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Vishay General Semiconductor - Diodes Division SMF16A-HM3-08
- Part No.:
- SMF16A-HM3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF16A-HM3-08.pdf
- Description:
- TVS DIODE 16VWM 26VC SMF
- Quantity:
- Payment:
- Shipping:
Inventory:6,189
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Product details
Overview
SMF16A-HM3-08 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in the SMF (DO-219AB) package, designed for transient voltage suppression in high-speed data lines. It features a 16 V stand-off voltage (VRWM), 26 A peak pulse current (IPPM) at 10/1000 μs, 26 V maximum clamping voltage (VC), 343 pF typical capacitance at 0 V, and ±30 kV IEC 61000-4-2 ESD immunity - deployed in USB 2.0 interfaces and industrial sensor signal conditioning.
For engineers reviewing the SMF16A-HM3-08 datasheet, SMF16A-HM3-08 pinout, SMF16A-HM3-08 application, or SMF16A-HM3-08 equivalent, key selection criteria include clamping voltage vs. protected IC's absolute maximum rating, capacitance impact on signal integrity, AEC-Q101 qualification status, and SOD-123W-compatible footprint compatibility with automated assembly.
Technical Context
This device operates as a single-channel unidirectional TVS diode, leveraging silicon avalanche breakdown to clamp transients above VRWM while maintaining low leakage (<0.1 μA at 16 V). Its low incremental surge resistance enables fast response and tight clamping under 10/1000 μs surges.
The SMF16A-HM3-08 uses "Low Noise" technology for sub-nanosecond response time and is qualified to AEC-Q101 for automotive-grade reliability, with operating temperature range from –65 °C to +175 °C and MSL level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 16 V - maximum continuous reverse voltage before clamping begins; matches 15 V nominal supply rails with margin. |
| Clamping Voltage (VC) | 26 V max at 7.7 A IPPM - ensures protected IC inputs remain below 30 V absolute maximum rating during surge events. |
| Peak Pulse Current (IPPM) | 7.7 A at 10/1000 μs - supports IEC 61000-4-5 Level 3 (1 kV) surge immunity in secondary-side protection. |
| Capacitance (CD) | 343 pF at 0 V, 1 MHz - suitable for DC/low-speed signals (e.g., I²C, GPIO); not recommended for >10 Mbps USB or HDMI. |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - exceeds Level 4 system-level ESD requirements for industrial enclosures. |
| Package | DO-219AB (SOD-123W compatible) - 3.9 mm × 1.9 mm × 1.08 mm low-profile outline enabling dense PCB layouts and reflow compatibility. |
| AEC-Q101 Qualified | Yes - validated for automotive applications including infotainment I/O and body control module sensor interfaces. |
Pinout & Package
SMF16A-HM3-08 is housed in the DO-219AB (SMF) package: a two-terminal, cathode-marked, surface-mount plastic case measuring 3.9 mm × 1.9 mm × 1.08 mm, compatible with SOD-123W footprint and wave/reflow soldering per J-STD-020 MSL level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path | Connected to GND or low-impedance reference plane; carries full surge current during clamping. |
| Cathode | Protected line connection | Connected to signal line (e.g., USB D+); blocks reverse leakage <0.1 μA at 16 V, conducts during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| 200 W peak pulse power (10/1000 μs) | Enables robust protection against repetitive EFT bursts without thermal runaway in 12 V systems. |
| ±30 kV IEC 61000-4-2 ESD immunity | Eliminates need for external ESD staging in handheld test equipment and HMI front panels. |
| Low clamping ratio (VC/VBR ≈ 1.54) | Minimizes voltage overshoot across protected IC pins, reducing risk of oxide damage in 3.3 V/5 V logic. |
| AEC-Q101 qualified | Validated for automotive under-hood and cabin environments, supporting 15-year field life requirements. |
| MSL level 1, 260 °C reflow compatible | Allows single-pass assembly with standard lead-free reflow profiles without baking or special handling. |
Applications
| USB 2.0 Data Lines | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting D+ and D− lines of embedded USB host controllers from ESD events during cable insertion and handling. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between signal line and ground, clamping transients before they reach the PHY input stage. Use Value: Maintains signal integrity with 343 pF capacitance while delivering ±30 kV contact ESD protection - compliant with USB-IF ESD stress test requirements. | Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA loop drivers) and digital I/Os of PLC analog input modules exposed to factory floor ESD and switching noise. IC Role / Device Role / Timing Role: Standoff-clamp TVS element connected anode-to-ground, cathode-to-signal, suppressing transients up to 26 V. Use Value: Enables operation across –65 °C to +175 °C ambient, supporting extended temperature industrial deployments without derating. |
| Automotive Infotainment I/O | Medical Device Front-Panel Controls |
Use Scenario: Protecting touch controller and display interface lines (e.g., I²C, UART) in automotive head units subject to ISO 10605 and AEC-Q101 requirements. IC Role / Device Role / Timing Role: AEC-Q101-qualified unidirectional suppressor providing fail-safe clamping on low-voltage serial buses. Use Value: Delivers 16 V VRWM alignment with 12 V vehicle electrical system tolerances and passes 1000-cycle temperature cycling per AEC-Q101. | Use Scenario: Shielding tactile buttons, encoder inputs, and LED driver lines in Class II medical devices requiring IEC 60601-1-2 ESD compliance. IC Role / Device Role / Timing Role: Low-leakage (0.1 μA) transient suppressor ensuring no DC loading on battery-powered front-end circuits. Use Value: Achieves ±30 kV air discharge immunity without compromising long-term battery life due to ultra-low standby current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A-E3/57T | Higher VC (25.8 V), same VRWM (16 V), SMA package (larger footprint, 4.5 mm × 2.7 mm) | Less suitable for space-constrained USB ports; better thermal dissipation for higher-energy surges | Select when board layout allows larger package and higher 400 W peak power (8/20 μs) is required. |
| TPD2E001DRYR | Bi-directional, lower capacitance (11 pF), integrated dual-channel, 5 V VRWM, not AEC-Q101 qualified | Designed for high-speed data (USB 2.0, HDMI); lacks automotive qualification and 16 V standoff capability | Select only for non-automotive, high-frequency signal lines where sub-15 pF capacitance is mandatory. |
Compared with SMAJ16A-E3/57T and TPD2E001DRYR, SMF16A-HM3-08 offers optimal balance of compact DO-219AB size, AEC-Q101 qualification, and 16 V standoff for industrial and automotive 12 V system interfaces - whereas alternatives trade off footprint, qualification, or voltage rating.
Availability
SMF16A-HM3-08 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, industrial sensor signal conditioning, and automotive infotainment I/O requiring stable component supply, long-lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for SMF16A-HM3-08 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, sensors, and passive elements, with leadership in TVS diodes, MOSFETs, and precision resistors.
The SMF series targets high-reliability ESD protection in automotive, industrial, and computing applications, emphasizing AEC-Q101 qualification, low-profile packaging, and consistent clamping performance across temperature.
FAQ
What is the clamping voltage of the SMF16A-HM3-08 at its rated peak pulse current?
The SMF16A-HM3-08 has a maximum clamping voltage (VC) of 26 V at 7.7 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured per IEC 61000-4-5 and ensures protected circuit nodes remain within safe voltage margins relative to downstream IC absolute maximum ratings. The SMF16A-HM3-08 achieves this with low incremental surge resistance and stable avalanche behavior across its operating temperature range.
Is SMF16A-HM3-08 qualified to AEC-Q101, and what does that mean for automotive use?
Yes, SMF16A-HM3-08 is AEC-Q101 qualified, meaning it has passed stress tests including HTGB, AC/DC life test, temperature cycling, and ESD per JESD22 standards for discrete semiconductors. This qualification validates its suitability for automotive applications such as infotainment I/O, body control modules, and sensor interfaces where reliability over 15 years and extreme temperature operation (–65 °C to +175 °C) are required. The SMF16A-HM3-08 meets these requirements without derating.
What is the capacitance of SMF16A-HM3-08, and how does it affect high-speed signal lines?
The SMF16A-HM3-08 exhibits 343 pF typical junction capacitance at 0 V and 1 MHz. This value makes it appropriate for DC, low-speed, or medium-speed interfaces like I²C, GPIO, RS-485, and analog sensor outputs, but unsuitable for >10 Mbps differential signaling (e.g., USB 2.0 high-speed mode or HDMI) where sub-20 pF is typically required. Engineers must verify signal rise/fall time degradation using the SMF16A-HM3-08's RC time constant in their specific trace impedance context.
Does SMF16A-HM3-08 have polarity marking, and how is it oriented on the PCB?
Yes, SMF16A-HM3-08 uses a cathode band marking aligned with the DO-219AB package outline - visible as a dark stripe near one end of the molded body. Per Vishay's orientation diagram, the cathode terminal connects to the protected signal line (e.g., USB D+), and the anode connects to ground. The carrier tape orientation confirms cathode-first unreeled placement, and the recommended footprint includes asymmetric pad geometry to prevent misalignment during automated placement of the SMF16A-HM3-08.
What is the maximum operating temperature range for SMF16A-HM3-08, and how does it compare to standard commercial TVS diodes?
The SMF16A-HM3-08 operates from –65 °C to +175 °C, exceeding the –40 °C to +125 °C range of most commercial-grade TVS diodes. This extended range supports deployment in under-hood automotive systems, industrial motor drives, and aerospace subsystems where ambient temperatures exceed 125 °C. The wide range is enabled by high-purity silicon construction and qualified epoxy molding compound, and it applies directly to the SMF16A-HM3-08 without derating - unlike many competitors requiring voltage or current reduction above 125 °C.
SMF16A-HM3-08 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):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 7.7A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 343pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF16A-HM3-08 FAQ
1.How can I place an order for SMF16A-HM3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF16A-HM3-08 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 SMF16A-HM3-08 reliable?
The price and inventory of SMF16A-HM3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF16A-HM3-08 is usually 5 days.
3.What payment methods are accepted for SMF16A-HM3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF16A-HM3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF16A-HM3-08?
SMF16A-HM3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF16A-HM3-08 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 SMF16A-HM3-08?
For technical support, including SMF16A-HM3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF16A-HM3-08 requirements.
6.How does Aetrix verify that SMF16A-HM3-08 is sourced from the original manufacturer or authorized distributors?
All SMF16A-HM3-08 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 SMF16A-HM3-08 meets industry standards.
7.What is the process for return or replacement of SMF16A-HM3-08?
All SMF16A-HM3-08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF16A-HM3-08, 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 SMF16A-HM3-08 part is unused and in its original packaging.
Return procedure for SMF16A-HM3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF16A-HM3-08 Tags
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