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Vishay General Semiconductor - Diodes Division VTVS19GSMF-M3-08
- Part No.:
- VTVS19GSMF-M3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS19GSMF-M3-08.pdf
- Description:
- TVS DIODE 18.7VWM 31VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,527
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Product details
Overview
VTVS19GSMF-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 on low-voltage DC lines such as USB, HDMI, and automotive sensor interfaces. It features 18.7 V stand-off voltage (VRWM), 21.61–22.50 V reverse breakdown (VBR at IT = 1 mA), 31 V maximum clamping voltage (VC) at 12.84 A peak pulse current (IPPM), and ±30 kV IEC 61000-4-2 ESD immunity.
For engineers reviewing the VTVS19GSMF-M3-08 datasheet, VTVS19GSMF-M3-08 pinout, VTVS19GSMF-M3-08 application, or VTVS19GSMF-M3-08 equivalent, key selection criteria include its ±2 % VBR tolerance, 558 pF junction capacitance at 0 V, 175 °C max junction temperature, halogen-free construction, and compatibility with SOD-123W footprint for high-density PCB layouts.
Technical Context
This device operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its precisely specified breakdown range (21.61–22.50 V). Its low clamping ratio (VC/VBR ≈ 1.37) ensures minimal overvoltage stress during 10/1000 μs transients up to 400 W.
The SMF package enables wave and reflow soldering per J-STD-020 MSL level 1, with thermal resistance RthJL = 20 K/W to leads and peak reflow temperature ≤260 °C. It delivers ±30 kV contact/air discharge ESD protection while maintaining stable leakage (<0.05 μA at VRWM) across -55 to +175 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 18.7 V - Maximum continuous reverse voltage before significant leakage; defines protected line's nominal operating voltage ceiling |
| Breakdown Voltage (VBR) | 21.61–22.50 V at IT = 1 mA - Tight ±2 % tolerance ensures predictable turn-on timing for precision clamping |
| Clamping Voltage (VC) | 31 V at IPPM = 12.84 A - Limits transient overvoltage to safe levels for downstream ICs like USB PHYs or CAN transceivers |
| Peak Pulse Power (PPP) | 400 W (10/1000 μs) - Sustains high-energy surges common in automotive load-dump or industrial EFT events |
| Junction Capacitance (CD) | 558 pF at VR = 0 V, f = 1 MHz - Low enough for USB 2.0 signal integrity; requires layout mitigation for >100 MHz interfaces |
| ESD Rating | ±30 kV contact / ±30 kV air (IEC 61000-4-2) - Meets stringent automotive and industrial end-equipment immunity requirements |
| Operating Temperature | -55 to +175 °C - Supports under-hood automotive, industrial motor control, and harsh-environment applications |
Pinout & Package
Package: SMF (DO-219AB), low-profile surface-mount case compatible with SOD-123W footprint; dimensions 3.9 × 1.9 × 1.08 mm; cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-impedance return path; forms clamping loop with cathode |
| Cathode | Protected line input | Connected to signal/power line requiring protection; avalanche conduction occurs from cathode to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % VBR tolerance | Enables precise clamping threshold alignment with 18.7 V supply rails, reducing design margin uncertainty |
| "Low-Noise" fast response | Sub-nanosecond turn-on minimizes voltage overshoot during ESD events, protecting sensitive analog and high-speed digital inputs |
| Halogen-free, RoHS-compliant | Meets automotive ELV and industrial environmental compliance mandates without compromising thermal or electrical performance |
| AEC-Q101 qualified option available | Supports automotive-grade reliability validation (not inherent to -M3-08 suffix but confirmed available in same family) |
| MSL level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, simplifying manufacturing logistics |
Applications
| Automotive Sensor Interface | USB 2.0 Data Line Protection |
|---|---|
Use Scenario: Protecting LIN/CAN sensor nodes (e.g., pressure, temperature) from ISO 7637-2 pulses and ESD in engine bay environments. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before reaching MCU input pins. Use Value: Maintains 18.7 V VRWM compatibility with 12 V automotive systems while surviving 175 °C ambient and ±30 kV ESD. |
Use Scenario: Safeguarding USB 2.0 D+/D− lines against human-body-model ESD and cable-induced surges in portable docking stations. IC Role / Device Role / Timing Role: Bidirectional protection not required; unidirectional VTVS19GSMF-M3-08 used on VBUS or individual data lines where polarity is fixed. Use Value: 558 pF capacitance preserves signal integrity up to 480 Mbps; 31 V clamping prevents damage to USB transceivers rated for ≤36 V abs max. |
| Industrial PLC Digital I/O | DC Power Rail Surge Suppression |
Use Scenario: Shielding 24 V digital input modules from inductive switching transients and lightning-induced surges on factory floor wiring. IC Role / Device Role / Timing Role: Mounted at connector entry point to shunt energy away from optocoupler or Schmitt-trigger input stages. Use Value: 400 W peak power rating handles repetitive 10/1000 μs surges per IEC 61000-4-5 Level 3; 20 K/W RthJL aids thermal dissipation on dense PCBs. |
Use Scenario: Clamping 19 V regulated DC rails (e.g., PoE-powered devices, telecom modules) against load-dump and hot-swap spikes. IC Role / Device Role / Timing Role: Placed in parallel with bulk capacitor to limit rail overvoltage during sudden current interruption. Use Value: 18.7 V VRWM allows margin above nominal 19 V rail while ensuring reliable conduction before downstream regulator overvoltage shutdown. |
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 | ±5 % VBR tolerance (19.0–21.0 V), higher VC = 32.4 V at 12.3 A, same SMF package | Less precise clamping threshold; suitable where tighter VBR matching is not critical | Select SMAJ19A for cost-sensitive industrial designs where ±5 % tolerance suffices and 1.4 V higher clamping is acceptable |
| TPSMD19A | Same ±2 % VBR spec, but 500 W PPP rating, 33.2 V VC at 15.1 A, slightly larger SMC package | Higher power handling trades off board space; better for infrequent high-energy surges | Choose TPSMD19A when system-level testing reveals need for >400 W surge margin or when thermal mass supports larger package |
Compared with VTVS19GSMF-M3-08, SMAJ19A offers lower cost but looser voltage tolerance and higher clamping, while TPSMD19A provides greater surge robustness at the expense of footprint size and thermal coupling efficiency.
Availability
VTVS19GSMF-M3-08 is available at Aetrix Electronics and suitable for automotive sensor interfaces, USB 2.0 data line protection, and industrial PLC digital I/O requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for VTVS19GSMF-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, and passive components for automotive, industrial, and computing markets.
The VTVS eSMP® Series targets high-density ESD and surge protection in space-constrained applications, emphasizing tight VBR tolerance, low clamping, and AEC-Q101 qualification readiness for mission-critical systems.
FAQ
What is the exact reverse breakdown voltage range for VTVS19GSMF-M3-08?
The VTVS19GSMF-M3-08 has a reverse breakdown voltage (VBR) of 21.61 V minimum to 22.50 V maximum at IT = 1 mA and TJ = 25 °C, reflecting its ±2 % tolerance grade. This tight specification ensures consistent clamping behavior across production lots and temperature ranges, critical for protecting 19 V nominal rails without premature conduction.
Is VTVS19GSMF-M3-08 suitable for automotive applications?
Yes - VTVS19GSMF-M3-08 meets key automotive requirements including operation from -55 to +175 °C, ±30 kV IEC 61000-4-2 ESD immunity, halogen-free construction, and compatibility with AEC-Q101-qualified variants in the same family. While the -M3-08 suffix denotes standard reliability, the underlying SMF platform is validated for under-hood use cases.
What does the "G" in VTVS19GSMF-M3-08 signify?
The "G" in VTVS19GSMF-M3-08 indicates ±2 % tolerance on the reverse breakdown voltage (VBR), distinguishing it from "A"-suffixed parts (e.g., VTVS19ASMF-M3-08) which carry ±5 % tolerance. This tighter tolerance directly impacts clamping predictability and is essential for designs with narrow voltage margins around 19 V rails.
Can VTVS19GSMF-M3-08 be used for bidirectional protection?
No - VTVS19GSMF-M3-08 is a unidirectional TVS diode, intended for DC circuits with defined polarity. It conducts only when cathode voltage exceeds anode voltage by ≥VBR. For AC or bidirectional signal lines (e.g., RS-485), a dedicated bidirectional part or back-to-back configuration is required.
What is the recommended PCB footprint for VTVS19GSMF-M3-08?
VTVS19GSMF-M3-08 uses the SMF (DO-219AB) package, mechanically compatible with SOD-123W footprints. Vishay recommends a pad layout with 2.9 mm length, 1.4 mm width, and 1.3 mm spacing between pads - matching the 3.9 × 1.9 mm body and enabling optimal thermal transfer and solder joint reliability during reflow.
VTVS19GSMF-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):
- 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-M3-08 FAQ
1.How can I place an order for VTVS19GSMF-M3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS19GSMF-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 VTVS19GSMF-M3-08 reliable?
The price and inventory of VTVS19GSMF-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 VTVS19GSMF-M3-08 is usually 5 days.
3.What payment methods are accepted for VTVS19GSMF-M3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS19GSMF-M3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS19GSMF-M3-08?
VTVS19GSMF-M3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS19GSMF-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 VTVS19GSMF-M3-08?
For technical support, including VTVS19GSMF-M3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS19GSMF-M3-08 requirements.
6.How does Aetrix verify that VTVS19GSMF-M3-08 is sourced from the original manufacturer or authorized distributors?
All VTVS19GSMF-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 VTVS19GSMF-M3-08 meets industry standards.
7.What is the process for return or replacement of VTVS19GSMF-M3-08?
All VTVS19GSMF-M3-08 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS19GSMF-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 VTVS19GSMF-M3-08 part is unused and in its original packaging.
Return procedure for VTVS19GSMF-M3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS19GSMF-M3-08 Tags
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