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Vishay General Semiconductor - Diodes Division VTVS12GSMF-HM3-18
- Part No.:
- VTVS12GSMF-HM3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS12GSMF-HM3-18.pdf
- Description:
- TVS DIODE 12.4VWM 20.1VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,400
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Product details
Overview
VTVS12GSMF-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 12.4 V maximum stand-off voltage (VRWM), 14.41–15.00 V reverse breakdown voltage (VBR) at 1 mA, ±2 % tolerance, 20.1 V maximum clamping voltage (VC) at 19.53 A peak pulse current, and operates from −55 °C to +175 °C junction temperature - used in automotive infotainment power rail protection.
For engineers reviewing the VTVS12GSMF-HM3-18 datasheet, VTVS12GSMF-HM3-18 pinout, VTVS12GSMF-HM3-18 application, or VTVS12GSMF-HM3-18 equivalent, key selection criteria include clamping performance under 10/1000 μs surge, IEC 61000-4-2 ±30 kV ESD immunity, halogen-free SOD-123W-compatible packaging, AEC-Q101 qualification status, and thermal resistance of 20 K/W to heatsink.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its 14.41–15.00 V breakdown range. Its low-noise design ensures sub-nanosecond response time, enabling effective suppression of fast transients including ESD and inductive switching spikes.
The device is rated for 400 W peak pulse power (10/1000 μs), with 20.1 V clamping at 19.53 A IPPM and only 0.05 μA leakage at VRWM = 12.4 V. Its DO-219AB (SMF) package supports wave and reflow soldering, meets MSL level 1 per J-STD-020, and is halogen-free per Vishay's material categorization standard.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400 W (10/1000 μs waveform - sustains high-energy surges without failure) |
| Stand-off Voltage (VRWM) | 12.4 V max - defines maximum continuous reverse operating voltage before conduction begins |
| Breakdown Voltage (VBR) | 14.41–15.00 V at IT = 1 mA, ±2 % tolerance - precise triggering threshold for reliable overvoltage clamping |
| Clamping Voltage (VC) | 20.1 V at IPPM = 19.53 A - limits downstream voltage stress during worst-case surge events |
| ESD Immunity | ±30 kV contact & air discharge per IEC 61000-4-2 - protects interfaces against human-body-model ESD events |
| Junction Temperature Range | −55 °C to +175 °C - enables deployment in under-hood automotive and industrial environments |
| Package | SMF (DO-219AB) - low-profile, surface-mount outline compatible with SOD-123W footprint and automated assembly |
Pinout & Package
SMF (DO-219AB) package: 2-terminal unidirectional TVS diode with cathode marked by bar on top surface. Dimensions: 3.9 mm × 1.9 mm × 1.08 mm (L × W × H); recommended footprint per Vishay S8-V-3915.01-001.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; completes clamping path during transient |
| Cathode | Protected line input terminal | Connected to signal/power line being protected; carries full surge current during clamping |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power rating | Enables robust protection against ISO 7637-2 pulse 1/2a/5a and IEC 61000-4-5 surges in 12 V systems |
| ±2 % VBR tolerance (G-series) | Reduces design margin requirements and improves consistency across production batches |
| IEC 61000-4-2 ±30 kV ESD rating | Eliminates need for external ESD protection on USB, CAN, LIN, and sensor interface lines |
| AEC-Q101 qualified option available | Validated for automotive applications requiring reliability under temperature cycling, humidity, and mechanical stress |
| Halogen-free, MSL level 1 packaging | Supports lead-free reflow processes up to 260 °C peak and simplifies RoHS/halogen compliance documentation |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting 12 V supply rail of BCM microcontroller and CAN transceiver from load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between VCC and GND, responding within <1 ns to limit voltage excursion below IC absolute maximum ratings. Use Value: Prevents latch-up or permanent damage during 12 V system surges up to 400 W, maintaining functional safety integrity. |
Use Scenario: Safeguarding 24 V digital input channels of programmable logic controllers against field-wiring induced surges and ESD. IC Role / Device Role / Timing Role: Standoff-rated TVS connected in parallel with optocoupler input, clamping transients before they reach isolation barrier. Use Value: Maintains input channel reliability without adding series impedance or signal delay - critical for deterministic scan-cycle timing. |
| Automotive Infotainment USB Port | Smart Sensor Node Power Line |
Use Scenario: ESD protection for VBUS and D+/D− lines in vehicle-mounted USB 2.0 host ports exposed to user contact. IC Role / Device Role / Timing Role: Low-capacitance (807 pF) unidirectional TVS placed at connector entry point, shunting ESD energy to chassis ground. Use Value: Passes ±30 kV IEC 61000-4-2 testing while preserving signal integrity and USB 480 Mbps data rate. |
Use Scenario: Protecting 3.3 V/5 V power rails of battery-powered IoT sensors in harsh factory environments. IC Role / Device Role / Timing Role: Compact SMF-packaged TVS mounted directly at sensor module power entry, minimizing PCB trace inductance. Use Value: Enables operation down to −55 °C and up to +175 °C junction temperature, supporting extended outdoor or engine-bay deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A-E3/57T | ±5 % VBR tolerance; 12 V nominal VRWM; same DO-214AC (SMA) package but larger footprint | Higher leakage (5 μA vs. 0.05 μA) and lower clamping ratio - less suitable for ultra-low-power sensor rails | Select when cost sensitivity outweighs precision clamping and board space constraints are relaxed |
| 1.5SMC12A | Same 12 V VRWM but 1500 W rating; DO-214AB (SMC) package - 2× height and 3× footprint area vs. SMF | Over-specified for PCB space-constrained automotive modules; higher thermal mass delays response slightly | Prefer only where legacy layout uses SMC or surge threat exceeds 400 W (e.g., alternator load dump mitigation) |
Compared with SMAJ12A-E3/57T and 1.5SMC12A, VTVS12GSMF-HM3-18 delivers tighter voltage tolerance, lower leakage, smaller footprint, and optimized thermal resistance - making it the preferred choice for modern compact, high-reliability automotive and industrial electronics where precision clamping and board real estate are critical.
Availability
VTVS12GSMF-HM3-18 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC inputs, infotainment USB ports, and smart sensor node power rails requiring stable component supply and long-term lifecycle support.
Supply support for VTVS12GSMF-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 high-density, high-reliability transient suppression in space-constrained applications - engineered specifically for AEC-Q101 compliance, low-profile mounting, and consistent clamping performance across temperature and lifetime.
FAQ
What is the clamping voltage of VTVS12GSMF-HM3-18 at its rated peak pulse current?
The VTVS12GSMF-HM3-18 has a maximum reverse clamping voltage (VC) of 20.1 V at its rated peak pulse current (IPPM) of 19.53 A under a 10/1000 μs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within their absolute maximum ratings. The VTVS12GSMF-HM3-18 maintains this clamping performance across its full operating temperature range.
Is VTVS12GSMF-HM3-18 AEC-Q101 qualified?
VTVS12GSMF-HM3-18 is part of the AEC-Q101-qualified VTVS eSMP® Series, with qualification explicitly documented in Vishay's official product specification (Document Number: 85891, Rev. 2.2). While the "HM3-18" suffix denotes halogen-free, lead-free terminations and 10k/reel packaging, the underlying die and construction meet AEC-Q101 stress test requirements - including temperature cycling, high-temperature operating life, and ESD robustness - making VTVS12GSMF-HM3-18 suitable for automotive power and signal line protection.
What does the "G" in VTVS12GSMF-HM3-18 indicate?
The "G" in VTVS12GSMF-HM3-18 specifies ±2 % tolerance on the reverse breakdown voltage (VBR), distinguishing it from "A"-suffixed variants (e.g., VTVS12ASMF) which carry ±5 % tolerance. Per Vishay's Electrical Characteristics table, VTVS12GSMF exhibits a VBR range of 14.41–15.00 V at IT = 1 mA. This tighter tolerance allows more precise surge threshold setting and reduces design margin overhead - a key differentiator for VTVS12GSMF-HM3-18 in noise-sensitive or tightly regulated power systems.
Can VTVS12GSMF-HM3-18 be used in bidirectional protection configurations?
No - VTVS12GSMF-HM3-18 is a unidirectional TVS diode, intended only for DC line protection where polarity is fixed (e.g., 12 V supply to ground). Its electrical characteristics, including forward voltage (VF = 1.8 V at 50 A) and reverse standoff behavior, are specified exclusively for unidirectional operation. For AC or bidirectional signal lines (e.g., RS-485, CAN), a dedicated bidirectional variant such as VTVS12GSMF-BD or paired unidirectional devices would be required - VTVS12GSMF-HM3-18 alone cannot provide symmetrical clamping.
What is the thermal resistance of VTVS12GSMF-HM3-18, and how does it affect layout?
VTVS12GSMF-HM3-18 has a thermal resistance RthJL of 20 K/W (junction-to-lead) when mounted on an infinite heat sink, as specified in Vishay's Absolute Maximum Ratings table. This value guides PCB copper pour design: to maintain TJ ≤ 175 °C during repeated 400 W pulses, designers must ensure adequate copper area and via count under the SMF package leads. The low-profile DO-219AB footprint supports efficient thermal transfer through the cathode and anode pads - unlike larger packages, VTVS12GSMF-HM3-18 relies on direct pad conduction rather than case dissipation.
VTVS12GSMF-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):
- 12.4V
- Voltage - Breakdown (Min):
- 14.41V
- Voltage - Clamping (Max) @ Ipp:
- 20.1V
- Current - Peak Pulse (10/1000µs):
- 19.53A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 807pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS12GSMF-HM3-18 FAQ
1.How can I place an order for VTVS12GSMF-HM3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS12GSMF-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 VTVS12GSMF-HM3-18 reliable?
The price and inventory of VTVS12GSMF-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 VTVS12GSMF-HM3-18 is usually 5 days.
3.What payment methods are accepted for VTVS12GSMF-HM3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS12GSMF-HM3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS12GSMF-HM3-18?
VTVS12GSMF-HM3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS12GSMF-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 VTVS12GSMF-HM3-18?
For technical support, including VTVS12GSMF-HM3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS12GSMF-HM3-18 requirements.
6.How does Aetrix verify that VTVS12GSMF-HM3-18 is sourced from the original manufacturer or authorized distributors?
All VTVS12GSMF-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 VTVS12GSMF-HM3-18 meets industry standards.
7.What is the process for return or replacement of VTVS12GSMF-HM3-18?
All VTVS12GSMF-HM3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS12GSMF-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 VTVS12GSMF-HM3-18 part is unused and in its original packaging.
Return procedure for VTVS12GSMF-HM3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS12GSMF-HM3-18 Tags
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Diodes Incorporated
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