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Vishay General Semiconductor - Diodes Division VTVS28GSMF-M3-18
- Part No.:
- VTVS28GSMF-M3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS28GSMF-M3-18.pdf
- Description:
- TVS DIODE 27.9VWM 47VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,466
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Product details
Overview
VTVS28GSMF-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. It features a 27.9 V maximum stand-off voltage (VRWM), 32.39–33.72 V reverse breakdown voltage (VBR) at 1 mA, 47 A peak pulse current (IPPM) under 10/1000 μs waveform, and clamps to ≤47 V at rated current - ideal for protecting automotive infotainment power rails and industrial sensor interfaces.
For engineers reviewing the VTVS28GSMF-M3-18 datasheet, VTVS28GSMF-M3-18 pinout, VTVS28GSMF-M3-18 application, or VTVS28GSMF-M3-18 equivalent, key selection criteria include its ±2 % VBR tolerance, 412 pF typical junction capacitance at 0 V, AEC-Q101 qualification option, halogen-free construction, and compatibility with SOD-123W footprint for space-constrained PCB layouts.
Technical Context
This device operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its precisely specified breakdown range (32.39–33.72 V). Its low dynamic impedance enables fast clamping response (<1 ns), limiting transient energy delivered to downstream circuitry during ESD events per IEC 61000-4-2 (±30 kV contact/air discharge).
The SMF package delivers thermal resistance of 20 K/W (junction-to-lead, mounted on infinite heat sink) and supports wave/reflow soldering with peak temperature up to 260 °C. With operating junction temperature from –55 °C to +175 °C and MSL Level 1 rating, it suits high-reliability automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400 W (10/1000 μs waveform; defines maximum transient energy absorption capability) |
| Stand-off Voltage VRWM | 27.9 V (maximum continuous reverse voltage before significant leakage; sets operating margin for 24 V systems) |
| Breakdown Voltage VBR | 32.39–33.72 V at IT = 1 mA (±2 % tolerance; ensures precise trigger threshold for predictable clamping onset) |
| Clamping Voltage VC | ≤47 V at IPPM = 8.45 A (limits voltage seen by protected IC during worst-case surge) |
| Junction Capacitance CD | 412 pF at VR = 0 V, f = 1 MHz (impacts signal integrity in high-speed data lines; requires layout mitigation) |
| ESD Rating | ±30 kV contact / ±30 kV air (IEC 61000-4-2; qualifies for front-panel and connector-level ESD hardening) |
| Operating Temperature | –55 °C to +175 °C (supports under-hood automotive and industrial ambient conditions) |
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 | Current return path during clamping | Connected to system ground or low-impedance return plane; must handle full IPPM surge current without trace heating |
| Cathode | Protected line connection point | Connected to line being protected (e.g., 24 V supply rail); polarity-sensitive - reverse connection disables protection |
Key Features
| Feature | Design Value |
|---|---|
| "Low-Noise" fast response | Sub-nanosecond turn-on enables effective suppression of ESD transients before sensitive ICs are damaged |
| AEC-Q101 qualified variant available | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| Halogen-free molding compound | Complies with RoHS and JEDEC J-STD-020 MSL Level 1 for lead-free reflow compatibility |
| Wave and reflow solderable | Supports automated assembly without special process adjustments; peak temp rating up to 260 °C |
| UL 94 V-0 flammability rating | Ensures flame retardancy in safety-critical enclosures and high-density PCB assemblies |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply lines feeding infotainment head units against load dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power rail and chassis ground to clamp surges above 27.9 V. Use Value: Limits voltage excursion to ≤47 V during 47 A transients, preventing damage to PMICs and microcontrollers without adding series impedance. |
Use Scenario: Safeguarding RS-485 transceivers connected to long field wiring exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-clamp TVS on VCC and signal lines to absorb induced common-mode energy before it reaches the transceiver's internal ESD structures. Use Value: Provides 400 W peak pulse handling with 412 pF capacitance - low enough to avoid signal degradation at 250 kbps while meeting IEC 61000-4-5 Level 3. |
| Consumer USB Port ESD Hardening | Medical Equipment Power Input Protection |
|
Use Scenario: Adding secondary ESD protection on USB VBUS lines after primary polymer PTC, targeting ±30 kV contact discharge per IEC 61000-4-2. IC Role / Device Role / Timing Role: Fast-acting unidirectional clamp shunting ESD current away from USB controller's internal diodes. Use Value: Achieves full ±30 kV pass rating with sub-ns response, complementing slower primary protection without compromising insertion loss or bandwidth. |
Use Scenario: Protecting isolated DC-DC converter inputs in portable diagnostic devices subjected to ESD during clinical handling. IC Role / Device Role / Timing Role: Standoff-rated TVS on primary-side input to prevent transient coupling into isolation barrier during electrostatic discharge events. Use Value: Operates reliably from –55 °C to +175 °C and maintains <0.05 μA leakage at 27.9 V, ensuring no impact on standby power or isolation integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ28A-E3/57T | ±5 % VBR tolerance (31.1–34.3 V), 400 W rating, SMA package (DO-214AC), higher RthJA | Larger footprint; less suitable for ultra-thin modules or high-density automotive PCBs | Select when cost sensitivity outweighs board space constraints and AEC-Q101 is not required |
| 1.5SMC27A | ±5 % VBR (30.0–33.0 V), 1500 W rating, SMC package (DO-214AB), higher capacitance (650 pF) | Higher power handling but 2.5× larger footprint and greater parasitic capacitance limits high-speed use | Prefer for industrial AC/DC input stages where surge energy exceeds 400 W but layout area is available |
Compared with SMAJ28A-E3/57T and 1.5SMC27A, VTVS28GSMF-M3-18 offers tighter ±2 % VBR tolerance, smaller DO-219AB footprint, lower 412 pF capacitance, and optional AEC-Q101 qualification - making it optimal for space-constrained, high-reliability 24 V DC systems requiring precise clamping and automotive-grade validation.
Availability
VTVS28GSMF-M3-18 is available at Aetrix Electronics and suitable for automotive infotainment power rails, industrial RS-485 interfaces, consumer USB VBUS hardening, and medical equipment power inputs requiring stable component supply across production lifecycles.
Supply support for VTVS28GSMF-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 TransZorb® eSMP® Series - including VTVS28GSMF-M3-18 - is engineered for robust transient suppression in compact, thermally efficient packages targeting AEC-Q101-compliant automotive subsystems and high-density industrial PCBs.
FAQ
What is the exact reverse breakdown voltage range for VTVS28GSMF-M3-18?
The VTVS28GSMF-M3-18 has a reverse breakdown voltage (VBR) range of 32.39 V to 33.72 V at IT = 1 mA and TJ = 25 °C, reflecting its ±2 % tolerance grade. This tight specification ensures consistent clamping behavior across production lots and supports precise overvoltage margin design in 24 V systems where VTVS28GSMF-M3-18 is commonly deployed.
Is VTVS28GSMF-M3-18 AEC-Q101 qualified?
VTVS28GSMF-M3-18 is offered in an AEC-Q101 qualified version (e.g., VTVS28GSMF-HM3-18), though the base part number VTVS28GSMF-M3-18 itself is not automatically qualified - qualification depends on the environmental and quality code suffix. Always verify the full ordering code and consult Vishay's official qualification reports for VTVS28GSMF-M3-18 compliance status.
What is the maximum clamping voltage of VTVS28GSMF-M3-18 under surge conditions?
The maximum reverse clamping voltage (VC) of VTVS28GSMF-M3-18 is 47 V at IPPM = 8.45 A with a 10/1000 μs waveform. This value represents the upper limit of voltage imposed on the protected line during worst-case transient events, directly enabling safe operation of downstream ICs rated for ≤48 V absolute maximum ratings when VTVS28GSMF-M3-18 is correctly applied.
Can VTVS28GSMF-M3-18 be used in bidirectional protection circuits?
No - VTVS28GSMF-M3-18 is a unidirectional TVS diode, intended only for DC line protection where polarity is fixed. For bidirectional AC or data-line protection, a dedicated bidirectional variant (e.g., VTVS28GSMF-BD) or back-to-back configuration would be required; using VTVS28GSMF-M3-18 in reverse-biased mode provides no clamping function and risks device failure.
What is the junction capacitance of VTVS28GSMF-M3-18 and how does it affect circuit design?
VTVS28GSMF-M3-18 exhibits 412 pF typical junction capacitance at VR = 0 V and f = 1 MHz. This value must be accounted for in high-speed signal paths - for example, placing VTVS28GSMF-M3-18 on a 250 kbps RS-485 bus requires careful trace length minimization and may necessitate series impedance tuning to maintain signal integrity, as confirmed in Vishay's application guidance for the VTVS28GSMF-M3-18 family.
VTVS28GSMF-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):
- 27.9V
- Voltage - Breakdown (Min):
- 32.39V
- Voltage - Clamping (Max) @ Ipp:
- 47V
- Current - Peak Pulse (10/1000µs):
- 8.45A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 412pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS28GSMF-M3-18 FAQ
1.How can I place an order for VTVS28GSMF-M3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS28GSMF-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 VTVS28GSMF-M3-18 reliable?
The price and inventory of VTVS28GSMF-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 VTVS28GSMF-M3-18 is usually 5 days.
3.What payment methods are accepted for VTVS28GSMF-M3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS28GSMF-M3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS28GSMF-M3-18?
VTVS28GSMF-M3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS28GSMF-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 VTVS28GSMF-M3-18?
For technical support, including VTVS28GSMF-M3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS28GSMF-M3-18 requirements.
6.How does Aetrix verify that VTVS28GSMF-M3-18 is sourced from the original manufacturer or authorized distributors?
All VTVS28GSMF-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 VTVS28GSMF-M3-18 meets industry standards.
7.What is the process for return or replacement of VTVS28GSMF-M3-18?
All VTVS28GSMF-M3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS28GSMF-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 VTVS28GSMF-M3-18 part is unused and in its original packaging.
Return procedure for VTVS28GSMF-M3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS28GSMF-M3-18 Tags
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