lines in head unit docking stations exposed to repeated plug/unplug ESD events. IC Role / Device Role / Timing Role: Unidirectional TVS diode providing primary board-level ESD shunt path before signal reaches USB transceiver IC. Use Value: Prevents latch-up or gate oxide damage in USB PHY ICs by clamping transients to ≤11.2 V while adding <1 ns delay. | Use Scenario: Shielding RS-485 transceiver pins in factory-floor programmable logic controllers subject to cable discharge events. IC Role / Device Role / Timing Role: Standoff-clamp TVS element placed directly at connector entry point to suppress >15 kV contact ESD before reaching differential bus driver. Use Value: Maintains signal integrity with 938 pF capacitance-low enough to avoid degrading 10 Mbps RS-485 edge rates. |
| Medical Patient Monitor Touch Interface | Consumer Smart Home Hub Ethernet PHY |
Use Scenario: Safeguarding capacitive touch controller I/O lines in portable diagnostic devices handled by clinical staff. IC Role / Device Role / Timing Role: Low-leakage (≤20 μA) ESD clamp ensuring no DC loading on high-impedance touch sense nodes. Use Value: Enables direct integration without recalibrating touch sensitivity; AEC-Q101 grade ensures stability across sterilization temperature cycles. | Use Scenario: Protecting 10/100BASE-TX Ethernet PHY MDI pins in Wi-Fi mesh hubs installed in residential environments. IC Role / Device Role / Timing Role: Secondary-level transient suppressor complementing common-mode chokes and primary TVS arrays on RJ45 magnetics. Use Value: Adds localized clamping at PHY die with 11.2 V VC, preventing receiver saturation during nearby lightning-induced surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.5A-E3/57T | Higher clamping voltage (11.5 V), larger SMA package (4.5 mm × 2.7 mm), 600 pF capacitance | Lower density placement; better suited for lower-speed lines (e.g., CAN, LIN) where capacitance is less critical | Select when board layout allows larger footprint and higher clamping is acceptable for cost-sensitive industrial designs. |
| TPD2E001DRYR | Bi-directional, dual-channel, 12 pF capacitance, 5.5 V VRWM, not AEC-Q101 qualified | Designed for ultra-high-speed interfaces (USB 3.0, HDMI); lacks automotive qualification and single-line surge rating | Choose only for consumer-grade high-bandwidth applications where AEC-Q101 is unnecessary and low capacitance is mandatory. |
Compared with SMAJ6.5A-E3/57T and TPD2E001DRYR, SMF6V5A-HM3_A18 delivers optimal balance of automotive qualification, moderate capacitance (938 pF), and compact DO-219AB packaging-making it the preferred choice for space-constrained, safety-critical USB and serial interfaces in automotive and industrial systems.
Availability
SMF6V5A-HM3_A18 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial PLC I/O modules, and medical patient monitor interfaces requiring stable component supply and AEC-Q101-compliant ESD protection.
Supply support for SMF6V5A-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, headquartered in Malvern, PA, with R&D and manufacturing operations across Asia, Europe, and the Americas.
The SMF series targets high-reliability transient suppression in automotive, industrial, and medical electronics, emphasizing AEC-Q101 qualification, low-profile packaging, and precise clamping performance for sensitive high-speed signal lines.
FAQ
What is the clamping voltage specification for SMF6V5A-HM3_A18 under standard test conditions?
The SMF6V5A-HM3_A18 has a maximum reverse clamping voltage (VC) of 11.2 V at a peak pulse current (IPPM) of 17.9 A using a 10/1000 μs waveform. This value is measured per IEC 61000-4-5 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMF6V5A-HM3_A18 maintains this clamping performance across its full operating temperature range of −65 °C to +175 °C.
Is SMF6V5A-HM3_A18 qualified to AEC-Q101, and what does that mean for automotive use?
Yes, SMF6V5A-HM3_A18 is AEC-Q101 qualified, confirming it has passed stress tests including temperature cycling, high-temperature operating life, and ESD robustness required for automotive electronic components. This qualification validates its suitability for under-hood and cabin applications such as infotainment USB ports and body control module interfaces. The SMF6V5A-HM3_A18 meets these requirements in its DO-219AB package without derating.
What is the junction capacitance of SMF6V5A-HM3_A18, and how does it affect high-speed signal lines?
The SMF6V5A-HM3_A18 exhibits a typical junction capacitance of 938 pF at 0 V and 1 MHz. This value directly influences signal integrity: it is appropriate for USB 2.0 (480 Mbps) and RS-485 (10 Mbps) but may degrade eye diagrams in USB 3.x or HDMI 2.0 applications. Designers must verify timing margins in their specific layout. The SMF6V5A-HM3_A18's capacitance remains stable across bias voltages up to VRWM.
Can SMF6V5A-HM3_A18 be used in bidirectional signal protection applications?
No, SMF6V5A-HM3_A18 is a unidirectional ESD protection diode, optimized for clamping positive transients on grounded-signal lines. It is not suitable for bidirectional AC-coupled or floating lines like HDMI or PCIe. For such applications, a bidirectional variant (e.g., SMF6V5CA) or dual-diode array would be required. The SMF6V5A-HM3_A18's anode-to-cathode polarity must be correctly oriented relative to the protected signal's DC bias.
What package type does SMF6V5A-HM3_A18 use, and is it compatible with standard SOD-123W footprints?
SMF6V5A-HM3_A18 uses the DO-219AB (SMF) package, measuring 3.9 mm × 1.9 mm × 1.08 mm. Vishay explicitly states compatibility with SOD-123W, SOD-123F, and SOD-123FL outlines. Its land pattern matches industry-standard SOD-123W pads, enabling drop-in replacement in existing designs without PCB revision-provided thermal relief and solder mask clearance meet DO-219AB recommendations.
SMF6V5A-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):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 17.9A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 938pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF6V5A-HM3_A18 FAQ
1.How can I place an order for SMF6V5A-HM3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF6V5A-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 SMF6V5A-HM3_A18 reliable?
The price and inventory of SMF6V5A-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 SMF6V5A-HM3_A18 is usually 5 days.
3.What payment methods are accepted for SMF6V5A-HM3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF6V5A-HM3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF6V5A-HM3_A18?
SMF6V5A-HM3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF6V5A-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 SMF6V5A-HM3_A18?
For technical support, including SMF6V5A-HM3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF6V5A-HM3_A18 requirements.
6.How does Aetrix verify that SMF6V5A-HM3_A18 is sourced from the original manufacturer or authorized distributors?
All SMF6V5A-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 SMF6V5A-HM3_A18 meets industry standards.
7.What is the process for return or replacement of SMF6V5A-HM3_A18?
All SMF6V5A-HM3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF6V5A-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 SMF6V5A-HM3_A18 part is unused and in its original packaging.
Return procedure for SMF6V5A-HM3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF6V5A-HM3_A18 Tags
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