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Vishay General Semiconductor - Diodes Division VTVS11ASMF-M3-18
- Part No.:
- VTVS11ASMF-M3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS11ASMF-M3-18.pdf
- Description:
- TVS DIODE 11.2VWM 18VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,962
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Product details
Overview
VTVS11ASMF-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 11.2 V maximum stand-off voltage (VRWM), 12.6–13.9 V reverse breakdown voltage (VBR) at 1 mA, and clamps to ≤18.0 V at 21.13 A peak pulse current (10/1000 μs), making it suitable for protecting USB, HDMI, and automotive sensor interfaces.
For engineers reviewing the VTVS11ASMF-M3-18 datasheet, VTVS11ASMF-M3-18 pinout, VTVS11ASMF-M3-18 application, or VTVS11ASMF-M3-18 equivalent, key selection criteria include its ±5 % VBR tolerance, 910 pF typical junction capacitance at 0 V, IEC 61000-4-2 ±30 kV contact/air discharge rating, and AEC-Q101 qualification readiness - all critical for high-reliability industrial and automotive signal line protection.
Technical Context
This device operates as a unidirectional avalanche diode, leveraging silicon planar technology to deliver fast response (<1 ns) clamping during transients. Its thermal resistance (RthJL = 20 K/W) and 175 °C max junction temperature support sustained operation in thermally constrained PCB layouts.
The SMF package enables wave and reflow soldering compatibility with SOD-123W footprint alignment, while its halogen-free molding compound and MSL level 1 rating ensure robust manufacturability and environmental compliance per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400 W (10/1000 μs waveform; defines maximum transient energy absorption capability) |
| Stand-off Voltage (VRWM) | 11.2 V (maximum continuous reverse voltage before significant leakage; sets operating voltage ceiling) |
| Breakdown Voltage (VBR) | 12.6–13.9 V at IT = 1 mA (avalanche onset range; determines turn-on threshold under ESD stress) |
| Clamping Voltage (VC) | ≤18.0 V at IPPM = 21.13 A (voltage seen by protected circuit during worst-case surge; limits downstream stress) |
| Junction Capacitance (CD) | 910 pF at VR = 0 V, f = 1 MHz (dominant signal-line loading effect; impacts high-speed interface integrity) |
| ESD Rating | ±30 kV contact / ±30 kV air (IEC 61000-4-2 Level 4; qualifies for direct human-contact exposed ports) |
| Operating Temperature | −55 °C to +175 °C (enables deployment in under-hood automotive and industrial control environments) |
Pinout & Package
Package: SMF (DO-219AB), low-profile surface-mount case with cathode bar marking; dimensions 3.9 mm × 1.9 mm × 1.08 mm; compatible with SOD-123W footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry during forward conduction; tied to protected line ground or low-side reference | Connects to system ground or return path; forms clamping loop with cathode during transient |
| Cathode | Current exit during reverse-biased clamping; connects to protected signal line | Attached to vulnerable I/O trace; conducts surge current to ground when VR > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Enables robust protection against ISO 7637-2 Load Dump surges and IEC 61000-4-5 indirect lightning transients |
| ±5 % VBR tolerance | Ensures predictable clamping margin above VRWM while minimizing overdesign of protected IC's absolute maximum ratings |
| Low-noise fast-response technology | Sub-nanosecond response time prevents transient energy from propagating past the diode into sensitive circuitry |
| AEC-Q101 qualification available | Supports automotive-grade reliability requirements including HTOL, TCT, and ESD stress testing per AEC standard |
| Halogen-free, MSL level 1 packaging | Eliminates moisture-related popcorning risk during reflow and meets RoHS/halogen-free compliance mandates |
Applications
| Automotive Sensor Interface | USB 2.0 Data Lines |
|---|---|
Use Scenario: Protecting LIN/CAN node sensors (e.g., temperature, pressure) from battery load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor signal line and chassis ground to clamp induced surges. Use Value: Limits voltage excursion to ≤18.0 V, preventing damage to 12 V-rated analog front-end amplifiers and ADC inputs. |
Use Scenario: ESD protection on D+ and D− lines of USB 2.0 host/device ports exposed to user handling. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS (cathode-to-signal) providing low-capacitance surge shunting. Use Value: 910 pF capacitance avoids signal integrity degradation while passing ±30 kV IEC 61000-4-2 ESD immunity. |
| HDMI Source Port Protection | Industrial RS-485 Transceiver Line |
Use Scenario: Guarding HDMI TMDS clock and data channels against electrostatic discharge during cable insertion. IC Role / Device Role / Timing Role: Discrete unidirectional TVS mounted adjacent to connector pins to minimize inductance in clamping path. Use Value: Fast clamping ensures <1 ns response preserves HDMI 1.4/2.0 eye diagram integrity under ESD stress. |
Use Scenario: Safeguarding RS-485 transceiver A/B differential lines in factory automation networks subject to ground potential differences. IC Role / Device Role / Timing Role: Dual unidirectional TVS (one per line) referenced to local ground to absorb common-mode surges. Use Value: 400 W power rating handles repetitive 10/1000 μs surges up to 21.13 A without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ11A | Same VRWM (11 V), but higher VC (≤18.2 V), lower PPPM (400 W), and larger SMA package (DO-214AC) | Less space-constrained designs; not optimized for ultra-low-profile PCBs | Select when board height budget allows SMA and legacy footprint reuse is prioritized |
| SMF11A | Identical SMF package and VRWM, but ±10 % VBR tolerance (vs. ±5 % for VTVS11ASMF-M3-18) and no AEC-Q101 option | Cost-sensitive consumer electronics where tighter VBR control and automotive qualification are unnecessary | Choose for non-automotive applications requiring same footprint but lower cost and relaxed VBR spec |
Compared with SMAJ11A and SMF11A, VTVS11ASMF-M3-18 delivers tighter ±5 % VBR tolerance and AEC-Q101 qualification readiness within the same compact SMF outline - enabling higher design margin in automotive and industrial signal protection without layout change.
Availability
VTVS11ASMF-M3-18 is available at Aetrix Electronics and suitable for automotive sensor interfaces, USB 2.0 ports, HDMI source protection, and industrial RS-485 transceivers requiring stable component supply across long production lifecycles.
Supply support for VTVS11ASMF-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-reliability transient suppression in space-constrained applications - engineered specifically for ESD and surge resilience in automotive electronics and industrial communication interfaces.
FAQ
What is the maximum clamping voltage of the VTVS11ASMF-M3-18 under peak pulse conditions?
The VTVS11ASMF-M3-18 has a maximum reverse clamping voltage (VC) of 18.0 V when subjected to its rated peak pulse current of 21.13 A (10/1000 μs waveform). This value is measured per the Electrical Characteristics table in Vishay Document 85891 and defines the upper voltage limit imposed on the protected circuit during surge events. The VTVS11ASMF-M3-18 maintains this clamping performance across its full operating temperature range.
Is the VTVS11ASMF-M3-18 qualified to AEC-Q101?
The VTVS11ASMF-M3-18 is part of the AEC-Q101-qualified eSMP® Series, with qualification explicitly stated in Vishay's documentation for the VTVS family. While the base part number does not embed "Q" in its suffix, the datasheet confirms AEC-Q101 qualification is available for this variant. Engineers must verify qualification status via Vishay's official product change notices or distributor certifications before automotive deployment. The VTVS11ASMF-M3-18 meets all required stress tests including HTOL and temperature cycling.
What is the junction capacitance of the VTVS11ASMF-M3-18 and how does it affect high-speed interfaces?
The VTVS11ASMF-M3-18 exhibits a typical junction capacitance (CD) of 910 pF at VR = 0 V and f = 1 MHz. This capacitance appears in parallel with the protected signal line and directly loads high-speed interfaces like USB 2.0 or HDMI TMDS. Though relatively high versus specialized low-C TVS devices, it remains acceptable for sub-480 Mbps USB 2.0 and HDMI 1.4 clock/data channels when placed with minimal trace length. The VTVS11ASMF-M3-18 balances clamping robustness and signal integrity for cost-sensitive, medium-speed applications.
Can the VTVS11ASMF-M3-18 be used in bidirectional protection configurations?
No - the VTVS11ASMF-M3-18 is a unidirectional TVS diode, designed only for clamping positive transients relative to its cathode. For true bidirectional protection (e.g., AC-coupled lines or symmetric surges), two VTVS11ASMF-M3-18 devices must be connected anode-to-anode or a dedicated bidirectional TVS such as VTVS11B must be selected. Using a single VTVS11ASMF-M3-18 in reverse bias risks catastrophic failure if negative surges exceed its forward voltage rating of 1.8 V. Always confirm polarity alignment in schematic placement of the VTVS11ASMF-M3-18.
What is the recommended PCB footprint and soldering profile for the VTVS11ASMF-M3-18?
The VTVS11ASMF-M3-18 uses the SMF (DO-219AB) package with recommended footprint dimensions of 2.9 mm × 1.4 mm pad length/width and 1.3 mm pad spacing per Vishay's S8-V-3915.01-001 specification. It supports both wave and reflow soldering, with peak reflow temperature limited to 260 °C (MSL level 1). The VTVS11ASMF-M3-18 requires no pre-baking and is compatible with standard lead-free SAC305 profiles. Ensure cathode bar orientation aligns with silkscreen polarity marking during placement.
VTVS11ASMF-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):
- 11.2V
- Voltage - Breakdown (Min):
- 12.6V
- Voltage - Clamping (Max) @ Ipp:
- 18V
- Current - Peak Pulse (10/1000µs):
- 21.13A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 910pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS11ASMF-M3-18 FAQ
1.How can I place an order for VTVS11ASMF-M3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS11ASMF-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 VTVS11ASMF-M3-18 reliable?
The price and inventory of VTVS11ASMF-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 VTVS11ASMF-M3-18 is usually 5 days.
3.What payment methods are accepted for VTVS11ASMF-M3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS11ASMF-M3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS11ASMF-M3-18?
VTVS11ASMF-M3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS11ASMF-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 VTVS11ASMF-M3-18?
For technical support, including VTVS11ASMF-M3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS11ASMF-M3-18 requirements.
6.How does Aetrix verify that VTVS11ASMF-M3-18 is sourced from the original manufacturer or authorized distributors?
All VTVS11ASMF-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 VTVS11ASMF-M3-18 meets industry standards.
7.What is the process for return or replacement of VTVS11ASMF-M3-18?
All VTVS11ASMF-M3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS11ASMF-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 VTVS11ASMF-M3-18 part is unused and in its original packaging.
Return procedure for VTVS11ASMF-M3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS11ASMF-M3-18 Tags
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