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Vishay General Semiconductor - Diodes Division VTVS31GSMF-HM3-18
- Part No.:
- VTVS31GSMF-HM3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS31GSMF-HM3-18.pdf
- Description:
- TVS DIODE 30.6VWM 51VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,449
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Product details
Overview
VTVS31GSMF-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 DC lines. It features a 30.6 V stand-off voltage (VRWM), 35.28–36.72 V reverse breakdown voltage (VBR) at 1 mA, 51 A peak pulse current (IPPM), and clamps to ≤51 V at rated pulse, targeting automotive infotainment power rails and USB-C port protection.
For engineers reviewing the VTVS31GSMF-HM3-18 datasheet, VTVS31GSMF-HM3-18 pinout, VTVS31GSMF-HM3-18 application, or VTVS31GSMF-HM3-18 equivalent, key selection criteria include ±2 % VBR tolerance, 380 pF capacitance at 0 V, AEC-Q101 qualification, halogen-free construction, and compatibility with SOD-123W footprint constraints.
Technical Context
This TVS diode operates as a unidirectional clamping device with avalanche breakdown behavior, optimized for fast response (<1 ns) against ESD transients per IEC 61000-4-2 (±30 kV contact/air). Its thermal resistance (RthJL = 20 K/W) and 175 °C max junction temperature support high-reliability operation in under-hood automotive environments.
The SMF package enables wave and reflow soldering, with MSL level 1 moisture sensitivity and UL 94 V-0 flammability rating. Its 1.08 mm height and 3.9 × 1.9 mm outline meet space-constrained PCB layouts while maintaining 400 W peak pulse power (10/1000 μs waveform).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400 W (10/1000 μs waveform; defines maximum transient energy absorption without failure) |
| Stand-off Voltage (VRWM) | 30.6 V (maximum continuous DC operating voltage before leakage exceeds 0.05 μA) |
| Breakdown Voltage (VBR) | 35.28–36.72 V at IT = 1 mA (±2 % tolerance ensures precise clamping threshold alignment) |
| Clamping Voltage (VC) | ≤51 V at IPPM = 7.74 A (voltage seen by protected circuit during full-rated surge) |
| Capacitance (CD) | 380 pF at VR = 0 V, f = 1 MHz (low enough for USB 2.0 signal integrity; not suitable for USB 3.0+) |
| ESD Rating | ±30 kV contact / ±30 kV air (IEC 61000-4-2 Level 4; eliminates need for external ESD staging) |
| Operating Temperature | −55 °C to +175 °C (supports engine control unit and ADAS module deployment) |
Pinout & Package
SMF (DO-219AB) package: surface-mount, low-profile (1.08 mm height), cathode-marked end, compatible with SOD-123W footprint and reflow profiles up to 260 °C peak.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path | Connected to ground or low-impedance reference; carries full IPPM during clamping |
| Cathode | Protected line connection | Connected to I/O line (e.g., USB VBUS); voltage referenced to anode during surge |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % VBR tolerance | Enables tighter clamping margin vs. ±5 % variants, reducing risk of false triggering on nominal 33 V rail noise |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per JESD22-A114 |
| Halogen-free molding compound | Meets IPC-4101D/126 and RoHS Directive 2011/65/EU; supports green manufacturing compliance |
| Low-noise fast response | Sub-nanosecond turn-on time minimizes overshoot during ESD events, preserving signal integrity on sensitive analog inputs |
| SOD-123W footprint compatibility | Enables drop-in replacement in existing layouts designed for industry-standard low-profile TVS packages |
Applications
| Automotive Infotainment Power Rail | USB-C Port VBUS Protection |
|---|---|
|
Use Scenario: Protecting 3.3–36 V power domains feeding head unit display controllers and audio codecs from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between VBUS and chassis ground, activated within <1 ns of overvoltage onset. Use Value: Clamps 30.6 V nominal rail to ≤51 V during 7.74 A surges, preventing damage to downstream PMICs and SoCs without adding series impedance. |
Use Scenario: Safeguarding USB-C receptacle VBUS pins against hot-plug ESD and cable-induced transients in portable docking stations. IC Role / Device Role / Timing Role: Standoff-mode protector mounted directly at connector, shunting ESD energy before it reaches USB PD controller IC. Use Value: Withstands ±30 kV IEC 61000-4-2 contact discharge while adding only 380 pF capacitance-within USB 2.0 eye diagram budget. |
| Industrial Sensor Interface Supply | Telematics LTE Module Power Input |
|
Use Scenario: Securing 24 V supply lines to RS-485 transceivers and MEMS pressure sensors exposed to field wiring transients. IC Role / Device Role / Timing Role: Primary surge clamp on sensor node DC input, coordinated with upstream fuse and downstream LC filter. Use Value: 400 W pulse rating absorbs multiple 10/1000 μs surges per ISO 16750-2 without degradation; 175 °C TJ max supports enclosure mounting near motors. |
Use Scenario: Protecting LTE modem power input (3.3–36 V range) in vehicle telematics units subjected to battery reversal and jump-start spikes. IC Role / Device Role / Timing Role: First-line defense against reverse polarity and load dump transients entering via OBD-II or direct battery tap. Use Value: Unidirectional configuration blocks reverse voltage while clamping forward surges to safe levels for buck converter input stages. |
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 (33.2–36.8 V), 400 W rating, SMA package (DO-214AC), higher RthJA | Larger footprint (4.5 × 2.7 mm), less suitable for ultra-thin modules; no AEC-Q101 qualification | Select when cost priority outweighs automotive qualification and board space constraints |
| TPSMD33A | ±5 % VBR (33.2–36.8 V), 400 W, SMC package (DO-214AB), 100 pF capacitance | Lower capacitance enables USB 3.0/PCIe use, but 2.4 mm height exceeds SMF height limit | Choose for high-speed data line protection where capacitance is critical and Z-height allows |
Compared with VTVS31GSMF-HM3-18, SMAJ33A-E3/57T trades AEC-Q101 compliance and compactness for broader distributor availability, while TPSMD33A offers lower capacitance at the expense of mechanical fit in space-limited automotive modules.
Availability
VTVS31GSMF-HM3-18 is available at Aetrix Electronics and suitable for automotive infotainment systems, USB-C peripheral protection, industrial sensor nodes, and telematics power inputs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for VTVS31GSMF-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 TransZorb® eSMP® Series delivers high-power TVS diodes in ultra-low-profile packages for next-generation ESD and surge protection in space- and thermal-constrained applications.
FAQ
What is the exact breakdown voltage range for VTVS31GSMF-HM3-18?
The VTVS31GSMF-HM3-18 has a reverse breakdown voltage (VBR) of 35.28 V minimum to 36.72 V maximum at IT = 1 mA and TJ = 25 °C, reflecting its ±2 % tolerance grade. This tight tolerance ensures consistent clamping behavior across production lots and temperature extremes, critical for protecting 33 V nominal systems where overvoltage margin is narrow. The VTVS31GSMF-HM3-18 datasheet specifies this range in Table 1 under "Electrical Characteristics".
Is VTVS31GSMF-HM3-18 qualified for automotive use?
Yes, VTVS31GSMF-HM3-18 is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per JESD22-A114. This qualification confirms suitability for automotive powertrain, body electronics, and infotainment modules operating from −40 °C to +125 °C ambient. The VTVS31GSMF-HM3-18 meets these requirements as documented in Vishay's qualification report for the eSMP® SMF family.
What is the maximum clamping voltage of VTVS31GSMF-HM3-18 during a 10/1000 μs surge?
The VTVS31GSMF-HM3-18 clamps to a maximum of 51 V at its rated peak pulse current of 7.74 A (10/1000 μs waveform). This value is measured at the device terminals and represents the worst-case voltage imposed on the protected circuit during full-rated transient energy. Designers must ensure downstream components tolerate ≤51 V under surge conditions. The VTVS31GSMF-HM3-18 specification sheet lists this as VC in the "Electrical Characteristics" table.
Does VTVS31GSMF-HM3-18 support lead-free reflow soldering?
Yes, VTVS31GSMF-HM3-18 is rated for lead-free reflow soldering with a peak temperature of up to 260 °C, compliant with JEDEC J-STD-020 Class 2 moisture sensitivity level (MSL level 1). Its halogen-free molding compound and tin-plated terminations meet RoHS Directive 2011/65/EU. The VTVS31GSMF-HM3-18 packaging and soldering guidelines are detailed in the "Package Data" section of its Vishay datasheet (Doc. #85891).
How does the capacitance of VTVS31GSMF-HM3-18 affect high-speed signal lines?
The VTVS31GSMF-HM3-18 exhibits 380 pF typical capacitance at 0 V bias and 1 MHz, making it suitable for DC power rail protection and low-speed interfaces like RS-232 or CAN, but not recommended for USB 3.0, HDMI, or PCIe data lines where sub-1 pF is required. Its capacitance introduces minimal loading on 33 V power nets while avoiding signal integrity issues. The VTVS31GSMF-HM3-18 capacitance curve is shown in Figure 3 of the Vishay datasheet.
VTVS31GSMF-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):
- 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:
- -
- Capacitance @ Frequency:
- 380pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS31GSMF-HM3-18 FAQ
1.How can I place an order for VTVS31GSMF-HM3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS31GSMF-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 VTVS31GSMF-HM3-18 reliable?
The price and inventory of VTVS31GSMF-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 VTVS31GSMF-HM3-18 is usually 5 days.
3.What payment methods are accepted for VTVS31GSMF-HM3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS31GSMF-HM3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS31GSMF-HM3-18?
VTVS31GSMF-HM3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS31GSMF-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 VTVS31GSMF-HM3-18?
For technical support, including VTVS31GSMF-HM3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS31GSMF-HM3-18 requirements.
6.How does Aetrix verify that VTVS31GSMF-HM3-18 is sourced from the original manufacturer or authorized distributors?
All VTVS31GSMF-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 VTVS31GSMF-HM3-18 meets industry standards.
7.What is the process for return or replacement of VTVS31GSMF-HM3-18?
All VTVS31GSMF-HM3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS31GSMF-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 VTVS31GSMF-HM3-18 part is unused and in its original packaging.
Return procedure for VTVS31GSMF-HM3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS31GSMF-HM3-18 Tags
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