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Vishay General Semiconductor - Diodes Division VTVS8V5ASMF-M3-18
- Part No.:
- VTVS8V5ASMF-M3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS8V5ASMF-M3-18.pdf
- Description:
- TVS DIODE 8.5VWM 13.5VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,418
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Product details
Overview
VTVS8V5ASMF-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 8.5 V maximum stand-off voltage (VRWM), 9.5–10.5 V reverse breakdown voltage (VBR) at 1 mA, 13.5 V clamping voltage (VC) at 28.24 A peak pulse current, and ±30 kV IEC 61000-4-2 ESD immunity - deployed in automotive infotainment power rails and USB interface protection.
For engineers reviewing the VTVS8V5ASMF-M3-18 datasheet, VTVS8V5ASMF-M3-18 pinout, VTVS8V5ASMF-M3-18 application, or VTVS8V5ASMF-M3-18 equivalent, key selection criteria include clamping performance under 10/1000 μs surge, low capacitance (1270 pF) for signal integrity preservation, unidirectional polarity for DC rail protection, and AEC-Q101 qualification readiness in automotive-grade variants.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its 9.5–10.5 V breakdown threshold. Its low thermal resistance (20 K/W to lead) enables rapid heat dissipation during 400 W 10/1000 μs transients, while the SMF package's 1.08 mm height supports space-constrained PCB layouts.
The device delivers 13.5 V clamping at 28.24 A peak pulse current and maintains only 0.1 μA leakage at 8.5 V VRWM. Its 1270 pF junction capacitance at 0 V bias is optimized for low-speed data/power line protection where signal distortion must be minimized without requiring ultra-low-capacitance design trade-offs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400 W (10/1000 μs waveform - sustains automotive load-dump and ISO 7637-2 transient suppression) |
| Stand-off Voltage (VRWM) | 8.5 V max - blocks normal operation voltage while remaining inactive until overvoltage occurs |
| Breakdown Voltage (VBR) | 9.5–10.5 V at IT = 1 mA - defines precise conduction onset for predictable clamping behavior |
| Clamping Voltage (VC) | 13.5 V at IPPM = 28.24 A - limits downstream IC voltage stress during surge events |
| Junction Capacitance | 1270 pF at VR = 0 V, f = 1 MHz - compatible with 12 V DC power rails and low-speed control signals |
| ESD Rating | ±30 kV contact & air discharge per IEC 61000-4-2 - meets stringent system-level ESD immunity requirements |
| Operating Temperature | −55 °C to +175 °C - supports under-hood and industrial ambient conditions without derating |
Pinout & Package
SMF (DO-219AB) low-profile surface-mount package: 3.9 mm × 1.9 mm × 1.08 mm body with cathode bar marking; compatible with SOD-123W footprint and reflow/wave soldering processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-side return path; completes clamping loop during transient |
| Cathode | Protected line input | Connected to protected node (e.g., 12 V supply rail); conducts avalanche current to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Handles high-energy transients like ISO 7637-2 Pulse 5a without degradation |
| ±5 % VBR tolerance | Ensures tight clamping threshold control across production lots for consistent protection margin |
| Low-profile SMF package | 1.08 mm height enables use in ultra-thin modules and dense automotive ECUs |
| IEC 61000-4-2 ±30 kV ESD | Eliminates need for secondary ESD components on board-level interfaces |
| Halogen-free & RoHS-compliant | Meets automotive OEM material compliance requirements (e.g., GMW3172, Ford WSS-M99P1111-A) |
Applications
| Automotive Infotainment Power Rail | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply inputs to head unit MCUs and display drivers against load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power input and local bulk capacitor. Use Value: Limits voltage to ≤13.5 V during 28.24 A transients, preventing latch-up or permanent damage to 16 V-rated regulators. |
Use Scenario: Safeguarding analog sensor outputs (e.g., 4–20 mA loops, thermocouple amplifiers) from field-induced surges. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across signal pair to shunt common-mode transients. Use Value: 1270 pF capacitance avoids bandwidth reduction in sub-1 MHz sensor signals while clamping to safe levels. |
| USB Type-C VBUS Line Protection | DC Motor Control Board Input Stage |
Use Scenario: Secondary overvoltage protection on VBUS after primary buck converter, guarding against adapter fault conditions. IC Role / Device Role / Timing Role: Standoff-rated TVS (8.5 V VRWM) placed upstream of USB PD controller input. Use Value: Blocks normal 5–20 V VBUS operation but clamps to 13.5 V during >10 V faults, preserving PD negotiation integrity. |
Use Scenario: Suppressing inductive kickback from brushed DC motor commutation on 24 V control boards. IC Role / Device Role / Timing Role: Unidirectional TVS mounted across H-bridge supply rail to absorb flyback energy. Use Value: 400 W rating handles repetitive 10/1000 μs spikes from PWM switching, extending MOSFET lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.5A | Higher clamping voltage (13.6 V vs. 13.5 V), same 400 W rating, SMA package (larger footprint) | Less suitable for space-constrained automotive modules due to 4.5 mm × 2.7 mm SMA size | Select VTVS8V5ASMF-M3-18 for designs requiring DO-219AB footprint compatibility and tighter height budget. |
| 1.5SMC8.2A | Lower VRWM (8.2 V), higher VC (13.9 V), 1500 W rating, larger SMC package | Better for high-energy surges but incompatible with compact layouts and may compromise margin on 8.5 V rails | Choose VTVS8V5ASMF-M3-18 when precise 8.5 V standoff and 1.08 mm profile are mandatory. |
Compared with SMAJ8.5A and 1.5SMC8.2A, VTVS8V5ASMF-M3-18 provides identical surge handling within a 35 % smaller PCB area and 50 % lower profile - critical for modern automotive electronics where volume and thermal stack-up are constrained.
Availability
VTVS8V5ASMF-M3-18 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial sensor nodes, USB-C power delivery subsystems, and DC motor control boards requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for VTVS8V5ASMF-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 series targets robust ESD and surge protection in harsh environments, with emphasis on AEC-Q101 qualification, low-profile packaging, and precise clamping for next-generation vehicle electronics and smart industrial systems.
FAQ
What is the maximum working voltage (VRWM) specification for VTVS8V5ASMF-M3-18?
The VTVS8V5ASMF-M3-18 has a maximum stand-off voltage (VRWM) of 8.5 V, meaning it remains non-conductive up to this DC or continuous reverse voltage level. This value ensures reliable blocking of nominal 8 V–8.5 V system rails while allowing fast transition into avalanche conduction during overvoltage events. The 8.5 V VRWM is confirmed in the Vishay Electrical Characteristics table for this exact part number.
Does VTVS8V5ASMF-M3-18 meet AEC-Q101 qualification requirements?
VTVS8V5ASMF-M3-18 is part of the AEC-Q101 qualified eSMP® Series, as explicitly stated in the Vishay datasheet under FEATURES. While the base part number does not include the "-H" suffix denoting certified qualification, the underlying VTVS8V5ASMF family is designed and tested to AEC-Q101 standards - enabling automotive use with appropriate qualification documentation from Vishay upon request.
What is the clamping voltage of VTVS8V5ASMF-M3-18 at its rated peak pulse current?
The VTVS8V5ASMF-M3-18 clamps to a maximum of 13.5 V at its rated peak pulse current of 28.24 A (10/1000 μs waveform). This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events - directly supporting design margin calculations for downstream 16 V-rated ICs.
How does the 1270 pF junction capacitance of VTVS8V5ASMF-M3-18 affect circuit performance?
The 1270 pF capacitance of VTVS8V5ASMF-M3-18, measured at 0 V bias and 1 MHz, introduces minimal loading on low-speed DC power rails and analog control lines. It avoids signal integrity issues in applications such as 12 V supply monitoring or 100 kHz PWM feedback paths, though it is not recommended for high-speed data lines (e.g., USB 2.0, HDMI) where sub-100 pF is typically required.
What package type and dimensions does VTVS8V5ASMF-M3-18 use?
VTVS8V5ASMF-M3-18 uses the SMF (DO-219AB) package: 3.9 mm length × 1.9 mm width × 1.08 mm height, with cathode bar marking. Its footprint matches SOD-123W and is compatible with standard reflow profiles (peak ≤260 °C). The package is halogen-free and RoHS-compliant, per Vishay's material categorization documentation.
VTVS8V5ASMF-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):
- 8.5V
- Voltage - Breakdown (Min):
- 9.5V
- Voltage - Clamping (Max) @ Ipp:
- 13.5V
- Current - Peak Pulse (10/1000µs):
- 28.24A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 1270pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS8V5ASMF-M3-18 FAQ
1.How can I place an order for VTVS8V5ASMF-M3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS8V5ASMF-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 VTVS8V5ASMF-M3-18 reliable?
The price and inventory of VTVS8V5ASMF-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 VTVS8V5ASMF-M3-18 is usually 5 days.
3.What payment methods are accepted for VTVS8V5ASMF-M3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS8V5ASMF-M3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS8V5ASMF-M3-18?
VTVS8V5ASMF-M3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS8V5ASMF-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 VTVS8V5ASMF-M3-18?
For technical support, including VTVS8V5ASMF-M3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS8V5ASMF-M3-18 requirements.
6.How does Aetrix verify that VTVS8V5ASMF-M3-18 is sourced from the original manufacturer or authorized distributors?
All VTVS8V5ASMF-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 VTVS8V5ASMF-M3-18 meets industry standards.
7.What is the process for return or replacement of VTVS8V5ASMF-M3-18?
All VTVS8V5ASMF-M3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS8V5ASMF-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 VTVS8V5ASMF-M3-18 part is unused and in its original packaging.
Return procedure for VTVS8V5ASMF-M3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS8V5ASMF-M3-18 Tags
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