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Vishay General Semiconductor - Diodes Division VTVS3V3GSMF-HM3-18
- Part No.:
- VTVS3V3GSMF-HM3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS3V3GSMF-HM3-18.pdf
- Description:
- TVS DIODE 3.3VWM 8.9VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:74,137
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Product details
Overview
VTVS3V3GSMF-HM3-18 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 signal lines. It features a 3.3 V stand-off voltage (VRWM), ±2 % tolerance on breakdown voltage (6.57–6.84 V at IT = 1 mA), 43.99 A peak pulse current (10/1000 μs), 8.9 V maximum clamping voltage at IPPM, and 2095 pF typical junction capacitance at 0 V.
For engineers reviewing the VTVS3V3GSMF-HM3-18 datasheet, VTVS3V3GSMF-HM3-18 pinout, VTVS3V3GSMF-HM3-18 application, or VTVS3V3GSMF-HM3-18 equivalent, key selection criteria include its tight 2 % VBR tolerance, IEC 61000-4-2 ±30 kV contact/air discharge rating, AEC-Q101 qualification option, halogen-free construction, and compatibility with SOD-123W footprint.
Technical Context
This TVS diode operates as a unidirectional clamping device, triggering into avalanche conduction when reverse voltage exceeds its 6.57–6.84 V breakdown range. Its low 8.9 V clamping voltage at 43.99 A ensures robust protection for 3.3 V logic interfaces without overstressing downstream ICs.
Designed for surface-mount reflow and wave soldering, it delivers 400 W peak pulse power per 10/1000 μs waveform, supports operation from –55 °C to +175 °C junction temperature, and meets stringent automotive-grade reliability via optional AEC-Q101 qualification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 3.3 V - Maximum continuous reverse operating voltage before clamping begins; matches 3.3 V I/O rail systems. |
| Breakdown Voltage (VBR) | 6.57–6.84 V at IT = 1 mA, ±2 % tolerance - Tighter tolerance enables precise overvoltage threshold control vs. ±5 % variants. |
| Peak Pulse Current (IPPM) | 43.99 A (10/1000 μs) - Sustains high-energy transients common in industrial and automotive data lines. |
| Clamping Voltage (VC) | 8.9 V at IPPM - Limits voltage seen by protected circuitry to safe levels during surge events. |
| Junction Capacitance (CD) | 2095 pF at VR = 0 V, f = 1 MHz - High capacitance indicates suitability for low-speed lines (e.g., USB 2.0, RS-485, CAN), not high-speed differential pairs. |
| ESD Rating | ±30 kV contact / ±30 kV air (IEC 61000-4-2) - Full compliance with Level 4 ESD immunity for end-equipment certification. |
| Package | SMF (DO-219AB) - Low-profile, halogen-free, MSL level 1, compatible with SOD-123W footprint and reflow profiles up to 260 °C. |
Pinout & Package
SMF (DO-219AB) is a surface-mount, low-profile package with cathode marking indicated by a bar on the body. Dimensions: 3.9 mm × 1.9 mm × 1.08 mm (L × W × H). Footprint recommendation: 2.9 mm × 1.4 mm pad layout with 1.3 mm solder mask opening.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground; forms return path during clamping event. |
| Cathode | Protected line input | Connected to signal line being protected (e.g., USB D+, CAN_H); conducts avalanche current to ground when overvoltage occurs. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Enables handling of high-energy surges in automotive load-dump or industrial lightning-induced transients. |
| ±2 % VBR tolerance | Reduces design margin uncertainty versus ±5 % variants, allowing tighter system-level voltage window planning. |
| "Low-Noise" fast response | Nanosecond-scale turn-on ensures clamping initiates before sensitive ICs experience damaging overvoltage. |
| AEC-Q101 qualified option | Validated for automotive under-hood and infotainment applications requiring extended temperature and reliability validation. |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global electronics manufacturing and end-of-life recycling. |
Applications
| USB 2.0 Interface Protection | Automotive LIN Bus |
|---|---|
|
Use Scenario: Protecting USB 2.0 D+ and D− lines against ESD events during cable insertion or handling. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between signal line and ground, absorbing ±30 kV ESD pulses per IEC 61000-4-2. Use Value: Prevents latch-up or gate oxide damage in USB transceivers while maintaining signal integrity due to defined 2095 pF capacitance. |
Use Scenario: Safeguarding LIN bus master/slave nodes from battery transients and ESD in vehicle body control modules. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across LIN line and chassis ground, clamping spikes above 3.3 V supply rail. Use Value: Ensures uninterrupted LIN communication during 12 V system load dump (ISO 7637-2 Pulse 5a) and meets AEC-Q101 stress requirements. |
| Industrial RS-485 Transceivers | Smart Meter Communication Ports |
|
Use Scenario: Shielding half-duplex RS-485 transceivers (e.g., MAX485) from induced surges on long-wire fieldbus connections. IC Role / Device Role / Timing Role: Unidirectional TVS on each differential line (A and B) referenced to ground, limiting clamped voltage to ≤8.9 V. Use Value: Maintains receiver common-mode range compliance and prevents permanent damage during 4 kV EFT (IEC 61000-4-4) events. |
Use Scenario: Protecting optical or RF communication ports (e.g., PLC, NB-IoT) in utility smart meters exposed to outdoor ESD and lightning coupling. IC Role / Device Role / Timing Role: Primary front-end surge suppressor on 3.3 V auxiliary power or data interface lines, rated for 400 W peak power. Use Value: Supports meter certification to IEC 61000-4-2/4-4/4-5 and extends field lifetime in harsh electromagnetic 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 |
|---|---|---|---|
| SMAJ3.3A-E3/57T | ±5 % VBR tolerance (6.4–7.0 V), same 3.3 V VRWM, 42.95 A IPPM, 8.9 V VC, SMA package (DO-214AC) | Larger footprint (4.5 × 2.7 mm), higher thermal resistance (RthJL = 35 K/W vs. 20 K/W), no AEC-Q101 option | Select for cost-sensitive industrial designs where tighter VBR tolerance is noncritical and board space allows SMA. |
| VTVS3V3ASMF-HM3-18 | ±5 % VBR tolerance (6.4–7.0 V), identical VRWM, IPPM, VC, CD, and package; same halogen-free/AEC-Q101 options | Looser breakdown tolerance increases worst-case clamping uncertainty; otherwise functionally identical | Choose when ±5 % VBR is acceptable and lower unit cost is prioritized over precision threshold control. |
Compared with SMAJ3.3A-E3/57T, VTVS3V3GSMF-HM3-18 offers superior thermal performance and automotive qualification readiness; compared with VTVS3V3ASMF-HM3-18, it provides tighter voltage threshold control critical for margin-constrained 3.3 V systems.
Availability
VTVS3V3GSMF-HM3-18 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive LIN bus safeguarding, and industrial RS-485 transceiver applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for VTVS3V3GSMF-HM3-18 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 compact, high-power transient suppression in space-constrained PCB layouts, with emphasis on automotive-grade robustness, low-profile packaging, and IEC/ISO-compliant surge handling.
FAQ
What is the breakdown voltage tolerance for VTVS3V3GSMF-HM3-18?
The VTVS3V3GSMF-HM3-18 has a ±2 % tolerance on its reverse breakdown voltage (VBR), specified as 6.57 V minimum to 6.84 V maximum at IT = 1 mA and TJ = 25 °C. This tighter tolerance improves predictability of clamping onset versus ±5 % variants like VTVS3V3ASMF-HM3-18, making VTVS3V3GSMF-HM3-18 suitable for designs with narrow voltage margins around 3.3 V rails.
Is VTVS3V3GSMF-HM3-18 qualified for automotive use?
VTVS3V3GSMF-HM3-18 is available in an AEC-Q101 qualified version (denoted by "H" in the ordering code), confirming validation for automotive applications including engine control units, body electronics, and infotainment systems. The standard VTVS3V3GSMF-HM3-18 part may be used in automotive contexts only if the specific reel carries AEC-Q101 certification - verify lot traceability and qualification status with Aetrix Electronics prior to release.
What does the "HM3-18" suffix mean in VTVS3V3GSMF-HM3-18?
In VTVS3V3GSMF-HM3-18, "H" indicates AEC-Q101 qualification and halogen-free construction, "M3" denotes lead (Pb)-free tin-plated terminations, and "-18" specifies packaging in 10K per 13″ reel (8 mm tape, MOQ = 50K). This full suffix confirms compliance with automotive reliability, RoHS, and J-STD-020 MSL level 1 reflow requirements.
Can VTVS3V3GSMF-HM3-18 be used for bidirectional protection?
No, VTVS3V3GSMF-HM3-18 is a unidirectional TVS diode, intended for protection of DC-biased lines such as 3.3 V power rails or single-ended signals referenced to ground. For bidirectional applications like AC-coupled data lines or RS-485 differential pairs, a dedicated bidirectional variant (e.g., VTVS3V3BGMF-HM3-18) or back-to-back diode configuration is required - VTVS3V3GSMF-HM3-18 will not clamp negative transients.
What is the thermal resistance of VTVS3V3GSMF-HM3-18?
The thermal resistance from junction to lead (RthJL) of VTVS3V3GSMF-HM3-18 is 20 K/W when mounted on an infinite heat sink. This value reflects efficient heat dissipation through the leads during high-energy transient events, supporting reliable 400 W peak pulse power handling. PCB layout must ensure adequate copper area on both anode and cathode pads to approach this thermal performance in practice.
VTVS3V3GSMF-HM3-18 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:
- -
- Capacitance @ Frequency:
- 2095pF @ 1MHz
- Operating Temperature:
- 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS3V3GSMF-HM3-18 FAQ
1.How can I place an order for VTVS3V3GSMF-HM3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS3V3GSMF-HM3-18 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-HM3-18 reliable?
The price and inventory of VTVS3V3GSMF-HM3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VTVS3V3GSMF-HM3-18 is usually 5 days.
3.What payment methods are accepted for VTVS3V3GSMF-HM3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS3V3GSMF-HM3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS3V3GSMF-HM3-18?
VTVS3V3GSMF-HM3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS3V3GSMF-HM3-18 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-HM3-18?
For technical support, including VTVS3V3GSMF-HM3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS3V3GSMF-HM3-18 requirements.
6.How does Aetrix verify that VTVS3V3GSMF-HM3-18 is sourced from the original manufacturer or authorized distributors?
All VTVS3V3GSMF-HM3-18 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-HM3-18 meets industry standards.
7.What is the process for return or replacement of VTVS3V3GSMF-HM3-18?
All VTVS3V3GSMF-HM3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS3V3GSMF-HM3-18, 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-HM3-18 part is unused and in its original packaging.
Return procedure for VTVS3V3GSMF-HM3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS3V3GSMF-HM3-18 Tags
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