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Vishay General Semiconductor - Diodes Division VTVS19GSMF-M3-18
- Part No.:
- VTVS19GSMF-M3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS19GSMF-M3-18.pdf
- Description:
- TVS DIODE 18.7VWM 31VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,436
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Product details
Overview
VTVS19GSMF-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 on low-voltage DC lines such as USB, HDMI, and automotive sensor interfaces. It features 18.7 V maximum stand-off voltage (VRWM), 21.61–22.50 V reverse breakdown voltage (VBR) at 1 mA, and clamps to ≤31 V at 12.84 A peak pulse current (10/1000 μs).
For engineers reviewing the VTVS19GSMF-M3-18 datasheet, VTVS19GSMF-M3-18 pinout, VTVS19GSMF-M3-18 application, or VTVS19GSMF-M3-18 equivalent, this device is selected for high-reliability IEC 61000-4-2 ±30 kV contact/air discharge compliance, low 558 pF capacitance at 0 V, and AEC-Q101 qualification - critical for automotive infotainment and ADAS signal line protection.
Technical Context
This TVS diode operates as a unidirectional clamping device with avalanche breakdown behavior, triggered when reverse voltage exceeds VRWM = 18.7 V. Its low 558 pF junction capacitance minimizes signal distortion on high-speed data lines up to ~100 MHz, while thermal resistance RthJL = 20 K/W enables robust 400 W pulse handling under short-duration transients.
The SMF (DO-219AB) package supports wave and reflow soldering per J-STD-020 MSL level 1, with peak temperature rating of 260 °C. It is halogen-free, RoHS-compliant, and qualified to AEC-Q101 for automotive-grade reliability across -55 °C to +175 °C junction temperature range.
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 pulses) |
| Stand-off Voltage (VRWM) | 18.7 V (maximum continuous reverse working voltage before leakage exceeds 0.05 μA) |
| Breakdown Voltage (VBR) | 21.61–22.50 V at IT = 1 mA (±2 % tolerance ensures tight clamping threshold control) |
| Clamping Voltage (VC) | ≤31 V at IPPM = 12.84 A (limits downstream IC stress during 10/1000 μs surges) |
| Junction Capacitance (CD) | 558 pF at VR = 0 V, f = 1 MHz (enables use on USB 2.0 and CAN FD signal lines without bandwidth loss) |
| ESD Rating | ±30 kV contact / ±30 kV air (IEC 61000-4-2 Level 4; eliminates need for external ESD staging) |
| Operating Temperature | -55 °C to +175 °C (supports under-hood automotive and industrial power supply rail protection) |
Pinout & Package
Package: SMF (DO-219AB), surface-mount, low-profile (1.08 mm height), halogen-free molding compound, UL 94 V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (cathode-bar side) | Ground reference terminal | Connected to system ground; forms low-impedance path for transient current return |
| Cathode (marked with bar) | Protected line input | Connected to I/O line (e.g., USB D+); conducts avalanche current when VR > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Handles ISO 7637-2 Pulse 1/2a/5a surges without degradation in automotive ECUs |
| ±2 % VBR tolerance (G-series) | Enables precise clamping margin design for 19 V nominal rails (e.g., camera power, radar sensors) |
| 558 pF capacitance | Preserves signal integrity on 480 Mbps USB 2.0 lines with <1% rise-time degradation |
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS modules |
| Low-noise fast response | Sub-nanosecond turn-on time prevents ESD-induced latch-up in sensitive CMOS receivers |
Applications
| Automotive Camera Interface | USB 2.0 Port Protection |
|---|---|
Use Scenario: Protecting MIPI CSI-2 differential pairs in rear-view or surround-view cameras exposed to ESD during service and load-dump transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between connector and serializer IC input pins. Use Value: 558 pF capacitance avoids skew between D+/D− lines; 31 V clamping prevents damage to 1.8 V/3.3 V serializer inputs. |
Use Scenario: Safeguarding upstream/downstream USB 2.0 data lines against hot-plug ESD and cable-induced surges. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected anode-to-ground, cathode-to-D+/D− lines. Use Value: ±30 kV IEC 61000-4-2 rating meets USB-IF compliance; low capacitance maintains 480 Mbps eye diagram integrity. |
| Industrial Sensor Signal Line | Automotive LIN Bus Node |
Use Scenario: Shielding 0–10 V analog outputs or RS-485 transceivers in factory automation equipment from lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on signal path, positioned before protection resistor and input buffer. Use Value: 400 W pulse rating absorbs multi-kV transients; 175 °C max junction temperature supports operation near motor drives. |
Use Scenario: Protecting LIN transceiver pins (e.g., TJA1020) in door modules and seat controllers from battery disconnect spikes and ESD. IC Role / Device Role / Timing Role: Unidirectional TVS tied between LIN bus line and chassis ground. Use Value: 18.7 V VRWM aligns with 12 V automotive system; AEC-Q101 qualification ensures lifetime reliability in harsh environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ19A-E3/5A (Vishay) | Same VRWM (19 V), but ±5 % VBR tolerance; SMA package (DO-214AC), larger footprint (4.5 × 2.7 mm) | Higher 600 W PPPM, but 1.5× higher capacitance (750 pF); less suitable for USB/high-speed lines | Select for cost-sensitive industrial designs where board space allows and speed is not critical. |
| TPSMF19A (ON Semiconductor) | Identical VRWM (19 V), ±5 % VBR, same SMF package; slightly lower clamping (30.5 V vs. 31 V) and higher capacitance (600 pF) | Not AEC-Q101 qualified; rated only to TJ = 150 °C - unsuitable for under-hood automotive use | Use in consumer or industrial non-automotive systems where AEC-Q101 is not mandated. |
Compared with VTVS19GSMF-M3-18, SMAJ19A-E3/5A offers higher surge capacity but sacrifices high-speed compatibility, while TPSMF19A matches form factor but lacks automotive qualification and has reduced thermal margin - making VTVS19GSMF-M3-18 the optimal choice for AEC-Q101–required, high-bandwidth protection.
Availability
VTVS19GSMF-M3-18 is available at Aetrix Electronics and suitable for automotive camera modules, USB 2.0 interface protection, and industrial sensor signal conditioning requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for VTVS19GSMF-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 passive and protection components for automotive, industrial, and computing markets.
The VTVS-G series targets automotive-grade transient suppression, engineered specifically for AEC-Q101 compliance, low capacitance, and precise ±2 % VBR tolerance to meet stringent signal-integrity and safety requirements in modern vehicle electronics.
FAQ
What is the clamping voltage of VTVS19GSMF-M3-18 at its rated peak pulse current?
The VTVS19GSMF-M3-18 clamps to a maximum of 31 V at its rated peak pulse current of 12.84 A (10/1000 μs waveform). This value is specified in the Electrical Characteristics table of Vishay's document 85891 and ensures protected circuits remain below safe voltage thresholds during surge events. The clamping performance is validated across the full operating temperature range of -55 °C to +175 °C, and VTVS19GSMF-M3-18 maintains this specification under repeated transient stress.
Is VTVS19GSMF-M3-18 qualified for automotive applications?
Yes, VTVS19GSMF-M3-18 is AEC-Q101 qualified, as confirmed in Vishay's official documentation (Rev. 2.2, 19-Nov-2021, Doc. #85891). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD robustness, making VTVS19GSMF-M3-18 suitable for under-hood and cabin modules. Its 175 °C maximum junction temperature and halogen-free, RoHS-compliant construction further support automotive deployment, and VTVS19GSMF-M3-18 is commonly used in LIN, CAN, and camera power line protection.
How does the ±2 % VBR tolerance of VTVS19GSMF-M3-18 improve circuit protection design?
The ±2 % VBR tolerance (denoted by the "G" suffix) tightens the reverse breakdown window to 21.61–22.50 V, enabling more accurate margining between VRWM (18.7 V) and clamping onset. This reduces uncertainty in worst-case overvoltage triggering, allowing designers to place VTVS19GSMF-M3-18 closer to sensitive ICs without risk of premature conduction. Compared to ±5 % variants, VTVS19GSMF-M3-18 provides superior predictability in 12 V/24 V automotive systems where rail tolerances are narrow and protection timing is critical.
Can VTVS19GSMF-M3-18 be used on high-speed data lines like USB 2.0?
Yes, VTVS19GSMF-M3-18 is explicitly suited for USB 2.0 due to its low 558 pF junction capacitance at 0 V and 1 MHz, which introduces negligible signal attenuation or timing skew on 480 Mbps differential pairs. Its unidirectional configuration avoids forward-bias interference, and the SMF package's small footprint (3.9 × 1.9 mm) enables placement directly at connectors. Verified performance in Vishay's typical characteristics plots confirms minimal impact on eye diagrams, making VTVS19GSMF-M3-18 a preferred choice for high-fidelity data line protection.
What is the thermal resistance and maximum power dissipation capability of VTVS19GSMF-M3-18?
VTVS19GSMF-M3-18 has a thermal resistance RthJL of 20 K/W when mounted on an infinite heat sink, supporting its 400 W peak pulse power rating under 10/1000 μs conditions. While it is not rated for continuous power dissipation, its low thermal mass enables rapid energy absorption and self-cooling between transient events. The 1.08 mm profile and copper leadframe facilitate efficient heat transfer to PCB copper pours, and VTVS19GSMF-M3-18 maintains full specification compliance across its -55 °C to +175 °C operating range without derating.
VTVS19GSMF-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):
- 18.7V
- Voltage - Breakdown (Min):
- 21.61V
- Voltage - Clamping (Max) @ Ipp:
- 31V
- Current - Peak Pulse (10/1000µs):
- 12.84A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 558pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS19GSMF-M3-18 FAQ
1.How can I place an order for VTVS19GSMF-M3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS19GSMF-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 VTVS19GSMF-M3-18 reliable?
The price and inventory of VTVS19GSMF-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 VTVS19GSMF-M3-18 is usually 5 days.
3.What payment methods are accepted for VTVS19GSMF-M3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS19GSMF-M3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS19GSMF-M3-18?
VTVS19GSMF-M3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS19GSMF-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 VTVS19GSMF-M3-18?
For technical support, including VTVS19GSMF-M3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS19GSMF-M3-18 requirements.
6.How does Aetrix verify that VTVS19GSMF-M3-18 is sourced from the original manufacturer or authorized distributors?
All VTVS19GSMF-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 VTVS19GSMF-M3-18 meets industry standards.
7.What is the process for return or replacement of VTVS19GSMF-M3-18?
All VTVS19GSMF-M3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS19GSMF-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 VTVS19GSMF-M3-18 part is unused and in its original packaging.
Return procedure for VTVS19GSMF-M3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS19GSMF-M3-18 Tags
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