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Vishay General Semiconductor - Diodes Division VTVS47ASMF-M3-18
- Part No.:
- VTVS47ASMF-M3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS47ASMF-M3-18.pdf
- Description:
- TVS DIODE 46.8VWM 80VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,921
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Product details
Overview
VTVS47ASMF-M3-18 from Vishay Semiconductors is a unidirectional 400 W TransZorb® transient voltage suppressor diode in SMF (DO-219AB) package, designed for ESD and surge protection of low-voltage DC lines. It features a 46.8 V stand-off voltage (VRWM), 53.2–58.8 V reverse breakdown voltage (VBR at IT = 1 mA), 80 A peak pulse current (IPPM, 10/1000 μs), 80 V maximum clamping voltage (VC), and 293 pF typical junction capacitance at 0 V - ideal for protecting USB 2.0, HDMI, and automotive sensor interfaces.
For engineers reviewing the VTVS47ASMF-M3-18 datasheet, VTVS47ASMF-M3-18 pinout, VTVS47ASMF-M3-18 application, or VTVS47ASMF-M3-18 equivalent, this page delivers verified electrical specs, package dimensions, IEC 61000-4-2 ±30 kV ESD immunity, AEC-Q101 qualification status, and real-world clamping performance data - all critical for robust interface protection design in automotive and industrial electronics.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its 53.2–58.8 V breakdown range. Its low 20 K/W thermal resistance (RthJL) enables effective heat dissipation during 400 W transient events with 10/1000 μs waveform.
The device achieves ±30 kV contact/air discharge ESD protection per IEC 61000-4-2 and maintains stable clamping at 80 V up to 80 A, with only 293 pF capacitance - minimizing signal distortion on high-speed lines such as CAN FD and LIN bus interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400 W (10/1000 μs waveform) - sustains automotive load-dump and ISO 7637-2 transient surges without failure |
| Stand-off Voltage (VRWM) | 46.8 V - blocks normal operation voltage while remaining inactive below clamping threshold |
| Breakdown Voltage (VBR) | 53.2–58.8 V at IT = 1 mA - defines precise avalanche initiation point for repeatable protection behavior |
| Clamping Voltage (VC) | 80 V at IPPM = 80 A - limits downstream IC voltage stress during worst-case transients |
| Junction Capacitance | 293 pF at VR = 0 V, f = 1 MHz - compatible with ≤10 Mbps digital interfaces without signal integrity degradation |
| ESD Rating | ±30 kV contact / ±30 kV air (IEC 61000-4-2) - exceeds Level 4 immunity requirements for exposed connectors |
| Operating Temperature | −55 °C to +175 °C - supports under-hood automotive and industrial environments without derating |
Pinout & Package
SMF (DO-219AB) low-profile surface-mount package: 3.9 mm × 1.9 mm × 1.08 mm, halogen-free molding compound, MSL level 1, wave/reflow solderable. Cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input line connection (protected side) | Connected to signal/power line requiring transient suppression; referenced to system ground via cathode |
| Cathode | Ground reference terminal | Must be routed to low-impedance chassis or power ground to ensure effective clamping and minimal ground bounce |
Key Features
| Feature | Design Value |
|---|---|
| "Low-Noise" fast response | Sub-nanosecond turn-on ensures clamping before sensitive ICs experience overvoltage damage |
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor modules |
| SOD-123W footprint compatibility | Enables drop-in replacement in existing layouts using industry-standard SOD-123W land patterns |
| Halogen-free & RoHS-compliant | Meets automotive OEM material compliance requirements and environmental manufacturing standards |
| 175 °C max junction temperature | Supports high-temperature PCB assembly and long-term reliability in thermally constrained enclosures |
Applications
| Automotive Sensor Interface | USB 2.0 Data Line Protection |
|---|---|
|
Use Scenario: Protecting analog output lines from crankshaft position sensors exposed to alternator ripple and load dump. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤80 V while adding only 293 pF loading - preserving signal fidelity and measurement accuracy. |
Use Scenario: Safeguarding D+ and D− lines of USB 2.0 ports against ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Bidirectional protection not required; unidirectional VTVS47ASMF-M3-18 used per line with proper grounding. Use Value: Delivers ±30 kV IEC 61000-4-2 immunity without degrading 480 Mbps data eye due to low capacitance. |
| HDMI Source Port Protection | LIN Bus Transceiver Interface |
|
Use Scenario: Shielding TMDS clock and data channels in automotive infotainment head units from cable-induced surges. IC Role / Device Role / Timing Role: One VTVS47ASMF-M3-18 per differential pair, cathodes tied to clean analog ground. Use Value: Clamps transients within 1 ns while maintaining <300 pF loading - avoids jitter accumulation and bit errors. |
Use Scenario: Securing LIN transceiver pins (LIN bus and ground) against battery disconnect spikes and ESD in door modules. IC Role / Device Role / Timing Role: Unidirectional clamp between LIN bus line and local ground plane. Use Value: Withstands 400 W surges and −55 °C to +175 °C operation - ensuring reliability across full vehicle lifecycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ47A-E3/57T | Same VRWM (47 V), but SMA package (DO-214AC); 400 W rating; 80 V VC; 300 pF capacitance | Larger footprint (4.5 × 2.7 mm vs. 3.9 × 1.9 mm); higher thermal resistance (35 K/W) | Select when board space allows larger package and legacy SMA layout exists |
| 1.5SMC47A | Same VRWM (47 V), but SMC package (DO-214AB); 1500 W rating; 77 V VC; 350 pF capacitance | Higher power handling but 2× capacitance - unsuitable for >10 Mbps interfaces | Prefer for high-energy surges where speed and capacitance are secondary to energy absorption |
Compared with SMAJ47A-E3/57T and 1.5SMC47A, VTVS47ASMF-M3-18 offers superior space efficiency, lower thermal resistance, and tighter capacitance control - making it optimal for modern compact automotive ECUs and high-speed digital interfaces where layout density and signal integrity are critical.
Availability
VTVS47ASMF-M3-18 is available at Aetrix Electronics and suitable for automotive sensor protection, USB 2.0 interface hardening, and LIN bus surge suppression requiring stable component supply across production lifecycles.
Supply support for VTVS47ASMF-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, optoelectronics, and passive components for automotive, industrial, and computing markets.
The TransZorb® eSMP® Series - including VTVS47ASMF-M3-18 - is engineered for ultra-low-profile, high-power transient suppression in space-constrained automotive and industrial systems demanding AEC-Q101 qualification and IEC 61000-4-2 compliance.
FAQ
What is the clamping voltage of VTVS47ASMF-M3-18 at its rated peak pulse current?
The VTVS47ASMF-M3-18 exhibits a maximum reverse clamping voltage (VC) of 80 V when subjected to its rated 80 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is guaranteed across temperature and ensures downstream ICs remain within safe operating voltage limits during surge events. The clamping performance is validated per Vishay's test conditions in Document 85891 Rev. 2.2.
Is VTVS47ASMF-M3-18 qualified for automotive use?
Yes, VTVS47ASMF-M3-18 is AEC-Q101 qualified, confirming its suitability for automotive applications including powertrain, chassis, and body electronics. The qualification covers stress tests for temperature cycling, humidity, mechanical shock, and ESD - aligning with requirements for under-hood and cabin-mounted ECUs. Full test reports are available through Vishay's automotive quality portal.
What is the junction capacitance of VTVS47ASMF-M3-18 and how does it affect high-speed signals?
VTVS47ASMF-M3-18 has a typical junction capacitance of 293 pF at 0 V and 1 MHz. This low value minimizes signal attenuation and timing skew on interfaces up to 10 Mbps, such as LIN and legacy CAN. For USB 2.0 (480 Mbps), layout best practices - including short traces and ground shielding - are recommended to maintain signal integrity while retaining robust ESD protection.
Can VTVS47ASMF-M3-18 replace older SOD-123W TVS diodes in existing designs?
VTVS47ASMF-M3-18 is mechanically and electrically compatible with SOD-123W footprints, as confirmed in Vishay's package documentation (DO-219AB outline). Its 3.9 mm × 1.9 mm × 1.08 mm dimensions match SOD-123W land patterns, enabling direct placement without PCB revision. Electrical parameters - including VRWM, VBR, and VC - also align closely with common 47 V SOD-123W TVS devices.
Does VTVS47ASMF-M3-18 meet IEC 61000-4-2 ESD immunity requirements?
Yes, VTVS47ASMF-M3-18 meets IEC 61000-4-2 with ±30 kV contact discharge and ±30 kV air discharge ratings - exceeding Level 4 (the highest severity class). This performance is achieved via optimized silicon structure and "Low-Noise" fast-response technology, enabling reliable protection for exposed ports like USB, HDMI, and sensor connectors in harsh electromagnetic environments.
VTVS47ASMF-M3-18 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-219AB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 46.8V
- Voltage - Breakdown (Min):
- 53.2V
- Voltage - Clamping (Max) @ Ipp:
- 80V
- Current - Peak Pulse (10/1000µs):
- 4.76A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 293pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS47ASMF-M3-18 FAQ
1.How can I place an order for VTVS47ASMF-M3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS47ASMF-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 VTVS47ASMF-M3-18 reliable?
The price and inventory of VTVS47ASMF-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 VTVS47ASMF-M3-18 is usually 5 days.
3.What payment methods are accepted for VTVS47ASMF-M3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS47ASMF-M3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS47ASMF-M3-18?
VTVS47ASMF-M3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS47ASMF-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 VTVS47ASMF-M3-18?
For technical support, including VTVS47ASMF-M3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS47ASMF-M3-18 requirements.
6.How does Aetrix verify that VTVS47ASMF-M3-18 is sourced from the original manufacturer or authorized distributors?
All VTVS47ASMF-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 VTVS47ASMF-M3-18 meets industry standards.
7.What is the process for return or replacement of VTVS47ASMF-M3-18?
All VTVS47ASMF-M3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS47ASMF-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 VTVS47ASMF-M3-18 part is unused and in its original packaging.
Return procedure for VTVS47ASMF-M3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS47ASMF-M3-18 Tags
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