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Vishay General Semiconductor - Diodes Division VTVS31GSMF-M3-18
- Part No.:
- VTVS31GSMF-M3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS31GSMF-M3-18.pdf
- Description:
- TVS DIODE 30.6VWM 51VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,868
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Product details
Overview
VTVS31GSMF-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 30.6 V stand-off voltage (VRWM), ±2 % breakdown voltage tolerance (VBR = 35.28–36.72 V at IT = 1 mA), 7.74 A peak pulse current (10/1000 μs), and clamps to ≤51 V at rated IPPM.
For engineers reviewing the VTVS31GSMF-M3-18 datasheet, VTVS31GSMF-M3-18 pinout, VTVS31GSMF-M3-18 application, or VTVS31GSMF-M3-18 equivalent, key selection criteria include its IEC 61000-4-2 ±30 kV contact/air discharge rating, 380 pF capacitance at 0 V, 175 °C max junction temperature, and compatibility with SOD-123W footprint for space-constrained PCB layouts.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging avalanche breakdown to divert transient energy away from sensitive downstream circuitry. Its low clamping ratio (VC/VRWM ≈ 1.67) and fast response time-enabled by "Low-Noise" silicon technology-ensure robust protection for high-speed data lines without signal distortion.
The SMF package supports wave and reflow soldering per J-STD-020 MSL level 1, with thermal resistance RthJL = 20 K/W when mounted on an infinite heat sink. It is halogen-free, RoHS-compliant, and qualified to AEC-Q101 for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 30.6 V - maximum continuous reverse operating voltage before clamping begins |
| Breakdown Voltage (VBR) | 35.28–36.72 V at IT = 1 mA, ±2 % tolerance - precise triggering threshold for transient suppression |
| Peak Pulse Power (PPP) | 400 W at 10/1000 μs waveform - sustains high-energy surges without failure |
| Clamping Voltage (VC) | ≤51 V at IPPM = 7.74 A - limits voltage seen by protected ICs during worst-case transients |
| Capacitance (CD) | 380 pF at VR = 0 V, f = 1 MHz - compatible with USB 2.0 and CAN FD signal integrity requirements |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - exceeds industrial and automotive ESD immunity standards |
| Operating Temperature | −55 °C to +175 °C - supports under-hood automotive and industrial environments |
Pinout & Package
SMF (DO-219AB) low-profile surface-mount package: 3.9 mm × 1.9 mm × 1.08 mm body, cathode marked by bar on top surface. Compatible with SOD-123W, SOD-123F, and SOD-123FL footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path | Connected to ground or low-impedance reference plane to complete clamping loop |
| Cathode | Protected line connection | Connected directly to I/O line being safeguarded (e.g., USB D+, CAN_H); polarity-sensitive placement required |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Enables single-device protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges on 3.3–30 V rails |
| ±2 % VBR tolerance | Reduces design margin overhead vs. ±5 % variants, allowing tighter VRWM-to-VCC headroom in 3.3 V or 5 V systems |
| 380 pF capacitance | Minimizes signal rise-time degradation on 480 Mbps USB 2.0 lines while maintaining effective clamping |
| AEC-Q101 qualification | Validates reliability for automotive applications including body control modules and ADAS sensor interfaces |
| Halogen-free & RoHS | Meets global environmental compliance mandates without compromising thermal or electrical performance |
Applications
| Automotive Sensor Interface | USB 2.0 Port Protection |
|---|---|
|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between sensor signal line and chassis ground. Use Value: Clamps transients to ≤51 V while maintaining <1 ns response, preventing damage to 3.3 V ADC inputs and ensuring signal fidelity over 10+ year vehicle life. |
Use Scenario: Safeguarding USB 2.0 D+/D− lines in infotainment head units against ESD events during connector insertion. IC Role / Device Role / Timing Role: Low-capacitance TVS connected inline with differential data pairs, referenced to system ground. Use Value: 380 pF capacitance avoids eye diagram closure at 480 Mbps; ±30 kV ESD rating exceeds IEC 61000-4-2 requirements for consumer-facing ports. |
| Industrial CAN FD Node | Smart Meter Communication Port |
|
Use Scenario: Protecting CAN FD transceivers (e.g., TCAN1042) in factory automation gateways subjected to cable discharge events. IC Role / Device Role / Timing Role: Bidirectional protection not required; unidirectional VTVS31GSMF-M3-18 used on CAN_H line with ground-referenced clamp. Use Value: 30.6 V VRWM aligns with 24 V CAN FD supply rails; 400 W rating handles repetitive surges in noisy plant-floor environments. |
Use Scenario: Securing RS-485 or PLC communication ports in utility smart meters installed in outdoor enclosures. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between data line and earth ground to shunt lightning-induced surges. Use Value: 175 °C max junction temperature ensures operation in sealed, thermally isolated meter housings; halogen-free construction meets UL/cUL safety standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33A-E3/57T | ±5 % VBR tolerance (35.2–38.8 V), 33 V VRWM, 400 W, SMA package (larger footprint) | Higher VBR variation increases design margin requirement; SMA package occupies ~2.5× board area vs. SMF | Select when legacy SMA layout exists or cost sensitivity outweighs size constraints |
| TPSMD33A | ±5 % VBR, 33 V VRWM, 400 W, same SMF package but no AEC-Q101 qualification | Lacks automotive qualification; lower ESD rating (±25 kV) and higher capacitance (450 pF) | Prefer for industrial non-automotive use where AEC-Q101 and full ±30 kV ESD are not mandated |
Compared with SMAJ33A-E3/57T and TPSMD33A, VTVS31GSMF-M3-18 delivers tighter voltage tolerance, smaller footprint, and automotive-grade reliability-making it optimal for next-gen compact, high-reliability designs where precision clamping and space efficiency are critical.
Availability
VTVS31GSMF-M3-18 is available at Aetrix Electronics and suitable for automotive sensor interfaces, USB 2.0 port protection, and industrial CAN FD nodes requiring stable component supply across multi-year production cycles.
Supply support for VTVS31GSMF-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.
VTVS31GSMF-M3-18 belongs to Vishay's TransZorb® eSMP® Series, engineered specifically for high-power-density, low-capacitance transient suppression in space-constrained and mission-critical applications.
FAQ
What is the clamping voltage of VTVS31GSMF-M3-18 at its rated peak pulse current?
The VTVS31GSMF-M3-18 clamps to a maximum of 51 V when subjected to its rated peak pulse current of 7.74 A (10/1000 μs waveform). This clamping voltage is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The VTVS31GSMF-M3-18 maintains this performance across its full operating temperature range of −55 °C to +175 °C.
Is VTVS31GSMF-M3-18 suitable for protecting high-speed data lines like USB 2.0?
Yes, VTVS31GSMF-M3-18 is suitable for USB 2.0 protection due to its 380 pF capacitance at 0 V and 1 MHz, which minimizes signal integrity impact on 480 Mbps differential signaling. Its unidirectional configuration and 30.6 V VRWM allow placement on individual D+ or D− lines without affecting common-mode voltage. The VTVS31GSMF-M3-18 also meets IEC 61000-4-2 ±30 kV ESD requirements for end-user accessible ports.
Does VTVS31GSMF-M3-18 have automotive qualification?
Yes, VTVS31GSMF-M3-18 is AEC-Q101 qualified, confirming its suitability for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. This qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and ESD-ensuring long-term reliability in harsh vehicular environments. The VTVS31GSMF-M3-18 achieves this while retaining the same electrical specs and SMF package as non-qualified variants.
What is the package type and mounting compatibility of VTVS31GSMF-M3-18?
VTVS31GSMF-M3-18 uses the SMF (DO-219AB) package: 3.9 mm × 1.9 mm × 1.08 mm, with cathode indicated by a bar marking. It is fully compatible with SOD-123W, SOD-123F, and SOD-123FL footprints and supports both wave and reflow soldering per J-STD-020 MSL level 1. The VTVS31GSMF-M3-18 requires no special stencil or thermal profile adjustments beyond standard lead-free reflow guidelines.
How does the ±2 % VBR tolerance of VTVS31GSMF-M3-18 benefit circuit design?
With ±2 % VBR tolerance (35.28–36.72 V), VTVS31GSMF-M3-18 enables tighter design margins compared to ±5 % variants-reducing overvoltage risk during normal operation while ensuring reliable clamping during transients. This precision allows safer operation near 3.3 V or 5 V rail limits and simplifies system-level validation. The VTVS31GSMF-M3-18 achieves this without sacrificing power rating, clamping performance, or package size.
VTVS31GSMF-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):
- 30.6V
- Voltage - Breakdown (Min):
- 35.28V
- Voltage - Clamping (Max) @ Ipp:
- 51V
- Current - Peak Pulse (10/1000µs):
- 7.74A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 380pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS31GSMF-M3-18 FAQ
1.How can I place an order for VTVS31GSMF-M3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS31GSMF-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 VTVS31GSMF-M3-18 reliable?
The price and inventory of VTVS31GSMF-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 VTVS31GSMF-M3-18 is usually 5 days.
3.What payment methods are accepted for VTVS31GSMF-M3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS31GSMF-M3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS31GSMF-M3-18?
VTVS31GSMF-M3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS31GSMF-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 VTVS31GSMF-M3-18?
For technical support, including VTVS31GSMF-M3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS31GSMF-M3-18 requirements.
6.How does Aetrix verify that VTVS31GSMF-M3-18 is sourced from the original manufacturer or authorized distributors?
All VTVS31GSMF-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 VTVS31GSMF-M3-18 meets industry standards.
7.What is the process for return or replacement of VTVS31GSMF-M3-18?
All VTVS31GSMF-M3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS31GSMF-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 VTVS31GSMF-M3-18 part is unused and in its original packaging.
Return procedure for VTVS31GSMF-M3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS31GSMF-M3-18 Tags
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