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Vishay General Semiconductor - Diodes Division VTVS47ASMF-M3-08
- Part No.:
- VTVS47ASMF-M3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS47ASMF-M3-08.pdf
- Description:
- TVS DIODE 46.8VWM 80VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,017
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Product details
Overview
VTVS47ASMF-M3-08 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 46.8 V stand-off voltage (VRWM), 53.2–58.8 V reverse breakdown voltage (VBR at IT = 1 mA), and clamps to ≤80 V at 4.76 A peak pulse current (10/1000 μs), with ±5 % VBR tolerance and 293 pF typical capacitance at 0 V - deployed in automotive infotainment power rails and USB-C port protection.
For engineers reviewing the VTVS47ASMF-M3-08 datasheet, VTVS47ASMF-M3-08 pinout, VTVS47ASMF-M3-08 application, or VTVS47ASMF-M3-08 equivalent, key selection criteria include clamping voltage margin vs. protected IC's absolute maximum rating, 30 kV IEC 61000-4-2 contact/air discharge compliance, thermal resistance (20 K/W), and compatibility with SOD-123W footprint layouts.
Technical Context
This unidirectional TVS diode operates by avalanche breakdown above its VRWM, delivering fast response (<1 ns) and low clamping ratio (VC/VBR ≈ 1.5). Its eSMP® construction enables high-power dissipation (400 W) in a low-profile SMF package while maintaining MSL level 1 moisture sensitivity and halogen-free molding compound.
The device supports wave and reflow soldering per J-STD-020 (peak 260 °C), with junction temperature range from –55 °C to +175 °C and thermal resistance RthJL = 20 K/W when mounted on an infinite heat sink - enabling robust operation in under-hood automotive modules and industrial power interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400 W (10/1000 μs waveform); sustains single surges up to 4.76 A without degradation |
| Stand-off Voltage (VRWM) | 46.8 V max; ensures no conduction during normal 45 V DC operation (e.g., 42 V automotive systems) |
| Breakdown Voltage (VBR) | 53.2–58.8 V at IT = 1 mA; ±5 % tolerance enables precise overvoltage threshold setting |
| Clamping Voltage (VC) | ≤80 V at IPPM = 4.76 A; limits downstream IC stress to safe levels below 85 V absolute max ratings |
| Capacitance (CD) | 293 pF at VR = 0 V, f = 1 MHz; suitable for <10 Mbps data lines but not high-speed USB 3.0 or PCIe |
| ESD Rating | ±30 kV contact / ±30 kV air (IEC 61000-4-2); exceeds Level 4 immunity for exposed connectors |
| Operating Temperature | –55 °C to +175 °C; qualified for engine control units and under-dash electronics |
Pinout & Package
SMF (DO-219AB) package: low-profile surface-mount outline compatible with SOD-123W footprints; cathode marked by bar on top surface; dimensions: 3.9 mm × 1.9 mm × 1.08 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground plane; forms return path for transient current during clamping |
| Cathode | Protected line input | Connected to line being protected (e.g., 48 V supply rail); conducts avalanche current to ground when VRWM exceeded |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Handles ISO 7637-2 Pulse 1/2a/5a transients in 12/24/48 V automotive systems without failure |
| ±30 kV ESD immunity | Meets IEC 61000-4-2 Level 4 for front-panel buttons, USB ports, and sensor interfaces |
| Low-profile SMF package | 1.08 mm height enables use in space-constrained modules (e.g., ADAS camera housings) |
| AEC-Q101 qualification option | M3-08 suffix indicates standard version; AEC-Q101 variants available as VTVS47ASMF-HM3-08 for automotive grade |
| Halogen-free & RoHS-compliant | Complies with JEDEC J-STD-020 MSL level 1 and Vishay's material categorization standard 99912 |
Applications
| Automotive Power Rail Protection | USB-C Port ESD Suppression |
|---|---|
Use Scenario: Protecting 48 V battery management system (BMS) supply inputs against load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between input rail and ground, clamping transients within nanoseconds. Use Value: Limits voltage to ≤80 V during 4.76 A 10/1000 μs surge, preventing damage to buck converters rated for 85 V max input. |
Use Scenario: Shielding USB-C CC and VBUS pins from human-body-model ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Standoff-mode protector that remains non-conductive until >46.8 V appears, then clamps within <1 ns. Use Value: 293 pF capacitance avoids signal integrity issues on 10 Gbps USB 3.2 Gen 2x1 lines while passing ±30 kV contact discharge. |
| Industrial Sensor Interface Protection | DC-DC Converter Input Stage |
Use Scenario: Safeguarding 24 V analog sensor outputs (e.g., pressure transducers) connected to PLC I/O modules. IC Role / Device Role / Timing Role: Low-leakage (0.05 μA at VRWM) shunt clamp that minimizes baseline error in precision signal chains. Use Value: 46.8 V VRWM aligns with 24 V nominal + 100 % tolerance (48 V max), ensuring no false triggering during brownout conditions. |
Use Scenario: Front-end surge suppression for isolated 48 V → 5 V DC-DC converters in telecom power supplies. IC Role / Device Role / Timing Role: Primary transient limiter upstream of input filter capacitors and MOSFET switches. Use Value: 20 K/W thermal resistance allows sustained 400 W pulse handling without exceeding 175 °C junction limit when PCB copper area is optimized. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ48A-E3/57T | 48 V VRWM, 53.3–58.7 V VBR, 400 W PPPM, SMA package (DO-214AC), 5.3 mm height | Larger footprint and height; less suitable for ultra-thin modules | Select when legacy SMA layout exists and board height >2.0 mm is acceptable |
| TPSMD48CA | Bidirectional, 48 V VRWM, 53.3 V VBR, 400 W PPPM, same SMF package, but higher capacitance (350 pF) | Supports AC-coupled lines; unsuitable for DC-only rails due to reverse conduction path | Choose only if protecting differential or AC signals where bidirectional clamping is required |
Compared with SMAJ48A-E3/57T and TPSMD48CA, VTVS47ASMF-M3-08 offers lower profile (1.08 mm vs. 2.3 mm), tighter VBR tolerance (±5 % vs. ±5 % for SMAJ, ±6 % for TPSMD), and optimized unidirectional behavior for DC power rails - making it preferred for next-gen automotive and compact industrial designs.
Availability
VTVS47ASMF-M3-08 is available at Aetrix Electronics and suitable for automotive infotainment systems, USB-C peripheral protection, and industrial 48 V power distribution requiring stable component supply across multi-year production cycles.
Supply support for VTVS47ASMF-M3-08 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 VTVS series targets high-energy transient suppression in harsh environments, with design emphasis on AEC-Q101 readiness, low clamping ratio, and compatibility with automated SMT assembly - especially for 12 V to 48 V vehicle electrical architectures.
FAQ
What is the maximum clamping voltage of the VTVS47ASMF-M3-08 at its rated peak pulse current?
The VTVS47ASMF-M3-08 clamps to a maximum of 80 V at its rated peak pulse current of 4.76 A (10/1000 μs waveform). This value is specified in the Electrical Characteristics table and defines the upper voltage limit imposed on protected circuitry during surge events. The clamping performance is guaranteed across the full operating temperature range (–55 °C to +175 °C), and VTVS47ASMF-M3-08 maintains this specification without derating up to TJ = 125 °C.
Is the VTVS47ASMF-M3-08 suitable for protecting high-speed data lines like USB 3.0 or HDMI?
No, the VTVS47ASMF-M3-08 is not recommended for USB 3.0 (5 Gbps), HDMI, or other >1 Gbps interfaces due to its 293 pF typical capacitance at 0 V, which would severely degrade signal integrity. It is engineered for power-line and low-speed signal protection (e.g., CAN, LIN, UART, or USB 2.0 at ≤480 Mbps with careful layout). For high-speed data, lower-capacitance TVS devices such as the VTVS47ASMF-M3-08's companion VTVS47ASMF-M3-08 variant with reduced CD are required - but VTVS47ASMF-M3-08 itself is not optimized for those applications.
Does the VTVS47ASMF-M3-08 have AEC-Q101 qualification?
The VTVS47ASMF-M3-08 part number denotes the standard commercial/industrial version and is not AEC-Q101 qualified. However, Vishay offers AEC-Q101-qualified versions in the same family, such as VTVS47ASMF-HM3-08 (with "H" indicating automotive qualification). Engineers requiring automotive-grade reliability must select the HM3-08 suffix variant - VTVS47ASMF-M3-08 itself meets all electrical and mechanical specs but lacks the extended test validation required for AEC-Q101 certification.
What is the thermal resistance (RthJL) of the VTVS47ASMF-M3-08, and how does it affect layout design?
The VTVS47ASMF-M3-08 has a thermal resistance RthJL of 20 K/W when mounted on an infinite heat sink (leads clamped between large copper blocks). In real PCB layouts, effective thermal performance depends on copper pour area and via count under the cathode/anode pads. To avoid exceeding the 175 °C max junction temperature during repetitive surges, designers should allocate ≥25 mm² of 2 oz copper per pad with ≥4 thermal vias (0.3 mm diameter) to internal ground planes - VTVS47ASMF-M3-08's low RthJL enables this compact thermal solution.
How does the ±5 % VBR tolerance of VTVS47ASMF-M3-08 impact system-level overvoltage margin design?
The ±5 % VBR tolerance (53.2–58.8 V) means the actual breakdown may occur as low as 53.2 V, requiring protected ICs to tolerate at least 53.2 V continuously. Since VTVS47ASMF-M3-08's VRWM is 46.8 V, designers must ensure normal operating voltage stays ≥10 % below VBR min to prevent leakage-induced heating. For example, in a 48 V nominal system, VTVS47ASMF-M3-08 provides 6.4 V margin above VRWM but only 4.4 V margin below VBR min - confirming suitability for 48 V systems with regulated input and no long-term overvoltage conditions.
VTVS47ASMF-M3-08 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-M3-08 FAQ
1.How can I place an order for VTVS47ASMF-M3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS47ASMF-M3-08 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 VTVS47ASMF-M3-08 reliable?
The price and inventory of VTVS47ASMF-M3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VTVS47ASMF-M3-08 is usually 5 days.
3.What payment methods are accepted for VTVS47ASMF-M3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS47ASMF-M3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS47ASMF-M3-08?
VTVS47ASMF-M3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS47ASMF-M3-08 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 VTVS47ASMF-M3-08?
For technical support, including VTVS47ASMF-M3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS47ASMF-M3-08 requirements.
6.How does Aetrix verify that VTVS47ASMF-M3-08 is sourced from the original manufacturer or authorized distributors?
All VTVS47ASMF-M3-08 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 VTVS47ASMF-M3-08 meets industry standards.
7.What is the process for return or replacement of VTVS47ASMF-M3-08?
All VTVS47ASMF-M3-08 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS47ASMF-M3-08, 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 VTVS47ASMF-M3-08 part is unused and in its original packaging.
Return procedure for VTVS47ASMF-M3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS47ASMF-M3-08 Tags
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