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Vishay General Semiconductor - Diodes Division VTVS40GSMF-HM3-18
- Part No.:
- VTVS40GSMF-HM3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS40GSMF-HM3-18.pdf
- Description:
- TVS DIODE 39.6VWM 67VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,972
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Product details
Overview
VTVS40GSMF-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 39.6 V stand-off voltage (VRWM), 46.11–48.00 V reverse breakdown voltage (VBR) at 1 mA, and clamps to ≤67 V at 5.87 A peak pulse current under 10/1000 μs waveform.
For engineers reviewing the VTVS40GSMF-HM3-18 datasheet, VTVS40GSMF-HM3-18 pinout, VTVS40GSMF-HM3-18 application, or VTVS40GSMF-HM3-18 equivalent, this device delivers ±2 % VBR tolerance, ±30 kV IEC 61000-4-2 ESD immunity, halogen-free construction, and AEC-Q101 qualification - critical for automotive infotainment and ADAS signal line hardening.
Technical Context
This TVS diode operates in avalanche mode to clamp transients above its breakdown threshold while maintaining low leakage (<0.05 μA at VRWM) and fast response time enabled by "Low-Noise" technology. Its unidirectional polarity supports DC-biased lines where reverse conduction must be blocked until clamping occurs.
The SMF package (DO-219AB) provides 1.08 mm height, 3.9 mm length, and 1.9 mm width with MSL level 1 moisture sensitivity and 260 °C reflow compatibility. Thermal resistance from junction to lead is 20 K/W when mounted on an infinite heat sink.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 39.6 V - maximum continuous reverse operating voltage before clamping begins |
| Breakdown Voltage (VBR) | 46.11–48.00 V at 1 mA - tight ±2 % tolerance ensures predictable turn-on across temperature and production lots |
| Peak Pulse Power (PPP) | 400 W at 10/1000 μs - sustains high-energy surges without failure in automotive load-dump or ISO 7637-2 scenarios |
| Clamping Voltage (VC) | ≤67 V at IPPM = 5.87 A - limits downstream IC stress during transient events per IEC 61000-4-5 |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - protects against human-body-model and system-level ESD events |
| Junction Temperature Range | −55 °C to +175 °C - supports under-hood automotive deployment and industrial ambient extremes |
| Capacitance (CD) | 309 pF at 0 V, 1 MHz - low enough for USB 2.0 and CAN FD signal integrity, but not suitable for >100 MHz RF paths |
Pinout & Package
Package: SMF (DO-219AB), surface-mount, unidirectional, cathode-marked with bar on top surface. Dimensions: 3.9 mm × 1.9 mm × 1.08 mm (L × W × H). Compatible with SOD-123W footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference node for clamping path | Connected to protected line's low-side or ground return; defines directionality of suppression |
| Cathode | Clamping output terminal | Connected to power rail or higher-potential reference; conducts avalanche current during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % VBR tolerance | Enables precise coordination with downstream IC absolute maximum ratings without margin overdesign |
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| Halogen-free & RoHS-compliant | Meets automotive OEM material compliance requirements (e.g., GMW3172, Ford WSS-M99P9999-A1) |
| Low-profile SMF package | 1.08 mm height enables placement in space-constrained modules like camera ECUs and radar front-ends |
| Wave/reflow solderable | Supports automated assembly with JEDEC J-STD-020 Class 2 profile up to 260 °C peak temperature |
Applications
| Automotive Sensor Interface | USB 2.0 Data Line Protection |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver I/O pins from battery dump and ESD in door module ECUs. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between transceiver pin and ground. Use Value: Limits voltage excursion to ≤67 V during 5.87 A surge, preserving transceiver integrity per ISO 16750-2 pulse 5a. |
Use Scenario: Safeguarding USB D+/D− lines in infotainment head units against hot-plug and ESD events. IC Role / Device Role / Timing Role: Low-capacitance TVS placed inline with data traces to minimize signal distortion. Use Value: 309 pF capacitance maintains USB 2.0 eye diagram integrity while delivering ±30 kV contact ESD protection. |
| Industrial RS-485 Port | Automotive Camera Power Line |
Use Scenario: Shielding RS-485 transceivers in factory automation controllers from lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on differential bus lines referenced to local ground. Use Value: 400 W peak power rating handles 10/1000 μs surges per IEC 61000-4-5 Level 4 without degradation. |
Use Scenario: Hardening 12 V power input to rear-view camera modules against load dump transients. IC Role / Device Role / Timing Role: Unidirectional TVS between power rail and chassis ground. Use Value: Clamps 12 V supply to ≤67 V during 5.87 A surge, preventing damage to image sensor and serializer ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ40A-E3/57T | ±5 % VBR tolerance (42.2–46.8 V), 400 W PPP, SMA package (DO-214AC), 1.5 mm height | Higher VBR variation increases risk of premature clamping in precision 3.3/5 V logic rails | Select when cost priority outweighs tight VBR control and board height is not constrained |
| TPSMD40A | ±5 % VBR (42.2–46.8 V), 400 W PPP, SMC package (DO-214AB), 2.6 mm height | Larger footprint and height limit use in ultra-thin modules; lower thermal resistance (15 K/W) | Prefer for high-reliability industrial designs where PCB area allows and thermal dissipation is critical |
Compared with VTVS40GSMF-HM3-18, SMAJ40A-E3/57T offers lower cost but looser VBR control and taller profile, while TPSMD40A trades compactness for superior thermal performance - making VTVS40GSMF-HM3-18 optimal for automotive space- and tolerance-sensitive layouts.
Availability
VTVS40GSMF-HM3-18 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial communication ports, and camera module power inputs requiring stable component supply with AEC-Q101 assurance and halogen-free compliance.
Supply support for VTVS40GSMF-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, including VTVS40GSMF-HM3-18, is engineered for robust transient suppression in harsh environments - particularly targeting automotive signal and power line protection with AEC-Q101 validation and low-profile packaging.
FAQ
What is the exact breakdown voltage range for VTVS40GSMF-HM3-18?
The VTVS40GSMF-HM3-18 has a reverse breakdown voltage (VBR) of 46.11 V minimum to 48.00 V maximum at IT = 1 mA and TJ = 25 °C, with ±2 % tolerance confirmed in Vishay's Rev. 2.2 datasheet (Doc. #85891). This tight tolerance ensures consistent clamping behavior across production batches and temperature ranges.
Is VTVS40GSMF-HM3-18 qualified for automotive use?
Yes, VTVS40GSMF-HM3-18 is AEC-Q101 qualified, meaning it has passed stress tests for temperature cycling, humidity bias, mechanical shock, and ESD required for automotive electronic components. This qualification applies specifically to the VTVS40GSMF-HM3-18 variant as documented in the Vishay TransZorb® family datasheet.
What does the "HM3-18" suffix indicate in VTVS40GSMF-HM3-18?
The "HM3-18" suffix denotes halogen-free (H), tape-and-reel packaging with 3K units per 7″ reel (M3), and a date code format ending in "18" (indicating 2018 or week/year interpretation per Vishay's coding convention). This matches the ordering structure defined in the VTVS3V3ASMF–VTVS63GSMF datasheet table.
Can VTVS40GSMF-HM3-18 be used in bidirectional protection circuits?
No, VTVS40GSMF-HM3-18 is a unidirectional TVS diode and is not suitable for bidirectional AC or symmetrical signal line protection. Its design clamps only in reverse bias; for bidirectional applications such as telecom lines or AC-coupled interfaces, a dedicated bidirectional part like VTVS40BGMF-HM3-18 would be required.
What is the thermal resistance and maximum junction temperature of VTVS40GSMF-HM3-18?
VTVS40GSMF-HM3-18 has a thermal resistance RthJL of 20 K/W when mounted on an infinite heat sink, and its maximum junction temperature (TJ) is rated at +175 °C. These values are specified in the Absolute Maximum Ratings table of the Vishay datasheet and enable operation in under-hood automotive environments.
VTVS40GSMF-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):
- 39.6V
- Voltage - Breakdown (Min):
- 46.11V
- Voltage - Clamping (Max) @ Ipp:
- 67V
- Current - Peak Pulse (10/1000µs):
- 5.87A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 309pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS40GSMF-HM3-18 FAQ
1.How can I place an order for VTVS40GSMF-HM3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS40GSMF-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 VTVS40GSMF-HM3-18 reliable?
The price and inventory of VTVS40GSMF-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 VTVS40GSMF-HM3-18 is usually 5 days.
3.What payment methods are accepted for VTVS40GSMF-HM3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS40GSMF-HM3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS40GSMF-HM3-18?
VTVS40GSMF-HM3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS40GSMF-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 VTVS40GSMF-HM3-18?
For technical support, including VTVS40GSMF-HM3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS40GSMF-HM3-18 requirements.
6.How does Aetrix verify that VTVS40GSMF-HM3-18 is sourced from the original manufacturer or authorized distributors?
All VTVS40GSMF-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 VTVS40GSMF-HM3-18 meets industry standards.
7.What is the process for return or replacement of VTVS40GSMF-HM3-18?
All VTVS40GSMF-HM3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS40GSMF-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 VTVS40GSMF-HM3-18 part is unused and in its original packaging.
Return procedure for VTVS40GSMF-HM3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS40GSMF-HM3-18 Tags
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