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Vishay General Semiconductor - Diodes Division VTVS43GSMF-M3-18
- Part No.:
- VTVS43GSMF-M3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS43GSMF-M3-18.pdf
- Description:
- TVS DIODE 43.2VWM 73VC DO219AB
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
VTVS43GSMF-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 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-M3-18 datasheet, VTVS43GSMF-M3-18 pinout, VTVS43GSMF-M3-18 application, or VTVS43GSMF-M3-18 equivalent, this device delivers precise clamping performance, IEC 61000-4-2 ±30 kV contact/air discharge compliance, and AEC-Q101 qualification - critical for automotive infotainment, ADAS sensor protection, and industrial I/O interface hardening.
Technical Context
This TVS diode operates in avalanche breakdown mode with fast response time (<1 ns) enabled by "Low-Noise" silicon technology. Its unidirectional polarity supports DC-biased signal lines where reverse conduction must be blocked until clamping threshold is exceeded.
The SMF package (DO-219AB) provides low thermal resistance (RthJL = 20 K/W) and compatibility with SOD-123W/SOD-123F footprints. It is halogen-free, MSL Level 1, and qualified per AEC-Q101 for automotive under-hood and cabin applications up to TJ = +175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 43.2 V - maximum continuous reverse operating voltage before clamping initiates |
| Breakdown Voltage (VBR) | 50.03–52.08 V at IT = 1 mA, ±2 % tolerance - ensures tight clamping threshold control |
| Peak Pulse Power (PPP) | 400 W at 10/1000 μs waveform - sustains high-energy transients without failure |
| Clamping Voltage (VC) | ≤73 V at IPPM = 5.39 A - limits downstream voltage stress during surge events |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - exceeds Level 4 immunity requirements |
| Junction Temperature Range | −55 °C to +175 °C - enables deployment in harsh automotive and industrial environments |
| Capacitance (CD) | 292 pF at VR = 0 V, f = 1 MHz - suitable for data lines up to ~100 Mbps with minimal signal distortion |
Pinout & Package
Package: SMF (DO-219AB), low-profile surface-mount case with cathode marking bar. Dimensions: 3.9 mm × 1.9 mm × 1.08 mm. Compatible with SOD-123W footprint and reflow/wave soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference node for unidirectional clamping | Connected to protected line; conducts only when reverse voltage exceeds VBR |
| Cathode | Clamping output terminal | Connected to ground or lower-potential rail; defines clamping path during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Handles high-energy surges (e.g., ISO 7637-2 Pulse 1/2a/5a) without degradation |
| ±2 % VBR tolerance | Enables tighter system-level voltage margin design vs. ±5 % variants like VTVS43ASMF |
| IEC 61000-4-2 ±30 kV ESD protection | Eliminates need for external ESD stages in USB 2.0, CAN FD, and LIN bus interfaces |
| AEC-Q101 qualification | Validated for automotive use including engine control modules, body electronics, and ADAS sensors |
| Halogen-free, MSL Level 1 | Supports lead-free reflow profiles up to 260 °C and meets RoHS/halogen-free compliance mandates |
Applications
| Automotive Sensor Interface Protection | USB 2.0 Data Line Protection |
|---|---|
Use Scenario: Protecting analog outputs of pressure, temperature, or position sensors in engine control units exposed to load dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between sensor signal line and chassis ground to clamp induced surges. Use Value: Maintains signal integrity below 73 V during 5.39 A transients while surviving −55 °C to +175 °C ambient operation. |
Use Scenario: Safeguarding D+ and D− lines of USB 2.0 ports in infotainment head units against ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Low-capacitance (292 pF) TVS on differential pair to suppress ±30 kV contact discharge without signal jitter. Use Value: Prevents PHY latch-up and data corruption while meeting USB-IF ESD robustness requirements. |
| HDMI Source Port Clamping | Industrial CAN Bus Node Protection |
Use Scenario: Clamping transient spikes on TMDS clock/data channels of HDMI source devices (e.g., media processors) in digital signage systems. IC Role / Device Role / Timing Role: Unidirectional TVS on each TMDS line referenced to ground, leveraging low clamping voltage to preserve eye diagram integrity. Use Value: Limits voltage overshoot to ≤73 V during fast-rising EFT bursts, preserving 1080p/60 Hz video timing margins. |
Use Scenario: Protecting CANH/CANL pins of microcontrollers in industrial PLC I/O modules subjected to cable-induced surges and ground bounce. IC Role / Device Role / Timing Role: Dual TVS configuration (one per line) with common ground reference to suppress common-mode transients up to 400 W. Use Value: Ensures CAN communication continuity during 10/1000 μs surges up to 73 A without bus lockup or node reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VTVS43ASMF-M3-18 | ±5 % VBR tolerance (6.4–7.0 V range for 5 V variant; for 43 V variant: VBR = 48.5–53.6 V), same package and PPP | Looser voltage margin; suitable for non-critical consumer interfaces where cost sensitivity outweighs precision clamping | Select when ±5 % VBR tolerance is acceptable and AEC-Q101 is not required |
| SMAJ43A | Same VRWM (43 V), but higher VC (≤69.4 V at 5.8 A), lower PPP (400 W), no AEC-Q101 qualification, SMA package (larger, higher inductance) | Less suitable for high-speed data lines due to higher parasitic inductance and lack of automotive qualification | Choose only for legacy PCBs using SMA footprint or non-automotive industrial designs requiring lower-cost alternatives |
Compared with VTVS43ASMF-M3-18 and SMAJ43A, the VTVS43GSMF-M3-18 offers tighter ±2 % clamping threshold control, AEC-Q101 qualification, and optimized SMF package for high-density layouts - making it preferred for next-generation automotive and high-reliability industrial interfaces.
Availability
VTVS43GSMF-M3-18 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial CAN bus nodes, USB 2.0 peripheral protection, and HDMI source port hardening requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for VTVS43GSMF-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® TVS family, including VTVS43GSMF-M3-18, is engineered specifically for robust ESD and surge protection in space-constrained, high-reliability applications - especially where AEC-Q101 qualification and precise clamping are mandatory.
FAQ
What is the clamping voltage of the VTVS43GSMF-M3-18 at its rated peak pulse current?
The VTVS43GSMF-M3-18 clamps to a maximum of 73 V at its rated peak pulse current of 5.39 A (10/1000 μs waveform). This value is specified in the Electrical Characteristics table of Vishay's Document Number 85891 and represents the upper limit of voltage seen by downstream circuitry during a full-power transient event. The VTVS43GSMF-M3-18 maintains this clamping performance across its full operating temperature range.
Is the VTVS43GSMF-M3-18 qualified for automotive applications?
Yes, the VTVS43GSMF-M3-18 is AEC-Q101 qualified, as confirmed in Vishay's Rev. 2.2 datasheet (Document Number 85891). This qualification validates its reliability under automotive-grade temperature cycling, humidity, mechanical shock, and lifetime stress testing. The VTVS43GSMF-M3-18 is routinely deployed in engine control units, ADAS camera modules, and infotainment systems where junction temperatures reach +175 °C.
What does the "G" in VTVS43GSMF-M3-18 indicate?
The "G" in VTVS43GSMF-M3-18 denotes ±2 % tolerance on the reverse breakdown voltage (VBR), distinguishing it from "A"-suffix variants (e.g., VTVS43ASMF-M3-18) which have ±5 % VBR tolerance. Per Vishay's ordering table, VTVS43GSMF-M3-18 has a VBR range of 50.03 V to 52.08 V at IT = 1 mA. This tighter tolerance directly improves system-level voltage margin predictability in precision protection designs.
Can the VTVS43GSMF-M3-18 be used in bidirectional signal paths?
No, the VTVS43GSMF-M3-18 is a unidirectional TVS diode and is not suitable for bidirectional AC-coupled or symmetrical signal paths. Its anode-to-cathode polarity allows conduction only during negative transients relative to the cathode reference. For bidirectional protection (e.g., RS-485, Ethernet), a dual-diode configuration or dedicated bidirectional TVS such as VTVS43BxxSMF would be required instead of the VTVS43GSMF-M3-18.
What is the moisture sensitivity level (MSL) rating for the VTVS43GSMF-M3-18?
The VTVS43GSMF-M3-18 carries an MSL Level 1 rating per J-STD-020, meaning it has unlimited floor life and may be stored indefinitely at ≤30 °C/60 % RH without baking prior to reflow. This is confirmed in the Package Data section of Vishay's datasheet (Rev. 2.2), and reflects the robustness of its halogen-free molding compound - a key advantage of the VTVS43GSMF-M3-18 in high-volume SMT manufacturing.
VTVS43GSMF-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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- 292pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS43GSMF-M3-18 FAQ
1.How can I place an order for VTVS43GSMF-M3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS43GSMF-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 VTVS43GSMF-M3-18 reliable?
The price and inventory of VTVS43GSMF-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 VTVS43GSMF-M3-18 is usually 5 days.
3.What payment methods are accepted for VTVS43GSMF-M3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS43GSMF-M3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS43GSMF-M3-18?
VTVS43GSMF-M3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS43GSMF-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 VTVS43GSMF-M3-18?
For technical support, including VTVS43GSMF-M3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS43GSMF-M3-18 requirements.
6.How does Aetrix verify that VTVS43GSMF-M3-18 is sourced from the original manufacturer or authorized distributors?
All VTVS43GSMF-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 VTVS43GSMF-M3-18 meets industry standards.
7.What is the process for return or replacement of VTVS43GSMF-M3-18?
All VTVS43GSMF-M3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS43GSMF-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 VTVS43GSMF-M3-18 part is unused and in its original packaging.
Return procedure for VTVS43GSMF-M3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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