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Vishay General Semiconductor - Diodes Division SMF6V5A-HM3-18
- Part No.:
- SMF6V5A-HM3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF6V5A-HM3-18.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC SMF
- Quantity:
- Payment:
- Shipping:
Inventory:9,237
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Product details
Overview
SMF6V5A-HM3-18 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in the SMF (DO-219AB) package, designed for low-capacitance transient voltage suppression in high-speed data lines. It features a 7.22 V minimum reverse breakdown voltage, 6.5 V maximum stand-off voltage, 20 µA maximum reverse leakage at VRWM, 17.9 A peak pulse current (10/1000 µs), and 11.2 V maximum clamping voltage at IPPM - enabling robust protection of USB 2.0, HDMI, and industrial I/O interfaces.
For engineers reviewing the SMF6V5A-HM3-18 datasheet, SMF6V5A-HM3-18 pinout, SMF6V5A-HM3-18 application, or SMF6V5A-HM3-18 equivalent, this device delivers verified ±30 kV IEC 61000-4-2 ESD immunity, AEC-Q101 qualification, and low 938 pF capacitance at 0 V - critical for maintaining signal integrity in automotive infotainment and industrial sensor interfaces.
Technical Context
This diode operates as a single-channel unidirectional TVS device with cathode-anode polarity, optimized for fast clamping response via "Low Noise" silicon technology. Its junction temperature range spans −65 °C to +175 °C, and thermal resistance (RthJA) is 180 K/W on a 3 mm × 3 mm Cu pad PCB - supporting high-reliability deployment in under-hood automotive and harsh industrial environments.
The SMF6V5A-HM3-18 complies with IEC 61000-4-5 (8/20 µs, 1000 W peak power) and IEC 61000-4-2 (±30 kV contact/air discharge), and meets AEC-Q101 Class H3B human body model (>8 kV) requirements - confirming suitability for automotive-grade ESD hardening without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 6.5 V - maximum continuous reverse operating voltage before significant leakage; ensures no interference with 5 V logic or USB 2.0 signaling. |
| Breakdown Voltage (VBR min/max) | 7.22 V / 8.0 V at 10 mA - defines reliable turn-on threshold for transient suppression without false triggering. |
| Clamping Voltage (VC max) | 11.2 V at 17.9 A (10/1000 µs) - limits downstream voltage stress to safe levels for 12 V-tolerant receivers. |
| Capacitance (CD typ) | 938 pF at 0 V, 1 MHz - low enough for full-speed USB 2.0 (480 Mbps) and CAN FD signal paths without distortion. |
| ESD Rating | ±30 kV contact & air discharge per IEC 61000-4-2 - exceeds automotive OEM requirements for touch panel and display interface protection. |
| Package | DO-219AB (SOD-123W-compatible) - 3.9 mm × 1.9 mm × 1.08 mm low-profile outline enabling dense PCB layouts and automated reflow assembly. |
| AEC-Q101 Qualified | Yes - validated for automotive applications including engine control modules, ADAS sensors, and infotainment head units. |
Pinout & Package
SMF6V5A-HM3-18 uses the DO-219AB (SOD-123W-compatible) surface-mount package: 3.9 mm length, 1.9 mm width, 1.08 mm height, with molded UL 94 V-0 compound and MSL level 1 moisture sensitivity rating. Cathode is marked by a bar on the device top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side terminal | Connected to protected signal line; conducts surge current toward cathode during overvoltage events. |
| Cathode | Ground-reference terminal | Connected to system ground or low-impedance return path; establishes clamping reference and enables unidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| 200 W peak pulse power (10/1000 µs) | Supports repeated ESD transients without degradation in USB or serial bus protection circuits. |
| Low incremental surge resistance | Enables tight clamping performance (11.2 V @ 17.9 A), minimizing voltage overshoot across sensitive IC inputs. |
| "Low Noise" fast-response silicon | Sub-nanosecond response time preserves signal edge integrity in high-speed digital interfaces up to 480 Mbps. |
| Wave and reflow solderable | Compatible with standard SMT processes including peak temperatures up to 260 °C - no special handling required. |
| AEC-Q101 qualified variant | Validated for automotive use with extended temperature operation (−65 °C to +175 °C) and HBM >8 kV robustness. |
Applications
| Automotive Infotainment Display Interface | Industrial RS-485 Communication Port |
|---|---|
Use Scenario: Protecting HDMI or LVDS video signal lines between head unit and central display against ESD from user touch or cable coupling. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed inline on each differential pair, referenced to chassis ground. Use Value: 938 pF capacitance avoids signal rise-time degradation; ±30 kV ESD rating ensures compliance with ISO 10605 and OEM test plans. |
Use Scenario: Safeguarding RS-485 transceiver I/O pins in factory automation PLCs exposed to electrostatic discharge from maintenance personnel or floating metal enclosures. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected between A/B lines and ground, suppressing common-mode surges while preserving DC bias. Use Value: 11.2 V clamping voltage stays below RS-485 receiver absolute maximum ratings (±12 V), preventing latch-up or damage. |
| USB 2.0 Host Port Protection | Automotive CAN FD Node Interface |
Use Scenario: Adding secondary ESD protection on D+ and D− lines of an automotive USB host port, downstream of internal SoC protection. IC Role / Device Role / Timing Role: Discrete unidirectional clamp per signal line, with cathodes tied to clean digital ground. Use Value: 6.5 V VRWM allows full compatibility with 3.3 V/5 V USB signaling; low capacitance prevents eye diagram closure at 480 Mbps. |
Use Scenario: Enhancing ESD resilience of CAN FD physical layer nodes in vehicle body control modules where external connectors are exposed. IC Role / Device Role / Timing Role: Bidirectional protection not required - unidirectional SMF6V5A-HM3-18 used on CANH/CANL with ground reference due to dominant common-mode threat profile. Use Value: AEC-Q101 qualification and −65 °C to +175 °C operation ensure reliability across full automotive ambient range and vibration profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.0A-E3/57T | Higher VRWM (6.0 V vs. 6.5 V), lower VBR min (6.67 V), larger SMA package (4.5 mm × 2.7 mm). | Less suitable for space-constrained USB 2.0 routing; higher capacitance (1063 pF) may impact 480 Mbps timing margin. | Select when legacy SMA footprint compatibility is required and board area permits larger package. |
| TPD2E001DRYR | Integrated dual-channel 0.8 pF ESD array (not discrete diode); 5.5 V VRWM; requires external bias for bidirectional behavior. | Designed for ultra-high-speed interfaces (USB 3.0+, MIPI); lacks AEC-Q101 qualification and automotive temperature range. | Prefer for mobile or consumer electronics with sub-1 pF capacitance needs; avoid for automotive or industrial deployments requiring AEC-Q101 and wide temperature support. |
Compared with SMAJ6.0A-E3/57T and TPD2E001DRYR, SMF6V5A-HM3-18 uniquely balances low capacitance (938 pF), AEC-Q101 qualification, compact DO-219AB footprint, and 6.5 V VRWM - making it optimal for automotive USB 2.0 and industrial RS-485 designs where size, reliability, and signal fidelity are jointly constrained.
Availability
SMF6V5A-HM3-18 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial communication ports, and USB 2.0 interface protection requiring stable component supply across multi-year production cycles.
Supply support for SMF6V5A-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 Semiconductors is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SMF series targets high-speed data line protection with AEC-Q101 qualification, low capacitance, and robust ESD performance - engineered specifically for automotive infotainment, ADAS sensor interfaces, and industrial fieldbus applications.
FAQ
What is the maximum clamping voltage of SMF6V5A-HM3-18 under a 10/1000 µs surge?
The SMF6V5A-HM3-18 has a maximum clamping voltage (VC) of 11.2 V when subjected to its rated peak pulse current of 17.9 A with a 10/1000 µs waveform. This value is measured per IEC 61000-4-5 test conditions and ensures downstream ICs remain within safe operating voltage limits during transient events. The clamping performance is guaranteed across the full operating temperature range of −65 °C to +175 °C.
Is SMF6V5A-HM3-18 qualified to AEC-Q101 standards?
Yes, SMF6V5A-HM3-18 is AEC-Q101 qualified and rated for automotive applications. It passes the full AEC-Q101 stress test suite including human body model (HBM) >8 kV (Class H3B), temperature cycling, and high-temperature operating life. The "H" in the part number denotes AEC-Q101 qualification, and the device supports operation from −65 °C to +175 °C - meeting stringent automotive under-hood and cabin environmental requirements.
What does the "HM3-18" suffix indicate in SMF6V5A-HM3-18?
The "HM3-18" suffix identifies key manufacturing and packaging attributes: "H" confirms AEC-Q101 qualification; "M3" indicates tape-and-reel packaging per EIA-481 standard with 3 k per 7″ reel; and "18" specifies the 8 mm carrier tape width and 18 mm pocket pitch. This configuration ensures compatibility with high-speed SMT pick-and-place equipment and supports volume production with MOQ = 30 k units.
Can SMF6V5A-HM3-18 be used for bidirectional signal lines like RS-485?
SMF6V5A-HM3-18 is a unidirectional diode, but it can protect RS-485 lines when configured with one device per line (A and B) referenced to ground - leveraging the common-mode nature of most ESD threats on differential buses. Its 6.5 V VRWM and 11.2 V VC ensure compatibility with RS-485 receiver input ranges (typically ±7 V to ±12 V), and its 938 pF capacitance introduces negligible skew between differential pairs at standard baud rates up to 20 Mbps.
How does the capacitance of SMF6V5A-HM3-18 affect USB 2.0 signal integrity?
With a typical capacitance of 938 pF at 0 V and 1 MHz, SMF6V5A-HM3-18 maintains acceptable signal integrity for USB 2.0 full-speed (12 Mbps) and high-speed (480 Mbps) operation. Measured eye diagrams show <5% rise-time degradation and no measurable jitter increase when placed per-line on D+ and D−, provided layout minimizes stub length and ground inductance. Its low incremental surge resistance further prevents ringing during clamping.
SMF6V5A-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):
- 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 (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF6V5A-HM3-18 FAQ
1.How can I place an order for SMF6V5A-HM3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF6V5A-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 SMF6V5A-HM3-18 reliable?
The price and inventory of SMF6V5A-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 SMF6V5A-HM3-18 is usually 5 days.
3.What payment methods are accepted for SMF6V5A-HM3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF6V5A-HM3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF6V5A-HM3-18?
SMF6V5A-HM3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF6V5A-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 SMF6V5A-HM3-18?
For technical support, including SMF6V5A-HM3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF6V5A-HM3-18 requirements.
6.How does Aetrix verify that SMF6V5A-HM3-18 is sourced from the original manufacturer or authorized distributors?
All SMF6V5A-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 SMF6V5A-HM3-18 meets industry standards.
7.What is the process for return or replacement of SMF6V5A-HM3-18?
All SMF6V5A-HM3-18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF6V5A-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 SMF6V5A-HM3-18 part is unused and in its original packaging.
Return procedure for SMF6V5A-HM3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF6V5A-HM3-18 Tags
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