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Vishay General Semiconductor - Diodes Division SMF7V0A-HM3-08
- Part No.:
- SMF7V0A-HM3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF7V0A-HM3-08.pdf
- Description:
- TVS DIODE 7VWM 12VC SMF
- Quantity:
- Payment:
- Shipping:
Inventory:4,785
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Product details
Overview
SMF7V0A-HM3-08 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 7.0 V standoff voltage (VRWM), 12.0 V maximum clamping voltage at 16.7 A peak pulse current, and 843 pF typical junction capacitance at 0 V - enabling robust protection without signal integrity degradation in USB 2.0, HDMI, and industrial I/O interfaces.
For engineers reviewing the SMF7V0A-HM3-08 datasheet, SMF7V0A-HM3-08 pinout, SMF7V0A-HM3-08 application, or SMF7V0A-HM3-08 equivalent, this device is evaluated for IEC 61000-4-2 ±30 kV contact/air discharge, AEC-Q101 H3B ESD qualification, and 200 W peak pulse power handling with 10/1000 μs waveform - critical for automotive infotainment, industrial sensor nodes, and portable medical equipment.
Technical Context
This diode operates as a unidirectional TVS clamp with avalanche breakdown behavior, triggered when reverse voltage exceeds its 7.78–8.6 V breakdown range (VBR) at 10 mA test current. Its low 0.3 μA max reverse leakage at VRWM ensures minimal standby power loss in battery-powered systems.
The device uses silicon planar technology with "Low Noise" fast-response design, achieving sub-nanosecond turn-on time to suppress ESD transients before downstream IC damage occurs. Its SOD-123W-compatible DO-219AB package supports wave and reflow soldering per J-STD-020 MSL level 1 conditions up to 260 °C peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRWM) | 7.0 V - defines maximum continuous operating voltage before clamping begins; matches 5 V logic rails with margin for ripple and tolerance. |
| Breakdown Voltage (VBR) | 7.78–8.6 V at 10 mA - ensures reliable triggering above system operating voltage while avoiding false trips during normal operation. |
| Clamping Voltage (VC) | 12.0 V at 16.7 A IPPM - limits transient voltage seen by protected ICs to safe levels compatible with 12 V tolerant I/O structures. |
| Junction Capacitance (CD) | 843 pF at 0 V, 1 MHz - low enough for USB 2.0 (480 Mbps) and RS-485 links without measurable signal rise-time degradation. |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - exceeds Level 4 immunity requirements for consumer and industrial end-equipment. |
| Peak Pulse Power | 200 W (10/1000 μs) - sustains single-event surges common in handheld device drop testing and board-level ESD events. |
| Operating Temperature | −65 °C to +175 °C - supports under-hood automotive, industrial control, and aerospace environments without derating. |
Pinout & Package
SMF7V0A-HM3-08 is housed in the DO-219AB (SMF) package - a low-profile, surface-mount case with cathode marking bar, 3.9 mm × 1.9 mm footprint, and 1.08 mm max height. Compatible with SOD-123W layout patterns and IPC-7351B footprint recommendations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input side of protection path | Connected to protected line (e.g., USB D+); conducts surge current toward ground during overvoltage events. |
| Cathode | Output side / reference node | Connected to system ground; establishes clamping reference and enables unidirectional conduction from line to GND. |
Key Features
| Feature | Design Value |
|---|---|
| IEC 61000-4-2 ESD immunity | ±30 kV contact and air discharge - eliminates need for external spark gaps or multi-stage protection in Class B/C equipment. |
| AEC-Q101 qualification | H3B human body model (>8 kV) - validated for automotive infotainment, ADAS camera links, and body control modules. |
| Low incremental surge resistance | Enables tight clamping with minimal voltage overshoot - critical for protecting 3.3 V and 5 V microcontroller GPIOs. |
| Reflow/wave solder compatible | MSL level 1 rating with 260 °C peak temperature tolerance - supports high-volume automated assembly without moisture-related defects. |
| UL 94 V-0 molding compound | Self-extinguishing encapsulation - meets flame-retardancy requirements for industrial and medical enclosures. |
Applications
| USB 2.0 Interface Protection | HDMI Data Line Protection |
|---|---|
Use Scenario: Protecting USB 2.0 D+/D− lines against ESD events during cable insertion or handling in portable devices. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between data line and ground to clamp transients before reaching USB transceiver. Use Value: 843 pF capacitance avoids signal integrity loss at 480 Mbps; 12.0 V clamping prevents damage to 3.3 V tolerant PHY inputs. |
Use Scenario: Safeguarding HDMI TMDS channels from electrostatic discharge in set-top boxes and display controllers. IC Role / Device Role / Timing Role: Low-capacitance ESD suppressor installed inline with differential pairs to maintain impedance matching. Use Value: Sub-1 ns response time captures ESD pulses before they propagate; DO-219AB package fits tight pitch layouts near HDMI connectors. |
| Automotive Sensor I/O Protection | Industrial RS-485 Transceiver Protection |
Use Scenario: Shielding LIN or CAN FD sensor nodes from ESD in vehicle cabin environments where users interact with controls. IC Role / Device Role / Timing Role: Standoff-rated TVS on bidirectional signal lines, referenced to chassis ground. Use Value: −65 °C to +175 °C operating range supports under-dash mounting; AEC-Q101 qualification confirms reliability across thermal cycles. |
Use Scenario: Adding secondary ESD protection to RS-485 transceivers in factory automation PLCs exposed to maintenance personnel contact. IC Role / Device Role / Timing Role: Parallel-connected unidirectional clamp on A/B bus lines to shunt transients to local ground plane. Use Value: 200 W pulse rating handles multiple ESD strikes; 0.3 μA leakage preserves bus bias stability over long cable runs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.0A | Higher 10.5 V clamping voltage at same IPPM; SMA package (DO-214AC) with larger 4.5 mm × 2.7 mm footprint. | Less suitable for space-constrained USB/HDMI designs; better for higher-power industrial I/O where layout area permits. | Select SMAJ7.0A only if board real estate allows larger package and system can tolerate 10.5 V clamping. |
| TPD2E001DRYR | 2-channel array in SOT-563; 12 pF capacitance but lower 150 W pulse rating and no AEC-Q101 qualification. | Optimized for ultra-high-speed digital interfaces (e.g., MIPI) where capacitance is paramount; not rated for automotive use. | Choose TPD2E001DRYR for mobile phone camera modules; avoid in automotive or industrial settings requiring AEC-Q101 compliance. |
Compared with SMAJ7.0A and TPD2E001DRYR, SMF7V0A-HM3-08 uniquely balances automotive-grade reliability (AEC-Q101), compact DO-219AB packaging, and 843 pF capacitance - making it optimal for cost-sensitive, space-limited ESD protection in automotive infotainment and industrial edge sensors where both robustness and signal fidelity matter.
Availability
SMF7V0A-HM3-08 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive sensor I/O hardening, and industrial RS-485 transceiver safeguarding requiring stable component supply across production lifecycles.
Supply support for SMF7V0A-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 Semiconductors is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The SMF series targets high-speed data line protection with optimized capacitance-clamping trade-offs, developed specifically for ESD-hardened interfaces in automotive infotainment, industrial IoT nodes, and portable medical devices.
FAQ
What is the clamping voltage of SMF7V0A-HM3-08 at its rated peak pulse current?
The SMF7V0A-HM3-08 has a maximum clamping voltage (VC) of 12.0 V at 16.7 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured under standardized surge conditions and ensures downstream ICs see no more than 12.0 V during an ESD event - critical for protecting 3.3 V and 5 V logic interfaces. The SMF7V0A-HM3-08 achieves this with low incremental surge resistance and fast avalanche response.
Is SMF7V0A-HM3-08 qualified for automotive applications?
Yes, SMF7V0A-HM3-08 is AEC-Q101 qualified with H3B-class ESD immunity (>8 kV HBM), making it suitable for automotive applications including infotainment systems, body control modules, and sensor interfaces. Its −65 °C to +175 °C operating temperature range and DO-219AB package's mechanical robustness further support under-hood and cabin deployment. The SMF7V0A-HM3-08 meets these requirements without derating.
What is the junction capacitance of SMF7V0A-HM3-08 and how does it affect high-speed signals?
The SMF7V0A-HM3-08 exhibits 843 pF typical junction capacitance at 0 V and 1 MHz, verified per Vishay's characterization data. This value is low enough to avoid significant rise-time degradation on USB 2.0 (480 Mbps) and RS-485 links, while still delivering strong ESD clamping. For higher-speed interfaces like HDMI or MIPI, lower-capacitance alternatives may be preferred - but the SMF7V0A-HM3-08 remains optimal where ESD robustness and layout density are prioritized over multi-Gbps signaling.
Can SMF7V0A-HM3-08 replace SMF7V0A-E3-08 in existing designs?
Yes, SMF7V0A-HM3-08 and SMF7V0A-E3-08 share identical electrical specifications, DO-219AB package dimensions, and AEC-Q101 qualification status. The HM3 suffix denotes Vishay's halogen-free, lead-free, RoHS-compliant termination with matte tin plating - fully compatible with standard reflow profiles. No PCB changes or layout modifications are required when substituting SMF7V0A-HM3-08 for SMF7V0A-E3-08 in production.
What is the maximum continuous reverse voltage SMF7V0A-HM3-08 can withstand?
The SMF7V0A-HM3-08 has a maximum standoff voltage (VRWM) of 7.0 V, meaning it blocks up to 7.0 V continuously in reverse bias without entering breakdown. This rating provides sufficient margin above 5 V logic rails while ensuring reliable operation under typical supply ripple and tolerance variations. Reverse leakage remains below 3 μA at this voltage, minimizing power loss in always-on circuits - a key design parameter confirmed in the SMF7V0A-HM3-08 datasheet.
SMF7V0A-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):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 16.7A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 843pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF7V0A-HM3-08 FAQ
1.How can I place an order for SMF7V0A-HM3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF7V0A-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 SMF7V0A-HM3-08 reliable?
The price and inventory of SMF7V0A-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 SMF7V0A-HM3-08 is usually 5 days.
3.What payment methods are accepted for SMF7V0A-HM3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF7V0A-HM3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF7V0A-HM3-08?
SMF7V0A-HM3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF7V0A-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 SMF7V0A-HM3-08?
For technical support, including SMF7V0A-HM3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF7V0A-HM3-08 requirements.
6.How does Aetrix verify that SMF7V0A-HM3-08 is sourced from the original manufacturer or authorized distributors?
All SMF7V0A-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 SMF7V0A-HM3-08 meets industry standards.
7.What is the process for return or replacement of SMF7V0A-HM3-08?
All SMF7V0A-HM3-08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF7V0A-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 SMF7V0A-HM3-08 part is unused and in its original packaging.
Return procedure for SMF7V0A-HM3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF7V0A-HM3-08 Tags
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