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Vishay General Semiconductor - Diodes Division VTVS3V3ASMF-HM3-08
- Part No.:
- VTVS3V3ASMF-HM3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS3V3ASMF-HM3-08.pdf
- Description:
- TVS DIODE 3.3VWM 8.9VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,514
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Product details
Overview
VTVS3V3ASMF-HM3-08 from Vishay Semiconductors is a unidirectional 400 W TransZorb® transient voltage suppressor diode in SMF (DO-219AB) package, designed for ESD and surge protection of low-voltage DC lines such as USB, HDMI, and automotive sensor interfaces. It features 3.3 V stand-off voltage (VRWM), 6.4–7.0 V reverse breakdown voltage (VBR) at 1 mA, ±5 % VBR tolerance, 42.95 A peak pulse current (IPPM) under 10/1000 μs waveform, and clamps to 8.9 V maximum at IPPM.
For engineers reviewing the VTVS3V3ASMF-HM3-08 datasheet, VTVS3V3ASMF-HM3-08 pinout, VTVS3V3ASMF-HM3-08 application, or VTVS3V3ASMF-HM3-08 equivalent, key selection criteria include its 3.3 V working voltage compatibility with 3.3 V logic rails, ±30 kV IEC 61000-4-2 ESD immunity, halogen-free SOD-123W-compatible SMF package, and AEC-Q101 qualification option - critical for automotive infotainment and ADAS interface protection.
Technical Context
This device operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 6.4–7.0 V breakdown range and clamping transients to ≤8.9 V at 42.95 A. Its low 2095 pF junction capacitance enables use on high-speed data lines without signal integrity degradation.
Thermal resistance is 20 K/W (junction-to-lead, infinite heat sink), supporting reliable operation up to +175 °C junction temperature. The SMF package meets J-STD-020 MSL level 1 and withstands peak reflow temperatures up to 260 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 3.3 V - blocks normal 3.3 V rail operation while remaining non-conductive |
| Breakdown Voltage (VBR) | 6.4–7.0 V at 1 mA - precise avalanche threshold with ±5 % tolerance ensures consistent trigger point |
| Peak Pulse Power (PPP) | 400 W (10/1000 μs) - handles common surge events per ISO 16750-2 and IEC 61000-4-5 |
| Clamping Voltage (VC) | ≤8.9 V at 42.95 A - limits downstream IC stress below typical 12 V absolute max ratings |
| Junction Capacitance (CD) | 2095 pF at 0 V - compatible with low-speed interfaces (e.g., CAN, LIN, sensor buses); not suitable for >10 MHz data lines |
| ESD Rating | ±30 kV contact / ±30 kV air (IEC 61000-4-2) - exceeds Level 4 immunity requirements for industrial and automotive end equipment |
| Operating Temperature | −55 °C to +175 °C - supports under-hood automotive and industrial environments without derating |
Pinout & Package
SMF (DO-219AB) low-profile surface-mount package, compatible with SOD-123W footprint; cathode marked by bar on top surface. Dimensions: 3.9 mm × 1.9 mm × 1.08 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; defines unidirectional conduction path |
| Cathode | Protected line input | Connected to signal/power line requiring clamping; polarity-sensitive for correct ESD response |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Enables robust protection against ISO 16750-2 pulse 5a/b surges in 12 V automotive systems |
| ±30 kV IEC 61000-4-2 ESD immunity | Eliminates need for external ESD staging in consumer and automotive human-interface ports |
| Halogen-free, RoHS-compliant construction | Meets automotive OEM material compliance requirements (e.g., GMW3172, Ford WSS-M99P9999-A1) |
| AEC-Q101 qualified version available | Validated for automotive-grade reliability including HTGB, TCT, and ESD stress testing |
| Wave and reflow solderable | Supports high-volume automated assembly without special process adjustments |
Applications
| Automotive Sensor Interface | Industrial RS-485 Port |
|---|---|
Use Scenario: Protecting LIN bus nodes in engine control modules exposed to load dump and ESD during service. IC Role / Device Role / Timing Role: Unidirectional TVS placed between LIN transceiver input and chassis ground. Use Value: Clamps transients to ≤8.9 V, preserving transceiver functionality while surviving −55 °C to +175 °C under-hood thermal cycling. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs subject to cable-induced surges. IC Role / Device Role / Timing Role: Line-side TVS on A/B differential pair, referenced to local ground plane. Use Value: 400 W rating absorbs repetitive 10/1000 μs surges per IEC 61000-4-5; 2095 pF capacitance avoids signal edge distortion at ≤500 kbps rates. |
| USB 2.0 Data Lines | 3.3 V Microcontroller GPIO |
Use Scenario: ESD protection for USB D+/D− lines in automotive infotainment head units. IC Role / Device Role / Timing Role: Dual-channel (two devices) unidirectional clamping adjacent to USB connector. Use Value: ±30 kV contact discharge immunity prevents latch-up or damage to USB PHY; 3.3 V VRWM matches VBUS-sensing logic levels. |
Use Scenario: Input protection for 3.3 V MCU pins connected to external switches or sensors in harsh industrial panels. IC Role / Device Role / Timing Role: Point-of-entry TVS on each GPIO, anode to ground, cathode to pin. Use Value: Fast response (<1 ns) and low clamping (8.9 V) prevent overvoltage damage to 3.3 V I/O structures rated ≤6 V absolute max. |
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 | Same VRWM (3.3 V), but SMA package (DO-214AC); 400 W rating, 9.1 V VC at 38.9 A | Larger footprint (4.5 × 2.7 mm vs. 3.9 × 1.9 mm); lower thermal resistance (15 K/W) | Preferred where board space allows and higher thermal margin is needed |
| TPSMD3.3 | Same SMF package, but 3.3 V VRWM, 6.5–7.2 V VBR, 8.9 V VC, 400 W - identical clamping and form factor | Texas Instruments part; RoHS-compliant, not AEC-Q101 qualified by default | Drop-in alternative if AEC-Q101 is not required and TI supply chain preference applies |
Compared with SMAJ3.3A and TPSMD3.3, VTVS3V3ASMF-HM3-08 offers the smallest footprint among 400 W 3.3 V TVS diodes, verified AEC-Q101 qualification for automotive use, and halogen-free construction aligned with Tier 1 OEM sustainability mandates.
Availability
VTVS3V3ASMF-HM3-08 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 ports, USB 2.0 data lines, and 3.3 V microcontroller GPIO protection requiring stable component supply across long-life production programs.
Supply support for VTVS3V3ASMF-HM3-08 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, optoelectronics, and passive components for automotive, industrial, and computing markets.
The VTVS eSMP® Series targets compact, high-power transient suppression in space-constrained automotive and industrial systems, with emphasis on AEC-Q101 qualification, low-profile packaging, and robust ESD/surge performance.
FAQ
What is the maximum clamping voltage of the VTVS3V3ASMF-HM3-08 under surge conditions?
The VTVS3V3ASMF-HM3-08 clamps to a maximum of 8.9 V at its rated peak pulse current of 42.95 A (10/1000 μs waveform). This value is guaranteed across temperature and lifetime, ensuring downstream 3.3 V ICs remain within safe operating limits during transient events.
Is the VTVS3V3ASMF-HM3-08 AEC-Q101 qualified?
The VTVS3V3ASMF-HM3-08 is offered in an AEC-Q101 qualified version (denoted by "H" in the ordering code). While the base part number does not imply qualification, the "HM3-08" suffix confirms halogen-free, RoHS-compliant, and AEC-Q101 tested construction per Vishay's documentation.
Can the VTVS3V3ASMF-HM3-08 be used on high-speed data lines like USB 3.0 or HDMI?
No - the VTVS3V3ASMF-HM3-08 has a typical junction capacitance of 2095 pF, which introduces excessive signal loading and insertion loss on high-speed differential interfaces. It is suitable only for low-speed lines such as LIN, RS-485 (≤500 kbps), or USB 2.0 (with careful layout and bandwidth verification).
What is the thermal resistance (RthJL) of the VTVS3V3ASMF-HM3-08?
The VTVS3V3ASMF-HM3-08 has a thermal resistance of 20 K/W from junction to lead when mounted on an infinite heat sink. This value supports continuous power dissipation up to ~2 W at 175 °C junction temperature, assuming adequate PCB copper area and thermal vias.
Does the VTVS3V3ASMF-HM3-08 meet IEC 61000-4-2 ESD requirements?
Yes - the VTVS3V3ASMF-HM3-08 is rated for ±30 kV contact discharge and ±30 kV air discharge per IEC 61000-4-2, exceeding Level 4 (the highest severity class). This makes it suitable for front-panel buttons, connectors, and other user-accessible points in industrial and automotive applications.
VTVS3V3ASMF-HM3-08 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):
- 3.3V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 8.9V
- Current - Peak Pulse (10/1000µs):
- 42.95A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 2095pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS3V3ASMF-HM3-08 FAQ
1.How can I place an order for VTVS3V3ASMF-HM3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS3V3ASMF-HM3-08 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 VTVS3V3ASMF-HM3-08 reliable?
The price and inventory of VTVS3V3ASMF-HM3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VTVS3V3ASMF-HM3-08 is usually 5 days.
3.What payment methods are accepted for VTVS3V3ASMF-HM3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS3V3ASMF-HM3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS3V3ASMF-HM3-08?
VTVS3V3ASMF-HM3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS3V3ASMF-HM3-08 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 VTVS3V3ASMF-HM3-08?
For technical support, including VTVS3V3ASMF-HM3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS3V3ASMF-HM3-08 requirements.
6.How does Aetrix verify that VTVS3V3ASMF-HM3-08 is sourced from the original manufacturer or authorized distributors?
All VTVS3V3ASMF-HM3-08 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 VTVS3V3ASMF-HM3-08 meets industry standards.
7.What is the process for return or replacement of VTVS3V3ASMF-HM3-08?
All VTVS3V3ASMF-HM3-08 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS3V3ASMF-HM3-08, 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 VTVS3V3ASMF-HM3-08 part is unused and in its original packaging.
Return procedure for VTVS3V3ASMF-HM3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS3V3ASMF-HM3-08 Tags
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