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Vishay General Semiconductor - Diodes Division SMF7V0A-M3-18
- Part No.:
- SMF7V0A-M3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF7V0A-M3-18.pdf
- Description:
- TVS DIODE 7VWM 12VC SMF
- Quantity:
- Payment:
- Shipping:
Inventory:8,547
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Product details
Overview
SMF7V0A-M3-18 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in the SMF (DO-219AB) package, designed for low-capacitance transient voltage suppression on high-speed data lines. It features a 7.0 V stand-off voltage (VRWM), 7.78–8.6 V reverse breakdown (VBR), 16.7 A peak pulse current (IPPM), 12 V maximum clamping voltage (VC) at IPPM, and 843 pF typical junction capacitance at 0 V - optimized for USB 2.0, HDMI, and industrial sensor interfaces.
For engineers reviewing the SMF7V0A-M3-18 datasheet, SMF7V0A-M3-18 pinout, SMF7V0A-M3-18 application, or SMF7V0A-M3-18 equivalent, key selection criteria include clamping performance under IEC 61000-4-2 ±30 kV contact/air discharge, AEC-Q101 qualification status, SOD-123W-compatible footprint, and low incremental surge resistance for robust signal integrity preservation.
Technical Context
This device operates as a single-channel unidirectional TVS diode with cathode-anode polarity, leveraging silicon avalanche technology to clamp transients within nanoseconds. Its 1.08 mm height and 3.9 × 1.9 mm footprint enable dense PCB layouts while maintaining thermal resistance of 180 K/W on standard epoxy-glass substrates.
The SMF7V0A-M3-18 delivers 200 W peak pulse power (10/1000 μs) and 1000 W (8/20 μs per IEC 61000-4-5), with ESD immunity exceeding ±30 kV contact/air per IEC 61000-4-2 and H3B-class human body model rating (>8 kV). It supports reflow and wave soldering per J-STD-020 MSL level 1 conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 7.0 V - maximum continuous reverse operating voltage before leakage exceeds 3 µA; defines safe signal swing margin for 5 V logic rails. |
| Reverse Breakdown (VBR) | 7.78–8.6 V at 10 mA - guaranteed avalanche initiation range; ensures predictable turn-on during fast transients. |
| Clamping Voltage (VC) | 12.0 V max at 16.7 A (10/1000 µs) - limits downstream IC stress during surge events; critical for protecting 12 V-tolerant receivers. |
| Junction Capacitance (CD) | 843 pF at 0 V, 1 MHz - low enough for USB 2.0 (480 Mbps) and CAN FD signal integrity; measured with zero-bias condition. |
| Peak Pulse Power (PPP) | 200 W (10/1000 µs), 1000 W (8/20 µs) - sustains high-energy surges without degradation; validated per IEC 61000-4-5 waveform standards. |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - exceeds automotive and industrial ESD immunity requirements for exposed ports. |
| Operating Temp Range | −65 °C to +175 °C - supports under-hood, industrial control, and aerospace environments without derating. |
Pinout & Package
SMF7V0A-M3-18 uses the DO-219AB (SMF) package: 3.9 mm × 1.9 mm × 1.08 mm, low-profile, molded in UL 94 V-0 compound, with cathode marked by a bar on the top surface. Compatible with SOD-123W, SOD-123F, and SOD-123FL footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Signal Line Connection | Connected to protected line (e.g., USB D+); conducts during positive transients when cathode is biased higher. |
| Cathode | Ground Reference Terminal | Connected to system ground or low-impedance return path; provides clamping reference and ESD current sink. |
Key Features
| Feature | Design Value |
|---|---|
| Low-Noise Fast Response | Sub-nanosecond response time enables clamping before sensitive ICs experience overvoltage - verified via IEC 61000-4-2 waveform analysis. |
| AEC-Q101 Qualified | Qualified per AEC-Q101 Rev D for automotive applications; includes H3B-class HBM (>8 kV) and full temperature cycling validation. |
| Reflow/Wave Solderable | Rated for peak reflow temperatures up to 260 °C (J-STD-020 MSL level 1); no pre-baking required for standard assembly processes. |
| Low Incremental Surge Resistance | Minimizes voltage overshoot during high-di/dt events - contributes directly to the 12 V VC specification at 16.7 A. |
| RoHS & Lead-Free | Tin-plated terminations compliant with RoHS Directive 2011/65/EU and JEDEC J-STD-609 Class 2 moisture sensitivity. |
Applications
| USB 2.0 Interface Protection | HDMI Data Lane Protection |
|---|---|
|
Use Scenario: Protecting USB 2.0 D+/D− lines against ESD events from hot-plug connectors and user handling in portable medical devices. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between signal line and chassis ground, clamping transients before reaching USB transceiver ICs. Use Value: 843 pF capacitance avoids signal rise-time degradation; ±30 kV ESD rating ensures compliance with IEC 61000-4-2 Level 4 testing. |
Use Scenario: Safeguarding HDMI TMDS channels in set-top boxes against electrostatic discharge during cable insertion and field service. IC Role / Device Role / Timing Role: Standoff-clamp TVS on each differential pair, referenced to digital ground, preserving 1.65 V common-mode and 100 Ω impedance. Use Value: 12 V clamping voltage prevents damage to HDMI receiver inputs rated for ≤1.8 V absolute max, while 7.0 V VRWM avoids DC loading. |
| Automotive Sensor Signal Lines | Industrial RS-485 Transceivers |
|
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) in engine control units from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary ESD suppressor on low-speed analog lines, mounted adjacent to connector entry point. Use Value: −65 °C to +175 °C operating range matches under-hood thermal profiles; AEC-Q101 qualification confirms reliability for 15-year vehicle life. |
Use Scenario: Protecting RS-485 transceiver A/B terminals in factory automation gateways exposed to long cable runs and ground potential differences. IC Role / Device Role / Timing Role: Bidirectional protection implemented using two SMF7V0A-M3-18 diodes (anode-to-line, cathode-to-ground) per line. Use Value: 200 W (10/1000 µs) pulse rating handles repetitive surges from inductive switching; 180 K/W RthJA enables stable operation without heatsinking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.0A-E3/57T | Higher clamping voltage (12.4 V), larger SMA package (4.5 × 2.7 mm), 1000 W PPP (8/20 µs) but only 100 W (10/1000 µs). | Less suitable for high-speed data due to 1000 pF capacitance; better for power rail protection where size is less constrained. | Select SMAJ7.0A-E3/57T only when board space allows larger footprint and signal bandwidth < 100 Mbps. |
| TPD2E007DRYR | Two-channel, 7 V bi-directional array; 15 pF capacitance; integrated ESD protection for USB/DisplayPort; not AEC-Q101 qualified. | Designed for ultra-high-speed interfaces (USB 3.0, DP 1.2); lacks automotive qualification and standalone surge rating. | Choose TPD2E007DRYR for compact dual-lane protection in consumer electronics; avoid for automotive or industrial surge-critical designs. |
Compared with SMAJ7.0A-E3/57T and TPD2E007DRYR, SMF7V0A-M3-18 uniquely balances low capacitance (843 pF), AEC-Q101 qualification, and 200 W 10/1000 µs surge capability in a 3.9 mm × 1.9 mm footprint - making it optimal for cost-sensitive, space-constrained automotive and industrial data line protection.
Availability
SMF7V0A-M3-18 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive sensor signal conditioning, and industrial RS-485 transceiver safeguarding requiring stable component supply across multi-year production cycles.
Supply support for SMF7V0A-M3-18 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 and passive components, specializing in high-reliability, application-optimized solutions for automotive, industrial, and computing markets.
The SMF series targets high-speed data line ESD protection with emphasis on low capacitance, AEC-Q101 qualification, and compatibility with modern SMT assembly - addressing design needs in automotive infotainment, industrial IoT, and medical connectivity.
FAQ
What is the clamping voltage of the SMF7V0A-M3-18 at its rated peak pulse current?
The SMF7V0A-M3-18 has a maximum clamping voltage (VC) of 12.0 V when subjected to its rated 16.7 A peak pulse current (IPPM) under the 10/1000 µs waveform. This value is measured per IEC 61000-4-5 test conditions and guarantees that downstream circuitry sees no more than 12 V during surge events - critical for protecting 12 V-tolerant receivers. The SMF7V0A-M3-18 achieves this with low incremental surge resistance and fast avalanche response.
Is the SMF7V0A-M3-18 qualified to AEC-Q101 for automotive use?
Yes, the SMF7V0A-M3-18 is AEC-Q101 qualified per Rev D, including full H3B-class human body model testing (>8 kV), temperature cycling, and high-temperature operating life validation. This qualification confirms suitability for automotive applications such as infotainment interfaces, body control modules, and sensor signal conditioning where reliability across extended temperature ranges (−65 °C to +175 °C) is mandatory. The SMF7V0A-M3-18 meets these requirements without derating.
What is the junction capacitance of the SMF7V0A-M3-18 and how does it affect high-speed signal integrity?
The SMF7V0A-M3-18 exhibits 843 pF typical junction capacitance at 0 V and 1 MHz, measured under zero-bias conditions. This value is low enough to preserve signal integrity on USB 2.0 (480 Mbps) and HDMI 1.4 (up to 3.4 Gbps) data lanes without excessive rise-time degradation or insertion loss. The capacitance decreases with increasing reverse bias - e.g., dropping below 300 pF at 5 V VR - enabling effective use on 5 V logic rails. The SMF7V0A-M3-18's capacitance profile is documented in Vishay's Fig. 12.
Can the SMF7V0A-M3-18 be used for bidirectional ESD protection?
No, the SMF7V0A-M3-18 is a unidirectional TVS diode intended for single-polarity clamping - anode to signal line, cathode to ground. For true bidirectional protection (e.g., on AC-coupled or differential lines like RS-485), two SMF7V0A-M3-18 devices must be used in opposing configuration: one anode-to-line/cathode-to-ground, the other cathode-to-line/anode-to-ground. This arrangement replicates symmetrical clamping behavior while retaining the SMF7V0A-M3-18's specified electrical parameters.
What is the package type and soldering compatibility of the SMF7V0A-M3-18?
The SMF7V0A-M3-18 uses the DO-219AB (SMF) package: 3.9 mm × 1.9 mm × 1.08 mm, with cathode indicated by a bar marking. It is fully compatible with standard reflow soldering (peak 260 °C, J-STD-020 MSL level 1) and wave soldering processes. The package is also mechanically and thermally compatible with SOD-123W, SOD-123F, and SOD-123FL footprints - allowing drop-in replacement in existing layouts. The SMF7V0A-M3-18 requires no pre-baking prior to reflow.
SMF7V0A-M3-18 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:
- General Purpose
- Capacitance @ Frequency:
- 843pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF7V0A-M3-18 FAQ
1.How can I place an order for SMF7V0A-M3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF7V0A-M3-18 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-M3-18 reliable?
The price and inventory of SMF7V0A-M3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF7V0A-M3-18 is usually 5 days.
3.What payment methods are accepted for SMF7V0A-M3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF7V0A-M3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF7V0A-M3-18?
SMF7V0A-M3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF7V0A-M3-18 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-M3-18?
For technical support, including SMF7V0A-M3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF7V0A-M3-18 requirements.
6.How does Aetrix verify that SMF7V0A-M3-18 is sourced from the original manufacturer or authorized distributors?
All SMF7V0A-M3-18 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-M3-18 meets industry standards.
7.What is the process for return or replacement of SMF7V0A-M3-18?
All SMF7V0A-M3-18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF7V0A-M3-18, 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-M3-18 part is unused and in its original packaging.
Return procedure for SMF7V0A-M3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF7V0A-M3-18 Tags
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