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Vishay General Semiconductor - Diodes Division VTVS3V3ASMF-M3-18
- Part No.:
- VTVS3V3ASMF-M3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS3V3ASMF-M3-18.pdf
- Description:
- TVS DIODE 3.3VWM 8.9VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,636
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Product details
Overview
VTVS3V3ASMF-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 such as USB, HDMI, and automotive sensor interfaces. It features a 3.3 V stand-off voltage (VRWM), 6.4–7.0 V reverse breakdown voltage (VBR) at 1 mA, 8.9 V maximum clamping voltage (VC) at 42.95 A peak pulse current, and ±30 kV IEC 61000-4-2 ESD immunity.
For engineers reviewing the VTVS3V3ASMF-M3-18 datasheet, VTVS3V3ASMF-M3-18 pinout, VTVS3V3ASMF-M3-18 application, or VTVS3V3ASMF-M3-18 equivalent, key selection criteria include clamping performance at low VRWM, SOD-123W-compatible footprint, AEC-Q101 qualification status, halogen-free construction, and 175 °C junction temperature rating for under-hood automotive use.
Technical Context
This TVS diode operates in avalanche mode to clamp transient overvoltages above its breakdown threshold while maintaining low leakage (<0.05 μA at VRWM). Its 10/1000 μs waveform-rated 400 W peak pulse power and 20 K/W thermal resistance enable robust surge handling without thermal runaway in compact PCB layouts.
The device uses "Low-Noise" fast-response technology with sub-nanosecond response time, ensuring protection before sensitive downstream ICs are damaged. Its unidirectional polarity and single-channel configuration make it suitable for DC rail protection where reverse conduction must be blocked.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 3.3 V - Maximum continuous DC operating voltage before clamping begins; matches 3.3 V logic and interface rails. |
| Breakdown Voltage (VBR) | 6.4–7.0 V at 1 mA - Tight ±5 % tolerance ensures predictable turn-on across production lots. |
| Clamping Voltage (VC) | 8.9 V at 42.95 A - Limits transient voltage seen by protected circuitry during 10/1000 μs surges. |
| Peak Pulse Power (PPP) | 400 W - Sustains high-energy transients per IEC 61000-4-5 Level 4 (4 kV) without failure. |
| ESD Rating | ±30 kV contact / ±30 kV air - Meets highest IEC 61000-4-2 severity level for system-level ESD robustness. |
| Junction Temperature | -55 to +175 °C - Enables deployment in automotive engine control units and industrial sensors. |
| Capacitance (CD) | 2095 pF at 0 V - Low enough for USB 2.0 and CAN FD signal integrity; verified at 1 MHz. |
Pinout & Package
SMF (DO-219AB) low-profile surface-mount package, compatible with SOD-123W footprint; dimensions: 3.9 mm × 1.9 mm × 1.08 mm; cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground; completes clamping path during positive transients. |
| Cathode | Protected line terminal | Connected to the line being protected (e.g., USB D+); conducts avalanche current to ground when VRWM exceeded. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Handles 10/1000 μs surges up to 42.95 A without degradation-critical for ISO 7637-2 pulse 5a compliance. |
| ±30 kV ESD immunity | Eliminates need for secondary ESD protection stages in USB, HDMI, and LIN bus interfaces. |
| Halogen-free & RoHS-compliant | Meets automotive OEM material requirements (J-STD-020 MSL level 1, JEDEC JESD201 class 2 whisker testing). |
| Wave and reflow solderable | Withstands peak reflow temperatures up to 260 °C-compatible with standard lead-free assembly processes. |
| AEC-Q101 qualified option | VTVS3V3ASMF-M3-18 variant is not AEC-Q101 qualified; AEC-Q101 versions use -HM3 or -H suffixes (e.g., VTVS3V3ASMF-HM3-18). |
Applications
| Automotive Sensor Interface | USB 2.0 Data Line Protection |
|---|---|
Use Scenario: Protecting 3.3 V supply and signal lines of crankshaft/camshaft position sensors exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient energy to ground during negative-going spikes on sensor VCC or output lines. Use Value: Prevents latch-up or permanent damage to Hall-effect ICs with 3.3 V supply rails while maintaining <1 μA leakage at nominal voltage. |
Use Scenario: Safeguarding USB D+ and D− lines against ESD events during hot-plug insertion in infotainment head units. IC Role / Device Role / Timing Role: Fast-clamping diode placed directly at connector to shunt ESD current before reaching USB PHY transceiver. Use Value: 2095 pF capacitance preserves signal integrity up to 480 Mbps; ±30 kV air discharge rating exceeds IEC 61000-4-2 requirement. |
| Industrial CAN FD Node | Smartphone Camera Module Interface |
Use Scenario: Protecting CAN FD transceiver I/O pins (CANH/CANL) in factory automation controllers subject to cable discharge events. IC Role / Device Role / Timing Role: Standoff-rated TVS on each differential line to clamp common-mode surges without distorting differential signaling. Use Value: 3.3 V VRWM allows use on 3.3 V CAN FD nodes; 8.9 V VC limits stress on transceiver inputs during 1 kV EFT bursts. |
Use Scenario: Shielding MIPI CSI-2 data lanes between image sensor and SoC from board-level ESD during assembly and field operation. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on each data lane, placed adjacent to connector to minimize stub length. Use Value: 2095 pF total capacitance avoids signal rise-time degradation on 1.5 Gbps MIPI links; halogen-free molding compound meets mobile OEM environmental specs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ3.3A | Same VRWM (3.3 V) and unidirectional polarity, but lower PPP (400 W same), higher VC (11.2 V), larger SMA package (DO-214AC). | Less suitable for space-constrained automotive modules due to 4.5 mm × 2.7 mm footprint vs. SMF's 3.9 mm × 1.9 mm. | Select when legacy SMA layout exists and 11.2 V clamping is acceptable for protected IC's absolute max rating. |
| TPD4E05U06DQAR | Quad-channel 3.3 V TVS array (0.8 pF per channel), much lower capacitance, but only 200 W PPP and ±12 kV ESD rating. | Better for high-speed data lines (e.g., PCIe, USB 3.0), insufficient for ISO 7637-2 pulse 5a or high-energy ESD. | Choose for multi-line protection where ultra-low capacitance is mandatory and surge energy is low. |
Compared with SMAJ3.3A and TPD4E05U06DQAR, VTVS3V3ASMF-M3-18 delivers superior clamping (8.9 V vs. 11.2 V), smaller footprint, and higher ESD robustness (±30 kV vs. ±12 kV), making it optimal for next-gen automotive and industrial 3.3 V interfaces requiring compact, high-energy protection.
Availability
VTVS3V3ASMF-M3-18 is available at Aetrix Electronics and suitable for automotive sensor interfaces, USB 2.0 data line protection, industrial CAN FD nodes, and smartphone camera module interfaces requiring stable component supply and full traceability.
Supply support for VTVS3V3ASMF-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 VTVS eSMP® Series targets high-density, high-surge applications demanding AEC-Q101 qualification, low-profile packaging, and precise clamping-designed specifically for modern automotive ECUs and industrial IoT edge nodes.
FAQ
What is the clamping voltage of VTVS3V3ASMF-M3-18 at its rated peak pulse current?
The VTVS3V3ASMF-M3-18 has a maximum reverse clamping voltage (VC) of 8.9 V at 42.95 A peak pulse current (10/1000 μs waveform). This value is measured under standardized surge conditions and guarantees that protected circuits experience no more than 8.9 V during worst-case transients, provided layout minimizes parasitic inductance. The VTVS3V3ASMF-M3-18 datasheet specifies this parameter in Table "Electrical Characteristics" on page 2.
Is VTVS3V3ASMF-M3-18 AEC-Q101 qualified?
No, VTVS3V3ASMF-M3-18 is not AEC-Q101 qualified. The AEC-Q101 qualified version carries an "H" prefix in the environmental code-for example, VTVS3V3ASMF-HM3-18. The "M3-18" suffix indicates RoHS-compliant, lead-free terminations on a 13″ reel (10,000 pcs), but does not imply automotive qualification. Always verify qualification status using the full part number and Vishay's official product change notices.
What package type does VTVS3V3ASMF-M3-18 use, and is it compatible with automated assembly?
VTVS3V3ASMF-M3-18 uses the SMF (DO-219AB) package-a low-profile, halogen-free surface-mount outline measuring 3.9 mm × 1.9 mm × 1.08 mm. It is fully compatible with wave and reflow soldering, rated for peak reflow temperatures up to 260 °C per J-STD-020, and classified as MSL level 1. The cathode marking bar and tape orientation per document S8-V-3717.02-003 ensure reliable automated placement.
How does the capacitance of VTVS3V3ASMF-M3-18 affect high-speed signal lines?
VTVS3V3ASMF-M3-18 has a typical junction capacitance (CD) of 2095 pF at 0 V, measured at 1 MHz. While this value is appropriate for USB 2.0 (480 Mbps) and CAN FD (up to 5 Mbps), it is too high for USB 3.0, PCIe, or MIPI D-PHY v2.0+ interfaces, where sub-1 pF per line is required. For those applications, consider multi-channel low-capacitance arrays instead of the VTVS3V3ASMF-M3-18.
What is the maximum operating temperature range for VTVS3V3ASMF-M3-18?
The VTVS3V3ASMF-M3-18 supports a junction temperature range of -55 °C to +175 °C, enabling use in under-hood automotive environments and industrial enclosures without forced cooling. This rating is validated per Vishay's thermal characterization (RthJL = 20 K/W on infinite heat sink) and aligns with the absolute maximum ratings table on page 2 of the VTVS3V3ASMF-M3-18 datasheet.
VTVS3V3ASMF-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):
- 3.3V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 8.9V
- Current - Peak Pulse (10/1000µs):
- 42.95A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 2095pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS3V3ASMF-M3-18 FAQ
1.How can I place an order for VTVS3V3ASMF-M3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS3V3ASMF-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 VTVS3V3ASMF-M3-18 reliable?
The price and inventory of VTVS3V3ASMF-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 VTVS3V3ASMF-M3-18 is usually 5 days.
3.What payment methods are accepted for VTVS3V3ASMF-M3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS3V3ASMF-M3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS3V3ASMF-M3-18?
VTVS3V3ASMF-M3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS3V3ASMF-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 VTVS3V3ASMF-M3-18?
For technical support, including VTVS3V3ASMF-M3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS3V3ASMF-M3-18 requirements.
6.How does Aetrix verify that VTVS3V3ASMF-M3-18 is sourced from the original manufacturer or authorized distributors?
All VTVS3V3ASMF-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 VTVS3V3ASMF-M3-18 meets industry standards.
7.What is the process for return or replacement of VTVS3V3ASMF-M3-18?
All VTVS3V3ASMF-M3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS3V3ASMF-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 VTVS3V3ASMF-M3-18 part is unused and in its original packaging.
Return procedure for VTVS3V3ASMF-M3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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