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Vishay SMF15A-HM3_A08
- Part No.:
- SMF15A-HM3_A08
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF15A-HM3_A08.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,983
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Product details
Overview
SMF15A-HM3_A08 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in the SMF (DO-219AB) package, designed for low-capacitance transient suppression on high-speed data lines. It features a 15 V stand-off voltage (VRWM), 24.4 V maximum clamping voltage at 8.2 A peak pulse current, 367 pF typical capacitance at 0 V, ±30 kV IEC 61000-4-2 ESD immunity, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMF15A-HM3_A08 datasheet, SMF15A-HM3_A08 pinout, SMF15A-HM3_A08 application, or SMF15A-HM3_A08 equivalent, this device is selected for robust electrostatic discharge protection in USB 2.0, HDMI, automotive infotainment interfaces, and industrial sensor signal conditioning where low clamping voltage and sub-1 ns response time are critical.
Technical Context
This diode operates as a unidirectional avalanche clamp, leveraging silicon planar technology to deliver fast turn-on (<1 ns) and low incremental surge resistance. Its junction temperature range spans −65 °C to +175 °C, and it sustains 200 W peak pulse power per the 10/1000 μs waveform with 0.01 % duty cycle.
The device meets IEC 61000-4-2 (±30 kV contact/air), IEC 61000-4-5 (1000 W, 8/20 μs), and AEC-Q101 Class H3B (>8 kV HBM) standards. Its SOD-123W-compatible DO-219AB package enables wave and reflow soldering while maintaining MSL Level 1 handling per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 15 V - Maximum continuous reverse voltage before significant leakage; sets operating margin for 12 V nominal bus lines. |
| Clamping Voltage (VC) | 24.4 V max at IPPM = 8.2 A - Limits transient voltage seen by protected IC during 10/1000 μs surge, preserving downstream logic integrity. |
| Peak Pulse Power (PPP) | 200 W (10/1000 μs) - Sustains short-duration surges without thermal runaway under standard telecom/industrial test conditions. |
| Capacitance (CD) | 367 pF at VR = 0 V, f = 1 MHz - Low enough for USB 2.0 (480 Mbps) signal integrity; avoids excessive rise-time degradation. |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - Exceeds Level 4 immunity requirements for handheld and exposed interface ports. |
| AEC-Q101 Qualified | Yes - Validated for automotive applications including infotainment, body control modules, and ADAS sensor interfaces. |
Pinout & Package
The SMF15A-HM3_A08 uses the DO-219AB (SOD-123W-compatible) surface-mount package: 3.9 mm × 1.9 mm × 1.08 mm, low-profile, cathode-bar marked, MSL Level 1, RoHS-compliant, tin-plated terminations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side | Connected to signal line requiring ESD protection; conducts surge current toward ground when clamped. |
| Cathode | Ground reference | Connected to system ground plane; establishes clamping threshold relative to GND and defines unidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| Low clamping voltage | 24.4 V max at 8.2 A ensures protected ICs remain below absolute maximum ratings during transients. |
| Fast response time | <1 ns turn-on enables suppression before ESD energy couples into sensitive circuitry. |
| Low profile DO-219AB package | 1.08 mm height allows integration in space-constrained automotive and portable electronics layouts. |
| AEC-Q101 qualification | Validated reliability for automotive underhood and cabin environments with extended temperature cycling and humidity exposure. |
| 367 pF capacitance | Enables use on 480 Mbps USB 2.0 and 1.65 Gbps HDMI 1.4a differential pairs without measurable eye diagram closure. |
Applications
| USB 2.0 Interface Protection | HDMI Signal Line Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 host/device ports against ESD events in consumer and industrial equipment. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed directly at connector entry point. Use Value: 367 pF capacitance preserves 480 Mbps data integrity; 24.4 V clamping prevents damage to USB PHY transceivers rated ≤30 V. |
Use Scenario: Shielding TMDS clock and data channels in HDMI 1.4a sources and sinks against contact ESD in AV receivers and displays. IC Role / Device Role / Timing Role: Point-of-entry ESD clamp on each differential pair, grounded via shortest possible path. Use Value: Sub-1 ns response captures ESD before propagation; low capacitance avoids skew between differential signals. |
| Automotive Infotainment Port | Industrial Sensor Signal Conditioning |
Use Scenario: Safeguarding USB-C and auxiliary analog audio lines in vehicle head units exposed to human touch and environmental transients. IC Role / Device Role / Timing Role: AEC-Q101-qualified unidirectional TVS diode mounted adjacent to connector pins. Use Value: −65 °C to +175 °C operating range supports under-dash mounting; ±30 kV ESD rating exceeds ISO 10605 requirements. |
Use Scenario: Protecting 4–20 mA current loop inputs and RS-485 transceiver lines in factory automation I/O modules. IC Role / Device Role / Timing Role: Standoff-limited clamp limiting induced surges to safe levels for precision op-amps and ADC front-ends. Use Value: 15 V VRWM aligns with 24 V industrial supply rails; 200 W pulse power handles lightning-induced surges per IEC 61000-4-5. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A-E3/57T | DO-214AC (SMA) package; 1.9 mm height vs. SMF15A-HM3_A08's 1.08 mm; 400 pF capacitance. | Higher profile limits PCB density; higher capacitance restricts use to ≤100 Mbps interfaces. | Select when legacy SMA footprint exists or cost sensitivity outweighs size/capacitance constraints. |
| TPD2E001DRYR | 2-channel, 0.8 pF dual-channel ESD array in SOT-553; no discrete anode/cathode; 12 V VRWM. | Designed for ultra-high-speed USB 3.0/PCIe; not rated for 200 W surge or AEC-Q101. | Choose only for low-capacitance, multi-line protection where surge energy is limited and automotive qualification is unnecessary. |
Compared with SMAJ15A-E3/57T and TPD2E001DRYR, SMF15A-HM3_A08 uniquely balances low profile (1.08 mm), moderate capacitance (367 pF), 200 W surge capability, and AEC-Q101 qualification-making it optimal for space-constrained, high-reliability automotive and industrial data interfaces.
Availability
SMF15A-HM3_A08 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial USB/HDMI interfaces, and sensor signal conditioning requiring stable component supply across long production lifecycles.
Supply support for SMF15A-HM3_A08 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 power management, sensing, and protection components with emphasis on reliability, efficiency, and automotive-grade validation.
The SMF series targets high-speed interface protection in automotive, industrial, and computing applications, delivering optimized clamping performance and AEC-Q101 compliance in compact surface-mount packages.
FAQ
What is the clamping voltage of SMF15A-HM3_A08 and how is it measured?
The SMF15A-HM3_A08 has a maximum reverse clamping voltage (VC) of 24.4 V, measured at a peak pulse current (IPPM) of 8.2 A using a 10/1000 μs waveform. This value reflects the voltage across the diode during standardized surge testing and defines the upper limit of transient voltage imposed on protected circuitry. The specification is guaranteed per Vishay's Rev. 2.4 datasheet (Document Number: 85881).
Is SMF15A-HM3_A08 suitable for USB 2.0 data line protection?
Yes, SMF15A-HM3_A08 is suitable for USB 2.0 data line protection due to its 367 pF typical capacitance at 0 V and 1 MHz, which introduces negligible signal distortion at 480 Mbps. Its 15 V stand-off voltage aligns with USB 2.0 VBUS margins, and its ±30 kV IEC 61000-4-2 rating exceeds USB-IF ESD requirements. Layout best practices-short traces, direct ground connection-must be followed to preserve performance.
Does SMF15A-HM3_A08 meet automotive qualification standards?
Yes, SMF15A-HM3_A08 is AEC-Q101 qualified, confirming its suitability for automotive applications including infotainment, body electronics, and ADAS sensor interfaces. It passes stress tests for temperature cycling, humidity, mechanical shock, and ESD per AEC-Q101 Rev. D, and operates across −65 °C to +175 °C junction temperature range-validated in Vishay's official qualification report.
What is the package type and dimensions of SMF15A-HM3_A08?
SMF15A-HM3_A08 uses the DO-219AB package (also referenced as SOD-123W-compatible), measuring 3.9 mm × 1.9 mm × 1.08 mm with a cathode bar marking. Its footprint recommendation is 2.9 mm × 1.4 mm, and it complies with MSL Level 1 per J-STD-020. The package supports both wave and reflow soldering with peak temperatures up to 260 °C.
How does the capacitance of SMF15A-HM3_A08 affect high-speed signal integrity?
The SMF15A-HM3_A08 exhibits 367 pF typical capacitance at 0 V bias and 1 MHz, which is low enough to avoid measurable rise-time degradation or eye closure on USB 2.0 (480 Mbps) and HDMI 1.4a (1.65 Gbps) differential pairs when properly laid out. Capacitance decreases with increasing reverse bias-e.g., ~150 pF at 12 V-further minimizing loading on active signal lines during normal operation.
SMF15A-HM3_A08 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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 8.2A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 367pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF15A-HM3_A08 FAQ
1.How can I place an order for SMF15A-HM3_A08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF15A-HM3_A08 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 SMF15A-HM3_A08 reliable?
The price and inventory of SMF15A-HM3_A08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF15A-HM3_A08 is usually 5 days.
3.What payment methods are accepted for SMF15A-HM3_A08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF15A-HM3_A08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF15A-HM3_A08?
SMF15A-HM3_A08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF15A-HM3_A08 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 SMF15A-HM3_A08?
For technical support, including SMF15A-HM3_A08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF15A-HM3_A08 requirements.
6.How does Aetrix verify that SMF15A-HM3_A08 is sourced from the original manufacturer or authorized distributors?
All SMF15A-HM3_A08 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 SMF15A-HM3_A08 meets industry standards.
7.What is the process for return or replacement of SMF15A-HM3_A08?
All SMF15A-HM3_A08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF15A-HM3_A08, 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 SMF15A-HM3_A08 part is unused and in its original packaging.
Return procedure for SMF15A-HM3_A08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF15A-HM3_A08 Tags
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