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Vishay General Semiconductor - Diodes Division VTVS8V5ASMF-M3-08
- Part No.:
- VTVS8V5ASMF-M3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS8V5ASMF-M3-08.pdf
- Description:
- TVS DIODE 8.5VWM 13.5VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:39,420
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Product details
Overview
VTVS8V5ASMF-M3-08 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 DC lines such as USB, HDMI, and automotive sensor interfaces. It features 8.5 V maximum working 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.
For engineers reviewing the VTVS8V5ASMF-M3-08 datasheet, VTVS8V5ASMF-M3-08 pinout, VTVS8V5ASMF-M3-08 application, or VTVS8V5ASMF-M3-08 equivalent, this device serves as a compact, AEC-Q101-qualified TVS for high-reliability 5–12 V rail protection where low clamping voltage, fast response, and halogen-free packaging are required.
Technical Context
This unidirectional TVS operates by avalanche breakdown to clamp transients above its stand-off voltage, with a typical junction capacitance of 1270 pF at 0 V - optimized for signal integrity in medium-speed data lines. Its thermal resistance (RthJL) is 20 K/W when mounted on an infinite heat sink, enabling reliable power dissipation during repetitive 10/1000 μs surges up to 400 W.
The device complies with IEC 61000-4-2 (±30 kV contact/air discharge) and is qualified to AEC-Q101 for automotive use. Its SMF (DO-219AB) package supports wave and reflow soldering, with MSL level 1 moisture sensitivity and peak reflow temperature up to 260 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400 W (10/1000 μs waveform; defines maximum transient energy it can absorb without failure) |
| Stand-Off Voltage (VRWM) | 8.5 V (maximum continuous DC or RMS voltage the device blocks without conduction) |
| Breakdown Voltage (VBR) | 9.5–10.5 V at IT = 1 mA (avalanche onset range; determines turn-on threshold under transient stress) |
| Clamping Voltage (VC) | 13.5 V at IPPM = 28.24 A (voltage seen by protected circuit during worst-case surge; enables safe margin for 12 V systems) |
| Junction Capacitance (CD) | 1270 pF at VR = 0 V, f = 1 MHz (impacts signal integrity on high-speed lines; suitable for ≤100 Mbps interfaces) |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 (meets highest industrial and automotive ESD immunity requirements) |
| Operating Temperature | −55 °C to +175 °C (supports under-hood automotive and industrial environments without derating) |
Pinout & Package
SMF (DO-219AB) package: low-profile surface-mount outline measuring 3.9 mm × 1.9 mm × 1.08 mm, cathode marked by bar on top surface; compatible with SOD-123W footprint and reflow/wave soldering processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; completes clamping path during positive transients |
| Cathode | High-side input terminal | Connected to protected line (e.g., USB D+, CAN_H); conducts avalanche current to anode 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 in automotive and industrial applications |
| ±5 % VBR tolerance | Ensures consistent clamping behavior across production lots, critical for predictable system-level protection margins |
| "Low-Noise" fast response | Nanosecond-scale turn-on minimizes let-through voltage, protecting sensitive analog and digital ICs downstream |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, mechanical shock, and humidity testing per JESD22 standards |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global OEMs and industrial equipment manufacturers |
Applications
| Automotive Sensor Interface | USB 2.0 Data Line Protection |
|---|---|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) in engine control units exposed to load dump and ESD. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between signal line and chassis ground. Use Value: Clamps transients to ≤13.5 V while maintaining <0.1 μA leakage at 8.5 V, preserving sensor accuracy and MCU input thresholds. |
Use Scenario: Safeguarding USB 2.0 D+ and D− lines against ESD events during hot-plug and handling. IC Role / Device Role / Timing Role: Low-capacitance TVS connected inline with each data line to ground. Use Value: 1270 pF capacitance avoids signal distortion at 480 Mbps; ±30 kV ESD rating exceeds USB-IF compliance requirements. |
| Industrial RS-485 Transceiver Port | DC Power Rail Surge Suppression |
Use Scenario: Protecting half-duplex RS-485 transceivers (e.g., MAX13487) in factory automation networks subject to lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional protection implemented using two VTVS8V5ASMF-M3-08 devices (cathode-to-line, anode-to-ground). Use Value: 28.24 A peak pulse current rating handles IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges with minimal voltage overshoot. |
Use Scenario: Secondary-stage surge suppression on 12 V DC input rails feeding infotainment head units or ADAS modules. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after primary fuse and common-mode choke. Use Value: 8.5 V VRWM allows safe operation across full 12 V nominal range (9–16 V), while 13.5 V VC prevents downstream regulator overvoltage. |
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 | Same VRWM (8.5 V) and VC (13.5 V), but lower PPPM (400 W vs. SMAJ series' 400 W), identical DO-214AC (SMA) package - larger footprint than SMF | Less suitable for space-constrained PCBs; higher thermal resistance (RthJA ≈ 50 K/W vs. SMF's 20 K/W on heatsink) | Select when legacy SMA footprint compatibility is required and board area permits larger package. |
| TPSMD8.5A | Higher VRWM (9.0 V), same VC (13.5 V), 600 W PPPM, DO-214AB (SMC) package - 7.1 mm × 6.2 mm vs. SMF's 3.9 mm × 1.9 mm | Better surge handling margin but incompatible with dense layouts; not AEC-Q101 qualified | Choose for non-automotive industrial applications needing higher energy absorption and less stringent size constraints. |
Compared with SMAJ8.5A and TPSMD8.5A, VTVS8V5ASMF-M3-08 delivers identical clamping performance in a 55 % smaller footprint, AEC-Q101 qualification, and superior thermal performance on heatsinked leads - making it optimal for next-generation automotive and portable electronics where size, reliability, and thermal efficiency are prioritized.
Availability
VTVS8V5ASMF-M3-08 is available at Aetrix Electronics and suitable for automotive sensor interfaces, USB 2.0 data line protection, and industrial RS-485 port hardening requiring stable component supply and long-term lifecycle support.
Supply support for VTVS8V5ASMF-M3-08 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, optoelectronics, and passive components for automotive, industrial, and computing markets.
The VTVS eSMP® Series targets compact, high-power transient suppression in harsh environments - engineered for AEC-Q101 compliance, low-profile mounting, and robust ESD/surge resilience in modern electronic control units.
FAQ
What is the maximum clamping voltage of VTVS8V5ASMF-M3-08 under peak pulse conditions?
The VTVS8V5ASMF-M3-08 has a maximum reverse clamping voltage (VC) of 13.5 V when subjected to its rated peak pulse current of 28.24 A (10/1000 μs waveform). This value is measured per JEDEC standards and ensures protected circuits remain below critical overvoltage thresholds during surge events. The VTVS8V5ASMF-M3-08 maintains this clamping performance across its full operating temperature range of −55 °C to +175 °C.
Is VTVS8V5ASMF-M3-08 qualified for automotive applications?
Yes, VTVS8V5ASMF-M3-08 is AEC-Q101 qualified, having passed stress tests including temperature cycling, mechanical shock, and humidity resistance per JESD22 standards. Its 175 °C maximum junction temperature, halogen-free construction, and ±30 kV IEC 61000-4-2 ESD rating make it suitable for under-hood and cabin electronics. The VTVS8V5ASMF-M3-08 is commonly deployed in automotive sensor interfaces and infotainment power rails.
What package type does VTVS8V5ASMF-M3-08 use, and is it compatible with standard SMT processes?
VTVS8V5ASMF-M3-08 uses the SMF (DO-219AB) package - a low-profile surface-mount outline measuring 3.9 mm × 1.9 mm × 1.08 mm with cathode marking. It is fully compatible with standard reflow and wave soldering processes, rated for peak reflow temperatures up to 260 °C and classified as MSL level 1. The VTVS8V5ASMF-M3-08 footprint aligns with SOD-123W and supports automated placement with industry-standard vision systems.
How does the junction capacitance of VTVS8V5ASMF-M3-08 affect high-speed signal lines?
VTVS8V5ASMF-M3-08 exhibits a typical junction capacitance of 1270 pF at 0 V bias and 1 MHz, which is appropriate for signal lines operating up to 100 Mbps (e.g., USB 2.0, RS-485, LIN). While higher than some ultra-low-capacitance TVS devices, this value avoids excessive signal attenuation or rise-time degradation in medium-speed applications. The VTVS8V5ASMF-M3-08 balances clamping robustness and signal fidelity without requiring complex layout compensation.
What is the standoff voltage rating and leakage behavior of VTVS8V5ASMF-M3-08 at room temperature?
VTVS8V5ASMF-M3-08 has a maximum stand-off voltage (VRWM) of 8.5 V, meaning it remains non-conductive up to this DC or RMS voltage. At VRWM and 25 °C, its maximum reverse leakage current (IR) is 0.1 μA - sufficiently low to avoid loading sensitive analog sensors or battery-powered circuits. This tight leakage spec is maintained across the full −55 °C to +175 °C operating range, ensuring stable performance in VTVS8V5ASMF-M3-08 deployments.
VTVS8V5ASMF-M3-08 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):
- 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-M3-08 FAQ
1.How can I place an order for VTVS8V5ASMF-M3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS8V5ASMF-M3-08 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 VTVS8V5ASMF-M3-08 reliable?
The price and inventory of VTVS8V5ASMF-M3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VTVS8V5ASMF-M3-08 is usually 5 days.
3.What payment methods are accepted for VTVS8V5ASMF-M3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS8V5ASMF-M3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS8V5ASMF-M3-08?
VTVS8V5ASMF-M3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS8V5ASMF-M3-08 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 VTVS8V5ASMF-M3-08?
For technical support, including VTVS8V5ASMF-M3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS8V5ASMF-M3-08 requirements.
6.How does Aetrix verify that VTVS8V5ASMF-M3-08 is sourced from the original manufacturer or authorized distributors?
All VTVS8V5ASMF-M3-08 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 VTVS8V5ASMF-M3-08 meets industry standards.
7.What is the process for return or replacement of VTVS8V5ASMF-M3-08?
All VTVS8V5ASMF-M3-08 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS8V5ASMF-M3-08, 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 VTVS8V5ASMF-M3-08 part is unused and in its original packaging.
Return procedure for VTVS8V5ASMF-M3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS8V5ASMF-M3-08 Tags
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