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Vishay General Semiconductor - Diodes Division VTVS43GSMF-HM3-18
- Part No.:
- VTVS43GSMF-HM3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS43GSMF-HM3-18.pdf
- Description:
- TVS DIODE 43.2VWM 73VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,240
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Product details
Overview
VTVS43GSMF-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 such as USB, HDMI, and automotive sensor interfaces. It features 43.2 V stand-off voltage (VRWM), ±2 % breakdown voltage tolerance (VBR = 50.03–52.08 V at IT = 1 mA), 73 A peak pulse current (10/1000 μs), and clamps to ≤73 V at rated IPPM.
For engineers reviewing the VTVS43GSMF-HM3-18 datasheet, VTVS43GSMF-HM3-18 pinout, VTVS43GSMF-HM3-18 application, or VTVS43GSMF-HM3-18 equivalent, key selection criteria include its 43.2 V working voltage compatibility with 3.3 V/5 V logic rails, ±30 kV IEC 61000-4-2 ESD immunity, halogen-free SOD-123W-compatible footprint, and AEC-Q101 qualification status.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its precisely specified breakdown range (50.03–52.08 V). Its low dynamic impedance ensures rapid clamping response (<1 ns), limiting transient energy delivered to downstream circuitry during ESD or lightning-induced surges.
The device is optimized for surface-mount reflow soldering per J-STD-020 MSL level 1, with thermal resistance RthJL = 20 K/W to leads and maximum junction temperature of +175 °C - enabling robust operation in automotive under-hood and industrial control environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 43.2 V - maximum continuous reverse operating voltage before conduction begins; matches 3.3 V/5 V rail protection with safety margin. |
| Breakdown Voltage (VBR) | 50.03–52.08 V at IT = 1 mA, ±2 % tolerance - enables precise overvoltage threshold setting without calibration. |
| Peak Pulse Power (PPP) | 400 W at 10/1000 μs waveform - sustains high-energy transients common in automotive load-dump and industrial switching noise. |
| Clamping Voltage (VC) | ≤73 V at IPPM = 5.39 A - limits protected node voltage to safe levels for 3.3 V/5 V ICs during surge events. |
| Capacitance (CD) | 292 pF at VR = 0 V, f = 1 MHz - low enough for USB 2.0 and CAN FD signal integrity, but not suitable for >100 MHz high-speed interfaces. |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - exceeds Level 4 immunity requirements for automotive infotainment and body electronics. |
| Operating Temperature | −55 °C to +175 °C - supports placement near engines, power converters, and other high-temperature zones. |
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 | Input/protected line connection | Connected to signal or power line requiring transient suppression; referenced to system ground via cathode. |
| Cathode | Ground reference terminal | Must be connected to low-impedance system ground plane to ensure effective clamping; polarity-sensitive - reverse connection disables protection. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Handles high-energy surges from inductive switching or load dump without degradation - critical for automotive power-line protection. |
| ±2 % VBR tolerance (G-series) | Enables tighter design margins vs. ±5 % A-series variants, reducing need for derating in precision voltage-rail protection. |
| IEC 61000-4-2 ±30 kV ESD immunity | Eliminates need for external ESD staging components in consumer and automotive USB/HDMI ports. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock - suitable for ASIL-B systems. |
| Halogen-free, RoHS-compliant, MSL level 1 | Supports lead-free reflow assembly without moisture-related popcorning; meets global environmental compliance mandates. |
Applications
| Automotive Sensor Interface | USB 2.0 Data Line Protection |
|---|---|
Use Scenario: Protecting LIN/CAN sensor nodes (e.g., wheel speed, pressure sensors) from battery transients and ESD during service. IC Role / Device Role / Timing Role: Unidirectional voltage clamp placed between signal line and chassis ground. Use Value: Maintains 43.2 V VRWM compatibility with 12 V automotive supply while clamping surges to ≤73 V - preserving sensor IC input stage integrity. |
Use Scenario: Safeguarding USB 2.0 D+/D− lines against ESD events during hot-plug insertion in automotive head units or industrial HMIs. IC Role / Device Role / Timing Role: Low-capacitance (292 pF) bidirectional-capable unidirectional TVS on each data line. Use Value: Delivers ±30 kV IEC 61000-4-2 immunity without distorting 480 Mbps data eye - verified for full-speed USB compliance. |
| Industrial PLC Digital Input | DC Power Rail Surge Suppression |
Use Scenario: Shielding 24 V digital input modules from field-wiring induced surges and relay coil flyback in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff-rated TVS across input terminals to divert transients before optocoupler input stage. Use Value: Withstands repeated 400 W pulses without parameter shift - extends maintenance intervals in harsh electromagnetic environments. |
Use Scenario: Clamping 48 V DC power distribution lines in telecom equipment exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp mounted directly at power entry point, upstream of DC/DC converter. Use Value: Limits voltage excursion to ≤73 V during 10/1000 μs surges - preventing damage to downstream regulators rated for <80 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 |
|---|---|---|---|
| SMAJ43A-E3/57T | ±5 % VBR tolerance (45.2–49.8 V), same 400 W PPP, SMA package (larger than SMF) | Higher VBR variation requires larger design margin; SMA footprint increases board area by ~40 % | Select when cost sensitivity outweighs space constraints and ±5 % tolerance is acceptable. |
| TPSMD43A | Same 43 V VRWM, ±5 % VBR, but higher clamping voltage (VC = 77.4 V), DO-214AB package | Less effective clamping margin for 3.3 V/5 V ICs; larger thermal mass slows response slightly | Prefer only if existing SMA footprint reuse is required and VC margin allows. |
Compared with SMAJ43A-E3/57T and TPSMD43A, VTVS43GSMF-HM3-18 offers tighter ±2 % VBR control, smaller SMF footprint, lower clamping voltage (73 V vs. ≥77.4 V), and AEC-Q101 qualification - making it optimal for space-constrained, high-reliability automotive and industrial designs.
Availability
VTVS43GSMF-HM3-18 is available at Aetrix Electronics and suitable for automotive sensor protection, USB interface hardening, industrial PLC inputs, and 48 V DC power rail surge suppression requiring stable component supply across multi-year production cycles.
Supply support for VTVS43GSMF-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, and passive components for automotive, industrial, and computing markets.
The VTVS eSMP® Series delivers compact, high-power TVS diodes optimized for ESD and surge protection in space-constrained, high-temperature applications - particularly targeting AEC-Q101-compliant automotive subsystems and ruggedized industrial controls.
FAQ
What is the exact breakdown voltage range for VTVS43GSMF-HM3-18?
The VTVS43GSMF-HM3-18 has a reverse breakdown voltage (VBR) of 50.03 V minimum to 52.08 V maximum at IT = 1 mA and TJ = 25 °C, with ±2 % tolerance confirmed in Vishay's Rev. 2.2 datasheet (Document Number: 85891). This tight tolerance ensures consistent clamping behavior across production lots and temperature ranges.
Is VTVS43GSMF-HM3-18 suitable for bidirectional signal lines like RS-485?
No - VTVS43GSMF-HM3-18 is a unidirectional TVS diode and must be used with correct polarity: anode to signal line, cathode to ground. For bidirectional protection (e.g., RS-485), a pair of VTVS43GSMF-HM3-18 devices in opposing configuration or a dedicated bidirectional TVS such as VTVS43GBSMF-HM3-18 is required.
Does VTVS43GSMF-HM3-18 meet AEC-Q101 requirements?
Yes - the "H" in the suffix VTVS43GSMF-HM3-18 explicitly denotes AEC-Q101 qualification per Vishay's ordering information table. This includes stress testing for temperature cycling, high-temperature reverse bias, and mechanical shock - validating suitability for automotive under-hood and chassis applications.
What is the thermal resistance and maximum junction temperature of VTVS43GSMF-HM3-18?
VTVS43GSMF-HM3-18 has a thermal resistance RthJL of 20 K/W (junction-to-lead, mounted on infinite heat sink) and a maximum junction temperature (TJ) of +175 °C. These values enable reliable operation in high-ambient environments such as engine control units or industrial motor drives when properly heatsinked via PCB copper pour.
How does the capacitance of VTVS43GSMF-HM3-18 affect high-speed data lines?
VTVS43GSMF-HM3-18 exhibits 292 pF typical capacitance at VR = 0 V and f = 1 MHz. This value is appropriate for USB 2.0 (480 Mbps) and CAN FD (5 Mbps) but may degrade signal integrity on PCIe Gen3+ or HDMI 2.0+ links; for those, lower-capacitance TVS variants (e.g., <5 pF) are recommended instead of VTVS43GSMF-HM3-18.
VTVS43GSMF-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):
- 43.2V
- Voltage - Breakdown (Min):
- 50.03V
- Voltage - Clamping (Max) @ Ipp:
- 73V
- Current - Peak Pulse (10/1000µs):
- 5.39A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 292pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS43GSMF-HM3-18 FAQ
1.How can I place an order for VTVS43GSMF-HM3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS43GSMF-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 VTVS43GSMF-HM3-18 reliable?
The price and inventory of VTVS43GSMF-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 VTVS43GSMF-HM3-18 is usually 5 days.
3.What payment methods are accepted for VTVS43GSMF-HM3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS43GSMF-HM3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS43GSMF-HM3-18?
VTVS43GSMF-HM3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS43GSMF-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 VTVS43GSMF-HM3-18?
For technical support, including VTVS43GSMF-HM3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS43GSMF-HM3-18 requirements.
6.How does Aetrix verify that VTVS43GSMF-HM3-18 is sourced from the original manufacturer or authorized distributors?
All VTVS43GSMF-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 VTVS43GSMF-HM3-18 meets industry standards.
7.What is the process for return or replacement of VTVS43GSMF-HM3-18?
All VTVS43GSMF-HM3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS43GSMF-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 VTVS43GSMF-HM3-18 part is unused and in its original packaging.
Return procedure for VTVS43GSMF-HM3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS43GSMF-HM3-18 Tags
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