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Vishay General Semiconductor - Diodes Division SMF7V5A-HE3-08
- Part No.:
- SMF7V5A-HE3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF7V5A-HE3-08.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,207
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Product details
Overview
SMF7V5A-HE3-08 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 7.5 V stand-off voltage, 12.9 V maximum clamping voltage at 15.5 A peak pulse current, 773 pF typical capacitance at 0 V, and ±30 kV IEC 61000-4-2 ESD immunity - deployed in USB 2.0, HDMI, and industrial sensor interfaces.
For engineers reviewing the SMF7V5A-HE3-08 datasheet, SMF7V5A-HE3-08 pinout, SMF7V5A-HE3-08 application, or SMF7V5A-HE3-08 equivalent, this page delivers verified electrical parameters, package dimensions, AEC-Q101 qualification status, clamping behavior under 10/1000 μs surge, and real-world use context for automotive infotainment and industrial I/O protection.
Technical Context
The SMF7V5A-HE3-08 operates as a single-channel unidirectional TVS diode with avalanche breakdown triggered above its 8.33 V minimum reverse breakdown voltage. Its low 773 pF junction capacitance and fast response time enable protection of high-frequency signal paths without signal integrity degradation.
It complies with IEC 61000-4-2 (±30 kV contact/air discharge) and AEC-Q101 (H3B-class ESD), supporting operation from –65 °C to +175 °C. Thermal resistance is 180 K/W when mounted on 3 mm × 3 mm Cu pads, enabling reliable power dissipation during repetitive transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 7.5 V - Maximum continuous reverse operating voltage before clamping begins; sets threshold for signal line compatibility. |
| Clamping Voltage (VC) | 12.9 V max at IPPM = 15.5 A (10/1000 μs) - Limits transient voltage seen by downstream ICs during surge events. |
| Junction Capacitance (CD) | 773 pF at VR = 0 V, f = 1 MHz - Low enough for USB 2.0 (480 Mbps) and RS-485 signal integrity preservation. |
| Peak Pulse Power (PPP) | 200 W (10/1000 μs) - Sustains short-duration surges common in industrial and automotive environments. |
| ESD Immunity | ±30 kV contact & air discharge per IEC 61000-4-2 - Meets highest system-level ESD robustness requirements. |
| Operating Temperature | –65 °C to +175 °C - Supports under-hood automotive and wide-temperature industrial deployments. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including HBM > 8 kV and temperature cycling. |
Pinout & Package
The SMF7V5A-HE3-08 uses the DO-219AB (SMF) package: low-profile (1.08 mm height), SOD-123W-compatible outline, cathode-bar marked, with 3.9 mm × 1.9 mm footprint and 15 mg weight. Reflow solderable per J-STD-020 MSL level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side terminal | Connected to protected signal line; conducts surge current toward cathode during overvoltage. |
| Cathode | Ground reference terminal | Connected to system ground or low-impedance return path; defines unidirectional clamping polarity. |
Key Features
| Feature | Design Value |
|---|---|
| Low incremental surge resistance | Enables tight clamping with minimal voltage overshoot during fast transients like ESD. |
| "Low Noise" fast-response technology | Sub-nanosecond response ensures clamping activation before sensitive ICs experience overstress. |
| AEC-Q101 qualification | Validates suitability for automotive applications requiring extended temperature range and reliability testing. |
| SOD-123W/SOD-123F/SOD-123FL compatibility | Enables drop-in replacement in existing layouts using industry-standard SOD-123 footprints. |
| UL 94 V-0 molding compound | Ensures flame-retardant behavior in safety-critical industrial and transportation systems. |
Applications
| USB 2.0 Interface Protection | HDMI Signal Line Protection |
|---|---|
|
Use Scenario: Protecting D+ and D− differential pairs in portable and embedded USB hosts/peripherals against ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between signal line and chassis ground to clamp transients before reaching USB transceiver. Use Value: 773 pF capacitance avoids signal rise-time degradation at 480 Mbps; 12.9 V clamping prevents damage to PHY-level circuitry. |
Use Scenario: Safeguarding TMDS clock and data channels in consumer displays and automotive infotainment head units exposed to handling ESD. IC Role / Device Role / Timing Role: Single-channel transient suppressor on each TMDS lane, referenced to local ground plane. Use Value: ±30 kV IEC 61000-4-2 rating meets IEC 61000-6-2 immunity requirements for Class B equipment; low capacitance preserves eye diagram integrity. |
| Industrial Sensor I/O Protection | Automotive LIN Bus Node Protection |
|
Use Scenario: Shielding analog and digital I/O pins of pressure, temperature, or position sensors in factory automation controllers from cable-induced surges. IC Role / Device Role / Timing Role: Standoff-clamp TVS on sensor output lines, positioned upstream of ADC input or microcontroller GPIO. Use Value: 7.5 V VRWM matches common 5 V/3.3 V sensor supply rails; 175 °C max junction temperature supports operation near motors or power stages. |
Use Scenario: Protecting LIN transceiver pins in body control modules and door modules against battery dump and ESD in 12 V vehicle networks. IC Role / Device Role / Timing Role: Unidirectional suppressor on LIN bus line (pin 1), referenced to vehicle ground. Use Value: AEC-Q101 qualification confirms compliance with automotive stress tests; 200 W peak pulse power handles load-dump energy within LIN timing constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5A-E3/57T | Higher 13.4 V clamping voltage at same 15.5 A IPPM; SMA package (larger footprint, higher thermal mass). | Less suitable for high-speed data lines due to 1000 pF capacitance; better for power rail protection. | Select SMAJ7.5A-E3/57T only when board space allows larger SMA and lower capacitance is not required. |
| TPD2E001DRYR | Two-channel, bidirectional, 12 pF capacitance; integrated ESD array with 10 kV IEC 61000-4-2 rating (lower than SMF7V5A-HE3-08). | Designed for ultra-high-speed interfaces (e.g., USB 3.0); lacks AEC-Q101 qualification and automotive temperature range. | Choose TPD2E001DRYR for compact dual-line protection where ESD level ≤10 kV suffices and AEC-Q101 is not mandated. |
Compared with SMAJ7.5A-E3/57T and TPD2E001DRYR, the SMF7V5A-HE3-08 uniquely balances automotive qualification, 773 pF low capacitance, ±30 kV ESD immunity, and DO-219AB compactness - making it optimal for space-constrained, high-reliability signal-line protection where both speed and ruggedness are critical.
Availability
SMF7V5A-HE3-08 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, industrial sensor I/O hardening, and automotive LIN bus node designs requiring stable component supply across production lifecycles.
Supply support for SMF7V5A-HE3-08 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, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SMF series targets high-speed signal line protection with optimized capacitance, clamping, and AEC-Q101 validation - engineered specifically for ESD-hardened interfaces in harsh-environment electronics.
FAQ
What is the reverse stand-off voltage of the SMF7V5A-HE3-08?
The SMF7V5A-HE3-08 has a maximum reverse stand-off voltage (VRWM) of 7.5 V, meaning it remains non-conductive up to this DC or continuous AC voltage level. This value ensures compatibility with 5 V and 3.3 V logic systems while allowing margin before clamping initiates at its 8.33 V minimum breakdown voltage. The SMF7V5A-HE3-08 maintains low leakage (<0.1 µA) at VRWM, preserving signal integrity in always-on interfaces.
Is the SMF7V5A-HE3-08 qualified for automotive applications?
Yes, the SMF7V5A-HE3-08 is AEC-Q101 qualified, having passed stress tests including human body model ESD > 8 kV, temperature cycling, and high-temperature operating life. Its –65 °C to +175 °C operating range and UL 94 V-0 molding compound meet automotive under-hood and module-level requirements. The SMF7V5A-HE3-08 is explicitly listed in Vishay's AEC-Q101 qualified product matrix for ESD protection diodes.
What is the clamping voltage of the SMF7V5A-HE3-08 under surge conditions?
The SMF7V5A-HE3-08 exhibits a maximum reverse clamping voltage (VC) of 12.9 V when subjected to a 15.5 A peak pulse current with a 10/1000 μs waveform. This clamping level protects downstream ICs rated for absolute maximum voltages up to 13.2 V or higher. The SMF7V5A-HE3-08 achieves this with low incremental resistance, minimizing voltage overshoot during fast-rising ESD events.
Does the SMF7V5A-HE3-08 support automated PCB assembly?
Yes, the SMF7V5A-HE3-08 is fully compatible with wave and reflow soldering processes, conforming to J-STD-020 MSL level 1 with a peak reflow temperature of 260 °C. Its DO-219AB (SMF) package has standardized orientation in carrier tape and a footprint matching SOD-123W/F/FL variants, enabling seamless integration into high-volume SMT lines without process modification. The SMF7V5A-HE3-08 is supplied on 7" or 13" reels with 3K or 10K quantities.
How does the capacitance of the SMF7V5A-HE3-08 affect high-speed signal performance?
The SMF7V5A-HE3-08 has a typical junction capacitance of 773 pF at 0 V bias and 1 MHz, which is optimized for sub-500 Mbps interfaces like USB 2.0 and RS-485. This value introduces negligible rise-time degradation (<5%) on 50 Ω lines while maintaining effective ESD clamping. For higher-speed protocols (e.g., USB 3.0), lower-capacitance alternatives are recommended - but the SMF7V5A-HE3-08 remains ideal where robustness and cost-efficiency outweigh ultra-low-C requirements.
SMF7V5A-HE3-08 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):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 15.5A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 773pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF7V5A-HE3-08 FAQ
1.How can I place an order for SMF7V5A-HE3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF7V5A-HE3-08 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 SMF7V5A-HE3-08 reliable?
The price and inventory of SMF7V5A-HE3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF7V5A-HE3-08 is usually 5 days.
3.What payment methods are accepted for SMF7V5A-HE3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF7V5A-HE3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF7V5A-HE3-08?
SMF7V5A-HE3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF7V5A-HE3-08 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 SMF7V5A-HE3-08?
For technical support, including SMF7V5A-HE3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF7V5A-HE3-08 requirements.
6.How does Aetrix verify that SMF7V5A-HE3-08 is sourced from the original manufacturer or authorized distributors?
All SMF7V5A-HE3-08 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 SMF7V5A-HE3-08 meets industry standards.
7.What is the process for return or replacement of SMF7V5A-HE3-08?
All SMF7V5A-HE3-08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF7V5A-HE3-08, 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 SMF7V5A-HE3-08 part is unused and in its original packaging.
Return procedure for SMF7V5A-HE3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF7V5A-HE3-08 Tags
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