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Vishay General Semiconductor - Diodes Division SMF7V5A-E3-08
- Part No.:
- SMF7V5A-E3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF7V5A-E3-08.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC SMF
- Quantity:
- Payment:
- Shipping:
Inventory:29,956
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Product details
Overview
SMF7V5A-E3-08 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in the SMF (DO-219AB) package, designed for low-capacitance transient suppression in high-speed data lines. It features a 7.5 V stand-off voltage, 8.33–9.3 V reverse breakdown range at 1 mA, 15.5 A peak pulse current (10/1000 μs), 12.9 V maximum clamping voltage at IPPM, and 773 pF typical junction capacitance at 0 V / 1 MHz - deployed in USB 2.0, HDMI, and automotive infotainment interfaces.
For engineers reviewing the SMF7V5A-E3-08 datasheet, SMF7V5A-E3-08 pinout, SMF7V5A-E3-08 application, or SMF7V5A-E3-08 equivalent, key selection criteria include clamping voltage margin vs. IC I/O rail tolerance, 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 technology to clamp transients above its breakdown threshold while maintaining low leakage (< 0.1 µA at VRWM = 7.5 V). Its low incremental surge resistance ensures rapid energy dissipation during ESD events per IEC 61000-4-2 (±30 kV contact/air discharge) and IEC 61000-4-5 (1000 W, 8/20 μs).
The SMF7V5A-E3-08 integrates "Low Noise" fast-response design with sub-nanosecond turn-on time, enabling protection of sensitive 5 V and 3.3 V logic interfaces without signal distortion. It is rated for continuous operation from –65 °C to +175 °C and qualified to AEC-Q101 for automotive under-hood and infotainment applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 7.5 V - maximum continuous reverse voltage before significant leakage; sets upper limit for protected line operating voltage. |
| Breakdown Voltage (VBR) | 8.33–9.3 V at 1 mA - defines reliable conduction onset during overvoltage; tight tolerance enables precise system-level margining. |
| Clamping Voltage (VC) | 12.9 V max at 15.5 A - peak voltage seen by downstream IC during worst-case transient; must stay below absolute max I/O rating. |
| Junction Capacitance (CD) | 773 pF at 0 V, 1 MHz - directly impacts high-frequency signal attenuation; suitable for ≤480 Mbps USB 2.0 but not USB 3.0. |
| ESD Rating | ±30 kV contact / ±30 kV air (IEC 61000-4-2) - exceeds Level 4 immunity requirements for consumer and automotive end-equipment. |
| Package | DO-219AB (SOD-123W-compatible) - 3.9 × 1.9 × 1.08 mm low-profile outline optimized for wave/reflow soldering and space-constrained PCB layouts. |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including HBM >8 kV, enabling use in ADAS camera links and infotainment displays. |
Pinout & Package
SMF7V5A-E3-08 uses the DO-219AB (SOD-123W-compatible) surface-mount package: cathode-bar marked, single-anode/single-cathode configuration, 2-terminal unidirectional structure. Dimensions: 3.9 mm length × 1.9 mm width × 1.08 mm height; recommended footprint per Vishay spec S8-V-3915.01-001.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Transient current sink path | Connected to protected signal line; conducts surge current to ground when clamping threshold exceeded. |
| Cathode (Pin 2) | Reference node / ground return | Must be tied to low-impedance system ground plane; determines polarity and directionality of protection. |
Key Features
| Feature | Design Value |
|---|---|
| 200 W Peak Pulse Power (10/1000 μs) | Supports robust multi-pulse ESD stress without degradation; sufficient for repeated human-body model discharges in handheld devices. |
| Low Incremental Surge Resistance | Enables tighter clamping voltage control and reduced overshoot during fast transients - critical for protecting 3.3 V/5 V microcontroller I/O pins. |
| "Low Noise" Fast Response | Sub-nanosecond turn-on minimizes voltage excursion before clamping engages - preserves signal fidelity in high-speed serial interfaces. |
| AEC-Q101 Qualified | Validated for automotive temperature cycling, mechanical shock, and humidity testing - required for front-end protection in vehicle display modules. |
| SOD-123W Footprint Compatibility | Enables drop-in replacement or layout reuse with legacy SOD-123F/SOD-123FL designs - reduces redesign effort and NRE cost. |
Applications
| USB 2.0 Data Lines | HDMI DDC Channel |
|---|---|
Use Scenario: Protecting differential USB 2.0 D+/D− traces from ESD events during cable insertion or handling in portable electronics. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed between connector and USB PHY, referenced to system ground. Use Value: 773 pF capacitance avoids signal rise-time degradation at 480 Mbps; 12.9 V clamping stays safely below 16 V absolute max rating of common USB transceivers. | Use Scenario: Safeguarding HDMI Display Data Channel (DDC) I²C bus lines (SCL/SDA) against electrostatic discharge in home theater receivers and monitors. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional diode pair (one per line) with ground-referenced clamping. Use Value: 7.5 V VRWM aligns with 5 V I²C pull-up supply; ±30 kV ESD rating exceeds IEC 61000-4-2 Level 4, ensuring compliance in retail-display environments. |
| Automotive Infotainment Display | Industrial Touchscreen Interface |
Use Scenario: Shielding LVDS or RGB parallel video interface lines in automotive center-stack displays exposed to cabin ESD sources. IC Role / Device Role / Timing Role: Per-line unidirectional TVS diode mounted adjacent to display connector, grounded to chassis via short trace. Use Value: AEC-Q101 qualification guarantees operation across –40 °C to +125 °C ambient; 175 °C junction rating supports under-dash thermal environments. | Use Scenario: Protecting resistive or capacitive touchscreen controller I/O pins (X+, X−, Y+, Y−) in factory HMIs subject to operator ESD. IC Role / Device Role / Timing Role: Low-leakage (0.1 µA max) clamping diode placed at front-panel connector to prevent false touches or controller latch-up. Use Value: 12.9 V VC limits transient overvoltage below 15 V controller ABS MAX rating; DO-219AB package withstands industrial reflow profiles up to 260 °C. |
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 clamping voltage (13.4 V), larger SMA (DO-214AC) package (4.5 × 2.7 × 2.2 mm), 500 W peak power (8/20 μs) | Better suited for higher-energy surges (e.g., lightning-induced); less suitable for high-density USB/HDMI layouts due to size | Select when system-level surge immunity requires >200 W capability and board space permits larger footprint. |
| TPD2E001DRSR | 2-channel, 15 pF ultra-low capacitance, integrated ESD array; 3.6 V VRWM; not AEC-Q101 qualified | Optimized for USB 3.0/MIPI; lacks automotive qualification and higher-voltage clamping headroom | Prefer for high-speed digital interfaces where <20 pF capacitance is mandatory and automotive qualification is not required. |
Compared with SMAJ7.5A-E3/57T and TPD2E001DRSR, the SMF7V5A-E3-08 delivers optimal balance of compact DO-219AB packaging, automotive qualification, and 773 pF capacitance - making it ideal for space-constrained, high-reliability 5 V interface protection where moderate bandwidth suffices.
Availability
SMF7V5A-E3-08 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive infotainment displays, and industrial touchscreen controllers requiring stable component supply and long-term lifecycle support.
Supply support for SMF7V5A-E3-08 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 power management, signal conditioning, and circuit protection technologies.
The SMF series belongs to Vishay's eSMP® family of surface-mount TVS diodes, engineered specifically for high-reliability ESD and surge protection in automotive, industrial, and consumer electronics where small footprint and AEC-Q101 compliance are essential.
FAQ
What is the maximum clamping voltage of the SMF7V5A-E3-08 under peak pulse conditions?
The SMF7V5A-E3-08 has a maximum reverse clamping voltage (VC) of 12.9 V at its rated peak pulse current of 15.5 A (10/1000 μs waveform). This value is guaranteed across temperature and represents the highest voltage the protected line will experience during a worst-case transient event. The SMF7V5A-E3-08 maintains this clamping performance while delivering 200 W peak pulse power, ensuring downstream ICs remain within safe operating limits.
Is the SMF7V5A-E3-08 qualified for automotive applications?
Yes, the SMF7V5A-E3-08 is AEC-Q101 qualified, having passed rigorous stress tests including temperature cycling, mechanical shock, and humidity exposure. It supports operating temperatures from –65 °C to +175 °C and is rated for human body model ESD >8 kV. The SMF7V5A-E3-08 is approved for use in automotive infotainment, ADAS camera links, and instrument cluster interfaces where reliability under harsh environmental conditions is mandatory.
What is the junction capacitance of the SMF7V5A-E3-08 and how does it affect signal integrity?
The SMF7V5A-E3-08 exhibits 773 pF typical junction capacitance at 0 V and 1 MHz. This value directly influences high-frequency signal attenuation and rise-time degradation - making it well-suited for USB 2.0 (480 Mbps) and I²C (up to 1 MHz), but unsuitable for USB 3.0 or PCIe. The SMF7V5A-E3-08's capacitance is measured under standardized conditions and remains stable across bias, supporting predictable layout modeling in signal-integrity simulations.
Does the SMF7V5A-E3-08 have polarity markings, and how is it oriented on the PCB?
Yes, the SMF7V5A-E3-08 features a cathode bar marking on the package body, aligned with Pin 2 (cathode terminal). Per Vishay's orientation diagram (Doc. S8-V-3717.02-003), the cathode must be routed to system ground, and the anode (Pin 1) connects to the protected signal line. Correct orientation is critical: reverse placement renders the device non-functional for unidirectional protection. The SMF7V5A-E3-08's DO-219AB footprint follows standard SOD-123W tape-and-reel carrier orientation for automated placement.
What are the soldering requirements for the SMF7V5A-E3-08?
The SMF7V5A-E3-08 is qualified for both wave and reflow soldering, with peak reflow temperature rated at 260 °C (per J-STD-020 MSL level 1). Its DO-219AB package uses tin-plated terminations and complies with RoHS and lead-free standards. Recommended pad layout follows Vishay's footprint spec S8-V-3915.01-001, including 1.3 mm × 1.3 mm solder pads and 2.9 mm center-to-center spacing. The SMF7V5A-E3-08's thermal resistance (RthJA = 180 K/W on 3 mm × 3 mm Cu pads) supports reliable thermal dissipation during surge events.
SMF7V5A-E3-08 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:
- General Purpose
- Capacitance @ Frequency:
- 773pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF7V5A-E3-08 FAQ
1.How can I place an order for SMF7V5A-E3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF7V5A-E3-08 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-E3-08 reliable?
The price and inventory of SMF7V5A-E3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF7V5A-E3-08 is usually 5 days.
3.What payment methods are accepted for SMF7V5A-E3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF7V5A-E3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF7V5A-E3-08?
SMF7V5A-E3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF7V5A-E3-08 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-E3-08?
For technical support, including SMF7V5A-E3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF7V5A-E3-08 requirements.
6.How does Aetrix verify that SMF7V5A-E3-08 is sourced from the original manufacturer or authorized distributors?
All SMF7V5A-E3-08 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-E3-08 meets industry standards.
7.What is the process for return or replacement of SMF7V5A-E3-08?
All SMF7V5A-E3-08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF7V5A-E3-08, 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-E3-08 part is unused and in its original packaging.
Return procedure for SMF7V5A-E3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF7V5A-E3-08 Tags
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