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Vishay General Semiconductor - Diodes Division VTVS63ASMF-HM3-18
- Part No.:
- VTVS63ASMF-HM3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS63ASMF-HM3-18.pdf
- Description:
- TVS DIODE 63VWM 108VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,681
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Product details
Overview
VTVS63ASMF-HM3-18 from Vishay Semiconductors is a unidirectional 400 W TransZorb® transient voltage suppressor diode in SMF (DO-219AB) package, designed for robust ESD and surge protection in automotive and industrial power rails. It features a 63 V stand-off voltage (VRWM), 70.8–78.2 V reverse breakdown voltage (VBR) at 1 mA, ±5 % tolerance, 108 A peak pulse current (IPPM) under 10/1000 μs waveform, and clamps to ≤108 V at rated IPPM.
For engineers reviewing the VTVS63ASMF-HM3-18 datasheet, VTVS63ASMF-HM3-18 pinout, VTVS63ASMF-HM3-18 application, or VTVS63ASMF-HM3-18 equivalent, this device is selected for high-reliability DC bus protection where low clamping ratio, IEC 61000-4-2 ±30 kV ESD immunity, AEC-Q101 qualification, and halogen-free SOD-123W-compatible packaging are required.
Technical Context
This TVS diode operates as a unidirectional avalanche clamping device, activated when reverse voltage exceeds its specified VBR range (70.8–78.2 V). Its low thermal resistance (RthJL = 20 K/W) enables effective power dissipation during 400 W transient events with 10/1000 μs waveform profile.
The device delivers fast response time via "Low-Noise" technology and achieves ±30 kV contact/air discharge ESD protection per IEC 61000-4-2. Its 227 pF typical junction capacitance at 0 V supports moderate-speed signal line protection without excessive signal distortion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400 W (with 10/1000 μs waveform - sustains high-energy transients without failure) |
| Stand-off Voltage (VRWM) | 63 V (maximum continuous reverse operating voltage before significant leakage) |
| Breakdown Voltage (VBR) | 70.8–78.2 V at IT = 1 mA (avalanche onset range defining clamping threshold) |
| Clamping Voltage (VC) | ≤108 V at IPPM = 108 A (voltage seen by protected circuit during worst-case surge) |
| ESD Rating | ±30 kV contact & air discharge (IEC 61000-4-2 - exceeds automotive ESD immunity requirements) |
| Junction Temp. Range | −55 °C to +175 °C (supports under-hood and industrial ambient conditions) |
| Package | SMF (DO-219AB) - low-profile, SOD-123W-compatible, MSL Level 1, reflow/wave solderable |
Pinout & Package
SMF (DO-219AB) is a surface-mount, low-profile package with cathode marking indicated by a bar on the body. Dimensions: 3.9 mm × 1.9 mm × 1.08 mm (L × W × H). Compatible with SOD-123W footprint and standard PCB assembly processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to ground or lower-potential rail in unidirectional protection configuration |
| Cathode | Current exit terminal during reverse avalanche clamping | Connected to protected line (e.g., 63 V DC bus); polarity must be observed to ensure correct clamping direction |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Enables reliable suppression of ISO 7637-2 pulse 1/2a/5a surges on 63 V systems without degradation |
| ±5 % VBR tolerance (A-grade) | Ensures tight clamping window for predictable overvoltage protection across production lots |
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS power supplies |
| Halogen-free & RoHS-compliant | Meets automotive environmental compliance standards (e.g., ELV, JIG-STD-020) |
| Low-profile SMF package | Reduces board space vs. SMA/SMB while maintaining thermal performance and manufacturability |
Applications
| Automotive Power Rail Protection | Industrial DC Bus Clamping |
|---|---|
|
Use Scenario: Protecting 63 V battery-fed circuits (e.g., 48 V mild-hybrid ECUs) against load dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power rail and chassis ground to clamp surges within safe limits. Use Value: Limits peak voltage to ≤108 V during 108 A transients, preventing damage to downstream DC-DC converters and microcontrollers. |
Use Scenario: Safeguarding programmable logic controller (PLC) 60 V auxiliary power inputs from field-induced surges. IC Role / Device Role / Timing Role: Standoff-clamp protector on input stage, responding in <1 ns to divert energy before IC damage occurs. Use Value: Delivers ±30 kV ESD immunity and 400 W surge handling without derating at +125 °C ambient. |
| Telecom Remote Power Feeds | Renewable Energy Monitoring Systems |
|
Use Scenario: Protecting PoE++-derived 63 V remote power feeds in outdoor base station backhaul equipment. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DC input, coordinated with upstream fuses and secondary filtering. Use Value: Maintains 227 pF capacitance to avoid signal integrity issues on 100 Mbps data-over-power links. |
Use Scenario: Securing solar charge controller telemetry interfaces exposed to lightning-induced surges in off-grid installations. IC Role / Device Role / Timing Role: First-line transient suppressor on 63 V PV string monitoring lines connected to isolated ADC front-ends. Use Value: Operates reliably from −55 °C to +175 °C junction temperature, supporting wide ambient deployment ranges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64A-E3/57T | Higher VRWM (64 V), same 400 W rating, SMA package (larger footprint, higher RthJA) | Less suitable for space-constrained automotive modules; requires larger pad layout | Select when legacy SMA footprint compatibility is required and thermal margin allows higher RthJA |
| VTVS63GSMF-HM3-18 | ±2 % VBR tolerance (tighter than VTVS63ASMF-HM3-18's ±5 %), identical VRWM, package, and ratings | Better suited for precision clamping where tighter VBR distribution reduces design guardbanding | Choose when statistical clamping consistency is critical for high-volume automotive Tier 1 validation |
Compared with SMAJ64A-E3/57T and VTVS63GSMF-HM3-18, the VTVS63ASMF-HM3-18 offers optimal balance of cost, AEC-Q101 qualification, and SMF package size for mainstream 63 V rail protection - with ±5 % VBR sufficient for most industrial and automotive applications where tighter tolerance isn't mandated.
Availability
VTVS63ASMF-HM3-18 is available at Aetrix Electronics and suitable for automotive power management, industrial PLC inputs, and renewable energy monitoring systems requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant surge protection.
Supply support for VTVS63ASMF-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 VTVS63ASMF-HM3-18 - is engineered for high-energy transient suppression in harsh environments, targeting AEC-Q101-qualified automotive subsystems and mission-critical industrial power interfaces.
FAQ
What is the maximum clamping voltage of the VTVS63ASMF-HM3-18 at its rated peak pulse current?
The VTVS63ASMF-HM3-18 has a maximum reverse clamping voltage (VC) of 108 V when subjected to its rated 108 A peak pulse current (IPPM) under the 10/1000 μs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on the protected circuit during surge events. The VTVS63ASMF-HM3-18 maintains this clamping performance across its full operating temperature range.
Is the VTVS63ASMF-HM3-18 qualified for automotive applications?
Yes, the VTVS63ASMF-HM3-18 is AEC-Q101 qualified, confirming its reliability for automotive use cases including engine control units, body electronics, and ADAS power supplies. This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and ESD - all validated per the AEC-Q101 standard. The VTVS63ASMF-HM3-18 meets these requirements in its SMF (DO-219AB) package.
What does the "HM3" suffix indicate in VTVS63ASMF-HM3-18?
The "HM3" suffix in VTVS63ASMF-HM3-18 denotes halogen-free construction (H), RoHS-compliant and lead-free terminations (M), and 3,000 units per 7-inch reel packaging (3). This matches Vishay's standardized ordering code convention where "H" = halogen-free molding compound, "M" = lead (Pb)-free tin-plated terminations, and "3" = 3K/reel. The VTVS63ASMF-HM3-18 is fully compliant with JEDEC MSL Level 1 handling requirements.
How does the VTVS63ASMF-HM3-18 compare to the VTVS63GSMF-HM3-18 in terms of voltage tolerance?
The VTVS63ASMF-HM3-18 has a ±5 % tolerance on its reverse breakdown voltage (VBR), whereas the VTVS63GSMF-HM3-18 offers tighter ±2 % VBR tolerance. Both share identical VRWM (63 V), PPPM (400 W), package (SMF), and environmental qualifications. The VTVS63ASMF-HM3-18 is optimized for cost-sensitive applications where ±5 % VBR provides adequate design margin, while the G-grade variant suits precision clamping needs.
Can the VTVS63ASMF-HM3-18 be used in bidirectional protection configurations?
No, the VTVS63ASMF-HM3-18 is a unidirectional TVS diode and is not suitable for bidirectional protection. Its electrical characteristics - including polarity marking, avalanche behavior, and specified clamping only in reverse bias - are defined exclusively for unidirectional operation. For bidirectional surge suppression, a dedicated bidirectional TVS such as the VTVS63BSMF-HM3-18 (if available) or a back-to-back diode arrangement would be required instead of the VTVS63ASMF-HM3-18.
VTVS63ASMF-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):
- 63V
- Voltage - Breakdown (Min):
- 70.8V
- Voltage - Clamping (Max) @ Ipp:
- 108V
- Current - Peak Pulse (10/1000µs):
- 3.54A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 227pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS63ASMF-HM3-18 FAQ
1.How can I place an order for VTVS63ASMF-HM3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS63ASMF-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 VTVS63ASMF-HM3-18 reliable?
The price and inventory of VTVS63ASMF-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 VTVS63ASMF-HM3-18 is usually 5 days.
3.What payment methods are accepted for VTVS63ASMF-HM3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS63ASMF-HM3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS63ASMF-HM3-18?
VTVS63ASMF-HM3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS63ASMF-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 VTVS63ASMF-HM3-18?
For technical support, including VTVS63ASMF-HM3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS63ASMF-HM3-18 requirements.
6.How does Aetrix verify that VTVS63ASMF-HM3-18 is sourced from the original manufacturer or authorized distributors?
All VTVS63ASMF-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 VTVS63ASMF-HM3-18 meets industry standards.
7.What is the process for return or replacement of VTVS63ASMF-HM3-18?
All VTVS63ASMF-HM3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS63ASMF-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 VTVS63ASMF-HM3-18 part is unused and in its original packaging.
Return procedure for VTVS63ASMF-HM3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS63ASMF-HM3-18 Tags
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