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Vishay General Semiconductor - Diodes Division VTVS19GSMF-HM3-08
- Part No.:
- VTVS19GSMF-HM3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS19GSMF-HM3-08.pdf
- Description:
- TVS DIODE 18.7VWM 31VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,640
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Product details
Overview
VTVS19GSMF-HM3-08 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 signal lines. It features a 18.7 V maximum stand-off voltage (VRWM), 21.61–22.50 V reverse breakdown voltage (VBR) at 1 mA, 31 V maximum clamping voltage (VC) at 12.84 A peak pulse current, and ±30 kV IEC 61000-4-2 ESD immunity-used in automotive infotainment data lines.
For engineers reviewing the VTVS19GSMF-HM3-08 datasheet, VTVS19GSMF-HM3-08 pinout, VTVS19GSMF-HM3-08 application, or VTVS19GSMF-HM3-08 equivalent, key selection criteria include its ±2 % VBR tolerance, 558 pF typical junction capacitance at 0 V, 175 °C max junction temperature, halogen-free construction, and AEC-Q101 qualification status.
Technical Context
This device operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its precisely specified breakdown range (21.61–22.50 V). Its low-clamping performance (VC = 31 V @ IPPM = 12.84 A) ensures robust protection of downstream ICs during 10/1000 μs transients.
The SMF package enables high-density PCB layout with wave and reflow solder compatibility, while its MSL level 1 rating and 260 °C peak reflow tolerance support automated assembly. The 558 pF capacitance is optimized for USB 2.0 and CAN FD signal integrity without compromising protection speed.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400 W (10/1000 μs waveform; sustains automotive load-dump surges) |
| Stand-off Voltage (VRWM) | 18.7 V (maximum continuous reverse voltage before conduction begins) |
| Breakdown Voltage (VBR) | 21.61–22.50 V @ IT = 1 mA (±2 % tolerance; tight regulation for precise threshold control) |
| Clamping Voltage (VC) | 31 V @ IPPM = 12.84 A (limits voltage seen by protected IC during surge) |
| Junction Capacitance | 558 pF @ VR = 0 V, f = 1 MHz (compatible with 480 Mbps USB 2.0 signaling) |
| ESD Rating | ±30 kV contact / ±30 kV air (IEC 61000-4-2 Level 4; eliminates external ESD diodes) |
| Operating Temperature | −55 °C to +175 °C (supports under-hood automotive deployment) |
| Package | SMF (DO-219AB); 3.9 × 1.9 × 1.08 mm (low-profile SMD footprint for space-constrained modules) |
Pinout & Package
SMF (DO-219AB) package: surface-mount, unidirectional diode with cathode marked by bar on top surface. Dimensions: 3.9 mm length × 1.9 mm width × 1.08 mm height. Compatible with SOD-123W outline and standard 8 mm tape/reel handling (EIA-481).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (pin 1) | Input side of protected line | Connected to signal source or connector; carries surge current into diode junction |
| Cathode (pin 2) | Ground reference node | Connected to system ground plane; completes clamping path during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % VBR tolerance | Enables tighter system-level voltage margining vs. ±5 % variants (e.g., VTVS19ASMF) |
| AEC-Q101 qualified | Validated for automotive applications including powertrain and body electronics |
| Halogen-free & RoHS-compliant | Meets automotive OEM material compliance requirements (e.g., GMW3172, Ford WSS-M99P9999-A1) |
| Low-noise fast response | Sub-nanosecond turn-on time protects high-speed interfaces like CAN FD and LIN without signal distortion |
| MSL level 1 rating | Unlimited floor life; no baking required prior to reflow assembly |
| 175 °C TJ max | Supports placement near heat sources (e.g., power converters) in engine control units |
Applications
| Automotive Infotainment | Industrial CAN Bus Nodes |
|---|---|
|
Use Scenario: Protecting USB 2.0 data lines in head unit docking connectors against ESD from user interaction. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between USB D+ and chassis ground. Use Value: 558 pF capacitance avoids signal rise-time degradation; ±30 kV ESD rating eliminates need for secondary protection stages. |
Use Scenario: Safeguarding CAN_H/CAN_L differential pair in factory automation PLC I/O modules exposed to cable discharge events. IC Role / Device Role / Timing Role: Dual-channel discrete TVS (one per line) referenced to common ground. Use Value: 31 V clamping voltage ensures CAN transceiver (e.g., TJA1042) remains within absolute max ratings during 1 kV/50 Ω surge tests. |
| Automotive Body Control Module | Medical Sensor Interface |
|
Use Scenario: Shielding LIN bus lines in door module ECUs from battery transients and ESD during service. IC Role / Device Role / Timing Role: Single unidirectional TVS on LIN signal line, anode to LIN, cathode to ground. Use Value: 18.7 V VRWM allows full operation across 12 V system range (9–16 V), while 175 °C rating supports under-dash mounting. |
Use Scenario: Protecting analog front-end inputs of patient monitoring devices connected to disposable sensors via shielded cables. IC Role / Device Role / Timing Role: Low-capacitance TVS on each sensor input channel to prevent ESD-induced ADC latch-up. Use Value: 558 pF capacitance minimizes loading on high-impedance sensor outputs (<100 kΩ), preserving DC accuracy and noise floor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VTVS19ASMF-HM3-08 | ±5 % VBR tolerance (20.9–23.2 V) vs. ±2 % for VTVS19GSMF-HM3-08 | Suitable where looser voltage margin is acceptable (e.g., non-safety-critical consumer ports) | Select VTVS19ASMF-HM3-08 for cost-sensitive designs not requiring AEC-Q101 or tight VBR control |
| SMAJ19A-E3/5AT | Higher clamping voltage (33.2 V @ 12.3 A); same 400 W rating but lower surge current capability | Used in industrial power supplies where PCB space allows larger SMA package | Choose SMAJ19A-E3/5AT only if SMF footprint is unavailable and 2.2 V higher VC is tolerable |
Compared with VTVS19ASMF-HM3-08 and SMAJ19A-E3/5AT, VTVS19GSMF-HM3-08 delivers tighter voltage control, automotive qualification, and superior capacitance-to-power ratio-making it optimal for high-reliability, space-constrained, high-speed signal protection.
Availability
VTVS19GSMF-HM3-08 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial CAN bus nodes, and medical sensor interfaces requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for VTVS19GSMF-HM3-08 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 optoelectronics for automotive, industrial, and computing markets.
The TransZorb® eSMP® series-including VTVS19GSMF-HM3-08-is engineered for high-speed transient suppression in harsh environments, with emphasis on AEC-Q101 compliance, low capacitance, and compact SMD packaging.
FAQ
What is the exact breakdown voltage range for VTVS19GSMF-HM3-08?
The VTVS19GSMF-HM3-08 has a reverse breakdown voltage (VBR) of 21.61 V minimum to 22.50 V maximum at IT = 1 mA and TJ = 25 °C, reflecting its ±2 % tolerance grade. This tight specification ensures predictable clamping behavior in precision voltage rail protection circuits and is confirmed in Vishay's Document Number 85891, Rev. 2.2.
Is VTVS19GSMF-HM3-08 qualified for automotive use?
Yes, VTVS19GSMF-HM3-08 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 is explicitly stated in the "FEATURES" section of the Vishay datasheet (Document Number 85891) and applies to the HM3-08 variant.
What does the "HM3-08" suffix indicate in VTVS19GSMF-HM3-08?
The "HM3-08" suffix denotes halogen-free (H), lead-free tin-plated terminations (M), 3 k per 7″ reel packaging (3), and RoHS-compliant environmental coding (08). This matches Vishay's ordering nomenclature in the "ORDERING INFORMATION" table of Document Number 85891, confirming full regulatory compliance and standard SMT handling compatibility.
Can VTVS19GSMF-HM3-08 be used in bidirectional signal lines?
No, VTVS19GSMF-HM3-08 is a unidirectional TVS diode and must be used only on circuits with defined polarity-such as single-ended signals referenced to ground. For bidirectional protection (e.g., RS-485, USB D+/D−), a dedicated bidirectional TVS like VTVS19B or dual-unidirectional configuration is required; this limitation is inherent to its internal structure and specified in the "Polarity" field of the datasheet.
What is the thermal resistance (RthJL) of VTVS19GSMF-HM3-08?
The thermal resistance from junction to lead (RthJL) for VTVS19GSMF-HM3-08 is 20 K/W when mounted on an infinite heat sink, as specified in the "ABSOLUTE MAXIMUM RATINGS" table of Document Number 85891. This value enables accurate junction temperature estimation during surge events and confirms suitability for high-temperature automotive environments up to 175 °C.
VTVS19GSMF-HM3-08 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):
- 18.7V
- Voltage - Breakdown (Min):
- 21.61V
- Voltage - Clamping (Max) @ Ipp:
- 31V
- Current - Peak Pulse (10/1000µs):
- 12.84A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 558pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS19GSMF-HM3-08 FAQ
1.How can I place an order for VTVS19GSMF-HM3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS19GSMF-HM3-08 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 VTVS19GSMF-HM3-08 reliable?
The price and inventory of VTVS19GSMF-HM3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VTVS19GSMF-HM3-08 is usually 5 days.
3.What payment methods are accepted for VTVS19GSMF-HM3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS19GSMF-HM3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS19GSMF-HM3-08?
VTVS19GSMF-HM3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS19GSMF-HM3-08 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 VTVS19GSMF-HM3-08?
For technical support, including VTVS19GSMF-HM3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS19GSMF-HM3-08 requirements.
6.How does Aetrix verify that VTVS19GSMF-HM3-08 is sourced from the original manufacturer or authorized distributors?
All VTVS19GSMF-HM3-08 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 VTVS19GSMF-HM3-08 meets industry standards.
7.What is the process for return or replacement of VTVS19GSMF-HM3-08?
All VTVS19GSMF-HM3-08 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS19GSMF-HM3-08, 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 VTVS19GSMF-HM3-08 part is unused and in its original packaging.
Return procedure for VTVS19GSMF-HM3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS19GSMF-HM3-08 Tags
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