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Vishay General Semiconductor - Diodes Division VTVS3V3GSMF-M3-18
- Part No.:
- VTVS3V3GSMF-M3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS3V3GSMF-M3-18.pdf
- Description:
- TVS DIODE 3.3VWM 8.9VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:56,236
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Product details
Overview
VTVS3V3GSMF-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 I²C interfaces. It features a 3.3 V stand-off voltage (VRWM), ±2 % tolerance on breakdown voltage (6.57–6.84 V at IT = 1 mA), 8.9 V maximum clamping voltage at 43.99 A peak pulse current (10/1000 μs), and 2095 pF typical junction capacitance at 0 V.
For engineers reviewing the VTVS3V3GSMF-M3-18 datasheet, VTVS3V3GSMF-M3-18 pinout, VTVS3V3GSMF-M3-18 application, or VTVS3V3GSMF-M3-18 equivalent, this device delivers precise low-voltage clamping with IEC 61000-4-2 ±30 kV contact/air discharge compliance, AEC-Q101 qualification readiness, and halogen-free SOD-123W-compatible packaging for space-constrained automotive and industrial PCBs.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its 6.57–6.84 V breakdown range. Its 3.3 V VRWM ensures compatibility with 3.3 V logic rails while maintaining low leakage (<0.05 μA) below stand-off voltage.
The device achieves 400 W peak pulse power handling (10/1000 μs waveform) with 8.9 V clamping at 43.99 A, enabling robust protection against fast transients without affecting signal integrity in high-capacitance-sensitive applications like high-speed data lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 3.3 V - matches 3.3 V supply rails without false triggering during normal operation |
| Breakdown Voltage (VBR) | 6.57–6.84 V at IT = 1 mA, ±2 % tolerance - tight regulation enables predictable clamping onset |
| Clamping Voltage (VC) | 8.9 V at IPPM = 43.99 A (10/1000 μs) - limits downstream IC stress to safe levels during surge events |
| Peak Pulse Power (PPP) | 400 W - sustains high-energy transients common in automotive load-dump or ESD scenarios |
| Junction Capacitance (CD) | 2095 pF at VR = 0 V, f = 1 MHz - impacts high-speed signal integrity; suitable for ≤10 Mbps interfaces |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - exceeds Level 4 immunity requirements |
| Operating Temperature | −55 °C to +175 °C - supports under-hood automotive and industrial environments |
Pinout & Package
Package: SMF (DO-219AB), low-profile surface-mount case 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 overvoltage events |
| Cathode | Protected line terminal | Connected to protected signal or power line (e.g., USB D+, HDMI TMDS); conducts avalanche current to ground when VR > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Enables single-device protection against ISO 7637-2 Pulse 1/2a/5a surges in 12 V automotive systems |
| ±2 % VBR tolerance (G-grade) | Reduces design margin uncertainty vs. ±5 % A-grade variants, simplifying worst-case analysis |
| IEC 61000-4-2 ±30 kV ESD immunity | Eliminates need for secondary ESD components on exposed ports in consumer and industrial end-equipment |
| Halogen-free, RoHS-compliant, MSL Level 1 | Supports lead-free reflow assembly and long-term reliability in humid or high-temperature environments |
| AEC-Q101 qualification available | Validates robustness for automotive electronics including infotainment, ADAS sensors, and body control modules |
Applications
| USB 2.0 Data Lines | HDMI Hot-Plug Detection |
|---|---|
|
Use Scenario: Protecting D+ and D− lines against ESD events during cable insertion/removal in portable devices and docking stations. IC Role / Device Role: Unidirectional TVS clamp placed between data line and ground, responding within <1 ns to limit voltage excursion. Use Value: Maintains signal integrity up to 480 Mbps while suppressing ±30 kV contact discharges-prevents PHY latch-up or damage in USB controllers. |
Use Scenario: Safeguarding HDMI HPD (Hot-Plug Detect) pin from electrostatic discharge during display connection in TVs, monitors, and set-top boxes. IC Role / Device Role: Standoff-rated TVS connected between HPD and ground, holding 3.3 V logic level stable until sink detection occurs. Use Value: Prevents false hot-plug detection or HPD driver failure caused by ESD-induced voltage overshoot beyond 5.5 V absolute max ratings. |
| Automotive LIN Bus Nodes | Industrial I²C Sensor Interfaces |
|
Use Scenario: Protecting LIN transceiver inputs against load dump and coupled transients in vehicle door modules and seat controls. IC Role / Device Role: Low-capacitance unidirectional clamp on LIN bus line, referenced to chassis ground. Use Value: Withstands 400 W pulses while limiting clamped voltage to 8.9 V-keeps LIN PHY within 12 V absolute max rating and avoids communication disruption. |
Use Scenario: Shielding I²C SDA/SCL lines from ESD in factory automation sensors operating in noisy plant environments. IC Role / Device Role: Dual-channel (discrete) TVS pair placed on each bidirectional line, grounded via short trace. Use Value: 2095 pF capacitance adds minimal rise-time degradation at 100 kHz clock rates; ±30 kV air discharge immunity prevents firmware lockups during maintenance. |
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-E3/57T | ±5 % VBR tolerance (6.4–7.0 V), 200 W PPP, SMA package (DO-214AC) | Lower power rating and looser VBR tolerance; larger footprint than SMF | Select when cost sensitivity outweighs precision clamping and board space constraints |
| TPSMD3.3A | 400 W PPP, ±5 % VBR, same SMF package but no AEC-Q101 option or halogen-free certification | Lacks automotive qualification and environmental compliance documentation | Prefer for non-automotive industrial use where full Vishay compliance is not required |
Compared with SMAJ3.3A-E3/57T and TPSMD3.3A, VTVS3V3GSMF-M3-18 offers tighter ±2 % breakdown control, guaranteed halogen-free construction, and AEC-Q101 qualification path-making it optimal for next-generation automotive and high-reliability embedded designs where clamping predictability and supply-chain compliance are critical.
Availability
VTVS3V3GSMF-M3-18 is available at Aetrix Electronics and suitable for automotive infotainment, industrial sensor interfaces, and consumer USB/HDMI port protection requiring stable component supply across multi-year production cycles.
Supply support for VTVS3V3GSMF-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 GSMF series targets high-density, high-surge ESD protection in space-constrained applications-designed specifically for automotive AEC-Q101 compliance, low-profile PCB layouts, and stringent environmental certifications.
FAQ
What is the clamping voltage of VTVS3V3GSMF-M3-18 at its rated peak pulse current?
The VTVS3V3GSMF-M3-18 has a maximum reverse clamping voltage (VC) of 8.9 V at 43.99 A peak pulse current with a 10/1000 μs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The 8.9 V clamping ensures compatibility with 3.3 V ICs having absolute maximum ratings up to 12 V, making VTVS3V3GSMF-M3-18 suitable for safeguarding sensitive interface transceivers without overstressing their input stages.
Is VTVS3V3GSMF-M3-18 qualified to AEC-Q101?
VTVS3V3GSMF-M3-18 is offered in an AEC-Q101 qualified version (denoted by "H" in ordering code, e.g., VTVS3V3GSMF-HM3-18). The base part number VTVS3V3GSMF-M3-18 itself is built on the same die and process, and Vishay documents AEC-Q101 qualification as available for this family. Engineers selecting VTVS3V3GSMF-M3-18 for automotive applications should specify the H-suffix variant to receive certified test reports and PPAP documentation for VTVS3V3GSMF-M3-18.
How does the ±2 % VBR tolerance of VTVS3V3GSMF-M3-18 improve system-level surge margin?
The ±2 % breakdown voltage tolerance (VBR = 6.57–6.84 V) of VTVS3V3GSMF-M3-18 reduces variation in clamping onset compared to ±5 % variants, tightening the window between stand-off voltage (3.3 V) and clamping threshold. This allows designers to minimize safety margins in overvoltage protection circuits-enabling higher utilization of downstream IC voltage headroom and reducing risk of premature conduction during normal operation. For VTVS3V3GSMF-M3-18, this translates directly to more deterministic response in 3.3 V rail protection schemes.
Can VTVS3V3GSMF-M3-18 be used in bidirectional signal lines like RS-485?
No-VTVS3V3GSMF-M3-18 is a unidirectional TVS diode and must only be applied on lines referenced to ground with defined polarity, such as USB D+, HDMI HPD, or LIN bus. For bidirectional differential lines like RS-485, a symmetric dual-diode configuration or dedicated bidirectional TVS (e.g., VTVS3V3BxxGSMF) is required. Using VTVS3V3GSMF-M3-18 on a floating or AC-coupled line risks forward conduction during normal signal swings, potentially disrupting communication or damaging the diode.
What is the thermal resistance and maximum junction temperature rating of VTVS3V3GSMF-M3-18?
VTVS3V3GSMF-M3-18 has a thermal resistance RthJL of 20 K/W when mounted on an infinite heat sink, and a maximum junction temperature (TJ) rating of +175 °C. Its storage temperature range is −55 °C to +175 °C. These ratings enable reliable operation in under-hood automotive locations and industrial enclosures where ambient temperatures exceed 105 °C. The low RthJL supports effective heat dissipation during repetitive surge events, preserving long-term clamping performance in VTVS3V3GSMF-M3-18.
VTVS3V3GSMF-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):
- 6.57V
- Voltage - Clamping (Max) @ Ipp:
- 8.9V
- Current - Peak Pulse (10/1000µs):
- 43.99A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 2095pF @ 1MHz
- Operating Temperature:
- 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS3V3GSMF-M3-18 FAQ
1.How can I place an order for VTVS3V3GSMF-M3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS3V3GSMF-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 VTVS3V3GSMF-M3-18 reliable?
The price and inventory of VTVS3V3GSMF-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 VTVS3V3GSMF-M3-18 is usually 5 days.
3.What payment methods are accepted for VTVS3V3GSMF-M3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS3V3GSMF-M3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS3V3GSMF-M3-18?
VTVS3V3GSMF-M3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS3V3GSMF-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 VTVS3V3GSMF-M3-18?
For technical support, including VTVS3V3GSMF-M3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS3V3GSMF-M3-18 requirements.
6.How does Aetrix verify that VTVS3V3GSMF-M3-18 is sourced from the original manufacturer or authorized distributors?
All VTVS3V3GSMF-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 VTVS3V3GSMF-M3-18 meets industry standards.
7.What is the process for return or replacement of VTVS3V3GSMF-M3-18?
All VTVS3V3GSMF-M3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS3V3GSMF-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 VTVS3V3GSMF-M3-18 part is unused and in its original packaging.
Return procedure for VTVS3V3GSMF-M3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS3V3GSMF-M3-18 Tags
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