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Vishay General Semiconductor - Diodes Division SMF7V5A-M3-18
- Part No.:
- SMF7V5A-M3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF7V5A-M3-18.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC SMF
- Quantity:
- Payment:
- Shipping:
Inventory:2,629
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Product details
Overview
SMF7V5A-M3-18 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 (VRWM), 8.33–9.3 V reverse breakdown range (VBR), 12.9 V maximum clamping voltage at 15.5 A peak pulse current (VC), 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-M3-18 datasheet, SMF7V5A-M3-18 pinout, SMF7V5A-M3-18 application, or SMF7V5A-M3-18 equivalent, this page delivers verified electrical specs, package dimensions, real-world clamping behavior, thermal limits, and qualified AEC-Q101 alternatives - all aligned to Vishay's Rev. 2.4 (04-Jul-2023) specification for production-grade ESD hardening.
Technical Context
This diode operates as a unidirectional avalanche clamp with cathode-anode polarity, optimized for fast response (<1 ns rise time per IEC 61000-4-2) and low incremental surge resistance. Its DO-219AB package enables wave/reflow soldering and supports MSL level 1 handling with 180 K/W junction-to-ambient thermal resistance on standard 3 mm × 3 mm Cu pads.
The device meets AEC-Q101 stress requirements for human body model (H3B, >8 kV), withstands 50 A non-repetitive forward surge (8.3 ms half-sine), and maintains stable operation across -65 °C to +175 °C ambient and storage ranges - enabling use in automotive infotainment and under-hood sensor nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 7.5 V - maximum continuous reverse voltage before significant leakage; sets operating margin above signal swing in 5 V/3.3 V bus applications. |
| Reverse Breakdown (VBR) | 8.33–9.3 V at 1 mA - defined avalanche onset range ensuring predictable turn-on during transients without premature conduction. |
| Clamping Voltage (VC) | 12.9 V max at 15.5 A (10/1000 μs) - limits downstream IC voltage stress during ESD events while preserving signal integrity. |
| Capacitance (CD) | 773 pF typical at 0 V, 1 MHz - low enough for USB 2.0 (480 Mbps) and industrial CAN FD interfaces without signal degradation. |
| ESD Immunity | ±30 kV contact & air discharge (IEC 61000-4-2) - exceeds Level 4 system-level ESD requirements for consumer and industrial enclosures. |
| Peak Pulse Power | 200 W (10/1000 μs), 1000 W (8/20 μs) - sustains multi-pulse surges in telecom line cards and PoE-powered edge devices. |
| Operating Temp Range | -65 °C to +175 °C - supports deployment in extended-temperature automotive ECUs and downhole instrumentation. |
Pinout & Package
SMF7V5A-M3-18 uses the DO-219AB (SOD-123W-compatible) surface-mount package: 3.9 mm × 1.9 mm × 1.08 mm, low-profile, cathode-bar marked, MSL level 1, reflow-compatible up to 260 °C peak.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side terminal | Connected to protected signal line (e.g., USB D+); conducts surge current toward ground when cathode is held at reference potential. |
| Cathode | Reference/Ground return | Connected to system ground plane; establishes clamping reference and provides low-inductance path for transient energy dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise fast-response technology | Sub-nanosecond response ensures clamping activation before ESD pulse peaks - critical for protecting high-speed SerDes receivers. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including HBM >8 kV, temperature cycling, and high-temperature operating life - suitable for ADAS camera modules. |
| Low incremental surge resistance | Minimizes voltage overshoot during high-di/dt events - improves clamping precision versus standard TVS diodes in 12 V power rail protection. |
| SOD-123W/SOD-123F compatibility | Enables drop-in replacement on existing SOD-123 footprints without PCB redesign - reduces qualification effort for legacy board upgrades. |
Applications
| USB 2.0 Interface Protection | HDMI Signal Line Hardening |
|---|---|
Use Scenario: Protecting D+/D- differential pair in portable media players against user-handling ESD. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed directly at connector entry point. Use Value: 773 pF capacitance avoids signal rise-time degradation at 480 Mbps; 12.9 V clamping prevents damage to USB PHY transceivers rated ≤13.2 V abs max. |
Use Scenario: Shielding TMDS clock and data channels in set-top boxes exposed to front-panel ESD events. IC Role / Device Role / Timing Role: Point-of-entry ESD clamp on each TMDS lane, referenced to chassis ground. Use Value: ±30 kV contact discharge rating meets IEC 61000-4-2 Level 4; low leakage (<0.1 µA at 7.5 V) preserves DC bias stability on high-impedance inputs. |
| Automotive Sensor Interface | Industrial CAN FD Node |
Use Scenario: Safeguarding LIN or SENT outputs of engine temperature sensors in under-hood environments. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional clamp (cathode grounded) on single-wire signal line. Use Value: -65 °C to +175 °C operating range matches engine bay thermal profiles; AEC-Q101 qualification ensures long-term reliability in vibration-prone mounting. |
Use Scenario: Protecting CAN_H/CAN_L pins of gateways in factory automation PLCs subjected to maintenance-tool ESD. IC Role / Device Role / Timing Role: Dual-diode configuration (two SMF7V5A-M3-18 units) on differential bus lines with common ground reference. Use Value: 15.5 A peak pulse current handles multiple 8/20 μs surges per IEC 61000-4-5; 180 K/W RthJA allows thermal management without heatsinking on 2-layer boards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5A-E3/57T | Higher clamping voltage (12.5 V vs. 12.9 V), larger SMA package (4.5 mm × 2.7 mm), 600 W peak power (10/1000 μs). | Less suitable for space-constrained USB/HDMI layouts; better for higher-energy 24 V industrial I/O protection. | Select SMAJ7.5A-E3/57T when board area permits and surge energy exceeds 200 W capability. |
| TPD2E007DRYR | Lower capacitance (7 pF), dual-channel, integrated 0.5 Ω series resistors; not AEC-Q101 qualified; 12 V clamping at 1 A. | Optimized for ultra-high-speed interfaces (USB 3.0, PCIe); lacks automotive qualification and high-current surge handling. | Choose TPD2E007DRYR only for compact, low-capacitance designs where ESD threat is limited to <10 kV and no AEC-Q101 compliance is required. |
Compared with SMAJ7.5A-E3/57T and TPD2E007DRYR, SMF7V5A-M3-18 uniquely balances AEC-Q101 compliance, 773 pF capacitance for mid-speed interfaces, and DO-219AB footprint - making it optimal for cost-sensitive automotive and industrial designs needing validated reliability without over-engineering.
Availability
SMF7V5A-M3-18 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive sensor nodes, and industrial CAN FD systems requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for SMF7V5A-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, specializing in high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The SMF series targets robust, low-profile ESD protection for high-volume board-level integration - engineered specifically for AEC-Q101 compliance, automated assembly, and signal integrity preservation in data and power lines.
FAQ
What is the maximum clamping voltage of the SMF7V5A-M3-18 under a 10/1000 μs surge?
The SMF7V5A-M3-18 has 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 value is measured per Vishay's Rev. 2.4 datasheet and defines the upper voltage limit imposed on protected circuitry during standardized surge events - critical for ensuring compatibility with 13.2 V absolute maximum-rated ICs.
Is SMF7V5A-M3-18 qualified to AEC-Q101 standards?
Yes, SMF7V5A-M3-18 is AEC-Q101 qualified, meeting stress test requirements including human body model (HBM) Class H3B (>8 kV), temperature cycling, and high-temperature operating life. This qualification is explicitly stated in Vishay's SMF5V0A–SMF58A datasheet (Document Number: 85881, Rev. 2.4) and confirms suitability for automotive applications such as body control modules and infotainment interfaces.
What is the typical capacitance of SMF7V5A-M3-18 at 0 V and 1 MHz?
The typical junction capacitance (CD) of SMF7V5A-M3-18 is 773 pF at 0 V reverse bias and 1 MHz frequency, as specified in the Electrical Characteristics table of Vishay's official datasheet. This value enables reliable use on 480 Mbps USB 2.0 lines while maintaining acceptable signal integrity - confirmed by Vishay's Fig. 12 capacitance-vs-voltage curves.
Does SMF7V5A-M3-18 support reflow soldering, and what is its peak temperature rating?
Yes, SMF7V5A-M3-18 is fully compatible with reflow soldering processes and rated for a peak temperature of 260 °C, per J-STD-020 MSL level 1 guidelines. Its DO-219AB package uses tin-plated terminations and UL 94 V-0 molding compound - enabling compatibility with standard lead-free reflow profiles used in high-volume PCB assembly.
What is the operating temperature range for SMF7V5A-M3-18?
The SMF7V5A-M3-18 operates across -65 °C to +175 °C, matching the full junction temperature range (TJ) and storage temperature range (Tstg) specified in Vishay's datasheet. This wide range supports deployment in extreme environments such as engine compartments, industrial motor drives, and outdoor telecom equipment - without derating or thermal monitoring overhead.
SMF7V5A-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):
- 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-M3-18 FAQ
1.How can I place an order for SMF7V5A-M3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF7V5A-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 SMF7V5A-M3-18 reliable?
The price and inventory of SMF7V5A-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 SMF7V5A-M3-18 is usually 5 days.
3.What payment methods are accepted for SMF7V5A-M3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF7V5A-M3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF7V5A-M3-18?
SMF7V5A-M3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF7V5A-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 SMF7V5A-M3-18?
For technical support, including SMF7V5A-M3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF7V5A-M3-18 requirements.
6.How does Aetrix verify that SMF7V5A-M3-18 is sourced from the original manufacturer or authorized distributors?
All SMF7V5A-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 SMF7V5A-M3-18 meets industry standards.
7.What is the process for return or replacement of SMF7V5A-M3-18?
All SMF7V5A-M3-18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF7V5A-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 SMF7V5A-M3-18 part is unused and in its original packaging.
Return procedure for SMF7V5A-M3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF7V5A-M3-18 Tags
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