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Vishay General Semiconductor - Diodes Division VTVS9V4ASMF-M3-18
- Part No.:
- VTVS9V4ASMF-M3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS9V4ASMF-M3-18.pdf
- Description:
- TVS DIODE 9.4VWM 14.9VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,556
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Product details
Overview
VTVS9V4ASMF-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 9.4 V stand-off voltage (VRWM), 10.5–11.6 V reverse breakdown voltage (VBR) at 1 mA, 14.9 V maximum clamping voltage (VC) at 25.48 A peak pulse current, and ±30 kV IEC 61000-4-2 ESD immunity - deployed in automotive infotainment power rails and USB Type-C port protection.
For engineers reviewing the VTVS9V4ASMF-M3-18 datasheet, VTVS9V4ASMF-M3-18 pinout, VTVS9V4ASMF-M3-18 application, or VTVS9V4ASMF-M3-18 equivalent, this page delivers verified electrical specs, SMF package dimensions, clamping performance under 10/1000 μs transients, thermal limits up to 175 °C junction temperature, and halogen-free compliance per Vishay Doc. 99912 - critical for automotive AEC-Q101-qualified designs and industrial I/O interface hardening.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: when line voltage exceeds VRWM = 9.4 V, it avalanches at VBR = 10.5–11.6 V (±5 % tolerance), limiting transient energy with VC = 14.9 V at IPPM = 25.48 A (10/1000 μs). Its low 1.08 mm height and SOD-123W-compatible footprint enable space-constrained placement near connectors.
Thermal resistance RthJL = 20 K/W (mounted on infinite heat sink) supports sustained operation at TJ = –55 °C to +175 °C, while MSL Level 1 moisture sensitivity and reflow compatibility (peak 260 °C) ensure robust manufacturability. The device's 1130 pF capacitance at 0 V enables use in <10 Mbps signal lines without signal integrity degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 9.4 V - maximum continuous DC or RMS voltage the diode blocks without conduction; sets operating margin before clamping onset. |
| Breakdown Voltage (VBR) | 10.5–11.6 V at IT = 1 mA - precise avalanche threshold defining clamping initiation point with ±5 % tolerance. |
| Clamping Voltage (VC) | 14.9 V at IPPM = 25.48 A (10/1000 μs) - peak voltage seen by protected circuit during worst-case surge; determines downstream component stress. |
| Peak Pulse Power (PPP) | 400 W - maximum transient energy dissipation capability under standardized 10/1000 μs waveform; defines surge survivability rating. |
| ESD Immunity | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - ensures robustness against human-body-model and system-level electrostatic discharges. |
| Junction Temperature Range | –55 °C to +175 °C - enables deployment in under-hood automotive, industrial motor drives, and outdoor power electronics. |
| Capacitance (CD) | 1130 pF at VR = 0 V, f = 1 MHz - low enough for USB 2.0 and RS-485 data lines; high enough to absorb fast transients without resonance issues. |
Pinout & Package
SMF (DO-219AB) package: low-profile surface-mount case with cathode marking bar; compatible with SOD-123W footprint; dimensions: 3.9 × 1.9 × 1.08 mm (L × W × H); halogen-free molding compound; UL 94 V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward bias or surge conduction path | Connected to protected line (e.g., USB VBUS); must be routed with minimal inductance to maintain clamping speed. |
| Cathode | Current exit terminal; marked with bar on top surface | Connected to ground or low-impedance return path; determines unidirectional clamping polarity and ESD discharge direction. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Enables single-device protection against ISO 7637-2 Pulse 1/2a/3a surges in 12 V automotive systems without external series impedance. |
| ±30 kV IEC 61000-4-2 ESD immunity | Eliminates need for secondary ESD stages in consumer and automotive interfaces, reducing BOM count and PCB area. |
| Low-profile SMF (DO-219AB) package | 1.08 mm height allows placement beneath connectors or in tight board-to-board spacing; compatible with automated SMT assembly. |
| 1130 pF capacitance at 0 V | Preserves signal integrity on 480 Mbps USB 2.0 lines while providing sufficient coupling for fast transient suppression. |
| AEC-Q101 qualified option available | Supports qualification-critical applications such as ADAS camera modules and infotainment head units without additional reliability testing. |
Applications
| Automotive Infotainment Power Rail Protection | USB Type-C Port ESD Hardening |
|---|---|
|
Use Scenario: Protecting 9–12 V supply lines feeding LCD displays, audio amplifiers, and touch controllers in vehicle head units from load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional shunt TVS that clamps overvoltage events within nanoseconds, diverting surge current to chassis ground before downstream LDOs or PMICs are damaged. Use Value: With VRWM = 9.4 V and VC = 14.9 V, it maintains safe margin below 16 V automotive system max while limiting stress on 16 V-rated input capacitors. |
Use Scenario: Safeguarding USB Type-C CC, VCONN, and VBUS pins against hot-plug ESD and cable-induced surges in docking stations and portable accessories. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) clamping diode placed directly at connector, acting as first-line defense before signal conditioning ICs. Use Value: 1130 pF capacitance avoids USB 2.0 eye diagram distortion, while ±30 kV ESD rating meets IEC 61000-4-2 Level 4 requirements for end-product certification. |
| Industrial Sensor Interface Protection | POS Terminal Power Input Protection |
|
Use Scenario: Shielding 24 V DC-powered analog sensor inputs (e.g., 4–20 mA loops, RTD bridges) from induced lightning surges and relay coil flyback in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between signal line and local ground, absorbing multi-kV transients without leakage or latch-up. Use Value: TJ = –55 °C to +175 °C rating ensures stable clamping performance across wide ambient ranges, critical for uncooled enclosures in harsh environments. |
Use Scenario: Securing 12 V/24 V power inputs of point-of-sale terminals against AC line transients, capacitor discharge events, and accidental short-circuits during field service. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power rail, coordinated with upstream fuse and downstream buck converter to limit fault energy. Use Value: 400 W PPP rating handles repetitive 10/1000 μs surges per IEC 61000-4-5 Level 3, enabling compliance without oversized heatsinking or redundant devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A | Higher VRWM = 9.0 V, lower VC = 14.4 V at 25.5 A, same SMF package but ±5 % VBR tolerance and 1000 pF capacitance. | Better suited for tighter 9 V system margins; slightly lower clamping improves downstream IC safety margin. | Select SMAJ9.0A if VRWM margin must exceed 0.4 V above nominal 9 V rail; verify layout compatibility with identical DO-219AB footprint. |
| 1.5SMC9.0A | Higher PPP = 1500 W, larger SMC (DO-214AB) package (7.1 × 6.2 × 2.3 mm), VRWM = 9.0 V, VC = 15.4 V at 97.4 A. | Targeted at higher-energy surges (e.g., ISO 16750-2); requires more PCB area and different thermal management. | Choose 1.5SMC9.0A only when 400 W is insufficient and board space permits larger SMC package; not drop-in due to size and thermal profile. |
Compared with SMAJ9.0A and 1.5SMC9.0A, VTVS9V4ASMF-M3-18 offers optimized balance of compact SMF footprint, 9.4 V standoff for 12 V systems, and 14.9 V clamping - making it ideal for space-constrained automotive and industrial ports where both ESD and moderate surge protection are required without sacrificing manufacturability.
Availability
VTVS9V4ASMF-M3-18 is available at Aetrix Electronics and suitable for automotive infotainment, USB Type-C interface, industrial sensor interface, and POS terminal power input applications requiring stable component supply, halogen-free compliance, and AEC-Q101-qualified alternatives.
Supply support for VTVS9V4ASMF-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 VTVS eSMP® Series targets high-density, high-surge-protection applications with low-profile packages and AEC-Q101 qualification - engineered specifically for next-generation automotive electronics and ruggedized industrial interfaces.
FAQ
What is the maximum clamping voltage of VTVS9V4ASMF-M3-18 under a 10/1000 μs surge?
The VTVS9V4ASMF-M3-18 has a maximum reverse clamping voltage (VC) of 14.9 V at 25.48 A peak pulse current under the standardized 10/1000 μs waveform. This value is measured per Vishay Document 85891 and defines the upper voltage limit imposed on protected circuits during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is VTVS9V4ASMF-M3-18 RoHS-compliant and halogen-free?
Yes, VTVS9V4ASMF-M3-18 is RoHS-compliant and halogen-free per Vishay's material categorization standard (Document 99912). The SMF package uses halogen-free molding compound rated UL 94 V-0, and termination plating is lead (Pb)-free tin, meeting EU RoHS Directive 2011/65/EU and JEDEC JS709E requirements.
Does VTVS9V4ASMF-M3-18 meet AEC-Q101 qualification?
VTVS9V4ASMF-M3-18 is part of the AEC-Q101-qualified VTVS family; the "M3" suffix denotes tape-and-reel packaging, and qualification applies to the base VTVS9V4ASMF device. Full AEC-Q101 test reports are available from Vishay upon request and cover temperature cycling, HTRB, and ESD robustness per JESD22-A114.
What is the thermal resistance and maximum junction temperature for VTVS9V4ASMF-M3-18?
VTVS9V4ASMF-M3-18 has a thermal resistance RthJL of 20 K/W when mounted on an infinite heat sink, and its junction temperature range is –55 °C to +175 °C. These values are specified in Vishay Document 85891 and confirm suitability for under-hood automotive and high-ambient industrial environments without derating.
How does the capacitance of VTVS9V4ASMF-M3-18 affect high-speed data lines?
VTVS9V4ASMF-M3-18 exhibits 1130 pF typical capacitance at 0 V and 1 MHz, which is appropriate for USB 2.0 (480 Mbps), RS-485, and CAN FD interfaces where signal rise times exceed ~1 ns. It avoids excessive loading or jitter while maintaining effective transient coupling - validated in Vishay's Fig. 3 and Fig. 4 of Document 85891.
VTVS9V4ASMF-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):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 14.9V
- Current - Peak Pulse (10/1000µs):
- 25.48A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 1130pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS9V4ASMF-M3-18 FAQ
1.How can I place an order for VTVS9V4ASMF-M3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS9V4ASMF-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 VTVS9V4ASMF-M3-18 reliable?
The price and inventory of VTVS9V4ASMF-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 VTVS9V4ASMF-M3-18 is usually 5 days.
3.What payment methods are accepted for VTVS9V4ASMF-M3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS9V4ASMF-M3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS9V4ASMF-M3-18?
VTVS9V4ASMF-M3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS9V4ASMF-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 VTVS9V4ASMF-M3-18?
For technical support, including VTVS9V4ASMF-M3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS9V4ASMF-M3-18 requirements.
6.How does Aetrix verify that VTVS9V4ASMF-M3-18 is sourced from the original manufacturer or authorized distributors?
All VTVS9V4ASMF-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 VTVS9V4ASMF-M3-18 meets industry standards.
7.What is the process for return or replacement of VTVS9V4ASMF-M3-18?
All VTVS9V4ASMF-M3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS9V4ASMF-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 VTVS9V4ASMF-M3-18 part is unused and in its original packaging.
Return procedure for VTVS9V4ASMF-M3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS9V4ASMF-M3-18 Tags
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